JPH082405B2 - Gas-liquid reflux type defoaming device - Google Patents
Gas-liquid reflux type defoaming deviceInfo
- Publication number
- JPH082405B2 JPH082405B2 JP1187005A JP18700589A JPH082405B2 JP H082405 B2 JPH082405 B2 JP H082405B2 JP 1187005 A JP1187005 A JP 1187005A JP 18700589 A JP18700589 A JP 18700589A JP H082405 B2 JPH082405 B2 JP H082405B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- liquid
- pipe
- water
- delivery pipe
- 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
Landscapes
- Degasification And Air Bubble Elimination (AREA)
- Removal Of Floating Material (AREA)
Description
【発明の詳細な説明】 《産業上の利用分野》 本発明は汚水処理槽の消泡装置に関し、特に気液を還
流せしめてその場で消泡することができる気液還流型消
泡装置に関する。Description: TECHNICAL FIELD The present invention relates to a defoaming device for a sewage treatment tank, and more particularly to a gas-liquid recirculation type defoaming device capable of refluxing gas-liquid and defoaming on the spot. .
《従来の技術》 従来、汚水処理施設における汚水処理槽等の水面に浮
遊する泡は、汚水処理槽等の水面付近に開口せしめた気
液吸込管により吸引し、他の処理施設に配送させた上で
処理を行っていた。<< Conventional technology >> Conventionally, bubbles floating on the water surface of a sewage treatment tank in a sewage treatment facility were sucked by a gas-liquid suction pipe opened near the water surface of the sewage treatment tank and delivered to another treatment facility. Was being processed above.
しかしながら、用地の狭いところでは、このような大
規模な施設を建設することは不可能である上、施設の建
設費用は莫大なものとなるという欠点があった。However, it is impossible to construct such a large-scale facility in a narrow site, and the construction cost of the facility is enormous.
他方、汚水処理槽の水面上に散水装置を配してそこか
ら水面に散水を行うことにより泡を消泡する方式があ
る。On the other hand, there is a method of defoaming bubbles by disposing a sprinkler on the water surface of a sewage treatment tank and then sprinkling water on the water surface.
しかしながら、この方式では、気泡の大きな泡に対し
ては効果があるが、気泡の小さな泡に対しては効果が少
なく、完全に消泡を行うことは困難であるという欠点が
あった。かかる欠点は消泡剤を使用することにより緩和
されるが、消泡剤自体の処理が必要となるため大量に使
用することができず自ずから消泡効果には限界があっ
た。However, this method is effective for bubbles with large bubbles, but is less effective for bubbles with small bubbles, and has a drawback that it is difficult to completely eliminate the bubbles. Although such a defect can be alleviated by using an antifoaming agent, it is necessary to treat the antifoaming agent itself, so that it cannot be used in a large amount and the defoaming effect is naturally limited.
《発明が解決しようとする課題》 そこで、本発明者等は上記の欠点を解決すべく鋭意検
討を重ねた結果、泡と共に吸収した処理水を散水装置に
気液分離器を介して還流せしめることにより消泡剤や他
の施設を必要とすることなく汚水処理槽内の水面に浮遊
する泡の消泡をその場で容易に行なうことができること
を見出し、本発明に到達した。<< Problems to be Solved by the Invention >> Therefore, as a result of intensive studies conducted by the present inventors to solve the above-mentioned drawbacks, the treated water absorbed together with the bubbles is returned to the sprinkler through a gas-liquid separator. According to the above, the inventors have found that the defoaming of bubbles floating on the water surface in the wastewater treatment tank can be easily performed on the spot without the need for an antifoaming agent or other facilities, and have arrived at the present invention.
従って、本発明の第１の目的は汚水処理槽の水面に浮
遊する泡を同一処理槽内で消泡することができる気液還
流型消泡装置を提供することにある。Therefore, a first object of the present invention is to provide a gas-liquid reflux type defoaming device capable of defoaming the bubbles floating on the water surface of a sewage treatment tank within the same processing tank.
本発明の第２の目的は、気泡の小さな泡でも消泡剤を
使用することなく消泡することができる気液還流型消泡
装置を提供することにある。A second object of the present invention is to provide a gas-liquid reflux type defoaming device capable of defoaming even small bubbles without using an antifoaming agent.
本発明の第３の目的は、短時間で効率良く泡を消泡す
ることができる気液還流型消泡装置を提供することにあ
る。A third object of the present invention is to provide a gas-liquid reflux type defoaming device capable of efficiently defoaming bubbles in a short time.
