JPH0615079B2 - Sewage treatment equipment - Google Patents
Sewage treatment equipmentInfo
- Publication number
- JPH0615079B2 JPH0615079B2 JP19526686A JP19526686A JPH0615079B2 JP H0615079 B2 JPH0615079 B2 JP H0615079B2 JP 19526686 A JP19526686 A JP 19526686A JP 19526686 A JP19526686 A JP 19526686A JP H0615079 B2 JPH0615079 B2 JP H0615079B2
- Authority
- JP
- Japan
- Prior art keywords
- aeration
- partition wall
- circulation
- sludge
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010865 sewage Substances 0.000 title claims description 31
- 238000005273 aeration Methods 0.000 claims description 80
- 239000010802 sludge Substances 0.000 claims description 69
- 238000005192 partition Methods 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000001556 precipitation Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 5
- 238000000638 solvent extraction Methods 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims 1
- 238000004062 sedimentation Methods 0.000 description 22
- 239000007788 liquid Substances 0.000 description 8
- 239000006228 supernatant Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 3
- 238000005276 aerator Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Activated Sludge Processes (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、有機性汚濁質を含む都市下水、産業廃水又は
それに類する有機性汚水を処理する装置に関するもので
ある。TECHNICAL FIELD The present invention relates to an apparatus for treating municipal sewage containing organic pollutants, industrial wastewater or similar organic sewage.
第５図に基づいて従来技術に説明する。第５図は沈殿部
の下部と曝気部が連通し、沈殿部がスラッジブランケッ
トゾーンを形成するように構成された従来の曝気部と沈
殿部を一体化した汚水処理装置の一例である。この例で
は汚水は汚水流入管１から曝気部２に流入し、曝気装置
３から導入された空気の撹拌作用により汚泥と混合さ
れ、流入水の汚濁有機物は好気的に分解される。そして
汚水と汚泥の混合液は曝気部２と沈殿部４の連通部５を
通り、沈殿部４に導かれ、処理上澄液と汚泥とに分離さ
れた後、汚泥は曝気部２にポンプ又はエアリフトなどの
返送手段１３により戻される。該沈殿部４は曝気部２か
ら混合液が流入する部分において狭く、上方に向かうに
従がい拡がっているため、汚泥はスラッジブランケット
ゾーンを形成する。汚水がこのブランケットゾーンを通
過するときに汚泥水中に含まれている微細なフロックも
完全にブランケットゾーンに捕足されるため、この方式
では極めて清澄な処理水を得ることができる。又、曝気
部と沈殿部が一体化しているため、装置がコンパクトで
あるという特徴も備えている。しかしながら本方式には
次のような問題点がある。A conventional technique will be described with reference to FIG. FIG. 5 shows an example of a conventional wastewater treatment apparatus in which the lower part of the settling section communicates with the aeration section and the settling section forms a sludge blanket zone. In this example, sewage flows into the aeration unit 2 from the sewage inflow pipe 1, is mixed with sludge by the stirring action of the air introduced from the aeration device 3, and the polluted organic matter of the inflow water is aerobically decomposed. Then, the mixed liquid of sewage and sludge passes through the communication part 5 between the aeration part 2 and the precipitation part 4, is guided to the precipitation part 4, and is separated into processing supernatant and sludge, and then the sludge is pumped to the aeration part 2 or It is returned by the return means 13 such as an air lift. Since the settling section 4 is narrow in the portion where the mixed liquid flows from the aeration section 2 and spreads upward, the sludge forms a sludge blanket zone. When the wastewater passes through this blanket zone, even the fine flocs contained in the sludge water are completely trapped in the blanket zone, so that an extremely clear treated water can be obtained by this method. Further, since the aeration unit and the precipitation unit are integrated, the device is compact. However, this method has the following problems.
(1) スラッジブランケットを形成させるための十分な
条件が把握されていないため、運転条件によっては、ス
ラッジブランケットが全く形成されなかったり、また逆
に、汚泥の大部分が沈殿部に溜り、曝気部の汚泥が減少
するため、処理が不安定となることがあげられる。(1) Since sufficient conditions for forming a sludge blanket are not known, depending on the operating conditions, the sludge blanket may not be formed at all, or conversely, most of the sludge may accumulate in the settling part and the aeration part. The sludge is reduced and the treatment becomes unstable.
