JP3899019B2

JP3899019B2 - Foreign matter processing apparatus and foreign matter processing method

Info

Publication number: JP3899019B2
Application number: JP2002372569A
Authority: JP
Inventors: 寛二今井
Original assignee: Sumiju Environmental Engineering Co Ltd
Current assignee: Sumiju Environmental Engineering Co Ltd
Priority date: 2002-12-24
Filing date: 2002-12-24
Publication date: 2007-03-28
Anticipated expiration: 2022-12-24
Also published as: JP2004204479A

Description

【０００１】
【発明の属する技術分野】
本発明は、被処理水中の夾雑物を破砕や掻き上げ等により処理するための夾雑物処理装置および夾雑物処理方法に関する。
【０００２】
【従来の技術】
従来より、自然現象に起因する排水である雨水と、生活または事業に起因する排水である汚水と、が合流された被処理水が流れこむ合流式の下水道設備にあっては、下水道管渠を流下してきた被処理水を外部に移送するポンプ場を備えている。このようなポンプ場では、被処理水中の夾雑物によってポンプ等につまり等の不具合が生じないように夾雑物の破砕や除去を行う夾雑物処理装置が設けられている。
【０００３】
このような夾雑物処理装置としては、被処理水中の夾雑物を破砕する破砕機と、破砕された夾雑物を捕集し水面上に掻き上げて被処理水から除去する除塵機と、がポンプの前段の水路に、この順で直列に設けられたものが知られている（例えば、特許文献１参照）。
【０００４】
【特許文献１】
特開平９−１９５３７１号公報
【０００５】
【発明が解決しようとする課題】
しかしながら、上述のような夾雑物処理装置を用いた場合次のような不具合が生ずることがあった。
【０００６】
すなわち、晴天時には被処理水はほとんど汚水のみとなり、このような汚水中の屎尿や厨芥等の夾雑物が除塵機によって水面上に掻き上げられるので、悪臭や虫の発生等の起因となる場合があった。一方、雨天時は、汚水に比べて大量の雨水が被処理水に含まれ、この雨水には屎尿や厨芥等に比べて大きな夾雑物が多く含まれることから、当該大きな夾雑物によって破砕機のつまりや破損等を生じることがあった。
【０００７】
本発明は、上記課題に鑑みてなされたものであり、合流式下水道の被処理水を好適に処理可能な夾雑物処理装置及び夾雑物処理方法を提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明に係る夾雑物処理装置は、水路を流れる被処理水中の夾雑物を処理する夾雑物処理装置において、被処理水中の夾雑物を破砕する破砕手段と、破砕手段を上下に昇降させる昇降手段と、水路に設置され被処理水中の夾雑物を捕集し水面上に掻き上げ可能な除塵機と、被処理水の水量を取得する水量取得手段と、取得された被処理水の水量に関する情報に基づいて被処理水の水量が所定の基準値よりも高いか低いかを判断し、被処理水の水量が所定の基準値よりも低い場合に除塵機による夾雑物の掻き上げを停止させると共に破砕手段が被処理水に浸漬するように昇降手段を制御し、被処理水の水量が所定の基準値よりも高い場合に除塵機による夾雑物の掻き上げを行わせると共に破砕手段が被処理水の水面より上方に位置するように昇降手段を制御する制御手段と、を備えることを特徴とする。
【０００９】
また、本発明に係る夾雑物処理方法は、水路を流れる被処理水中の夾雑物を破砕する破砕手段と、破砕手段を上下に昇降させる昇降手段と、水路に設置され被処理水中の夾雑物を捕集して水面上に掻き上げ可能な除塵機と、を備える夾雑物処理装置を用いて水路を流れる被処理水中の夾雑物を処理する夾雑物処理方法において、被処理水の水量を取得する水量取得工程と、取得された被処理水の水量に関する情報に基づいて被処理水の水量が所定の基準値よりも高いか低いかを判断し、被処理水の水量が所定の基準値よりも低い場合に除塵機による夾雑物の掻き上げを停止すると共に昇降手段により破砕手段を被処理水に浸漬させ、被処理水の水量が所定の基準値よりも高い場合に除塵機による夾雑物の掻き上げを行うと共に昇降手段により破砕手段を被処理水の水面より上方に引き上げる制御工程と、を含むことを特徴とする。
【００１０】
本発明の夾雑物処理装置及び夾雑物処理方法によれば、被処理水の水量に関する情報を取得して水量が所定の基準値より高いか低いかを判断することにより、晴天時等で被処理水の水量が少なく雨水の量が少なくて被処理水のほとんどが汚水である場合と、雨天時で被処理水の水量が多く汚水に比して大量の雨水が被処理水中に含まれる場合とが好適に判断される。そして、被処理水のほとんどが汚水である場合には、被処理水中に浸漬される破砕手段によって被処理水中の屎尿や残飯等の夾雑物が破砕されて夾雑物の処理が好適に行われる一方、除塵機による夾雑物の掻き上げがなされないので夾雑物が水面上に露出されず、屎尿や残飯等の夾雑物からの臭気の発生や虫等の発生が抑制される。これに対して、汚水に比して大量の雨水が被処理水中に含まれる場合には、破砕手段が水面上に移動され、雨水によってもたらされ、屎尿や残飯に比して大きな夾雑物が破砕手段に巻き込まれなくされ、さらに、除塵機によって被処理水中の大きな夾雑物が好適に掻き上げられて被処理水中の夾雑物の処理が好適になされる。
【００１１】
ここで、除塵機は水路で破砕手段よりも下流側に設置されると共に、破砕手段により破砕された夾雑物を通過可能とされていることが好ましい。
【００１２】
これによれば、除塵機における夾雑物の掻き上げがなされない場合に、夾雑物は破砕手段により破砕されて除塵機に到達すると共に、この破砕された夾雑物が除塵機を通過可能であるので、夾雑物が、掻き上げのなされない除塵機に捕集されて蓄積することが防止される。
【００１３】
また、除塵機及び破砕手段よりも下流側には、除塵機又は破砕手段によって処理がなされた被処理水を汚水処理場へ移送する汚水ポンプと、除塵機又は破砕手段によって処理がなされた被処理水を海又は河川に移送する雨水ポンプと、が設けられ、制御手段は、被処理水の水量が所定の基準値よりも低いと判断された場合に汚水ポンプを稼働させる一方、被処理水の水量が所定の基準値よりも高いと判断された場合に雨水ポンプを稼働させることが好ましい。
【００１４】
これによれば、晴天時等で被処理水のほとんどが汚水である場合に、破砕手段によって夾雑物が処理された被処理水が好適に汚水処理場に移送されて処理される一方、雨天時で汚水に比して大量の雨水が被処理水中に含まれる場合に、除塵機によって夾雑物が処理された被処理水が河川等に移送されて放流される。このため、汚水がほとんどである被処理水と雨水を大量に含んだ被処理水とを各々適切に処理することが可能とされる。
【００１５】
ここで、水量に関する情報は、水路の水位であることが好ましい。これによって、夾雑物の多い被処理水の水量を好適に取得することができる。
【００１６】
また、破砕手段が被処理水に浸漬された状態での破砕手段の上端の高さは、所定の基準値となる水量が流入した場合の前記水路における水面位置とほぼ同等とされることが好ましい。
【００１７】
これによれば、被処理水の流量が増えて水位が破砕手段の上端に達して破砕手段の処理能力の限界に達するタイミングで、被処理水の水量が基準値に達し破砕手段が上昇されるので、破砕手段を効率よく活用できる。
【００１８】
また、制御手段は、被処理水の水量が所定の基準値よりも高いと判断された場合に破砕手段を停止させることが好ましい。
【００１９】
これによれば、被処理水の水量が所定の基準値よりも高くなって破砕手段が水面上に位置する場合に破砕手段が停止され、動力が不要とされるので、ランニングコストを削減できる。
【００２０】
また、破砕手段と共に水路を横断するように水路に設置され被処理水中の夾雑物を捕集する捕集手段と、捕集手段に捕集された夾雑物を破砕手段に移送する移送手段と、を備え、昇降手段は破砕手段の昇降運動に合わせて捕集手段及び移送手段を上下に昇降運動させることが好ましい。
【００２１】
これによれば、破砕手段によって被処理水の処理が行われる際に、破砕手段に比して通過抵抗の少ない捕集手段と移送手段とによって被処理水の夾雑物の破砕処理がより好適に行える。また、除塵機によって被処理水の処理が行われる際には、捕集手段、移送手段、破砕手段が各々水面上に上昇されるので、比較的大きな夾雑物がこれら捕集手段、移送手段、破砕手段をつまらせたりすることがない。
【００２２】
また、晴天時であって、ほとんど汚水のみが被処理水として流入する場合においても、時間帯や季節等によってその汚水の量が変化し被処理水の量が変動することがある。そこで、水路が並列する複数の小水路に分割され、除塵機、破砕手段及び昇降手段がこの小水路毎に設けられると共に、小水路には破砕手段よりも上流側に被処理水の各々の水路への流入・遮断を制御可能なゲートが各々設けられることが好ましい。
【００２３】
これによれば、晴天時において、汚水を主成分とする被処理水の水量が変化する場合でも、各々のゲートを制御して被処理水を流入させる水路の数を変更することにより、被処理水中の夾雑物を各々破砕手段によって効率的に処理できる。
【００２４】
【発明の実施の形態】
以下、図１及び図２を参照しながら、本発明に係る夾雑物処理装置の好適な実施形態について詳細に説明する。なお、図面の説明において、同一または相当要素には同一の符号を付し、重複する説明は省略する。図１は本実施形態に係る夾雑物処理装置１０の上面図、図２は図１のＩＩ−ＩＩ矢視図、図３は図１のＩＩＩ−ＩＩＩ矢視図である。
【００２５】
本実施形態に係る夾雑物処理装置１０は、図１及び図２に示すように、下水道管渠１内を流下してきた被処理水を下水処理場や河川等に移送するポンプ場５に設置されている。下水道管渠１は、自然現象に起因する排水である雨水と、生活または事業に起因する排水である汚水と、が合流された被処理水が流れこむ合流式のものであり、ポンプ場５は下水道管渠１の下流端に設けられている。
【００２６】
ポンプ場５は、下水道管渠１からの被処理水が流れる水路であってそこで被処理水中の夾雑物の処理がなされる水路部（水路）１１と、その深さが水路部１１よりも深くされ夾雑物が処理された後の被処理水が貯留される槽部１２と、を有している。
【００２７】
ポンプ場５内の水路部１１及び槽部１２は、被処理水が流入する方向と平行でかつ鉛直な第一区画壁２０によって、図１の上下方向に２つに区画されている。
【００２８】
水路部１１の内、第一区画壁２０によって区画された２つの部分は、さらに、第一区画壁２０と平行な第二区画壁２１、２２によって、各々さらに図１の上下方向に２つの小水路に区画されている。ここでは、第二区画壁２２とポンプ場５の壁とに挟まれる部分を第一水路（小水路）１５、第二区画壁２２と第一区画壁２０とに挟まれる部分を第二水路（小水路）１６、第一区画壁２０と第二区画壁２１とに挟まれる部分を第三水路（小水路）１７、第二区画壁２１とポンプ場５の壁とに挟まれる部分を第四水路（小水路）１８とする。また、槽部１２で第一水路１５及び第二水路１６からの被処理水が流入する部分を第一槽部１３、槽部１２で第三水路１７及び第四水路１８からの被処理水が流入する部分を第二槽部１４とする。
【００２９】
第一水路１５、第二水路１６、第三水路１７、第四水路１８には、各々上流側から順に、モータ３５ａによって開閉動作がなされ下水道管渠１から各々の小水路１５〜１８内への被処理水の流入・遮断を制御する流入ゲート３５と、流入された被処理水中の夾雑物を破砕可能な破砕ユニット４５と、被処理水中の夾雑物を捕集し水面上に掻き上げて除去する除塵機６５と、が各々設けられている。
【００３０】
また、図１〜図３に示すように、第一水路１５、第二水路１６、第三水路１７、第四水路１８で破砕ユニット４５が設置される部分には、両側に一対の補助壁４６，４７が設けられており、この部分の小水路１５〜１８の幅は、除塵機６５が設けられた部分の水路の幅に比べて狭くされている。なお、図２及び図３に示すように、補助壁４６，４７の高さは、第一区画壁２０、第二区画壁２１，２２に比して低くされている。
【００３１】
破砕ユニット４５は、円筒スクリーン（捕集手段）４５ａ及び破砕機４５ｄを各々備え、この円筒スクリーン４５ａと破砕機４５ｄとは、補助壁４６、４７によって横幅が狭くされた小水路１５〜１８を各々横断するように並設されている。
【００３２】
円筒スクリーン４５ａは、円環状板材が上下方向に所定距離離間して複数積層された縦型円筒形状を有し、各々の小水路１５〜１８を流れる被処理水中の夾雑物（し渣）をその円環状板材に捕集する。そして、この円筒スクリーン４５ａは夾雑物が捕集された被処理水を板の間の隙間から下流側に通過させる。
【００３３】
また円筒スクリーン４５ａは、各々の円筒スクリーン４５ａが捕集した夾雑物を破砕機４５ｄ側に移送する移送手段としてのスクレーパ４５ｂを各々有している。このスクレーパ４５ｂは、棒体が円環状板材間に対応して上下に複数積層され、円筒スクリーン４５ａの円環状板材の中心軸線よりも小水路１５〜１８の上流側に偏心された鉛直軸回りを、各々の円筒スクリーン４５ａ毎に設けられたモータ４５ｃによって回転されるものであり、円筒スクリーン４５ａの上流方向側で円筒スクリーン４５ａの円環状板材間から上流方向側に突出され、この円環状板材間に捕集された夾雑物を回転によりかき取って並設された破砕機４５ｄに向かって移送する。
【００３４】
破砕機４５ｄは、各々の破砕機４５ｄに対して設置されたモータ４５ｅによって回転される一対の回転破砕刃（破砕手段）４５ｆ、４５ｆを有し、被処理水が通過する際に被処理水中の夾雑物を破砕する。
【００３５】
また、破砕ユニット４５は、昇降装置（昇降手段）５５によって、各々独立に上下に昇降可能とされている。この昇降装置５５は、図２及び図３に示すように、各破砕ユニット４５を個別につり上げるためのワイヤー５５ｂと、ワイヤー５５ｂを各々巻き上げるためのモータ５５ａと、各々のモータ５５ａが設置され水路部１１上で幅方向に延在して固定側に架設される枠体５５ｃと、を備えている。そして、この昇降装置５５は、各々の破砕ユニット４５を、図２に示すように水路の底面に載置された状態から、図２に仮想線で示すように水路の底面から所定距離離間された状態までつり上げ可能となっている。
【００３６】
ここで、破砕機４５ｄ及び円筒スクリーン４５ａは、つり上げられた状態で、その下端の高さが第一区画壁２０、第二区画壁２１、２２の上端よりも上に位置するようにされ、各々の水路に導入される被処理水の水面より上方にまで引き上げ可能とされている。
【００３７】
また、破砕機４５ｄが各々の水路の底面に載置された状態で、破砕機４５ｄの回転破砕刃４５ｆの上端の高さは、後述する所定の基準水位９ｂとほぼ同様されている。
【００３８】
除塵機６５は、図１及び図２に示すように、上下方向に長尺な板を所定間隔水平方向に複数配設した縦スクリーン６５ａを各々備えている。この縦スクリーン６５ａは、各々の小水路１５〜１８を横断し、かつ、図２に示すように、その上部が下流側（図示右側）にやや傾くように各々の小水路１５〜１８に対して設置されている。
【００３９】
そして、この縦スクリーン６５ａは、上流側から流入する被処理水中の所定以上の大きさの夾雑物（し渣）を板の間で捕集する一方、夾雑物が捕集された被処理水を板の間の隙間から下流側に通過させる。ここで、縦スクリーン６５ａの目開きは、破砕機４５ｄで破砕された夾雑物を通過可能な大きさとすることが好ましい。具体的には、例えば、破砕機４５ｄの破断寸法を３ｃｍ角とした場合、縦スクリーン６５ａの目開きを５ｃｍとすればよい。
【００４０】
また、除塵機６５は、図２に示すように、縦スクリーン６５ａの上流側で縦スクリーン６５ａに沿う周回軌道回りを周回する主務チェーン６５ｂと、この主務チェーン６５ｂを周回運動させるモータ６５ｄと、主務チェーン６５ｂに複数取り付けられ主務チェーン６５ｂの周回運動に伴って縦スクリーン６５ａに捕集された夾雑物を縦スクリーン６５ａにそって上方に掻き上げるレーキ６５ｃと、縦スクリーン６５ａの上端まで掻き上げられた夾雑物をレーキ６５ｃから下方へ払い落とすワイパ６５ｅと、を各々有している。なお、図１においては、除塵機６５の内、縦スクリーン６５ａとモータ６５ｄを除いて図示を省略している。
【００４１】
そして、各々の除塵機６５によって掻き上げられ払い落とされた夾雑物は、図２及び図１に示すように、ポンプ場５の上部に設けられて小水路１５〜１８に亘って幅方向に延在するベルトコンベア６７に捕集され、図１に示すように、さらにベルトコンベア６８を介してホッパ６９に貯留される構成とされている。
【００４２】
また、図１に示すように、水路部１１で流入ゲート３５よりも上流側には、水路部１１の被処理水の水位を取得する水位センサ（水量取得手段）７１が設けられている。
【００４３】
また、第一槽部１３には、第一槽部１３内の被処理水を下水処理場へ移送する汚水ポンプ８２が複数設けられ、第二槽部１４には、第二槽部１４内の被処理水を河川等に移送する雨水ポンプ８１が複数設けられている。ここで、雨水ポンプ８１の能力は汚水ポンプ８２の能力よりも高くされている。
【００４４】
さらに、第一区画壁２０で、第一槽部１３と第二槽部１４とを区画する部分には、第一槽部１３と第二槽部１４とを連通可能であってモータ１９ａによって開閉が制御される連絡ゲート１９が設けられている。
【００４５】
そして、本実施形態の夾雑物処理装置１０においては、水位センサ７１に接続されて水路１５〜１８における被処理水の水位が取得可能とされ、取得された水位に応じて、各昇降装置５５の駆動モータ５５ａ、各除塵機６５の駆動モータ６５ｄ等の駆動を制御する制御装置９８を備えている。
【００４６】
具体的には、制御装置９８は、取得された水位と、図２及び図３に示す、最低水位９ｃ、基準水位９ｂ、最高水位９ａとを比較して制御を行う。
【００４７】
ここで、最低水位９ｃは、破砕ユニット４５での破砕に最低限必要な水量に対応する水位であり、ここでは、破砕ユニット４５が下降されている状態での破砕機４５ｄの回転破砕刃４５ｆの下端近傍の水位である。また、基準水位９ｂは、晴天時等で被処理水がほとんど汚水のみである場合の水量と、雨天時等で雨水が被処理水に大量に含まれる場合の水量との間の境界となる水量（所定の基準値）が、全ての小水路１５〜１８に導入された場合の水路の水位である。また、最高水位９ａは、この夾雑物処理装置１０での最大処理水量に対応する水位であり、補助壁４６の上端よりも高い第一区画壁２０の上端近傍とされる。
【００４８】
さらに、制御装置９８は、小水路１５〜１８の各流入ゲート３５の駆動モータ３５ａ、各破砕ユニット４５の駆動モータ４５ｃ，４５ｅ、各汚水ポンプ８２、各雨水ポンプ８１、連絡ゲート１９の駆動モータ１９ａ、及び、ベルトコンベア６７，６８の駆動モータと接続されており、これらの駆動も制御可能となっている。
【００４９】
次に、このような、制御装置９８，流入ゲート３５、昇降装置５５、破砕ユニット４５、除塵機６５、雨水ポンプ８１、汚水ポンプ８２等を有する夾雑物処理装置１０における制御装置９８の作用について図４及び図５のフローチャートを参照して説明する。
【００５０】
予め、小水路１５〜１８の各流入ゲート３５は各々閉鎖され、各破砕ユニット４５は下降され、各破砕ユニット４５、各除塵機６５、汚水ポンプ８２、雨水ポンプ８１及びベルトコンベア６７は各々停止された停止状態から説明を始める。
【００５１】
まず、ステップＳ１０１において、被処理水の水位を取得しこれに基づいて判定を行う。そして、水位が最低水位９ｃよりも低い場合には、被処理水の量が少なく処理の必要がないとして停止状態を維持し、再びステップ１０１で水位に基づく判定を行う。
【００５２】
一方、水位が所定の最低水位９ｃ以上である場合には、処理の必要がありこの被処理水は汚水がほとんどであるとし、この被処理水の処理をすべくステップＳ１０３へ進む。ステップＳ１０３においては、モータ３５ａを駆動して第一水路１５の流入ゲート３５を開放し、被処理水を第一水路１５に流入させると共に、第一水路１５のモータ４５ｃ及びモータ４５ｅを駆動して第一水路１５の破砕ユニット４５を駆動し、第一水路１５に流入した被処理水中の夾雑物を破砕させ、さらに、汚水ポンプ８２を各々駆動し、破砕ユニット４５及び除塵機６５を通過して第一槽部１３に貯留される被処理水を下水処理場に移送する。このような処理がなされている場合に、除塵機６５は稼働されないので、被処理水中の夾雑物が水面上に掻き上げられることはない。また、除塵機６５の縦スクリーン６５ａの目幅は破砕機４５ｄによって破砕された夾雑物が通過可能となっているので、破砕された夾雑物を含む被処理水は、除塵機６５によって流れが滞ることなく第一槽部１３に流入される。