《課題を解決するための手段》 本発明の上記の諸目的は、水面下から水面に向けて開
口せしめた気液吸込管、気液配送管、気液配送管から分
岐した空気供給管及び水面上方に配置した散水装置並び
に排気口を有する気液分離器とからなる消泡装置であっ
て、前記気液吸込管と散水装置とを、該散水装置の前に
設けた気液分離器を介して、水面下に伸びる気液配送管
によって接続すると共に、水面に浮遊する泡を処理水と
共に気液吸込管から気液配送管中に吸入し、重力による
上部からの圧力によって下部の泡を自然消滅させるとと
もに、気液配送管中の処理水を前記気液分離器側へ配送
せしめる如く、前記気液配送管に空気供給管を分岐接続
してエアリフトポンプを形成せしめたことを特徴とする
気液還流型消泡装置によって達成された。<< Means for Solving the Problems >> The above objects of the present invention are to provide a gas-liquid suction pipe, a gas-liquid delivery pipe, an air supply pipe branched from the gas-liquid delivery pipe, and a water surface which are opened from below the water surface toward the water surface. A defoaming device comprising a water sprinkler disposed above and a gas-liquid separator having an exhaust port, wherein the gas-liquid suction pipe and the water sprinkler are provided via a gas-liquid separator provided in front of the water sprinkler. And the bubbles that float on the water surface are sucked into the gas-liquid delivery pipe from the gas-liquid suction pipe together with the treated water, and the bubbles on the lower part naturally move due to the pressure from the upper part due to gravity. An air lift pump is formed by branching an air supply pipe to the gas-liquid delivery pipe so that the treated water in the gas-liquid delivery pipe is delivered to the gas-liquid separator side while being eliminated. Achieved by a liquid reflux type defoamer.
以下本発明の構成を図に従って詳述する。 The configuration of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の気液還流型消泡装置の断面図であ
り、第２図は第１図のＡ−Ａ線上で切断した断面図であ
る。FIG. 1 is a cross-sectional view of the gas-liquid reflux type defoaming device of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA of FIG.
図中、符号（１）は、曝気槽等の汚水処理槽（10）
（以下単に処理槽（10）とする）の水面付近に水面下か
ら水面に向けて開口せしめた気液吸込管である。従っ
て、開口部の位置は水面に浮遊する泡を効率良く吸引す
ることができる位置に設定することは当然である。又、
上記開口部の口径は100mm程度とすることが好ましい。In the figure, reference numeral (1) is a wastewater treatment tank (10) such as an aeration tank.
A gas-liquid suction pipe that is opened near the water surface of the treatment tank (10) below from the water surface toward the water surface. Therefore, it is natural that the position of the opening is set to a position where bubbles floating on the water surface can be efficiently sucked. or,
The diameter of the opening is preferably about 100 mm.
符号（２）は気液配送管であり、気液を気液吸込管
（１）から後記する気液分離器（３）及び散水装置
（４）へ配送するための気液還流経路を構成する。Reference numeral (2) is a gas-liquid delivery pipe, which constitutes a gas-liquid recirculation path for delivering gas-liquid from the gas-liquid suction pipe (1) to a gas-liquid separator (3) and a sprinkler (4) described later. .
符号（３）は、気液分離器であり、特に、一端を散水
装置（４）側に、他端を気液吸込管（１）から配管され
た気液配送管（２）側に接続せしめたメインパイプ
（９）と、一端がメインパイプ（９）の上方に接続され
他端が解放された排気口（８）を有する逆Ｕ字型の分岐
管（７）とからなるものが好ましい。散水装置（４）
は、公知のものの中から適宜選択して使用することがで
きる。Reference numeral (3) is a gas-liquid separator, in particular, one end of which is connected to the sprinkler device (4) side and the other end of which is connected to the gas-liquid delivery pipe (2) side connected from the gas-liquid suction pipe (1). A main pipe (9) and an inverted U-shaped branch pipe (7) having an exhaust port (8) having one end connected to the upper side of the main pipe (9) and the other end open. Sprinkler (4)
Can be appropriately selected and used from known ones.
符号（５）は、気液配送管（２）に分岐接続した空気
供給管であり、気液配送管（２）内に空気を供給するこ
とにより処理水を気液吸込管（１）から散水装置へ配送
せしめる如くエアリフトポンプを形成する。従って、気
液吸込管（１）側に空気が送られることがないように接
続することは当然である。Reference numeral (5) is an air supply pipe branched and connected to the gas-liquid delivery pipe (2), and the treated water is sprinkled from the gas-liquid suction pipe (1) by supplying air into the gas-liquid delivery pipe (2). The air lift pump is formed so that it can be delivered to the device. Therefore, it is natural that the air-liquid suction pipe (1) is connected so that air is not sent to it.
符号（６）は、気液吸込管（１）が、水位の変化に応
じて上下に摺動できるように必要に応じて気液吸込管
（１）に設けることができるフロートである。フロート
には水や砂を適宜入れることにより気液吸込管（１）の
開口部の位置を調整することができるように、着脱自在
の蓋を有する開口部を設けておく。気液配送管（２）を
できるだけ鉛直に保つと共に、泡が気液吸込管（１）に
吸入されるのを妨げないために、フロートは２個とする
ことが好ましい。又、泡がフロートに付着することを避
けるために、フロートとフロートの間隔を400mm以上と
することが好ましく、特に450mm程度とすることが好ま
しい。Reference numeral (6) is a float that can be provided on the gas-liquid suction pipe (1) as needed so that the gas-liquid suction pipe (1) can slide up and down according to the change in the water level. The float is provided with an opening having a detachable lid so that the position of the opening of the gas-liquid suction pipe (1) can be adjusted by appropriately inserting water or sand. In order to keep the gas-liquid delivery pipe (2) as vertical as possible and to prevent bubbles from being sucked into the gas-liquid suction pipe (1), it is preferable to have two floats. Further, in order to prevent the bubbles from adhering to the float, it is preferable that the distance between the floats is 400 mm or more, and particularly about 450 mm.
《作 用》 気液吸込管（１）より吸引された泡を含む気液はエア
リフトポンプの作用により気液配送管（２）を下降し、
その途中で、下方の泡は、重力に基づく上方からの圧力
を受けて押しつぶされ、消滅する。泡を含まない処理水
は、エアリフトポンプによって気液分離器（３）へ配送
される。処理水と共に配送さた、エアリフトポンプによ
って生じた新たな泡は、気液分離器（３）内で水中から
放出され、この瞬間に破泡する結果、泡中の気体が空気
と共に気液分離器（３）の上方に開口する分岐管（７）
を通って排気口（８）から排気される。気液分離器
（３）のメインパイプ（９）を通過した泡を含まない液
体は散水装置（４）へ配送され汚水処理槽（10）の水面
に散水される。この散水は、汚水処理槽内の大きな泡を
消滅せしめると共に、泡を気液吸込管（１）の方に集
め、吸い込まれ易くする作用を有する。従って散水装置
（４）の位置は、泡が汚水処理槽（10）の周辺に溜まら
ないように設置することが好ましい。<Operation> The gas-liquid containing bubbles sucked from the gas-liquid suction pipe (1) moves down the gas-liquid delivery pipe (2) by the action of the air lift pump,
In the middle of the process, the bubbles on the lower side are pressed and crushed by the pressure from above due to gravity, and disappear. The treated water that does not contain bubbles is delivered to the gas-liquid separator (3) by an air lift pump. The new bubbles generated by the air lift pump delivered with the treated water are released from the water in the gas-liquid separator (3), and at this moment, the bubbles are broken, so that the gas in the bubbles is separated from the gas in the gas-liquid separator. Branch pipe (7) opening above (3)
Through the exhaust port (8). The bubble-free liquid that has passed through the main pipe (9) of the gas-liquid separator (3) is delivered to the sprinkler (4) and sprayed on the water surface of the wastewater treatment tank (10). This sprinkling has the effect of eliminating large bubbles in the wastewater treatment tank and collecting the bubbles toward the gas-liquid suction pipe (1) to facilitate the suction. Therefore, it is preferable to install the sprinkler (4) so that bubbles do not collect around the wastewater treatment tank (10).
以上の如く、本発明の気液還流型消泡装置は、汚水処
理槽（10）内で気液を還流せしめるので、汚水処理槽
（10）内の水位は本装置を使用することによっては変化
せず、固定式の気液吸込管であっても、頻繁にその開口
部の位置を調整する必要はない。又、一回目の気液循環
で泡が完全に消泡されなくても、この循環は連続して繰
り返されるので短時間で完全に泡を消泡せしめることが
できる。As described above, the gas-liquid reflux type defoaming device of the present invention causes gas-liquid to recirculate in the sewage treatment tank (10), so the water level in the sewage treatment tank (10) changes depending on the use of the device. Even if it is a fixed type gas-liquid suction pipe, it is not necessary to frequently adjust the position of the opening. Further, even if the bubbles are not completely defoamed in the first gas-liquid circulation, this circulation is continuously repeated, so that the bubbles can be completely defoamed in a short time.
《発明の効果》 以上詳述した如く、本発明の消泡装置は、汚水処理槽
内の気液を還流することによって消泡するので、他の施
設を必要とせず経済的である。又、散水による消泡を併
用することにより、更に消泡時間を短縮することができ
る。<< Effects of the Invention >> As described in detail above, the defoaming device of the present invention defoams by recirculating the gas-liquid in the sewage treatment tank, and thus is economical without requiring any other facility. Further, by using defoaming by sprinkling water together, the defoaming time can be further shortened.
第１図は本発明の消泡装置の断面図であり、第２図は第
１図のＡ−Ａ線上で切断した断面図である。 １……気液吸込管 ２……気液配送管 ３……気液分離器 ４……散水装置 ５……空気供給管 ６……フロート ７……分岐管 ８……排気口 ９……メインパイプ 10……汚水処理槽1 is a cross-sectional view of the defoaming device of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 ... Gas-liquid suction pipe 2 ... Gas-liquid delivery pipe 3 ... Gas-liquid separator 4 ... Sprinkler 5 ... Air supply pipe 6 ... Float 7 ... Branch pipe 8 ... Exhaust port 9 ... Main Pipe 10 ... Sewage treatment tank
Claims (3)
吸込管（１）、気液配送管（２）、気液配送管（２）か
ら分岐した空気供給管及び水面上方に配置した散水装置
（４）並びに排気口（８）を有する気液分離器（３）と
からなる消泡装置であって、前記気液吸込管（１）と散
水装置（４）とを、該散水装置（４）の前に設けた気液
分離器（３）を介して、水面下に伸びる気液配送管
（２）によって接続すると共に、水面に浮遊する泡を処
理水と共に気液吸込管（１）から気液配送管中に吸入
し、重力による上部からの圧力により最下部の泡を自然
消滅させるとともに、気液配送管中の処理水を前記気液
分離器（３）側へ配送せしめる如く、前記気液配送管
（２）に空気供給管（５）を分岐接続してエアリフトポ
ンプを形成せしめたことを特徴とする気液還流型消泡装
置。1. A gas-liquid suction pipe (1) opened from below the water surface toward the water surface, a gas-liquid delivery pipe (2), an air supply pipe branched from the gas-liquid delivery pipe (2), and above the water surface. A defoaming device comprising a water sprinkler (4) and a gas-liquid separator (3) having an exhaust port (8), the gas-liquid suction pipe (1) and the water sprinkler (4) being the water sprinkler. A gas-liquid separator (3) provided in front of (4) is used for connection by a gas-liquid delivery pipe (2) extending below the water surface, and bubbles floating on the water surface are treated together with the treated water into a gas-liquid suction pipe (1). ) Is sucked into the gas-liquid delivery pipe, and the bubbles at the bottom are naturally extinguished by the pressure from the upper part due to gravity, and the treated water in the gas-liquid delivery pipe is delivered to the gas-liquid separator (3) side. And that an air lift pump is formed by branching the air supply pipe (5) to the gas-liquid delivery pipe (2). Gas-liquid reflux type anti-foaming apparatus according to symptoms.
（４）側に、他端を気液配送管（２）側に接続せしめた
メインパイプ（９）と、一端が前記メインパイプ（９）
の上方に接続され、他端が解放された排気口（８）を有
する逆Ｕ字型の分岐管（７）とからなる請求項１に記載
の気液還流型消泡装置。2. A gas-liquid separator (3), a main pipe (9) having one end connected to the sprinkler (4) side and the other end connected to the gas-liquid delivery pipe (2) side, and one end of the main pipe (9). Pipe (9)
The gas-liquid reflux type defoaming device according to claim 1, comprising an inverted U-shaped branch pipe (7) having an exhaust port (8) which is connected to the upper side of the and has an open end at the other end.
位の変化に応じて上下に摺動する如く、該気液吸込管
（１）を気液配送管（２）に接続せしめた請求項１に記
載の気液還流型消泡装置。3. A gas-liquid suction pipe (1) having a float fixed thereto, the gas-liquid suction pipe (1) being connected to the gas-liquid delivery pipe (2) so that the float slides up and down according to a change in water level. The gas-liquid reflux type defoaming device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1187005A JPH082405B2 (en) | 1989-07-19 | 1989-07-19 | Gas-liquid reflux type defoaming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1187005A JPH082405B2 (en) | 1989-07-19 | 1989-07-19 | Gas-liquid reflux type defoaming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0352604A JPH0352604A (en) | 1991-03-06 |
| JPH082405B2 true JPH082405B2 (en) | 1996-01-17 |
Family
ID=16198538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1187005A Expired - Fee Related JPH082405B2 (en) | 1989-07-19 | 1989-07-19 | Gas-liquid reflux type defoaming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082405B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784568B (en) * | 2022-12-01 | 2024-07-05 | 湖南洪康新材料科技有限公司 | Glass bubbling device and control method thereof |
| CN118454498B (en) * | 2024-07-09 | 2024-12-06 | 江苏泽宇环境工程有限公司 | A mixing device for sewage treatment with chemical addition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109289A (en) * | 1983-11-28 | 1984-06-23 | Toshiba Corp | Waste water treating device |
| JPS62125897A (en) * | 1985-11-26 | 1987-06-08 | Nippon Kentetsu Co Ltd | Defoaming method for activated sludge |
-
1989
- 1989-07-19 JP JP1187005A patent/JPH082405B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0352604A (en) | 1991-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |