JP2003311295A - Membrane separation activated sludge method - Google Patents
Membrane separation activated sludge methodInfo
- Publication number
- JP2003311295A JP2003311295A JP2002116716A JP2002116716A JP2003311295A JP 2003311295 A JP2003311295 A JP 2003311295A JP 2002116716 A JP2002116716 A JP 2002116716A JP 2002116716 A JP2002116716 A JP 2002116716A JP 2003311295 A JP2003311295 A JP 2003311295A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- membrane separation
- activated sludge
- membrane
- aeration
- 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
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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は好気槽と無酸素槽から
なる活性汚泥法に膜分離槽を組合せた膜分離活性汚泥法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a membrane separation activated sludge method in which an activated sludge method comprising an aerobic tank and an oxygen-free tank is combined with a membrane separation tank.
【０００２】[0002]
【従来の技術】下水の処理において一例として窒素除去
を効率的に行う方法にステップ流入多段硝化脱窒法があ
る。そしてこの方法は後脱窒槽を設けることにより、処
理水全窒素濃度が３ｍｇ／ｌ程度以下の窒素除去率を得
るのであるが、最終池殿池を設けて重力沈殿による固液
分離を行うため、反応槽におけるＭＬＳＳ濃度を最大３
０００ｍｇ／ｌ程度しか高められないため、反応槽にお
いて１２時間程度の反応時間が必要である。2. Description of the Related Art As an example of a method for efficiently removing nitrogen in the treatment of sewage, there is a step-flow multistage nitrification denitrification method. In this method, a post-denitrification tank is provided to obtain a nitrogen removal rate with a total nitrogen concentration of about 3 mg / l or less in the treated water. However, since the final pond is provided for solid-liquid separation by gravity precipitation, the reaction Maximum MLSS concentration in the tank is 3
Since only about 000 mg / l can be increased, a reaction time of about 12 hours is required in the reaction tank.
【０００３】[0003]
【発明が解決しようとする課題】この発明は前記事情に
鑑み、反応槽における生物反応速度を増大し、最終沈殿
槽を不要とすることにある。SUMMARY OF THE INVENTION In view of the above circumstances, the present invention is to increase the biological reaction rate in a reaction tank and eliminate the need for a final precipitation tank.
【０００４】[0004]
【課題を解決するための手段】この発明は上記の目的を
達成するため好気槽及び無酸素槽の組み合わせからなる
活性汚泥生物反応槽を複数段直列に連ね、膜分離槽を最
終段の無酸素槽の後に設置し、膜分離槽は膜面洗浄の曝
気用の散気装置を設けて好気槽を兼用し、流入下水は各
無酸素槽に分割して供給され、好気槽で活性汚泥への曝
気により分解硝化反応を生じさせ、膜分離槽においてろ
過分離して処理水とする。In order to achieve the above-mentioned object, the present invention comprises a plurality of activated sludge biological reaction tanks, which are a combination of an aerobic tank and an oxygen-free tank, connected in series, and a membrane separation tank of the final stage is not connected. Installed after the oxygen tank, the membrane separation tank is also equipped with an air diffuser for aeration for cleaning the membrane surface and also serves as an aerobic tank, and the inflowing sewage is supplied separately to each anoxic tank and activated in the aerobic tank. Aeration of sludge causes decomposition nitrification reaction, which is separated by filtration in a membrane separation tank to obtain treated water.
【０００５】[0005]
【実施例】この発明の構成は図１のフローに従って説明
すると、この発明は好気槽Ｏ及び無酸素槽Ａの組み合わ
せからなる活性汚泥生物反応槽を複数段直列に連ねた生
物学的窒素除去プロセスに膜分離槽Ｂ及び後脱窒槽Ｄを
組み合わせた方法である。膜分離槽Ｂにおいてろ過によ
り分離される水が処理水Ｃとなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described with reference to the flow chart of FIG. In this method, a membrane separation tank B and a post-denitrification tank D are combined with the process. The water separated by filtration in the membrane separation tank B becomes the treated water C.
【０００６】膜分離槽Ｂは最終段の無酸素槽Ａの後に設
置される。膜分離槽Ｂは、膜面洗浄のために曝気を行な
い、好気槽を兼用している。この構成において、各無酸
素槽Ａには流入下水が分割して供給され、脱窒素工程に
おける活性汚泥の栄養源となる。また、好気槽Ｏでは活
性汚泥への曝気により有機物の分解及び硝化反応が生じ
る。The membrane separation tank B is installed after the last oxygen-free tank A. The membrane separation tank B performs aeration for cleaning the membrane surface and also serves as an aerobic tank. In this configuration, the inflowing sewage is dividedly supplied to each anoxic tank A and serves as a nutrient source for the activated sludge in the denitrification process. Further, in the aerobic tank O, decomposition of organic matter and nitrification reaction occur due to aeration of the activated sludge.