(2) 又、沈殿部の汚泥をサイフォンあるいはポンプで
曝気部に返送する際に水みちができ部分的な流れに添っ
た部分の汚泥しか返送されないため、沈殿部の汚泥の流
動が不十分となり、沈殿部に腐敗汚泥が浮上する。(2) In addition, when the sludge in the settling section is returned to the aeration section with a siphon or pump, only the sludge along the partial flow will be returned, and the sludge flow in the settling section will be insufficient. , Rotting sludge floats in the sedimentation area.
本発明は、従来技術における上記問題点、特に十分なス
ラッジブランケットゾーンの形成と、沈殿部汚泥の適切
な流動と曝気部への返送を簡易にかつ円滑に行なわせる
ようにした有機性汚水の処理装置を提供することを目的
としたものである。The present invention provides the above-mentioned problems in the prior art, particularly the treatment of organic sewage so that the formation of a sufficient sludge blanket zone, the proper flow of sludge in the settling section, and the return to the aeration section can be performed easily and smoothly. The purpose is to provide a device.
本発明は、反応槽内に、反応槽の上部から傾斜をもたせ
た仕切り壁６と、該仕切り壁６とほぼ平行に仕切り壁７
を設け、前記仕切り壁６の上部に沈殿部４、前記仕切り
壁７の下部に曝気部２、仕切り壁６と７で仕切られる間
に循環部２″、２′を形成せしめ、前記循環部２″の上
部と曝気部２上部とを連通せしめると共に、循環部２′
と沈殿部４の下部および曝気部２の下部とを連通せし
め、曝気部２内に曝気装置を設けるとともに、該曝気装
置を間欠曝気で運転する制御装置１２を設け、間欠的に
運転すると共に、前記反応槽底部付近に汚水流入口８を
開口させ、かつ沈殿物４と循環部２′が通過する開口部
５の最小水面積負荷が、循環部２′内の汚泥沈降速度よ
りも大きい水面積負荷になるように設定すると共に、沈
殿部４上部の水面積負荷を前記汚泥沈降速度より小さく
なるように設定し、スラッジブランケット槽を形成する
ように構成したことを特徴とする汚水処理装置である。According to the present invention, a partition wall 6 is provided in the reaction tank with an inclination from the upper part of the reaction tank, and a partition wall 7 is provided substantially parallel to the partition wall 6.
The partition wall 6 is provided with a settling section 4, an aeration section 2 below the partition wall 7, and circulation sections 2 ″ and 2 ′ formed between the partition walls 6 and 7. The upper part of the ″ and the upper part of the aeration part 2 are communicated with each other, and the circulation part 2 ′
And the lower part of the precipitation part 4 and the lower part of the aeration part 2 are communicated with each other, and an aeration device is provided in the aeration part 2, and a control device 12 for operating the aeration device by intermittent aeration is provided to operate intermittently. A waste water inlet 8 is opened near the bottom of the reaction tank, and the minimum water area load of the opening 5 through which the sediment 4 and the circulation section 2'pass is larger than the sludge sedimentation speed in the circulation section 2 '. The sludge treatment apparatus is characterized in that the sludge blanket tank is formed by setting the water area load on the upper part of the settling unit 4 to be smaller than the sludge settling velocity while setting the load. .
本発明を図面に基づいて詳しく説明する。第１図は本発
明の装置の基本構成を示したものであり、第２図は沈殿
部にレーキを設け、かつ汚水の流入口を側壁下部から曝
気装置に向けて横向きに流れるようにしたもの、第３図
は曝気部内仕切り壁の上部を可動堰１１とし、かつ仕切
壁下部連通部内側に曝気装置としてジェットエアレーシ
ョン装置を設けたもの、第４図は装置を対象形とし、か
つ中央に曝気装置として上吹き出しの水中アレーターを
設けるとともに、曝気およびレーキの稼働を予め設定し
たプログラムに従い、稼働するようにコントロール装置
を設けたものである。The present invention will be described in detail with reference to the drawings. FIG. 1 shows the basic constitution of the device of the present invention, and FIG. 2 shows that a rake is provided in the settling part and that the inflow port of the sewage flows laterally from the lower side wall toward the aeration device. Fig. 3 shows a structure in which the upper part of the partition wall inside the aeration part is a movable weir 11, and a jet aeration device is provided as an aeration device inside the communication part of the lower part of the partition wall. Fig. 4 shows the device as the object type and aeration at the center. As the device, an underwater aerator that blows upward is provided, and a control device is provided so that the aeration and the rake can be operated according to a preset program.
本発明の基本構成は第１図に示すように反応槽１５の上
部を仕切り板６′で仕切り、そこから傾斜をもたせ仕切
り壁６を少なくとも循環部２′の底部より１ｍ以上の高
さ迄、好ましくは２ｍ〜３ｍの高さまで延長し、仕切り
壁６で仕切りれた上部を沈殿部４とし、仕切り壁６とほ
ぼ平行な仕切り壁７を設け、仕切り壁７の下部を曝気部
２とし、仕切り壁６と仕切り７で仕切られる間に循環部
２″、２′を形成せしめ、かつ沈殿部４の下部と循環部
２′の間に開口部５を設けるとともに、沈殿部と連通す
る循環部２′と反対側の曝気部２内に、曝気装置３を設
けている。この装置において、汚水は汚水流入管１から
曝気部２の底部に上向きにまたは第２図に示すように沈
殿部４と循環部２′が連通する空間の側壁下部より底部
に沿って曝気装置３の方向に横向きに流れるように汚水
流入口８を設けている。As shown in FIG. 1, the basic construction of the present invention is such that the upper part of the reaction tank 15 is partitioned by a partition plate 6 ', and the partition wall 6 is inclined from the partition plate 6'to a height of at least 1 m from the bottom of the circulation part 2', Preferably, the partition wall 6 is extended to a height of 2 to 3 m, the upper part partitioned by the partition wall 6 serves as the settling part 4, the partition wall 7 substantially parallel to the partition wall 6 is provided, and the lower part of the partition wall 7 serves as the aeration part 2, The circulation part 2 ″, 2 ′ is formed between the wall 6 and the partition 7, the opening 5 is provided between the lower part of the sedimentation part 4 and the circulation part 2 ′, and the circulation part 2 communicating with the sedimentation part 2 is formed. The aeration device 3 is provided in the aeration unit 2 on the opposite side to the ‘′. In this device, the sewage flows upward from the sewage inflow pipe 1 to the bottom of the aeration unit 2 or as shown in FIG. Aeration device along the bottom from the lower part of the side wall of the space where the circulation part 2'communicates. The sewage inlet 8 is provided so as to flow in the direction sideways.
このように構成することにより、曝気停止時においても
連続的に流入する汚水を、沈積した汚泥ゾーンを通過さ
せることにより、嫌気的条件での脱窒およびあるいは生
物学的脱リン反応により、汚水中に含まれる有機物が分
解されるとともに、微細なＳＳも捕足することが可能と
なる。By configuring in this way, sewage that continuously flows in even when aeration is stopped passes through the sludge zone where it has accumulated, so that sewage can be denitrified and / or biologically dephosphorized under anaerobic conditions. It is possible to decompose the organic matter contained in and capture fine SS.
曝気部２に流入した汚水は、曝気部２内に設けられた曝
気装置３により、好気的処理が行なわれ、有機物が分解
されるが、汚水と汚泥の混合液の流れは、曝気部２から
仕切り壁７の上部を通って、循環部２″に入り、沈殿部
４と循環部２″を仕切る仕切り壁６に沿って流下し、沈
殿部下部の循環部２′に入る。この流れの大部分は、仕
切り壁７の下部の連通部を通り、再び曝気部２に循環さ
れるが、流入する汚水に相当する量が、沈殿部４と循環
部２′の開口部５を通り、沈殿部４に流入し、ここで汚
泥と処理水に分離されて、処理上澄水は、沈殿部４上部
に設けられた越流口９より処理水として放流される。こ
こで沈殿下部にスラッジブランケットゾーンを形成させ
ることにより、汚水と汚泥の混合液は、開口部５を通し
て沈殿部４上部に流出する際に、清澄ろ過作用を受け、
清澄な処理水を得ることになるが、安定したスラッジブ
ランケットゾーンを形成させるためには、沈殿部開口部
５における水面積負荷を曝気部混合液（循環部混合液）
の汚泥沈降速度よりも大きくとり、また沈殿部上面の水
面積負荷を該汚泥の沈降速度よりも小さくとる必要があ
る。一般的には汚泥の沈降速度は30〜４０ｍ／日の範囲
（ＭＬＳＳ10000〜3000mg／）にあることから、開口
部５の断面まにおける水面積負荷を流入汚水量に対し４
０ｍ３／ｍ２・日以上、好ましくは６０ｍ３／ｍ２・日
以上となるように設定し、かつ沈殿部４上部の水面積負
荷を３０ｍ３／ｍ２・日以下、好ましくは２０ｍ３／ｍ
２・日以下とすることで安定したスラッジブランケット
ゾーンを形成させることができる。実際には、汚泥の沈
降分離特性は、流入水質、水温、負荷条件等により、変
化するが、装置の製作においてはその汚泥性状を考慮
し、汚泥の沈降分離が十分行なわれる値に沈殿部上部の
水面積負荷を決めるとともに、沈殿部下部の開口部５の
面積を沈降部表面面積の１／３以下にすることで、安定
したスラッジブランケットゾーンの形成は達成される。The sewage flowing into the aeration unit 2 is aerobically treated by the aeration device 3 provided in the aeration unit 2 to decompose organic matter, but the flow of the mixed liquid of sewage and sludge is Through the upper part of the partition wall 7 into the circulation part 2 ″, flows down along the partition wall 6 partitioning the precipitation part 4 and the circulation part 2 ″, and enters the circulation part 2 ′ below the precipitation part. Most of this flow passes through the communication section at the bottom of the