JPH04190889A - Operation method for sewage treating device - Google Patents
Operation method for sewage treating deviceInfo
- Publication number
- JPH04190889A JPH04190889A JP2320301A JP32030190A JPH04190889A JP H04190889 A JPH04190889 A JP H04190889A JP 2320301 A JP2320301 A JP 2320301A JP 32030190 A JP32030190 A JP 32030190A JP H04190889 A JPH04190889 A JP H04190889A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- liq
- flow rate
- treated
- tank
- 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.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 5
- 239000012528 membrane Substances 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005273 aeration Methods 0.000 claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 230000003466 anti-cipated effect Effects 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012466 permeate Substances 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
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は流入量の不規則な汚水を処理する汚水処理装置
の運転方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of operating a sewage treatment apparatus for treating sewage having an irregular inflow rate.
従来の技術
従来、流入量の不規則な汚水を処理する場合には、流入
する汚水を一旦流量調整槽に貯留した後に、一定量ずつ
曝気槽に供給している。また、曝気槽において浸漬型の
膜分離装置を使用する場合には、分離膜の表面に付着す
るケーキ層の堆積を防止するために膜分離装置を間欠運
転している。BACKGROUND OF THE INVENTION Conventionally, when treating sewage with an irregular flow rate, the inflowing sewage is once stored in a flow rate regulating tank and then supplied in fixed amounts to an aeration tank. Furthermore, when a submerged membrane separator is used in the aeration tank, the membrane separator is operated intermittently to prevent a cake layer from accumulating on the surface of the separation membrane.
つまり、膜分離装置の分離膜の膜面は、エアレーション
により生じる上昇攪拌流によって常に洗浄されているが
、膜分離装置を休止させることにより、洗浄効果が高ま
るとともに、分離膜の弛緩によりケーキ層が剥がれ易く
なり、しかも間欠運転時におけるケーキ層の堆積量が連
続運転時に較べて少ないのでより剥離し易いものとなる
。In other words, the membrane surface of the separation membrane in the membrane separator is constantly being cleaned by the upward agitation flow generated by aeration, but by stopping the membrane separator, the cleaning effect increases and the cake layer is reduced due to the relaxation of the separation membrane. Moreover, since the amount of cake layer deposited during intermittent operation is smaller than during continuous operation, it becomes easier to peel off.
また、膜分離装置の膜面におけるケーキ層の形成を防止
するためには、間欠運転における運転時間が短いほど、
休止時間が長いほど良く、またフラックス（分離膜の透
過流束）を低く設定して運転するほど良い。In addition, in order to prevent the formation of a cake layer on the membrane surface of the membrane separator, the shorter the operation time in intermittent operation, the more
The longer the pause time is, the better, and the lower the flux (permeation flux through the separation membrane) is set, the better.
発明が解決しようとする課題
しかし、上記した従来の構成においては、曝気槽おける
膜分離装置の間欠運転は将来の見込み処理量、つまり流
量調整槽の貯留量に関係なく行われており、膜分離装置
の休止時間を延ばす時間的余裕が見込めるにも拘らず過
剰な運転を行わねばならない問題があった。Problems to be Solved by the Invention However, in the conventional configuration described above, intermittent operation of the membrane separation device in the aeration tank is performed regardless of the expected future throughput, that is, the amount of storage in the flow rate adjustment tank. There has been a problem in that excessive operation has to be carried out even though there is ample time to extend the downtime of the equipment.
本発明は上記課題を解決するもので、将来の見込処理に
応じて効率良くケーキ層の洗浄を行うことができる汚水
処理装置の運転方法に関する。The present invention solves the above-mentioned problems and relates to a method of operating a sewage treatment apparatus that can efficiently wash a cake layer according to expected future treatment.
課題を解決するための手段
上記課題を解決するために本発明は、被処理水を一旦流
量調整槽に貯留した後に一定流量ずつ曝気槽に供給し、
曝気槽において曝気を行いながら膜分離装置を間欠運転
して処理水を取り出し、流量調整槽における水位の変動
に応じて膜分離装置の運転と休止の間欠時間を変更する
構成としたものである。Means for Solving the Problems In order to solve the above problems, the present invention provides the following steps: After the water to be treated is once stored in a flow rate adjustment tank, it is supplied at a constant flow rate to an aeration tank.
The membrane separator is operated intermittently to extract treated water while aeration is being carried out in the aeration tank, and the intermittent time between operation and suspension of the membrane separator is changed according to fluctuations in the water level in the flow rate adjustment tank.
また、被処理水を一旦流量調整槽に貯留した後に一定流
量ずつ曝気槽に供給し、曝気槽において曝気を行いなが
ら膜分離装置を間欠運転して処理水を取り出し、流量調
整槽における水位の変動に応じて膜分離装置のフラック
スを変更する構成としたものである。In addition, after the water to be treated is temporarily stored in the flow rate adjustment tank, it is supplied at a constant flow rate to the aeration tank, and while aeration is being performed in the aeration tank, the membrane separator is operated intermittently to take out the treated water, and the water level in the flow rate adjustment tank is changed. The structure is such that the flux of the membrane separation device is changed depending on the situation.
作用
上記した構成により、流量調整槽における水位が低下す
るにしたがって、つまり将来の見込み処理量が減少する
にともなって、膜分離装置の間欠運転における運転時間
を短くする。Effect: With the above configuration, as the water level in the flow rate regulating tank decreases, that is, as the expected future throughput decreases, the operating time of the membrane separator in intermittent operation is shortened.
このとき、間欠運転のサイクル時間を一定として運転時
間を短（するとともに、休止時間を長くしても良く、ま
たサイクル時間自身を短くして運転時間短くするととも
に、休止時間を一定にし、でもよい。At this time, the cycle time of intermittent operation may be kept constant and the operating time may be shortened (and the rest time may be lengthened), or the cycle time itself may be shortened to shorten the operating time and the rest time may be kept constant. .
このことにより、過剰な運転を防止して見込み処理量に
応じて効率良く膜分離装置の運転が行われ、運転時にお
いて膜面に付着するケーキ層が少なくなって曝気による
膜面の洗浄が容易なものとなり、膜分離’ＳＡ Ｋの分
離膜の延命が図られる。This prevents excessive operation and allows the membrane separation equipment to operate efficiently according to the expected throughput, reducing the cake layer that adheres to the membrane surface during operation and making it easier to clean the membrane surface with aeration. This will extend the life of the separation membrane of Membrane Separation'SAK.
第２の構成によれば、流量調整槽における水位が低下す
るにしたがって、つまり将来の見込み処理量が減少する
にともなって、膜分離装置のフラックスを減少させるこ
とにより、運転時に膜面に付着するケーキ層の形成が抑
制され、膜面の洗浄の容易化と分離膜の延命が図られる
。According to the second configuration, as the water level in the flow rate adjustment tank decreases, that is, as the expected future throughput decreases, the flux of the membrane separation device is reduced, so that the flux that adheres to the membrane surface during operation is reduced. The formation of a cake layer is suppressed, making it easier to clean the membrane surface and extending the life of the separation membrane.
実施例
以下本発明の一実施例を図面に基づいて説明する。第１
図において、流量調整槽１は汚水などの被処理水２の水
源に連通して設けられており、流量調整槽１の内部には
第ルベル計３が設けられている。また、流量調整槽１の
底部近傍に一端が開口する送水管４が他端を曝気槽５の
内部で開口して設けられており、送水管４の途中には送
液ポンプ６が介装されている。EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In the figure, a flow rate adjustment tank 1 is provided in communication with a water source of water to be treated 2 such as sewage, and a second rubel meter 3 is provided inside the flow rate adjustment tank 1. Further, a water supply pipe 4 is provided near the bottom of the flow rate adjustment tank 1 with one end open and the other end opened inside the aeration tank 5, and a liquid supply pump 6 is interposed in the middle of the water supply pipe 4. ing.
そして、曝気槽５の内部には第２レベル計７が設けられ
るとともに、底部近傍には曝気用の散気管８がブロア装
置９に連通して配置されている。A second level meter 7 is provided inside the aeration tank 5, and a diffuser pipe 8 for aeration is arranged near the bottom so as to communicate with a blower device 9.
また、散気管８の上方には膜分離装置ｌＯが被処理水２
に浸漬して配置されており、膜分離装置ＩＯの透過液流
路側に連通して設けられた処理水取出管１１の途中には
吸引ポンプ１２が介装されており、吸引ポンプ１２の下
流側に位置して電動式の流量調整弁１３が介装されてい
る。さらに、散気管８の下方には攪拌翼１４が配置され
ている。Further, above the aeration pipe 8, a membrane separator IO is installed for the water to be treated 2.