【００５３】
このようにして、被処理水の処理が行われると、ステップＳ１０５において、再び被処理水の水位に基づく判断が行われる。ここで、水位が最低水位９ｃよりも低くなれば、被処理水の処理は終了したとして、ステップＳ１０７において、第一水路１５の流入ゲート３５を閉鎖し、第一水路１５の破砕ユニット４５を停止し、汚水ポンプ８２を停止してステップＳ１０１に戻る。
【００５４】
一方、水位が最低水位９ｃ以上であり、かつ、基準水位９ｂより低ければ、このままの状態で被処理水が汚水であるとしてこの処理を続け、再びステップＳ１０５において水位に基づく判断を行う。
【００５５】
また、水位が基準水位９ｂ以上となる場合には、処理量を増やすべくステップＳ１０９に進む。ステップＳ１０９においては、第二水路１６の流入ゲート３５を開放し、第二水路１６の破砕ユニット４５を駆動する。これによって、被処理水は、第一水路１５と第二水路１６とに流入して各々の破砕ユニット４５によりその中の夾雑物が破砕され、第一槽部１３から排出されることとなる。
【００５６】
このようにして、被処理水の処理が行われると、ステップＳ１１１において、再び水位に基づく判断が行われる。ここで、水位が最低水位９ｃよりも低くなれば、被処理水の処理容量を少なくすべく、ステップＳ１１３において、第二水路１６の流入ゲート３５を閉鎖し、第二水路１６の破砕ユニット４５を停止してステップＳ１０５に戻る。これによって、第一水路１５のみによって被処理水の処理が好適に行われる。
【００５７】
一方、水位が最低水位９ｃ以上であり、かつ、基準水位９ｂ未満であれば、このままの状態で処理を続け、再びステップＳ１１１において水位に基づく判断を行う。
【００５８】
一方、水位が所定の基準水位９ｂ以上となった場合には、処理容量を増やすべくステップＳ１１５に進む。ステップＳ１１５においては、第三水路１７の流入ゲート３５を開放し、第三水路１７の破砕ユニット４５を駆動すると共に、モータ１９ａを駆動して連絡ゲート１９を開放する。これによって、被処理水は、第一水路１５及び第二水路１６に加えて第三水路１７によっても夾雑物の破砕がなされ、第二水路１６を介して第二槽部１４に流入した処理済みの被処理水は連絡ゲート１９を介して第一槽部１３に流入し汚水ポンプ８２を介して汚水処理場に移送されることとなる。
【００５９】
このようにして、被処理水の処理が行われると、ステップＳ１１７において、水位に基づく判断が行われる。ここで、水位が最低水位９ｃよりも低くなれば、被処理水の処理容量を少なくすべく、ステップＳ１１９において、第三水路１７の流入ゲート３５を閉鎖し、第三水路１７の破砕ユニット４５を停止すると共に連絡ゲート１９を閉鎖してステップＳ１１１に戻る。これによって、第一水路１５及び第二水路１６のみによって被処理水の処理が行われる。
【００６０】
一方、水位が最低水位９ｃ以上であり、かつ、基準水位９ｂ未満であれば、このままの状態で処理を続け、再びステップＳ１１７において水位に基づく判断を行う。
【００６１】
また、水位が基準水位９ｂ以上となった場合には、処理容量をさらに増やすべくステップＳ１２０に進む。ステップＳ１２０においては、第四水路１８の流入ゲート３５を開放し、第四水路１８の破砕ユニット４５を駆動する。これによって、被処理水は、第一水路１５、第二水路１６、第三水路１７に加えて第四水路１８によっても夾雑物の破砕がなされることとなる。
【００６２】
このようにして、被処理水の処理が行われると、ステップＳ１２１において、水位に基づく判断が行われる。ここで、水位が最低水位９ｃよりも低くなれば、被処理水の処理容量を少なくすべく、ステップＳ１２３において、第四水路１８の流入ゲート３５を閉鎖し、第四水路１８の破砕ユニット４５を停止してステップＳ１１７に戻る。これによって、第一水路１５、第二水路１６及び第三水路１７のみによって被処理水の処理が行われる。
【００６３】
また、水位が最低水位９ｃ以上であり、かつ、基準水位９ｂ未満であれば、このままの状態で処理を続け、再びステップＳ１２１において水位に基づく判断を行う。
【００６４】
また、４つの小水路１５〜１８を用いて夾雑物の破砕処理を行っても、水位が基準水位９ｂ以上となった場合には、被処理水は雨水を主とするものとなると共に破砕ユニット４５による処理能力の限界に達したとして、除塵機６５による夾雑物の処理に切り替えるべくステップＳ１２５に進む。
【００６５】
ステップＳ１２５においては、全ての破砕ユニット４５を停止し、全ての昇降装置５５を駆動して全ての破砕ユニット４５を上昇させ、すべての除塵機６５を稼働し、汚水ポンプ８２を停止し、雨水ポンプ８１を駆動し、コンベア６７，６８を駆動する。
【００６６】
これによって、被処理水は破砕ユニット４５によって流れが邪魔されることなく各々の小水路１５〜１８を通過でき、さらに、被処理水中の夾雑物は除塵機６５によって捕集され掻き上げられてベルトコンベア６７、６８を介してホッパ６９に集められ、被処理水の夾雑物が除去されて処理される。そして、夾雑物が除去された被処理水は雨水ポンプ８１を介して河川等に放流される。
【００６７】
このようにして、被処理水の処理が行われると、ステップＳ１２７において、水位に基づく判断が行われる。ここで、水位が基準水位９ｂよりも低くなれば、破砕ユニット４５による処理に切り替えるべく、ステップＳ１２９において、全ての昇降装置５５を駆動して全ての破砕ユニット４５を下降させ、全ての破砕ユニット４５を稼働し、すべての除塵機６５を停止し、汚水ポンプ８２を可動し、雨水ポンプ８１を停止し、コンベア６７，６８を停止した後ステップＳ１２１に戻る。これによって、第一水路１５〜第四水路１８において破砕ユニット４５によって被処理水の処理が行われ、処理後の汚水は汚水ポンプ８２によって汚水処理増に移送される。
【００６８】
また、水位が基準水位９ｂ以上であり、かつ、最高水位９ａ未満であれば、被処理水は雨水であるとしてこのままの状態で除塵機６５による処理を続け、再びステップＳ１２７において水位に基づく判断を行う。
【００６９】
一方、除塵機６５を用いて夾雑物の処理を行っても、水位が最高水位９ａ以上となった場合には、ステップ１３１において、警告を表示し、制御を停止する。
【００７０】
このような、夾雑物処理装置においては、小水路１５〜１８の水位が取得されると共に、この水位と、適切に定められた基準水位９ｂとを比較することにより、晴天時等で雨水の量が少なくて被処理水の流量が少なくて水位が低く被処理水のほとんどが汚水である場合と、雨天時で雨水が大量に合流し被処理水の流量が多くて水位が高い場合とが好適に判断される。そして、水路内の水位が基準水位よりも低い場合に除塵機６５による夾雑物の掻き上げが停止されると共に昇降装置５５により破砕機４５ｄが被処理水に浸漬される。このため、水路内の水位が低く被処理水のほとんどが汚水である場合に、被処理水中に浸漬される破砕機４５ｄによって被処理水中の屎尿や残飯等の夾雑物が破砕されて夾雑物の処理が好適に行われる一方、除塵機６５による夾雑物の掻き上げがなされないので夾雑物が水面上に露出されず、屎尿や残飯等の夾雑物からの臭気の発生や虫等の発生が抑制され、公衆衛生上好ましい。
【００７１】
これに対して、小水路１５〜１８内の水位が基準水位よりも高いと判断された場合に、除塵機６５による夾雑物の掻き上げがなされると共に昇降装置５５により破砕ユニット４５が被処理水の水面より上方に引き上げられる。このため、水路内の水位が高く汚水に比して大量の雨水が被処理水中に含まれる場合に、被処理水中の、特に雨水によってもたらされ屎尿や残飯に比して大きい夾雑物が破砕機４５ｄに巻き込まれなくなり、破砕機４５ｄのつまりや破損が防止されている。また、除塵機６５によって被処理水中の大きな夾雑物が好適に掻き上げられて被処理水中の夾雑物の処理が好適になされる。
【００７２】
また、除塵機６５は小水路１５〜１８で破砕機４５ｄよりも下流側に設置されると共にこの除塵機６５の縦スクリーン６５ａの目開きは破砕機４５ｄにより破砕された夾雑物が通過可能に設定されている。このため、除塵機６５における夾雑物の掻き上げがなされない場合に、破砕機４５ｄにより夾雑物が破砕されて除塵機６５に到達すると共に、この破砕された夾雑物が除塵機６５を通過可能であるので、夾雑物が、掻き上げのなされない除塵機６５の縦スクリーン６５ａに捕集されて蓄積することが防止されている。
【００７３】
さらに、除塵機６５及び破砕機４５ｄよりも下流側には、除塵機６５又は破砕機４５ｄによって処理がなされた被処理水を汚水処理場へ移送する汚水ポンプ８２と、除塵機６５又は破砕機４５ｄによって処理がなされた被処理水を海又は河川に移送する雨水ポンプ８１と、が設けられ、制御装置９８は、水路内の水位が基準水位９ｂよりも低いと判断された場合に汚水ポンプ８２を稼働させる一方、水路内の水位が基準水位９ｂよりも高いと判断された場合に雨水ポンプ８１を稼働させる。
【００７４】
これにより、晴天時等で被処理水のほとんどが汚水である場合に、破砕機４５ｄによって夾雑物が処理された被処理水が汚水処理場に移送されて好適に処理される一方、雨天時で汚水に比して大量の雨水が被処理水中に含まれる場合に、除塵機６５によって夾雑物が処理された被処理水が河川等に移送されて放流される。このため、汚水がほとんどである被処理水と雨水を大量に含んだ被処理水とを各々適切に処理することが可能とされる。
【００７５】
また、破砕機４５ｄが被処理水に浸漬された状態での回転破砕刃４５ｆの上端近傍の高さは、雨水が多い場合と汚水がほとんどの場合との境界の水位に対応する基準水位の位置とほぼ同等とされているので、被処理水の流量が増えて水位が破砕機４５ｄの上端に達して破砕機４５ｄの処理能力の限界に達するタイミングで、被処理水の水位が基準水位に達し破砕機４５ｄが上昇されるので、破砕機４５ｄを効率よく活用できる。
【００７６】
また、制御装置９８は、小水路１５〜１８内の水位が基準水位よりも低いと判断された場合に破砕ユニット４５を稼働させる一方、小水路１５〜１８内の水位が基準水位よりも高いと判断された場合に破砕ユニット４５を停止させるので、破砕ユニット４５が水面上に位置する場合にこの破砕ユニット４５の駆動が停止され、動力が不要とされるので、ランニングコストが削減されている。
【００７７】
また、破砕ユニット４５は、破砕機４５ｄと共に小水路１５〜１８を横断するように小水路１５〜１８に設置され被処理水中の夾雑物を捕集する円筒スクリーン４５ａと、円筒スクリーン４５ａに捕集された夾雑物を破砕機４５ｄに移送するスクレーパ４５ｂと、を備え、昇降装置５５によって破砕機４５ｄの昇降運動に合わせて円筒スクリーン４５ａ及びスクレーパ４５ｂが上下に昇降運動される。このため、破砕機４５ｄで夾雑物の破砕がなされる場合に、破砕機４５ｄに比して通過抵抗の少ない円筒スクリーン４５ａとスクレーパ４５ｂとによって被処理水の夾雑物の処理がより好適に行える。また、除塵機６５によって被処理水の処理が行われる際には、円筒スクリーン４５ａ、スクレーパ４５ｂが各々破砕機４５ｄと共に水面上に上昇されるので、比較的大きな夾雑物がこれら円筒スクリーン４５ａ、スクレーパ４５ｂをつまらせることがない。
【００７８】
さらに、晴天時であって、ほとんど汚水のみが被処理水として流入する場合においても、時間帯や季節等によってその汚水の量が変化し被処理水の量が変動することがある。ところが、水路部１１は並列する複数の小水路１５〜１８に分割され、除塵機６５、破砕機４５ｄを含む破砕ユニット４５及び昇降装置５５がこの小水路１５から１８毎に設けられると共に、小水路１５〜１８には破砕機４５ｄよりも上流側に被処理水の各々の水路への流入・遮断を制御可能な流入ゲート（ゲート）３５が各々設けられており、晴天時において、汚水を主成分とする被処理水の水量が変化する場合でも、各々のゲート３５を制御して被処理水を流入させる小水路１５〜１８の数を変更することにより、被処理水中の夾雑物を各々破砕機４５ｄによって効率的に処理できている。
【００７９】
なお、本発明に係る夾雑物処理装置及び夾雑物処理方法は、上記実施形態に限定されるものではなく、種々の変形態様をとることが可能である。
【００８０】
例えば、上記実施形態においては、除塵機６５を破砕機４５ｄよりも下流側に配置しているが、汚水中の夾雑物が雨水中の夾雑物よりも十分小さい場合等には、除塵機６５を破砕機４５ｄよりも上流側に配置してもよい。
【００８１】
また、各ポンプ８１，８２の運転の開始は、さらに、槽部１２における処理済みの被処理水の水位が所定の水位を超えてからとしてもよい。
【００８２】
また、上記実施形態においては、制御装置９８によって、夾雑物処理装置１０を自動制御しているが、被処理水の水位をオペレータ等が測定し、この水位に基づいてオペレータ等が夾雑物処理装置１０の除塵機６５や昇降装置５５や破砕ユニット４５等を制御するようにしてもよい。
【００８３】
また、上記実施形態においては、水路部１１が４つの小水路１５〜１８に分割されているが、晴天時における汚水の流量変動があまりない場合等には、分割されない一つの水路としてもよい。この場合でも、基準水位９ｂは、晴天時等においてほとんど汚水のみが被処理水として流入する場合の被処理水の水量と、雨天時等において雨水が大量に含まれる場合の被処理水の水量と、の間の境界の水量に対応する水位とすればよい。
【００８４】
また、上記実施形態では、水位センサ７１によって水路内の水位を測定しているが、水路を流れる被処理水の水量に関する情報を取得すればこれに限られず、例えば、流量計等によって被処理水の水量を取得してもよい。この場合、制御装置９８は、取得された流量を、境界となる被処理水の水量（所定の基準値）と比較することにより、除塵機６５や破砕機４５ｄの制御をすればよい。
【００８５】
また、上記実施形態では、夾雑物処理装置１０を下水道のポンプ場での夾雑物処理に採用しているが、例えば、下水処理場の流入口での夾雑物処理、河川におけるし渣処理、雨水ポンプ場での不明水対策等、雨水が合流されて水位レベルが大きく変動する被処理水を処理する場所に適用できる。
【００８６】
また、図１に点線で示すように、第二区隔壁２１を第二槽部１４内に延長した隔壁２２２によって第二槽部１４内を２つに分割すると共に分割された２つの領域間の連通・遮断を制御可能とするゲート２２２ｂ及びモータ２２２ａをこの隔壁２２２に設置したり、第二区隔壁２２を第一槽部１３内に延長した隔壁２２０によって第一槽部１３を２つに分割すると共に分割された２つの領域間の連通・遮断を制御可能とするゲート２２０ｂ及びモータ２２０ａをこの隔壁２２０に設置したりしても良い。
【００８７】
【発明の効果】
本発明の夾雑物処理装置及び夾雑物処理方法によれば、被処理水の水量に関する情報を取得し被処理水の水量が所定の基準値より高いか低いかを判断することにより、晴天時等で雨水が少なくて被処理水の水量が少なく被処理水のほとんどが汚水である場合と、雨天時で雨水が多くて被処理水の水量が多く汚水に比して大量の雨水が被処理水中に含まれ場合とを好適に判断できる。そして、被処理水のほとんどが汚水である場合には、破砕手段を被処理水中に浸漬して被処理水中の屎尿や残飯等の夾雑物を破砕し夾雑物の処理を好適に行わせる一方、除塵機によって夾雑物を掻き上げないことにより夾雑物を水面上に露出させず、屎尿や残飯等の夾雑物からの臭気の発生や虫等の発生を抑制する。
【００８８】
これに対して、汚水に比して大量の雨水が被処理水中に含まれる場合には、破砕手段を水面上に移動し、雨水によってもたらされ、屎尿や残飯に比して大きな夾雑物を破砕手段に巻き込まれないようにする一方、除塵機を稼働して被処理水中の大きな夾雑物を掻き上げ被処理水中の夾雑物の処理を行う。
【００８９】
このため、雨水と汚水とが合流された被処理水が水路に供給され、天候等によって被処理水の質や量が大きく変動しても被処理水中の夾雑物を適切に処理することが可能となる。
【図面の簡単な説明】
【図１】本発明の実施形態に係る夾雑物処理装置の上面図である。
【図２】図１のＩＩ−ＩＩ矢視図である。
【図３】図１のＩＩＩ−ＩＩＩ矢視図である。
【図４】図１の制御装置の制御フローを示す図である。
【図５】図５に続く制御フローを示す図である。
【符号の説明】
９ｂ…基準水位（所定の基準値）、１０…夾雑物処理装置、１１…水路部（水路）、１５…第一水路（小水路）、１６…第二水路（小水路）、１７…第三水路（小水路）、１８…第四水路（小水路）、３５…流入ゲート（ゲート）、４５ｂ…スクレーパ（移送手段）、４５ａ…円筒スクリーン（捕集手段）、４５ｆ…回転破砕刃（破砕手段）、５５…昇降装置（昇降手段）、６５…除塵機、７１…水位センサ（水量取得手段）、８１…雨水ポンプ、８２…汚水ポンプ、９８…制御装置（制御手段）。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a contaminant processing apparatus and a contaminant processing method for processing contaminants in water to be treated by crushing or scraping.
[0002]
[Prior art]
Conventionally, in a combined sewer system in which treated water that is a combination of rainwater, which is drainage due to natural phenomena, and sewage, which is drainage due to life or business, flows into the sewer pipe, It has a pumping station that transfers the treated water that has flowed down. In such a pump station, a contaminant processing device is provided that crushes or removes contaminants so that the pumps and the like are not clogged by contaminants in the water to be treated.
[0003]
As such a contaminant treatment apparatus, a crusher that crushes contaminants in the water to be treated, and a dust remover that collects the crushed impurities and scrapes them on the water surface and removes them from the treated water are pumps. Are provided in series in this order in the previous water channel (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-195371
[0005]
[Problems to be solved by the invention]
However, when the above-described foreign matter processing apparatus is used, the following problems may occur.
[0006]
In other words, almost all of the treated water is only sewage during fine weather, and such urine and spillage in such sewage are scraped up onto the surface of the water by the dust remover, which may cause the generation of malodors and insects. there were. On the other hand, when it rains, a large amount of rainwater is contained in the treated water compared to sewage, and this rainwater contains a lot of large impurities compared to urine and urine. That is, damage or the like may occur.