partition wall 7 and is circulated again to the aeration section 2. However, an amount equivalent to the inflowing sewage flows through the sedimentation section 4 and the opening 5 of the circulation section 2 '. As described above, it flows into the settling section 4, where it is separated into sludge and treated water, and the treated clear water is discharged as treated water from the overflow port 9 provided at the upper part of the settling section 4. Here, by forming a sludge blanket zone in the lower part of the sedimentation, when the mixed liquid of sewage and sludge flows through the opening 5 to the upper part of the sedimentation part 4, it receives a clarification filtration action,
Although clear treated water is obtained, in order to form a stable sludge blanket zone, the water area load in the settling section opening 5 is set to the aeration section mixed solution (circulating section mixed solution).
It is necessary to set the sludge settling speed higher than the sludge settling speed and the water area load on the upper surface of the settling section smaller than the sludge settling speed. Generally, the settling velocity of sludge is in the range of 30 to 40 m / day (MLSS10000 to 3000 mg /), so the water area load up to the cross section of the opening 5 is 4 with respect to the amount of inflowing wastewater.
It is set to be 0 m 3 / m 2 · day or more, preferably 60 m 3 / m 2 · day or more, and the water area load on the upper part of the settling unit 4 is 30 m 3 / m 2 · day or less, preferably 20 m 3 / day. m
A stable sludge blanket zone can be formed by setting the time to 2 days or less. Actually, the sedimentation and separation characteristics of sludge vary depending on the inflow water quality, water temperature, load conditions, etc., but in the production of the equipment, the sludge properties should be taken into consideration and set to a value at which the sedimentation and separation of sludge is sufficiently performed. Stable sludge blanket zone formation is achieved by determining the water area load of the above and setting the area of the opening 5 at the lower part of the sedimentation part to 1/3 or less of the surface area of the sedimentation part.
一方、沈殿部４に形成されたスラッジブランケットゾー
ンは、汚泥がそのまま滞留するならば、やがては腐敗し
汚泥が浮上するとともに、処理水が悪化することにな
る。これを避けるためには、スラッジブランケットを形
成した汚泥は、断えず、循環部２′に戻り、循環せねば
ならない。一般的には、沈殿汚泥全体を滞ることなく一
様に入れかえるのは従来技術では困難であったが、本発
明では、間欠曝気法を用い、沈殿部４に蓄積した汚泥と
循環部２′の汚泥の密度差により、あるいは沈殿部下部
に生じる偏流した流れにより、沈殿部汚泥は循環部２′
を径て曝気部２に戻される。本発明では、第２図に示す
ごとく、沈殿部４に、沈殿部４と循環部２′の開口部５
に汚泥をかき寄せるレーキ10を設けることにより、沈殿
部４下部に退席した汚泥を一様に開口部５にかき寄せ、
曝気部２に循環させることができる。また、レーキを用
いない場合には、第１図に示すごとく、循環部２″と沈
殿部４を仕切る仕切り壁６の傾斜角を２０〜８０゜好ま
しくは４５〜７０゜にすることにより汚泥を一様に入れ
変えることができる。On the other hand, if the sludge remains in the sludge blanket zone formed in the settling section 4, the sludge will eventually decompose and the sludge will float up, and the treated water will deteriorate. In order to avoid this, the sludge forming the sludge blanket must be returned to the circulation section 2'and circulated without interruption. Generally, it was difficult in the prior art to replace the whole settling sludge uniformly without delay, but in the present invention, the sludge accumulated in the settling unit 4 and the circulation unit 2'are used by the intermittent aeration method. The sludge in the sedimentation section is circulated in the circulation section 2'because of the sludge density difference or the uneven flow generated in the lower section of the sedimentation section.