【０００７】後脱窒槽Ｄからは膜分離槽Ｂ前の無酸素槽
Ａに活性汚泥の循環を行う。また、膜分離槽Ｂからもそ
の前の無酸素槽Ａに活性汚泥の循環を行う。後脱窒槽Ｄ
及び膜分離槽Ｂから無酸素槽Ａに循環される活性汚泥量
の合計は、流入下水量に対して０〜４００％の範囲であ
る。The activated sludge is circulated from the post-denitrification tank D to the oxygen-free tank A in front of the membrane separation tank B. Also, the activated sludge is circulated from the membrane separation tank B to the anoxic tank A in front of it. Post denitrification tank D
The total amount of activated sludge circulated from the membrane separation tank B to the oxygen-free tank A is in the range of 0 to 400% with respect to the inflow sewage amount.
【０００８】またこの発明では、窒素除去に加えて後脱
窒槽Ｄから流入部無酸素槽Ａへの循環量を制御し、無酸
素槽Ａに嫌気部分が形成されるように運転することによ
り、生物学的なりん除去を行うことができる。Further, according to the present invention, in addition to nitrogen removal, the circulation amount from the post-denitrification tank D to the inflowing oxygen-free tank A is controlled so that the oxygen-free tank A is operated so that an anaerobic portion is formed. Biological phosphorus removal can be performed.
【０００９】またいずれかの好気槽Ｏまたは膜分離槽Ｂ
に鉄塩もしくはアルミ塩を主成分とする凝集剤Ｅを添加
することにより化学的なりん除去を行うこともできる。Further, either aerobic tank O or membrane separation tank B
It is also possible to chemically remove phosphorus by adding an aggregating agent E containing an iron salt or an aluminum salt as a main component.
【００１０】[0010]
【発明の効果】この発明は以上の構成からなり、固液分
離を膜分離によって行うため、ＭＬＳＳ濃度を８０００
〜２００００ｍｇ／ｌの範囲で運転することができるた
め、反応槽における生物反応速度が増大し、反応時間を
従来法の約６０％とすることができる。これに加えて、
最終沈殿池は不要であるため、必要な施設が削除され、
建設費や用地費が大幅に低減される。EFFECT OF THE INVENTION The present invention is constructed as described above, and since solid-liquid separation is performed by membrane separation, the MLSS concentration is 8000.
Since it can be operated in the range of up to 20000 mg / l, the biological reaction rate in the reaction vessel is increased, and the reaction time can be about 60% of that in the conventional method. In addition to this,
Since the final settling tank is unnecessary, the necessary facilities have been deleted,
Construction costs and land costs are greatly reduced.
【図１】この発明のフローを示したものである。FIG. 1 shows a flow of the present invention.
Ｏ…好気槽、Ａ…無酸素槽、Ｂ…膜分離槽、Ｃ…分離
水、Ｄ…後脱窒槽、Ｅ…凝集剤O ... Aerobic tank, A ... Oxygen-free tank, B ... Membrane separation tank, C ... Separation water, D ... Post-denitrification tank, E ... Coagulant
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D006 GA07 HA93 KA31 KA44 KB13 KB22 KC14 KD08 PA02 PB15 PC62 4D028 BB06 BB07 BC17 BC24 BD06 BD13 BD17 4D040 BB04 BB24 BB54 BB56 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 4D006 GA07 HA93 KA31 KA44 KB13 KB22 KC14 KD08 PA02 PB15 PC62 4D028 BB06 BB07 BC17 BC24 BD06 BD13 BD17 4D040 BB04 BB24 BB54 BB56
Claims (2)
る活性汚泥生物反応槽を複数段を直列に連ね、膜分離槽
を最終段の無酸素槽の後に設置し、膜分離槽は膜面洗浄
の曝気用の散気装置を設けて好気槽を兼用し、流入下水
は各無酸素槽に分割して供給され、好気槽で活性汚泥へ
の曝気により分解硝化反応を生じさせ、膜分離槽におい
てろ過分離して処理水とされることを特徴とする膜分離
活性汚泥法。1. An activated sludge biological reaction tank consisting of a combination of an aerobic tank and an anoxic tank is connected in a plurality of stages in series, and a membrane separation tank is installed after the final oxygen-free tank, and the membrane separation tank is a membrane surface. An aeration device for aeration for cleaning is also used as an aerobic tank. A membrane-separated activated sludge method, characterized in that it is separated into treated water by filtration in a separation tank.
後脱窒槽から無酸素槽に循環させる請求項１記載の膜分
離活性汚泥法。2. The membrane separation activated sludge method according to claim 1, wherein a part of the activated sludge flowing out of the membrane separation tank is circulated from the post-denitrification tank to the oxygen-free tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002116716A JP3718180B2 (en) | 2002-04-18 | 2002-04-18 | Membrane separation activated sludge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002116716A JP3718180B2 (en) | 2002-04-18 | 2002-04-18 | Membrane separation activated sludge method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003311295A true JP2003311295A (en) | 2003-11-05 |
| JP3718180B2 JP3718180B2 (en) | 2005-11-16 |
Family
ID=29534173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002116716A Expired - Lifetime JP3718180B2 (en) | 2002-04-18 | 2002-04-18 | Membrane separation activated sludge method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3718180B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100639649B1 (en) * | 2002-08-22 | 2006-10-30 | 주식회사 환경시설관리공사 | Multi-Stage Step-Feed Nutrients Removal Devices Using Media and Use Thereof |
| CN101811797A (en) * | 2010-02-11 | 2010-08-25 | 新奥科技发展有限公司 | Coal gasification waste water biochemical treatment equipment and method |
| CN103991958A (en) * | 2014-05-27 | 2014-08-20 | 青岛思普润水处理有限公司 | Method for upgrading and expanding sequencing batch biological pool by utilizing moving bed biofilm process |
| CN104326631A (en) * | 2014-11-05 | 2015-02-04 | 东北电力大学 | Gas wastewater treatment method characterized by returning aerobiotic effluent to anaerobic reactor to be diluted and subjected to anaerobic ammonia oxidation |
| CN106380041A (en) * | 2016-08-30 | 2017-02-08 | 上海世渊环保科技有限公司 | Detachable waste water processing facility and waste water processing technology |
| CN107473508A (en) * | 2017-08-28 | 2017-12-15 | 福建微水环保股份有限公司 | A kind of environmental microorganism and segmental influent two-stage AO removes the method for treating water of total nitrogen |
| CN108217947A (en) * | 2018-02-14 | 2018-06-29 | 温志军 | A kind of batch-type control method of sewage disposal AO and AAO techniques |
| CN109534509A (en) * | 2018-12-28 | 2019-03-29 | 南京瑞洁特膜分离科技有限公司 | A kind of integrated multistage multistage AO-MBR film tank arrangement |
-
2002
- 2002-04-18 JP JP2002116716A patent/JP3718180B2/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100639649B1 (en) * | 2002-08-22 | 2006-10-30 | 주식회사 환경시설관리공사 | Multi-Stage Step-Feed Nutrients Removal Devices Using Media and Use Thereof |
| CN101811797A (en) * | 2010-02-11 | 2010-08-25 | 新奥科技发展有限公司 | Coal gasification waste water biochemical treatment equipment and method |
| CN101811797B (en) * | 2010-02-11 | 2011-09-07 | 新奥科技发展有限公司 | Coal gasification waste water biochemical treatment equipment and method |
| CN103991958A (en) * | 2014-05-27 | 2014-08-20 | 青岛思普润水处理有限公司 | Method for upgrading and expanding sequencing batch biological pool by utilizing moving bed biofilm process |
| CN104326631A (en) * | 2014-11-05 | 2015-02-04 | 东北电力大学 | Gas wastewater treatment method characterized by returning aerobiotic effluent to anaerobic reactor to be diluted and subjected to anaerobic ammonia oxidation |
| CN104326631B (en) * | 2014-11-05 | 2016-04-27 | 东北电力大学 | A kind of outputted aerobic water is back to anaerobic reactor dilution and the method for Anammox gas treatment waste water |
| CN106380041A (en) * | 2016-08-30 | 2017-02-08 | 上海世渊环保科技有限公司 | Detachable waste water processing facility and waste water processing technology |
| CN107473508A (en) * | 2017-08-28 | 2017-12-15 | 福建微水环保股份有限公司 | A kind of environmental microorganism and segmental influent two-stage AO removes the method for treating water of total nitrogen |
| CN108217947A (en) * | 2018-02-14 | 2018-06-29 | 温志军 | A kind of batch-type control method of sewage disposal AO and AAO techniques |
| CN109534509A (en) * | 2018-12-28 | 2019-03-29 | 南京瑞洁特膜分离科技有限公司 | A kind of integrated multistage multistage AO-MBR film tank arrangement |
| CN109534509B (en) * | 2018-12-28 | 2023-12-26 | 南京瑞洁特膜分离科技有限公司 | Multistage AO-MBR membrane tank device of integration |
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