[0007]
This invention is made | formed in view of the said subject, and it aims at providing the foreign material processing apparatus and the foreign material processing method which can process the to-be-processed water of a combined sewer system suitably.
[0008]
[Means for Solving the Problems]
The contaminant treatment apparatus according to the present invention is a contaminant treatment apparatus for treating contaminants in the for-treatment water flowing through a water channel, a crushing means for crushing the contaminants in the for-treatment water, and an elevating means for raising and lowering the crushing means up and down And a dust remover that is installed in the water channel and collects contaminants in the treated water and can be scraped up on the surface of the water, a water amount obtaining means for obtaining the amount of treated water, and information on the obtained amount of treated water And determining whether or not the amount of water to be treated is higher or lower than a predetermined reference value, and when the amount of water to be treated is lower than a predetermined reference value, the scraping of dust by the dust remover is stopped. The lifting / lowering means is controlled so that the crushing means is immersed in the water to be treated, and when the amount of water to be treated is higher than a predetermined reference value, the dust removal device is scraped up by the dust remover and the crushing means is treated with the water to be treated. Ascend to be above the water surface of Characterized in that it comprises a control means for controlling the means.
[0009]
Further, the contaminant treatment method according to the present invention comprises a crushing means for crushing impurities in the water to be treated flowing through the water channel, a lifting means for raising and lowering the crushing means up and down, and a contaminant in the water to be treated installed in the water channel. The amount of water to be treated is obtained in a method for treating impurities in a treated water flowing through a water channel using a dust treatment device comprising a dust remover that can be collected and scraped onto a water surface. It is determined whether the amount of water to be treated is higher or lower than a predetermined reference value based on the information on the water amount acquisition step and the acquired amount of water to be treated, and the amount of water to be treated is lower than the predetermined reference value. When it is low, scraping of the dust by the dust remover is stopped and the crushing means is immersed in the water to be treated by the lifting means, and when the amount of the water to be treated is higher than a predetermined reference value, the dust is scraped by the dust remover. Lift and lift The crushing means, characterized in that it comprises a control step of pulling above the water surface of the water to be treated.
[0010]
According to the foreign matter treatment apparatus and the foreign matter treatment method of the present invention, the information on the amount of water to be treated is acquired, and it is judged whether the amount of water is higher or lower than a predetermined reference value. When the amount of water is small and the amount of rainwater is small and most of the treated water is sewage, and when the amount of treated water is large in rainy weather and a large amount of rainwater is contained in the treated water Is suitably determined. And when most of to-be-processed water is dirty water, while the crushing means immersed in to-be-processed water crushes foreign substances, such as manure and leftovers in to-be-processed water, processing of a contaminant is performed suitably. In addition, since the dust is not scraped up by the dust remover, the dust is not exposed on the surface of the water, and the generation of odors and insects from the dust such as manure and leftovers is suppressed. On the other hand, when a large amount of rainwater is contained in the water to be treated as compared with sewage, the crushing means is moved on the surface of the water and brought by the rainwater, and there is a large amount of contaminants compared with manure and leftovers. Further, it is prevented from being caught in the crushing means, and further, large dusts in the water to be treated are suitably scraped up by the dust remover, and the dusts in the water to be treated are suitably treated.
[0011]
Here, it is preferable that the dust remover is installed on the downstream side of the crushing means in the water channel, and is capable of passing the impurities crushed by the crushing means.
[0012]
According to this, when the dust in the dust remover is not scraped up, the dust is crushed by the crushing means and reaches the dust remover, and the crushed dust can pass through the dust remover. It is possible to prevent impurities from being collected and accumulated in a dust remover that is not scraped up.
[0013]
Further, on the downstream side of the dust remover and the crushing means, a sewage pump that transfers the treated water treated by the dust remover or the crushing means to the sewage treatment plant, and a treatment treated by the dust remover or the crushing means. And a rainwater pump for transferring water to the sea or river, and the control means operates the sewage pump when the amount of water to be treated is determined to be lower than a predetermined reference value, It is preferable to operate the rainwater pump when it is determined that the amount of water is higher than a predetermined reference value.
[0014]
According to this, when most of the water to be treated is sewage in fine weather, etc., the water to be treated in which impurities are treated by the crushing means is preferably transferred to the sewage treatment plant and processed, while in rainy weather When a large amount of rainwater is contained in the water to be treated as compared with the sewage, the water to be treated in which impurities are treated by the dust remover is transferred to a river or the like and discharged. For this reason, it is possible to appropriately treat the water to be treated which is mostly sewage and the water to be treated containing a large amount of rainwater.
[0015]
Here, it is preferable that the information regarding the amount of water is the water level of the water channel. As a result, the amount of water to be treated with a large amount of impurities can be suitably acquired.
[0016]
Moreover, it is preferable that the height of the upper end of the crushing means in a state where the crushing means is immersed in the water to be treated is substantially equal to the water surface position in the water channel when the amount of water having a predetermined reference value flows. .
[0017]
According to this, at the timing when the flow rate of treated water increases and the water level reaches the upper end of the crushing means and reaches the limit of the processing capacity of the crushing means, the amount of treated water reaches the reference value and the crushing means is raised. Therefore, the crushing means can be used efficiently.
[0018]
The control means preferably stops the crushing means when it is determined that the amount of water to be treated is higher than a predetermined reference value.
[0019]
According to this, when the amount of water to be treated is higher than a predetermined reference value and the crushing means is located on the water surface, the crushing means is stopped and no power is required, so that the running cost can be reduced.
[0020]
In addition, the collecting means for collecting the contaminants in the water to be treated installed in the water channel so as to cross the water channel together with the crushing means, the transfer means for transferring the contaminants collected by the collecting means to the crushing means, Preferably, the elevating means moves the collecting means and the transfer means up and down in accordance with the elevating movement of the crushing means.
[0021]
According to this, when the water to be treated is treated by the crushing means, the crushing treatment of the impurities in the water to be treated is more suitably performed by the collecting means and the transfer means that have less passage resistance than the crushing means. Yes. In addition, when the water to be treated is processed by the dust remover, the collection means, the transfer means, and the crushing means are respectively raised on the water surface, so that relatively large contaminants are collected in these collection means, transfer means, It does not pinch the crushing means.
[0022]
Further, even when it is fine weather and almost only sewage flows as the water to be treated, the amount of the sewage may vary depending on the time zone, season, etc., and the amount of water to be treated may vary. Therefore, the water channel is divided into a plurality of small water channels arranged in parallel, and a dust remover, a crushing means, and an elevating device are provided for each small water channel, and each water channel of the water to be treated is upstream of the crushing device in the small water channel. It is preferable that a gate capable of controlling inflow and shut-off is provided.
[0023]
According to this, even when the amount of treated water whose main component is sewage changes in fine weather, by changing the number of water channels into which the treated water flows by controlling each gate, Underwater impurities can be efficiently treated by the crushing means.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to FIG. 1 and FIG. 2, a preferred embodiment of the contaminant processing apparatus according to the present invention will be described in detail. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a top view of a contaminant processing apparatus 10 according to the present embodiment, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 is a view taken along the line III-III in FIG.
[0025]
As shown in FIGS. 1 and 2, the contaminant treatment apparatus 10 according to this embodiment is installed in a pumping station 5 that transports water to be treated flowing down in a sewer pipe 1 to a sewage treatment plant or a river. ing. The sewer pipe 1 is a combined type in which treated water in which rainwater, which is drainage resulting from natural phenomena, and sewage, which is drained from life or business, is combined, flows into the pump station 5 It is provided at the downstream end of the sewer pipe 1.
[0026]
The pump station 5 is a water channel through which treated water from the sewer pipe 1 flows, and a water channel (water channel) 11 in which impurities in the treated water are treated, and the depth thereof is deeper than the water channel 11. And a tank unit 12 in which the water to be treated after the impurities are treated is stored.
[0027]
The water channel part 11 and the tank part 12 in the pump station 5 are divided into two in the vertical direction of FIG. 1 by a first partition wall 20 which is parallel to and perpendicular to the direction in which the water to be treated flows.
[0028]
Two portions of the water channel portion 11 partitioned by the first partition wall 20 are further divided into two small parts in the vertical direction of FIG. 1 by second partition walls 21 and 22 parallel to the first partition wall 20. Divided into waterways. Here, a portion sandwiched between the second partition wall 22 and the wall of the pumping station 5 is a first water channel (small water channel) 15, and a portion sandwiched between the second partition wall 22 and the first partition wall 20 is a second water channel ( (Small water channel) 16, the portion sandwiched between the first partition wall 20 and the second partition wall 21 is the third water channel (small water channel) 17, and the portion sandwiched between the second partition wall 21 and the wall of the pump station 5 is the fourth. The water channel (small water channel) 18 is assumed. Moreover, the treated water from the first water channel 15 and the second water channel 16 in the tank unit 12 flows into the first tank unit 13 and the treated water from the third water channel 17 and the fourth water channel 18 in the tank unit 12. Let the inflow part be the 2nd tank part 14. FIG.
[0029]
The first water channel 15, the second water channel 16, the third water channel 17, and the fourth water channel 18 are opened and closed by the motor 35 a in order from the upstream side, and are connected to the small water channels 15 to 18 from the sewer pipe 1. An inflow gate 35 that controls the inflow and shutoff of the water to be treated, a crushing unit 45 that can crush the inflowing contaminants, and collects and removes the impurities in the water to be treated. And a dust remover 65 are provided.
[0030]
Moreover, as shown in FIGS. 1-3, in the part where the crushing unit 45 is installed in the 1st waterway 15, the 2nd waterway 16, the 3rd waterway 17, and the 4th waterway 18, a pair of auxiliary walls 46 are provided on both sides. , 47 are provided, and the width of the small water passages 15 to 18 in this portion is narrower than the width of the water passage in the portion where the dust remover 65 is provided. 2 and 3, the height of the auxiliary walls 46 and 47 is lower than that of the first partition wall 20 and the second partition walls 21 and 22.
[0031]
The crushing unit 45 includes a cylindrical screen (collecting means) 45a and a crushing machine 45d. The cylindrical screen 45a and the crushing machine 45d respectively have small water channels 15 to 18 whose widths are narrowed by auxiliary walls 46 and 47, respectively. It is arranged side by side so as to cross.
[0032]
The cylindrical screen 45a has a vertical cylindrical shape in which a plurality of annular plate materials are stacked with a predetermined distance apart in the vertical direction, and impurities in the treated water flowing through the small water channels 15 to 18 Collect on an annular plate. And this cylindrical screen 45a lets the to-be-processed water by which the contaminant was collected pass downstream from the clearance gap between boards.
[0033]
Each cylindrical screen 45a has a scraper 45b as a transfer means for transferring the foreign matter collected by each cylindrical screen 45a to the crusher 45d side. In this scraper 45b, a plurality of rod bodies are vertically stacked corresponding to the space between the annular plates, and the scraper 45b is arranged around a vertical axis that is eccentric to the upstream side of the small water channels 15 to 18 with respect to the central axis of the annular plate of the cylindrical screen 45a. Each of the cylindrical screens 45a is rotated by a motor 45c provided on the upstream side of the cylindrical screen 45a so as to protrude upstream from the annular plate material of the cylindrical screen 45a. The foreign matter collected in (1) is scraped off by rotation and transferred to a crusher 45d arranged in parallel.
[0034]
The crusher 45d has a pair of rotary crushing blades (crushing means) 45f and 45f that are rotated by a motor 45e installed for each crusher 45d, and when the water to be treated passes through, Crush the impurities.
[0035]
The crushing unit 45 can be moved up and down independently by an elevating device (elevating means) 55. As shown in FIGS. 2 and 3, the lifting device 55 includes a wire 55 b for individually lifting each crushing unit 45, a motor 55 a for winding each wire 55 b, and a water channel portion in which each motor 55 a is installed. 11 and a frame 55c extending in the width direction and erected on the fixed side. The lifting device 55 is separated from the bottom surface of the water channel by a predetermined distance from the state where each crushing unit 45 is placed on the bottom surface of the water channel as shown in FIG. It can be lifted to the state.
[0036]
Here, the crusher 45d and the cylindrical screen 45a are lifted so that the lower ends thereof are positioned higher than the upper ends of the first partition wall 20 and the second partition walls 21 and 22, It is possible to pull up to the upper surface of the water to be treated introduced into the water channel.
[0037]
Further, with the crusher 45d placed on the bottom surface of each water channel, the height of the upper end of the rotary crushing blade 45f of the crusher 45d is substantially the same as a predetermined reference water level 9b described later.
[0038]
As shown in FIGS. 1 and 2, the dust remover 65 includes a vertical screen 65 a in which a plurality of plates that are long in the vertical direction are arranged in the horizontal direction at predetermined intervals. This vertical screen 65a crosses each small water channel 15-18, and as shown in FIG. 2, with respect to each small water channel 15-18 so that the upper part may incline slightly downstream (illustration right side). is set up.
[0039]
The vertical screen 65a collects contaminants (sediment) of a predetermined size or more in the treated water flowing from the upstream side between the plates, while treating the treated water in which the contaminants are collected between the plates. Pass through the gap downstream. Here, it is preferable that the opening of the vertical screen 65a has such a size as to allow passage of impurities crushed by the crusher 45d. Specifically, for example, when the breaking size of the crusher 45d is 3 cm square, the opening of the vertical screen 65a may be 5 cm.
[0040]
In addition, as shown in FIG. 2, the dust remover 65 includes a main chain 65b that circulates around a circular path along the vertical screen 65a on the upstream side of the vertical screen 65a, a motor 65d that rotates the main chain 65b, A plurality of rakes 65c, which are attached to the chain 65b and collected on the vertical screen 65a along with the revolving motion of the main chain 65b, are scraped up along the vertical screen 65a and up to the upper end of the vertical screen 65a. And a wiper 65e that wipes down impurities from the rake 65c downward. In FIG. 1, the illustration of the dust remover 65 is omitted except for the vertical screen 65a and the motor 65d.
[0041]
As shown in FIG. 2 and FIG. 1, the dust scraped up and removed by each dust remover 65 is provided in the upper part of the pump station 5 and extends in the width direction over the small water channels 15 to 18. It is configured to be collected by an existing belt conveyor 67 and further stored in a hopper 69 via a belt conveyor 68 as shown in FIG.
[0042]
Further, as shown in FIG. 1, a water level sensor (water amount acquisition means) 71 that acquires the water level of the water to be treated in the water channel part 11 is provided upstream of the inflow gate 35 in the water channel part 11.
[0043]
The first tank unit 13 is provided with a plurality of sewage pumps 82 for transferring the water to be treated in the first tank unit 13 to the sewage treatment plant. A plurality of rainwater pumps 81 for transferring the water to be treated to a river or the like are provided. Here, the capacity of the rainwater pump 81 is higher than the capacity of the sewage pump 82.
[0044]
Furthermore, the first partition wall 20 can communicate with the first tank section 13 and the second tank section 14 at a portion that partitions the first tank section 13 and the second tank section 14 and is opened and closed by a motor 19a. There is provided a communication gate 19 for controlling.
[0045]
And in the contaminant processing apparatus 10 of this embodiment, it is connected to the water level sensor 71, and the water level of the to-be-processed water in the water channels 15-18 is acquirable, and according to the acquired water level, each raising / lowering apparatus 55 A control device 98 that controls driving of the drive motor 55a, the drive motor 65d of each dust remover 65, and the like is provided.
[0046]
Specifically, the control device 98 performs control by comparing the acquired water level with the lowest water level 9c, the reference water level 9b, and the highest water level 9a shown in FIGS.
[0047]
Here, the minimum water level 9c is a water level corresponding to the minimum amount of water required for crushing in the crushing unit 45, and here, the rotation crushing blade 45f of the crushing machine 45d in a state where the crushing unit 45 is lowered. The water level near the lower end. The reference water level 9b is a boundary between the amount of water when the water to be treated is mostly sewage only when it is fine and the amount of water when a large amount of rainwater is included in the water to be treated when it is raining or the like. The (predetermined reference value) is the water level of the water channel when introduced into all the small water channels 15-18. The maximum water level 9 a is a water level corresponding to the maximum amount of treated water in the contaminant treatment apparatus 10, and is near the upper end of the first partition wall 20 higher than the upper end of the auxiliary wall 46.
[0048]
Further, the control device 98 includes a drive motor 35a for each inflow gate 35 of each of the small water channels 15 to 18, a drive motor 45c, 45e for each crushing unit 45, each sewage pump 82, each rainwater pump 81, and a drive motor 19a for the communication gate 19. , And the drive motors of the belt conveyors 67 and 68, and these drives can also be controlled.
[0049]
Next, the operation of the control device 98 in the contaminant processing apparatus 10 having the control device 98, the inflow gate 35, the lifting device 55, the crushing unit 45, the dust remover 65, the rainwater pump 81, the sewage pump 82, and the like will be described. 4 and the flowchart of FIG.
[0050]
The inflow gates 35 of the small water channels 15 to 18 are closed in advance, the crushing units 45 are lowered, and the crushing units 45, the dust removers 65, the sewage pump 82, the rainwater pump 81, and the belt conveyor 67 are stopped. The explanation starts from the stopped state.
[0051]
First, in step S101, the water level of water to be treated is acquired and a determination is made based on the water level. If the water level is lower than the minimum water level 9c, the amount of water to be treated is small and no stop treatment is required, and the stop state is maintained. In step 101, the determination based on the water level is performed again.
[0052]
On the other hand, if the water level is equal to or higher than the predetermined minimum water level 9c, it is necessary to treat the treated water and most of the treated water is sewage, and the process proceeds to step S103 to treat the treated water. In step S103, the motor 35a is driven to open the inflow gate 35 of the first water channel 15, and the water to be treated flows into the first water channel 15, and the motor 45c and the motor 45e of the first water channel 15 are driven. The crushing unit 45 of the first water channel 15 is driven to crush the contaminants in the water to be treated that have flowed into the first water channel 15, and the sewage pump 82 is driven to pass through the crushing unit 45 and the dust remover 65. The treated water stored in the first tank unit 13 is transferred to the sewage treatment plant. When such a treatment is performed, the dust remover 65 is not operated, so that impurities in the for-treatment water are not scraped up on the water surface. Moreover, since the mesh of the vertical screen 65a of the dust remover 65 can pass the dust crushed by the crusher 45d, the treated water containing the crushed dust is delayed by the dust remover 65. It flows into the 1st tank part 13 without.
[0053]
In this way, when the water to be treated is treated, in step S105, the determination based on the water level of the water to be treated is performed again. Here, if the water level becomes lower than the lowest water level 9c, the treatment of the water to be treated is finished, and in step S107, the inflow gate 35 of the first water channel 15 is closed, and the crushing unit 45 of the first water channel 15 is stopped. Then, the sewage pump 82 is stopped and the process returns to step S101.
[0054]
On the other hand, if the water level is equal to or higher than the minimum water level 9c and lower than the reference water level 9b, the process is continued as it is in the state where the water to be treated is sewage, and the determination based on the water level is performed again in step S105.
[0055]
If the water level is equal to or higher than the reference water level 9b, the process proceeds to step S109 to increase the processing amount. In step S109, the inflow gate 35 of the second water channel 16 is opened, and the crushing unit 45 of the second water channel 16 is driven. As a result, the water to be treated flows into the first water channel 15 and the second water channel 16, and the impurities therein are crushed by each crushing unit 45 and discharged from the first tank unit 13.
[0056]
In this way, when the water to be treated is treated, in step S111, the determination based on the water level is performed again. Here, if the water level is lower than the lowest water level 9c, the inflow gate 35 of the second water channel 16 is closed and the crushing unit 45 of the second water channel 16 is closed in step S113 in order to reduce the treatment capacity of the water to be treated. Stop and return to step S105. As a result, the water to be treated is appropriately treated only by the first water channel 15.
[0057]
On the other hand, if the water level is equal to or higher than the minimum water level 9c and less than the reference water level 9b, the process is continued as it is, and the determination based on the water level is performed again in step S111.
[0058]
On the other hand, if the water level is equal to or higher than the predetermined reference water level 9b, the process proceeds to step S115 to increase the processing capacity. In step S115, the inflow gate 35 of the third water channel 17 is opened to drive the crushing unit 45 of the third water channel 17, and the motor 19a is driven to open the communication gate 19. As a result, the treated water is crushed by the third water channel 17 in addition to the first water channel 15 and the second water channel 16, and the treated water that has flowed into the second tank portion 14 through the second water channel 16. The treated water flows into the first tank 13 through the communication gate 19 and is transferred to the sewage treatment plant through the sewage pump 82.
[0059]