Is returned to the aeration unit 2. In the present invention, as shown in FIG. 2, the settling section 4 and the opening 5 of the circulating section 2'are provided in the settling section 4.
By providing a rake 10 for attracting sludge to the sludge, the sludge left in the lower part of the sedimentation part 4 is uniformly attracted to the opening part 5,
It can be circulated to the aeration unit 2. When the rake is not used, as shown in FIG. 1, the slant angle of the partition wall 6 for partitioning the circulation section 2 ″ and the sedimentation section 4 is set to 20 to 80 °, preferably 45 to 70 ° to remove sludge. Can be replaced uniformly.
更に間欠曝気法を用いることにより、曝気停止時に曝気
部２および循環部２″の汚泥は沈降し、上部には上澄液
が形成され、停止時間が長くなると曝気部内の汚泥界面
は更に低下し、循環部２″の上澄液は沈殿部下部開口部
５の下までくる。この時、上澄液と沈殿物汚泥との密度
差が大きくなり沈殿部汚泥は急速に循環部２′に沈降す
ることになる。また循環部２″の上澄液が沈降部下部開
口部５の下まで達しなくても次のサイクルの曝気が始ま
ると、その曝気によって循環部２″の汚泥は開口部５下
部の循環部２′を通り曝気部２へと吸い込まれる。この
ため曝気部２および循環部２″の上澄液も開口部５の下
に導かれ、その際沈殿部汚泥との密度差により沈殿部汚
泥は循環部２′に沈降する。また、曝気部２の底部付近
への汚水流入により曝気停止時においても沈降してくる
汚泥との接触が効果的に行われる。Further, by using the intermittent aeration method, the sludge in the aeration section 2 and the circulation section 2 ″ settles down when aeration is stopped, and a supernatant liquid is formed in the upper part, and the sludge interface in the aeration section further decreases when the stop time becomes long. The supernatant of the circulation part 2 ″ reaches below the opening 5 in the lower part of the precipitation part. At this time, the density difference between the supernatant liquid and the sludge of the sediment becomes large, and the sludge of the sedimentation portion rapidly settles in the circulation portion 2 '. Even if the supernatant of the circulation part 2 ″ does not reach below the lower opening 5 of the sedimentation part, when the aeration of the next cycle starts, the sludge causes the sludge of the circulation part 2 ″ to circulate in the lower part of the opening 5 by the aeration. It is sucked into the aeration unit 2 through the '. For this reason, the supernatant liquid of the aeration unit 2 and the circulation unit 2 ″ is also guided under the opening 5, and at this time, the sedimentation sludge settles in the circulation unit 2 ′ due to the density difference with the sedimentation unit sludge. Due to the inflow of sewage into the vicinity of the bottom of No. 2, contact with the sludge that settles is effectively performed even when the aeration is stopped.
このように、間欠曝気と曝気部２の底部付近への汚水の
流入により沈殿部の汚泥は常に曝気部内にとり込まれる
ため、沈殿部の汚泥が停滞して腐敗することなく常に曝
気部内の新鮮な汚泥と入れかえることかでき、汚水中の
有機物除去効果が高く、かつ、良好な処理水を安定して
得ることができる。In this way, the sludge in the sedimentation part is always taken into the aeration part due to the intermittent aeration and the inflow of the sewage into the vicinity of the bottom of the aeration part 2. Therefore, the sludge in the sedimentation part does not stagnant and decay, and the sludge in the aeration part is always fresh. It can be replaced with sludge, has a high effect of removing organic substances in wastewater, and can provide stable treated water.
また曝気時には沈殿部に新たな有泥界面がすみやかに形
成されて安定したスラッジブランケット層が形成されて
いる。この現象を効率的に利用するためにも開口部５の
高さは、曝気部底部より１ｍ以上、好ましくは２〜３ｍ
以上とる必要がある。In addition, during aeration, a new mud interface was promptly formed in the sedimentation area to form a stable sludge blanket layer. In order to efficiently utilize this phenomenon, the height of the opening 5 is 1 m or more, preferably 2 to 3 m from the bottom of the aeration part.
It is necessary to take more.
曝気部内の仕切り壁７は、第１〜第４図に示すごとく、
沈殿部仕切り壁６と同じ勾配を与える必要はなく、曝気
部内の循環が滑らかに行なわれ、かつ曝気装置３で生じ
た気泡が開口部５から沈殿部４に漏出しないような形状
にすることが必要である。The partition wall 7 in the aeration section is, as shown in FIGS.
It is not necessary to provide the same gradient as that of the settling section partition wall 6, and it is possible to make the circulation in the aeration section smooth and to make the bubbles generated in the aeration unit 3 not leak from the opening 5 to the settling section 4. is necessary.
こうした空気の巻込みを制限するためには、第３図に示
すように仕切り壁７上部の開口部に摺動可能なゲート１
１を設け、循環部２″への液の循環量を制御することで
可能となる。また仕切壁７の位置は、曝気による循環が
滑らかに行なわれるのであれば、特に限定されることは
ないが、循環部２″および２′の空間を余り大きくとる
と、該内部の流れに乱れが生じることから、実験的に
は、仕切り壁７下部の位置は、曝気装置３が設けられる
曝気部２の水平方向長さを１とすると、循環部２′の水
平方向流さを１／２以下にすれば流れは滑らかになる結
果が得られる。In order to limit such entrainment of air, as shown in FIG. 3, the gate 1 slidable in the opening above the partition wall 7 is provided.
This is possible by providing 1 and controlling the circulation amount of the liquid to the circulation portion 2 ″. Further, the position of the partition wall 7 is not particularly limited as long as the circulation by aeration is smoothly performed. However, if the spaces of the circulation parts 2 ″ and 2 ′ are made too large, turbulence occurs in the internal flow. Therefore, experimentally, the position of the lower part of the partition wall 7 is the aeration part 2 where the aeration device 3 is provided. Assuming that the horizontal length of 1 is 1, the flow becomes smooth if the horizontal flow of the circulating portion 2'is set to 1/2 or less.
曝気装置３は、特に限定される必要はないが、間欠曝気
を用いるため、水中エアレーター、ジェットエアレーシ
ョンあるいはノンクロッグデューザーのように閉塞しな
い曝気装置を用いることが必要となる。また、曝気装置
３の位置は、沈殿部開口部５と反対側であれば、特に限
定する必要はなく、第３図に示すごとく、仕切り壁７下
部の開口部の傍に、ジェットエアレーションを設置する
ことも可能である。The aeration device 3 is not particularly limited, but since intermittent aeration is used, it is necessary to use an aeration device that does not close, such as a submersible aerator, jet aeration, or a non-clog duzer. The position of the aeration device 3 is not particularly limited as long as it is on the opposite side of the settling part opening 5, and as shown in FIG. 3, jet aeration is installed near the opening under the partition wall 7. It is also possible to do so.
本発明の反応槽は、第１〜第３図に示すものを基本形と
するが、第４図に示すごとく、左右対象の矩形槽または
円形槽も可能である。The reaction tank of the present invention is basically the reaction tank shown in FIGS. 1 to 3, but as shown in FIG.
また、間欠曝気を行うため、曝気の作動／停止を予め設
定したプログラムに従って作動するように制御装置１２
を設けている沈殿部レーキの稼働をも制御することがで
きる。Further, in order to perform the intermittent aeration, the control device 12 is operated so that the activation / stop of the aeration is operated according to a preset program.
It is also possible to control the operation of the settling rake provided with.
第１図、第２図、第３図及び第４図は夫々異なる本発明
の汚水処理装置を説明するための図、第５図は従来の汚
水処理装置を説明するための図面である。 １……汚水流入管、２……曝気部、２′、２″……循環
部、３……曝気装置、４……沈殿部、５……沈殿部下部
開口部、６……仕切り壁、７……仕切り壁、８……汚水
流入口、１０……レーキ、１１……可動ゲート、１５…
…反応槽1, FIG. 2, FIG. 3 and FIG. 4 are drawings for explaining different sewage treatment apparatuses of the present invention, and FIG. 5 is a drawing for explaining a conventional sewage treatment apparatus. 1 ... sewage inflow pipe, 2 ... aeration part, 2 ', 2 "... circulation part, 3 ... aeration device, 4 ... precipitation part, 5 ... precipitation part lower opening, 6 ... partition wall, 7 ... partition wall, 8 ... sewage inlet, 10 ... rake, 11 ... movable gate, 15 ...
… Reactor
フロントページの続き (56)参考文献 特開 昭61−15793（ＪＰ，Ａ) 実公 昭48−31245（ＪＰ，Ｙ１) 実願昭51−174207号（実願昭53−89762 号）の願書に添付した明細書及び図面の内 容を撮影したマイクロフィルム（ＪＰ, Ｕ）実願昭49−14865号（実願昭50− 106057号）の願書に添付した明細書及び図 面の内容を撮影したマイクロフィルム（Ｊ Ｐ，Ｕ)Continuation of the front page (56) Reference Japanese Patent Application Laid-Open No. 61-15793 (JP, A) Japanese Utility Model Sho 48-31245 (JP, Y1) Japanese Patent Application No. 51-174207 (Japanese Application No. 53-89762) The contents of the specification and drawings attached to the application of Microfilm (JP, U) Japanese Patent Application No. 49-14865 (Japanese Patent Application No. 50-106057) were photographed. Micro film (JP, U)
Claims (7)
せた仕切り壁（６）と、該仕切り壁（６）とほぼ平行に
仕切り壁（７）を設け、前記仕切り壁（６）の上部に沈
殿部（４）、前記仕切り壁（７）の下部に曝気部
（２）、仕切り壁（６）と（７）で仕切られる間に循環
部（２″）、（２′）を形成せしめ、前記循環部
（２″）の上部と曝気部（２）の上部とを連通せしめる
と共に、循環部（２′）と沈殿部（４）の下部および曝
気部（２）の下部とを連通せしめ、曝気部（２）内に曝
気装置を設けるとともに、該曝気装置を間欠曝気で運転
する制御装置(12)を設け、間欠的に運転すると共に、前
記反応槽底部付近に汚水流入口（８）を開口させ、かつ
沈殿物（４）と循環部（２′）が通過する開口部（５）
の最小水面積負荷が、循環部（２′）内の汚泥沈降速度
よりも大きい水面積負荷になるように設定すると共に、
沈殿部（４）上部の水面積負荷を前記汚泥沈降速度より
小さくなるように設定し、スラッジブランケット槽を形
成するように構成したことを特徴とする汚水処理装置。1. A partition wall (6) inclined from the upper part of the reaction tank and a partition wall (7) substantially parallel to the partition wall (6) are provided in the reaction tank, and the partition wall (6) is provided. A settling section (4) above the partition wall (7), an aeration section (2) below the partition wall (7), and circulation sections (2 ″) and (2 ′) between the partition walls (6) and (7). The upper part of the circulation part (2 ″) and the upper part of the aeration part (2) are communicated with each other, and the circulation part (2 ′) and the lower part of the precipitation part (4) and the lower part of the aeration part (2) are formed. In addition to providing communication, an aeration device is provided in the aeration section (2), and a control device (12) for operating the aeration device by intermittent aeration is provided to operate intermittently, and a wastewater inlet (near the bottom of the reaction tank). An opening (5) which opens 8) and through which the precipitate (4) and the circulation part (2 ') pass.
The minimum water area load of is set so as to be larger than the sludge settling speed in the circulation part (2 '), and
A sewage treatment apparatus configured to form a sludge blanket tank by setting a water area load above the settling section (4) to be smaller than the sludge settling speed.
切り壁（６）の下部が、反応槽底面より少なくとも１ｍ
以上の高さに位置するとともに、沈殿部と循環部
（２′）が連通する開口部（５）の面積と、沈殿部表面
の面積の比が少なくとも１：３以上であることを特徴と
する特許請求の範囲第１項記載の汚水処理装置。2. The lower part of the partition wall (6) for partitioning the precipitation part (4) and the circulation part (2 ″) is at least 1 m from the bottom of the reaction tank.
It is characterized in that the ratio of the area of the opening part (5) communicating with the precipitation part and the circulation part (2 ′) to the surface area of the precipitation part is at least 1: 3 or more while being located at the above height. The sewage treatment apparatus according to claim 1.
の傾斜角を２０〜８０゜の範囲内とすることを特徴とす
る特許請求の範囲第１項又は第２項記載の汚水処理装
置。3. The sewage according to claim 1 or 2, wherein the partition wall for partitioning the settling section and the circulation section (2 ″) has an inclination angle within a range of 20 to 80 °. Processing equipment.
ことを特徴とする特許請求の範囲第１項、第２項又は第
３項記載の汚水処理装置。4. The sewage treatment apparatus according to claim 1, 2, or 3, wherein a rake for attracting sludge is provided in the settling section.
（２′）の側壁下部より横向きに、曝気装置のある方向
に流すように配管するかまたはガイドを設けたことを特
徴とする特許請求の範囲第１項乃至第４項の何れか１つ
に記載の汚水処理装置。5. A pipe or a guide is provided so that the inflow of sewage flows laterally from the lower part of the side wall of the circulation part (2 ') communicating with the settling part in the direction of the aeration device. The sewage treatment apparatus according to any one of claims 1 to 4.
（７）の下部が、曝気装置のある空間とその反対側の空
間の、各々の側壁と該仕切り壁下部の隔りの比が２：１
以上の位置にあることを特徴とする特許請求の範囲第１
項乃至第５項の何れか１つに記載の汚水処理装置。6. The lower part of the partition wall (7) for partitioning the aeration part and the circulation part (2 ″) is a space between the side wall and the lower part of the partition wall in the space with the aeration device and the space on the opposite side. Ratio is 2: 1
Claim 1 which is in the above position
Item 6. The sewage treatment apparatus according to any one of items 5 to 5.
開口比を任意に変えられるように曝気部内仕切り壁
（７）上部にゲートを設けたことを特徴とする特許請求
の範囲第１項乃至第６項の何れか１つに記載の汚水処理
装置。7. A gate is provided on the upper part of the partition wall (7) in the aeration part so that the opening ratio of the communication part of the upper part of the partition wall (7) in the aeration part can be arbitrarily changed. Item 6. The sewage treatment apparatus according to any one of items 6 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19526686A JPH0615079B2 (en) | 1986-08-22 | 1986-08-22 | Sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19526686A JPH0615079B2 (en) | 1986-08-22 | 1986-08-22 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6351994A JPS6351994A (en) | 1988-03-05 |
| JPH0615079B2 true JPH0615079B2 (en) | 1994-03-02 |
Family
ID=16338290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19526686A Expired - Fee Related JPH0615079B2 (en) | 1986-08-22 | 1986-08-22 | Sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615079B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107601656A (en) * | 2017-10-13 | 2018-01-19 | 衡阳师范学院 | A kind of device of granulated pellet sludge rapidly cultivating aerobic particle sludge Secondary Flow air lift fluid bed |
| JP2020044471A (en) * | 2018-09-14 | 2020-03-26 | 王子ホールディングス株式会社 | Water treatment device and water treatment method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077186A (en) * | 1983-09-30 | 1985-05-01 | 株式会社東芝 | Ceramic sintered body with metallized surface |
| CN101885539B (en) * | 2009-05-15 | 2012-06-20 | 江西金达莱环保研发中心有限公司 | Facultative aerobic membrane bioreactor process |
| CN105236552B (en) * | 2015-10-30 | 2017-08-15 | 浦华环保股份有限公司 | A kind of activated sludge gravity is from flowing back integrated sewage treatment device |
| CN110104209B (en) * | 2019-05-09 | 2023-04-14 | 中国飞机强度研究所 | Water-gas separation system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50106057U (en) * | 1974-02-04 | 1975-09-01 | ||
| JPS5389762U (en) * | 1976-12-24 | 1978-07-22 | ||
| JPS6115793A (en) * | 1984-06-29 | 1986-01-23 | Ebara Infilco Co Ltd | Treatment of organic waste water |
-
1986
- 1986-08-22 JP JP19526686A patent/JPH0615079B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107601656A (en) * | 2017-10-13 | 2018-01-19 | 衡阳师范学院 | A kind of device of granulated pellet sludge rapidly cultivating aerobic particle sludge Secondary Flow air lift fluid bed |
| JP2020044471A (en) * | 2018-09-14 | 2020-03-26 | 王子ホールディングス株式会社 | Water treatment device and water treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6351994A (en) | 1988-03-05 |
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