A suction pump 12 is interposed in the middle of the treated water take-out pipe 11 which is connected to the permeate flow path side of the membrane separator IO. An electrically operated flow rate regulating valve 13 is interposed therein. Furthermore, stirring blades 14 are arranged below the aeration pipe 8 .
そして、第ルベル計３と第２レベル計７と送液ポンプ６
と吸引ポンプ１２と流量調整弁１３は制御装置１５に電
気的に接続されている。Then, the second level gauge 3, the second level gauge 7, and the liquid feeding pump 6
The suction pump 12 and the flow rate regulating valve 13 are electrically connected to the control device 15.
以下、上記構成における作用について説明する。Hereinafter, the effects of the above configuration will be explained.
被処理水２は一旦流量調整槽１に貯留された後に一定流
量ずつ曝気槽５に供給される。つまり、制御装置１５は
第２レベル計７の下限値で送液ポンプ６を駆動させ、上
限値で停止させる。ただし、第ルベル計３の値が下限値
以上のときにおいてのみ送液ポンプ６の駆動が可能であ
る。The water to be treated 2 is once stored in the flow rate adjustment tank 1 and then supplied to the aeration tank 5 at a constant flow rate. That is, the control device 15 drives the liquid feeding pump 6 at the lower limit value of the second level meter 7, and stops it at the upper limit value. However, the liquid feeding pump 6 can be driven only when the value of the second Lebel meter 3 is equal to or higher than the lower limit value.
そして、曝気槽５においては、ブロア装置９で供給され
る空気が散気管８から噴出し、被処理水２に対して曝気
が行われるとともに、空気のエアリフト作用によって生
じる上昇攪拌流によって膜分離装置１０の分離膜の膜面
が洗浄される。また、膜分離装置ＩＯが吸引ポンプ１２
による負圧を受けて間欠運転され、固液分離された被処
理水が処理水取出管１１を通して外部に取り出される。In the aeration tank 5, the air supplied by the blower device 9 is blown out from the aeration pipe 8, and the water to be treated 2 is aerated. The membrane surfaces of the 10 separation membranes are cleaned. In addition, the membrane separator IO is connected to the suction pump 12
The solid-liquid separated treated water is taken out to the outside through the treated water take-out pipe 11.
このとき、制御装置１５は第２レベル計３で検出される
水位に応じて膜分離装置１０の運転と休止の間欠時間の
パターンを変更しながら吸引ポンプ１２を間欠運転する
。たとえば、流量調整槽１における水位か低下するにし
たがって、つまり将来の見込み処理量が減少するにとも
なって、吸引ポンプ１２の間欠運転における運転時間を
短くする。At this time, the control device 15 operates the suction pump 12 intermittently while changing the pattern of the intermittent time between operation and pause of the membrane separation device 10 according to the water level detected by the second level meter 3. For example, as the water level in the flow rate adjustment tank 1 decreases, that is, as the expected future throughput decreases, the operation time of the suction pump 12 in intermittent operation is shortened.
このとき、第１表に示すように、間欠運転のサイクル時
間ｔを一定（この場合１０分）として運転時間ｔ１を短
くするとともに、休止時間ｔ２を長くする。また、第２
表に示すように、サイクル時間ｔそれ自身を短くして運
転時間ｔ１短くするとともに、休止時間ｔ２を一定にし
てもよい。At this time, as shown in Table 1, the cycle time t of intermittent operation is kept constant (10 minutes in this case), the operation time t1 is shortened, and the rest time t2 is lengthened. Also, the second
As shown in the table, the cycle time t itself may be shortened to shorten the operating time t1, and the rest time t2 may be kept constant.
このことにより、過剰な運転を防止して見込み処理量に
応じて効率良く膜分離装置ＩＯの運転が行われ、運転時
において膜面に付着するケーキ層が少なくなって曝気に
よる膜面の洗浄が容易なものとなり、膜分離装置１０の
分離膜の延命が図られる第１表
第２表
第３表
こととなる。This prevents excessive operation and allows the membrane separator IO to operate efficiently according to the expected throughput, reducing the cake layer that adheres to the membrane surface during operation and cleaning the membrane surface by aeration. Table 1, Table 2, and Table 3 show that the life of the separation membrane of the membrane separation apparatus 10 can be extended.
そして、流量調整槽１における水位が低下するにしたが
って、つまり将来の見込み処理量が減少するにともなっ
て、流量調整弁１３を制御装置１５で操作し、第３表に
示すように、膜分離装置１０のフラックスを減少させる
ことにより、運転時に膜面に付着するケーキ層の形成が
抑制され、膜面の洗浄の容易化と分離膜の延命が図られ
る。Then, as the water level in the flow rate regulating tank 1 decreases, that is, as the expected future throughput decreases, the flow rate regulating valve 13 is operated by the control device 15, and as shown in Table 3, the membrane separation device By reducing the flux of No. 10, the formation of a cake layer that adheres to the membrane surface during operation is suppressed, making it easier to clean the membrane surface and extending the life of the separation membrane.
発明の効果
以上述へたように本発明によれば、流量調整槽における
水位の変動に伴って間欠運転の時間割合を変更すること
により、過剰な運転を防止して見込み処理量に応じて効
率良く膜分離装置の運転を行うことができ、運転時にお
いて膜面に付着するケーキ層を減少させて曝気による膜
面の洗浄を容易なものとすることができ、膜分離装置の
分離膜の延命を図ることができる。Effects of the Invention As described above, according to the present invention, by changing the time ratio of intermittent operation in accordance with fluctuations in the water level in the flow rate regulating tank, excessive operation is prevented and efficiency is increased according to the expected processing amount. The membrane separation equipment can be operated well, the cake layer that adheres to the membrane surface during operation can be reduced, the membrane surface can be easily cleaned by aeration, and the life of the separation membrane of the membrane separation equipment can be extended. can be achieved.
流量調整槽における水位の変動にともなって膜分離装置
のフラックスを減少させることにより、運転時に膜面に
付着するケーキ層の形成を抑制して、膜面の洗浄の容易
化と分離膜の延命を図ることができる。By reducing the flux in the membrane separation device as the water level changes in the flow rate adjustment tank, the formation of a cake layer that adheres to the membrane surface during operation is suppressed, making cleaning the membrane surface easier and extending the life of the separation membrane. can be achieved.
第１図は本発明の一実施例を示す汚水処理装置の全体構
成図である。
１・・・流量調整槽、２・・・被処理水、３・・・第２
レベル計、５・・・曝気槽、７・・・第２レベル計、Ｉ
Ｏ・・・膜分離装置、１２・・・吸引ポンプ。FIG. 1 is an overall configuration diagram of a sewage treatment apparatus showing one embodiment of the present invention. 1...Flow rate adjustment tank, 2...Water to be treated, 3...Second
Level meter, 5... Aeration tank, 7... Second level meter, I
O... Membrane separation device, 12... Suction pump.
Claims (1)
ずつ曝気槽に供給し、曝気槽において曝気を行いながら
膜分離装置を間欠運転して処理水を取り出し、流量調整
槽における水位の変動に応じて膜分離装置の運転と休止
の間欠時間を変更することを特徴とする汚水処理装置の
運転方法。 ２、被処理水を一旦流量調整槽に貯留した後に一定流量
ずつ曝気槽に供給し、曝気槽において曝気を行いながら
膜分離装置を間欠運転して処理水を取り出し、流量調整
槽における水位の変動に応じて膜分離装置のフラックス
を変更することを特徴とする汚水処理装置の運転方法。[Claims] 1. After the water to be treated is stored in a flow rate regulating tank, it is supplied at a constant flow rate to an aeration tank, and while aeration is being performed in the aeration tank, the membrane separator is operated intermittently to take out the treated water, and the flow rate is adjusted. A method for operating a sewage treatment device, comprising changing the intermittent time between operation and suspension of a membrane separation device in accordance with fluctuations in water level in a regulating tank. 2. Once the water to be treated is stored in the flow rate adjustment tank, it is supplied at a constant flow rate to the aeration tank, and while aeration is being performed in the aeration tank, the membrane separator is operated intermittently to take out the treated water, and the water level in the flow rate adjustment tank is changed. A method for operating a sewage treatment device, characterized by changing the flux of a membrane separation device according to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2320301A JPH0815597B2 (en) | 1990-11-22 | 1990-11-22 | Operating method of sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2320301A JPH0815597B2 (en) | 1990-11-22 | 1990-11-22 | Operating method of sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04190889A true JPH04190889A (en) | 1992-07-09 |
| JPH0815597B2 JPH0815597B2 (en) | 1996-02-21 |
Family
ID=18119969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2320301A Expired - Fee Related JPH0815597B2 (en) | 1990-11-22 | 1990-11-22 | Operating method of sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0815597B2 (en) |
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|---|---|---|---|---|
| JPH06106167A (en) * | 1992-09-28 | 1994-04-19 | Kubota Corp | Method and apparatus for solid-liquid separation of waste water |
| KR20020094950A (en) * | 2002-12-02 | 2002-12-18 | 쌍용양회공업(주) | Method and apparatus for wastewater treatments |
| JP2007167827A (en) * | 2005-12-26 | 2007-07-05 | Mitsubishi Rayon Eng Co Ltd | Apparatus for treating activated sludge |
| CN100348303C (en) * | 2006-04-19 | 2007-11-14 | 天津天大天环科技有限公司 | Energy-saving integrated type membrane bioreactor |
| JP2009523062A (en) * | 2006-01-12 | 2009-06-18 | シーメンス・ウォーター・テクノロジーズ・コーポレーション | Improved operating methods in the filtration process. |
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| US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
| US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
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| US9604166B2 (en) | 2011-09-30 | 2017-03-28 | Evoqua Water Technologies Llc | Manifold arrangement |
| US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
| US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
| US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
| US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
| US9914097B2 (en) | 2010-04-30 | 2018-03-13 | Evoqua Water Technologies Llc | Fluid flow distribution device |
| US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
| US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
| US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
| US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
Citations (3)
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| JPS61129094A (en) * | 1984-11-26 | 1986-06-17 | Nitto Electric Ind Co Ltd | Apparatus for treating membrane |
| JPH02268890A (en) * | 1989-04-11 | 1990-11-02 | Tokyu Constr Co Ltd | Device for treating sewage by hollow-fiber membrane |
| JPH02268889A (en) * | 1989-04-11 | 1990-11-02 | Tokyu Constr Co Ltd | Treatment of sewage by hollow-fiber membrane |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61129094A (en) * | 1984-11-26 | 1986-06-17 | Nitto Electric Ind Co Ltd | Apparatus for treating membrane |
| JPH02268890A (en) * | 1989-04-11 | 1990-11-02 | Tokyu Constr Co Ltd | Device for treating sewage by hollow-fiber membrane |
| JPH02268889A (en) * | 1989-04-11 | 1990-11-02 | Tokyu Constr Co Ltd | Treatment of sewage by hollow-fiber membrane |
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|---|---|---|---|---|
| JPH06106167A (en) * | 1992-09-28 | 1994-04-19 | Kubota Corp | Method and apparatus for solid-liquid separation of waste water |
| KR20020094950A (en) * | 2002-12-02 | 2002-12-18 | 쌍용양회공업(주) | Method and apparatus for wastewater treatments |
| US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
| US8858796B2 (en) | 2005-08-22 | 2014-10-14 | Evoqua Water Technologies Llc | Assembly for water filtration using a tube manifold to minimise backwash |
| US8894858B1 (en) | 2005-08-22 | 2014-11-25 | Evoqua Water Technologies Llc | Method and assembly for water filtration using a tube manifold to minimize backwash |
| JP2007167827A (en) * | 2005-12-26 | 2007-07-05 | Mitsubishi Rayon Eng Co Ltd | Apparatus for treating activated sludge |
| JP2009523062A (en) * | 2006-01-12 | 2009-06-18 | シーメンス・ウォーター・テクノロジーズ・コーポレーション | Improved operating methods in the filtration process. |
| CN100348303C (en) * | 2006-04-19 | 2007-11-14 | 天津天大天环科技有限公司 | Energy-saving integrated type membrane bioreactor |
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| US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
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| US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
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| US11065569B2 (en) | 2011-09-30 | 2021-07-20 | Rohm And Haas Electronic Materials Singapore Pte. Ltd. | Manifold arrangement |
| US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
| US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
| US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
| US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
| US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
| US11173453B2 (en) | 2013-10-02 | 2021-11-16 | Rohm And Haas Electronic Materials Singapores | Method and device for repairing a membrane filtration module |
| US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0815597B2 (en) | 1996-02-21 |
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