In this way, when the water to be treated is treated, a determination based on the water level is made in step S117. Here, if the water level is lower than the lowest water level 9c, the inflow gate 35 of the third water channel 17 is closed in step S119 to reduce the treatment capacity of the water to be treated, and the crushing unit 45 of the third water channel 17 is removed. At the same time, the communication gate 19 is closed and the process returns to step S111. As a result, the treated water is treated only by the first water channel 15 and the second water channel 16.
[0060]
On the other hand, if the water level is equal to or higher than the minimum water level 9c and less than the reference water level 9b, the process is continued as it is, and the determination based on the water level is performed again in step S117.
[0061]
If the water level is equal to or higher than the reference water level 9b, the process proceeds to step S120 to further increase the processing capacity. In step S120, the inflow gate 35 of the fourth water channel 18 is opened, and the crushing unit 45 of the fourth water channel 18 is driven. As a result, the treated water is crushed by the fourth water channel 18 in addition to the first water channel 15, the second water channel 16, and the third water channel 17.
[0062]
In this way, when the water to be treated is treated, a determination based on the water level is made in step S121. Here, if the water level is lower than the minimum water level 9c, the inflow gate 35 of the fourth water channel 18 is closed and the crushing unit 45 of the fourth water channel 18 is closed in step S123 in order to reduce the treatment capacity of the water to be treated. Stop and return to step S117. As a result, the treated water is treated only by the first water channel 15, the second water channel 16 and the third water channel 17.
[0063]
If the water level is equal to or higher than the minimum water level 9c and less than the reference water level 9b, the process is continued as it is, and the determination based on the water level is performed again in step S121.
[0064]
In addition, even when the crushing processing of the contaminants is performed using the four small water channels 15 to 18, if the water level becomes the reference water level 9b or more, the water to be treated is mainly rainwater and the crushing unit. Since the limit of the processing capacity by 45 is reached, the process proceeds to step S125 in order to switch to the processing of impurities by the dust remover 65.
[0065]
In step S125, all crushing units 45 are stopped, all lifting devices 55 are driven to raise all crushing units 45, all dust removers 65 are operated, the sewage pump 82 is stopped, and the rainwater pump 81 is driven, and the conveyors 67 and 68 are driven.
[0066]
As a result, the water to be treated can pass through each of the small water channels 15 to 18 without being interrupted by the crushing unit 45, and further, foreign matter in the water to be treated is collected and scraped up by the dust remover 65, and then the belt. Collected in the hopper 69 via the conveyors 67 and 68, the contaminants of the water to be treated are removed and processed. And the to-be-processed water from which impurities were removed is discharged to a river etc. via the rainwater pump 81.
[0067]
In this way, when the water to be treated is treated, a determination based on the water level is made in step S127. Here, if the water level is lower than the reference water level 9b, in order to switch to the processing by the crushing unit 45, in step S129, all the lifting devices 55 are driven to lower all the crushing units 45, and all the crushing units 45 are driven. , All the dust removers 65 are stopped, the sewage pump 82 is moved, the rainwater pump 81 is stopped, the conveyors 67 and 68 are stopped, and the process returns to step S121. As a result, the water to be treated is treated by the crushing unit 45 in the first water channel 15 to the fourth water channel 18, and the treated sewage is transferred to the sewage treatment by the sewage pump 82.
[0068]
If the water level is equal to or higher than the reference water level 9b and less than the maximum water level 9a, it is assumed that the water to be treated is rainwater and the treatment by the dust remover 65 is continued in this state, and the determination based on the water level is performed again in step S127. Do.
[0069]
On the other hand, if the water level is equal to or higher than the maximum water level 9a even if the dust removal device 65 is used to process the foreign matter, a warning is displayed in step 131 and the control is stopped.
[0070]
In such a foreign substance processing apparatus, the water level of the small water channels 15 to 18 is acquired, and the amount of rainwater at the time of fine weather etc. is compared by comparing this water level with the appropriately defined reference water level 9b. It is suitable for cases where the amount of water to be treated is low and the water level is low and most of the water to be treated is sewage, and in case of rain, a large amount of rainwater merges and the amount of water to be treated is high and the water level is high. Will be judged. And when the water level in a water channel is lower than a reference | standard water level, the scraping-up of the foreign material by the dust remover 65 is stopped, and the crusher 45d is immersed in to-be-processed water by the raising / lowering apparatus 55. FIG. For this reason, when the water level in the water channel is low and most of the water to be treated is sewage, impurities such as manure and leftovers in the water to be treated are crushed by the crusher 45d immersed in the water to be treated. While the treatment is performed favorably, the dust remover 65 does not scrape up the foreign matter, so the foreign matter is not exposed on the water surface, and the generation of odors and insects from the foreign matter such as manure and leftovers is suppressed. And is preferred for public health.
[0071]
On the other hand, when it is determined that the water levels in the small water channels 15 to 18 are higher than the reference water level, the dust removal device 65 scrapes up the foreign substances and the lifting device 55 causes the crushing unit 45 to be treated water. Is raised above the surface of the water. For this reason, when the water level in the water channel is high and a large amount of rainwater is contained in the water to be treated compared to sewage, impurities in the water to be treated, particularly those brought by rainwater and large in comparison with manure and leftovers, are crushed. The crushing machine 45d is prevented from being clogged or broken. Further, the dust remover 65 suitably scrapes large contaminants in the water to be treated, so that the impurities in the water to be treated are suitably treated.
[0072]
In addition, the dust remover 65 is installed downstream of the crusher 45d in the small water channels 15 to 18, and the opening of the vertical screen 65a of the dust remover 65 is set so that impurities crushed by the crusher 45d can pass through. Has been. Therefore, when the dust is not scraped up by the dust remover 65, the dust is crushed by the crusher 45d and reaches the dust remover 65, and the crushed dust can pass through the dust remover 65. Therefore, it is possible to prevent the foreign matter from being collected and accumulated on the vertical screen 65a of the dust remover 65 that is not scraped up.
[0073]
Furthermore, on the downstream side of the dust remover 65 and the crusher 45d, a sewage pump 82 for transferring the treated water treated by the dust remover 65 or the crusher 45d to the sewage treatment plant, and the dust remover 65 or the crusher 45d. And a storm water pump 81 for transferring the treated water treated by the above to the sea or river, and the control device 98 controls the sewage pump 82 when the water level in the water channel is determined to be lower than the reference water level 9b. On the other hand, the rainwater pump 81 is operated when it is determined that the water level in the water channel is higher than the reference water level 9b.
[0074]
As a result, when most of the water to be treated is sewage in fine weather, etc., the water to be treated in which impurities are treated by the crusher 45d is transferred to the sewage treatment plant and is preferably treated. When a large amount of rainwater is contained in the water to be treated as compared with the sewage, the water to be treated in which impurities are treated by the dust remover 65 is transferred to a river or the like and discharged. For this reason, it is possible to appropriately treat the water to be treated which is mostly sewage and the water to be treated containing a large amount of rainwater.
[0075]
The height near the upper end of the rotary crushing blade 45f when the crusher 45d is immersed in the water to be treated is the position of the reference water level corresponding to the water level at the boundary between the case where there is a lot of rainwater and the case where there is a lot of sewage. Therefore, when the flow rate of the water to be treated increases and the water level reaches the upper end of the crusher 45d and reaches the limit of the processing capacity of the crusher 45d, the water level of the water to be treated reaches the reference water level. Since the crusher 45d is raised, the crusher 45d can be used efficiently.
[0076]
The control device 98 operates the crushing unit 45 when it is determined that the water level in the small water channels 15 to 18 is lower than the reference water level, while the water level in the small water channels 15 to 18 is higher than the reference water level. Since the crushing unit 45 is stopped when judged, the driving of the crushing unit 45 is stopped when the crushing unit 45 is located on the water surface, and no power is required, so the running cost is reduced.
[0077]
The crushing unit 45 is installed in the small water channels 15 to 18 so as to cross the small water channels 15 to 18 together with the crusher 45d, and collects on the cylindrical screen 45a and collects impurities in the water to be treated. And a scraper 45b for transferring the contaminated material to the crusher 45d. The cylindrical screen 45a and the scraper 45b are moved up and down by the lifting device 55 in accordance with the lifting and lowering motion of the crusher 45d. For this reason, when the crusher 45d crushes impurities, the cylindrical screen 45a and the scraper 45b, which have less passage resistance than the crusher 45d, can more suitably treat the impurities in the water to be treated. Further, when the water to be treated is processed by the dust remover 65, the cylindrical screen 45a and the scraper 45b are raised together with the crusher 45d on the water surface, so that relatively large contaminants are generated in the cylindrical screen 45a and the scraper. 45b is not pinched.
[0078]
Furthermore, even when the sewage flows almost as sewage water in fine weather, the amount of sewage water may vary depending on the time zone, season, etc., and the amount of sewage water may vary. However, the water channel part 11 is divided into a plurality of parallel small water channels 15 to 18, and a crushing unit 45 including a dust remover 65 and a crusher 45 d and a lifting device 55 are provided for each of the small water channels 15 to 18. 15 to 18 are provided with inflow gates (gates) 35 that can control the inflow and shutoff of each water to be treated upstream of the crusher 45d. Even when the amount of water to be treated changes, by changing the number of small water channels 15 to 18 through which the water to be treated flows by controlling each gate 35, each of the impurities in the water to be treated is crushed. It can be processed efficiently by 45d.
[0079]
In addition, the foreign substance processing apparatus and foreign substance processing method which concern on this invention are not limited to the said embodiment, It can take a various deformation | transformation aspect.
[0080]
For example, in the above-described embodiment, the dust remover 65 is disposed downstream of the crusher 45d. However, when the contaminants in the sewage are sufficiently smaller than the contaminants in the rainwater, the dust remover 65 is used. You may arrange | position upstream from the crusher 45d.
[0081]
Further, the operation of each pump 81, 82 may be started after the water level of the treated water in the tank section 12 exceeds a predetermined water level.
[0082]
Moreover, in the said embodiment, although the contaminant treatment apparatus 10 is automatically controlled by the control apparatus 98, the operator etc. measure the water level of to-be-processed water, and an operator etc. based on this water level is a contaminant treatment apparatus. You may make it control 10 dust removers 65, the raising / lowering apparatus 55, the crushing unit 45, etc. FIG.
[0083]
Moreover, in the said embodiment, although the water channel part 11 is divided | segmented into the four small water channels 15-18, it is good also as one water channel which is not divided | segmented, when there is not much fluctuation of the flow rate of the sewage at the time of fine weather. Even in this case, the reference water level 9b is the amount of water to be treated when almost only sewage flows as treated water in clear weather and the amount of water to be treated when rainwater is contained in a large amount in rainy weather. The water level may correspond to the amount of water at the boundary between.
[0084]
Moreover, in the said embodiment, although the water level in a water channel is measured by the water level sensor 71, if it acquires the information regarding the amount of water of the to-be-processed water which flows through a water channel, it will not be restricted to this, For example, water to be processed with a flow meter etc. You may get the amount of water. In this case, the control device 98 may control the dust remover 65 and the crusher 45d by comparing the obtained flow rate with the amount of water to be treated (predetermined reference value) as a boundary.
[0085]
Moreover, in the said embodiment, although the contaminant processing apparatus 10 is employ | adopted for the contaminant treatment in the pumping station of a sewer, for example, the contaminant treatment in the inlet of a sewage treatment plant, the residue treatment in a river, rainwater It can be applied to a place where treated water whose water level changes greatly due to the combination of rainwater, such as measures against unknown water at pump stations.
[0086]
Further, as shown by a dotted line in FIG. 1, the inside of the second tank part 14 is divided into two by a partition 222 extending the second partition wall 21 into the second tank part 14, and between the two divided areas. The gate 222b and the motor 222a that can control communication / blocking are installed in the partition 222, or the first tank part 13 is divided into two by the partition 220 that extends the second partition wall 22 into the first tank part 13. In addition, a gate 220b and a motor 220a that can control communication / blocking between the two divided areas may be installed in the partition 220.
[0087]
【The invention's effect】
According to the foreign matter treatment apparatus and the foreign matter treatment method of the present invention, information on the amount of water to be treated is acquired, and it is determined whether the amount of water to be treated is higher or lower than a predetermined reference value. If there is little rain water and the amount of treated water is small, most of the treated water is sewage, and there is a lot of rain water in rainy weather and the amount of treated water is large. Can be suitably determined. And when most of the water to be treated is sewage, while the crushing means is immersed in the water to be treated to crush the foreign matter such as urine and leftovers in the water to be treated, the waste is preferably treated. By preventing the dust from being lifted up by the dust remover, the dust is not exposed on the surface of the water, and the generation of odors and insects from impurities such as manure and leftovers is suppressed.
[0088]
On the other hand, when a large amount of rainwater is contained in the water to be treated compared to sewage, the crushing means is moved on the surface of the water, and is brought about by rainwater. While preventing it from being caught in the crushing means, the dust remover is operated to scoop up large contaminants in the treated water to treat the contaminants in the treated water.
[0089]
For this reason, the treated water in which rainwater and sewage are combined is supplied to the water channel, and it is possible to appropriately treat the contaminants in the treated water even if the quality and quantity of the treated water greatly fluctuate due to the weather etc. It becomes.
[Brief description of the drawings]
FIG. 1 is a top view of a contaminant processing apparatus according to an embodiment of the present invention.
FIG. 2 is a view taken in the direction of arrows II-II in FIG.
FIG. 3 is a view taken in the direction of arrows III-III in FIG.
FIG. 4 is a diagram showing a control flow of the control device of FIG. 1;
FIG. 5 is a diagram showing a control flow following FIG. 5;
[Explanation of symbols]
9b ... reference water level (predetermined reference value), 10 ... contamination processing device, 11 ... water channel (water channel), 15 ... first water channel (small water channel), 16 ... second water channel (small water channel), 17 ... third Water channel (small water channel), 18 ... Fourth water channel (small water channel), 35 ... Inflow gate (gate), 45b ... Scraper (transfer means), 45a ... Cylindrical screen (collecting means), 45f ... Rotary crushing blade (crushing means) ), 55 ... Elevating device (elevating means), 65 ... Dust remover, 71 ... Water level sensor (water amount acquiring means), 81 ... Rainwater pump, 82 ... Sewage pump, 98 ... Control device (control means).

Claims

In the foreign matter processing apparatus which processes the foreign matter in the to-be-processed water which flows through a water channel,
Crushing means for crushing impurities in the treated water;
Elevating means for elevating the crushing means up and down;
A dust remover that is installed in the water channel and collects impurities in the water to be treated and can be scraped up on the water surface;
Water volume acquisition means for acquiring information on the amount of water to be treated;
When determining whether the amount of water to be treated is higher or lower than a predetermined reference value based on the acquired information on the amount of water to be treated, and the amount of water to be treated is lower than a predetermined reference value And when the lifting means is controlled so that the crushing means is immersed in the water to be treated, and the amount of water to be treated is higher than a predetermined reference value. Control means for controlling the lifting and lowering means so that the dust removal device is scraped up by the dust remover and the crushing means is located above the water surface of the treated water;
A foreign matter treatment apparatus comprising:

2. The foreign matter according to claim 1, wherein the dust remover is installed on the downstream side of the crushing unit in the water channel, and is capable of passing the foreign matter crushed by the crushing unit. Processing equipment.

On the downstream side of the dust remover and the crushing means, a wastewater pump that transfers the treated water treated by the dust remover or the crushing means to a sewage treatment plant, and a treatment by the dust remover or the crushing means. A rainwater pump for transferring the treated water made to the sea or river, and the control means operates the sewage pump when the amount of treated water is lower than a predetermined reference value, The contaminant treatment apparatus according to claim 1 or 2, wherein the rainwater pump is operated when the amount of water to be treated is higher than a predetermined reference value.

The impurity processing apparatus according to any one of claims 1 to 3, wherein the information on the water amount is a water level of the water channel.

The height of the upper end of the crushing means in a state where the crushing means is immersed in the water to be treated is substantially equal to the water surface position in the water channel when the amount of water that becomes the predetermined reference value flows. The contaminant processing apparatus according to any one of claims 1 to 4, wherein:

The said control means stops the said crushing means when the amount of water of the said to-be-processed water is higher than predetermined | prescribed reference value, The contaminant processing apparatus as described in any one of Claims 1-5 characterized by the above-mentioned. .

A collecting unit that is disposed in the water channel so as to cross the water channel along with the crushing unit, and that collects the foreign matter in the water to be treated, and the crushing unit that collects the foreign matter collected in the collecting unit. The transporting means for transporting to, and the lifting means further lifts and lowers the collecting means and the transporting means in accordance with the lifting movement of the crushing means. The foreign substance processing apparatus as described in any one of Claims.

The water channel is divided into a plurality of parallel small water channels, and the dust remover, the crushing means, and the elevating means are provided for each of the small water channels, and the small water channel is located upstream of the crushing means. The foreign substance processing apparatus according to any one of claims 1 to 7, wherein gates capable of controlling inflow and blocking of the water to be treated into the small water channel are provided.

Crushing means for crushing impurities in the water to be treated flowing through the water channel, elevating means for raising and lowering the crushing means up and down, and collecting the impurities in the water to be treated installed in the water channel and scraping them up on the water surface In a contaminant treatment method for treating contaminants in the for-treatment water flowing through the water channel using a contaminant treatment device comprising a dust remover,
A water amount obtaining step for obtaining information on the amount of water to be treated; and
When determining whether the amount of water to be treated is higher or lower than a predetermined reference value based on the acquired information on the amount of water to be treated, and when the amount of water to be treated is lower than a predetermined reference value Stop the scraping of dust by the dust remover and immerse the crushing means in the water to be treated by the lifting and lowering means, and when the amount of water in the water channel is higher than a predetermined reference value, the dust by the dust remover A control step of lifting up the crushing means above the water surface of the water to be treated by the lifting and lowering means,
A method for treating contaminants, comprising: