JP2000288574A - Biological treatment apparatus - Google Patents
Biological treatment apparatusInfo
- Publication number
- JP2000288574A JP2000288574A JP11094970A JP9497099A JP2000288574A JP 2000288574 A JP2000288574 A JP 2000288574A JP 11094970 A JP11094970 A JP 11094970A JP 9497099 A JP9497099 A JP 9497099A JP 2000288574 A JP2000288574 A JP 2000288574A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- biological treatment
- treatment apparatus
- tank
- membrane module
- 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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、膜分離機能を有す
る生物処理装置に関する。[0001] The present invention relates to a biological treatment apparatus having a membrane separation function.
【０００２】[0002]
【従来の技術】従来、膜分離活性汚泥法においては、生
物処理装置下部及び散気管下部に滞留した汚泥はそのま
ま放置されていたため、汚泥が腐敗し、生物処理の妨げ
となる原因となっていた。また、膜分離活性汚泥法で
は、汚泥濃度を高濃度に保つ必要があるが、高すぎると
膜性能に悪影響を与えてしまうため、細かな濃度管理が
必要になる。しかし、汚泥の引き抜きのタイミング及び
引き抜き量を制御することは非常に困難であった。2. Description of the Related Art Conventionally, in the membrane separation activated sludge method, sludge accumulated in a lower part of a biological treatment apparatus and a lower part of an aeration pipe is left as it is, so that the sludge rots and becomes a hindrance to biological treatment. . Further, in the membrane separation activated sludge method, it is necessary to keep the sludge concentration at a high concentration. However, if the sludge concentration is too high, the membrane performance is adversely affected. However, it was very difficult to control the timing and amount of sludge withdrawal.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、前記従来技
術の欠点を解消し、生物処理槽下部及び散気管下部に滞
留した汚泥を効果的にかつ簡便に引き抜くことができ、
槽内の汚泥濃度を好適な範囲に保持でき、生物処理性能
の優れた生物処理装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art, and can effectively and simply pull out sludge retained in the lower part of the biological treatment tank and the lower part of the diffuser pipe.
An object of the present invention is to provide a biological treatment apparatus that can maintain the sludge concentration in a tank within a suitable range and has excellent biological treatment performance.
【０００４】[0004]
【課題を解決するための手段】本発明の生物処理装置
は、膜モジュール及びその下方に散気管を備えた生物処
理装置において、処理槽の床面に勾配をつけて汚泥を槽
下部の一カ所に集中して堆積させ、その堆積部に汚泥引
き抜き管を設け、汚泥引き抜きを汚泥濃度に応じて行う
手段を設けたことを特徴とする。A biological treatment apparatus according to the present invention is a biological treatment apparatus provided with a membrane module and an air diffuser tube below the membrane module. And a means for performing sludge withdrawal according to the sludge concentration is provided.
【０００５】[0005]
【発明の実施の形態】汚泥濃度の測定は、粘度計、濁度
計又は比重計によって行うのが好ましい。また、散気管
入り口に取り付けた圧力センサを単独であるいは上記の
粘度計、濁度計又は比重計と組み合わせて用いて、汚泥
引き抜きをコントロールすることもできる。粘度計、濁
度計及び比重計は、定期的にサンプリングした汚泥を導
入する汚泥サンプリング槽に取り付けることが好まし
い。また、膜モジュールとしては、特に制限はなく、平
膜モジュール、中空糸モジュール、スパイラル型モジュ
ールなどを用いることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The measurement of the sludge concentration is preferably carried out with a viscometer, turbidity meter or hydrometer. Sludge extraction can also be controlled using the pressure sensor attached to the inlet of the diffuser tube alone or in combination with the above-mentioned viscometer, turbidity meter or hydrometer. The viscometer, turbidity meter and specific gravity meter are preferably attached to a sludge sampling tank into which sludge sampled periodically is introduced. The membrane module is not particularly limited, and a flat membrane module, a hollow fiber module, a spiral module, or the like can be used.
【０００６】本発明は、上記のように、膜を浸漬させる
生物処理槽の床面に勾配をつけることにより、処理槽下
部に滞留した汚泥を一カ所に集中させ、腐敗する前に効
率よく槽外に引き抜くことができるように、各種センサ
及び測定機器を導入し、汚泥の引き抜き量及び引き抜き
タイミングをコントロールし、槽内の汚泥濃度を安定に
保持するように構成したものである。According to the present invention, as described above, the slope of the floor of the biological treatment tank in which the membrane is immersed is formed to concentrate sludge accumulated in the lower part of the treatment tank in one place, and to efficiently treat the sludge before it rots. Various sensors and measuring devices are introduced so that the sludge can be pulled out, the amount and timing of sludge withdrawal are controlled, and the sludge concentration in the tank is stably maintained.
【０００７】[0007]
【実施例】次に、図面を参照して本発明の生物処理装置
をさらに具体的に説明する。図１は、本発明の一実施例
を示す生物処理装置の系統図である。図１において、床
面に傾斜をつけた生物処理槽１０は、内部に浸漬膜モジ
ュール２０、散気管３０、汚泥サンプリング装置４０及
び槽床面には汚泥引き抜きライン５０を経て、汚泥引き
抜きポンプ６０が存在する。また、生物処理槽１０に
は、原水槽７０から原水供給ライン８０を経て、原水を
供給する原水供給ポンプ９０が存在し、二次側には処理
水ポンプ１００が存在する。さらに、散気装置１１０か
ら導入されたエアーは、エアー供給ライン１２０を通っ
て散気管３０より生物処理槽１０内に散気される。な
お、エアー供給ライン１２０には、圧力センサ１３０が
組み込まれており、ここで得られた信号は、タイマー付
き制御装置１４０に送られ、汚泥引き抜きポンプ６０の
運転に反映される。汚泥サンプリング装置４０は、タイ
マーにより定期的に汚泥のサンプリングを行い、サンプ
リング槽１５０内に設置された粘度計１６０を連動させ
て測定を行い、そこで得られた信号は前述と同様に汚泥
引き抜きポンプ６０の運転に反映される。Next, the biological treatment apparatus of the present invention will be described more specifically with reference to the drawings. FIG. 1 is a system diagram of a biological treatment apparatus showing one embodiment of the present invention. In FIG. 1, a biological treatment tank 10 having an inclined floor is provided with an immersion membrane module 20, an air diffuser 30, a sludge sampling device 40, and a sludge extraction pump 60 on the tank floor through a sludge extraction pump 60. Exists. The biological treatment tank 10 has a raw water supply pump 90 for supplying raw water from a raw water tank 70 via a raw water supply line 80, and a treated water pump 100 on the secondary side. Further, the air introduced from the air diffuser 110 is diffused into the biological treatment tank 10 through the air supply line 120 and the air diffuser 30. A pressure sensor 130 is incorporated in the air supply line 120, and a signal obtained here is sent to a control device 140 with a timer, and is reflected in the operation of the sludge extraction pump 60. The sludge sampling device 40 periodically samples sludge using a timer, performs measurement in conjunction with a viscometer 160 installed in a sampling tank 150, and outputs a signal obtained therefrom in the same manner as described above. It is reflected in driving.
【０００８】運転中、生物処理槽１０の床面及び散気管
３０の下部には、滞留した汚泥溜まりができ、この汚泥
は生物処理槽１０の床面の傾斜により汚泥引き抜きライ
ン５０の上部に集められる。圧力センサ１３０又は粘度
計１６０が、ある信号をタイマー付き制御装置１４０に
送信したとき、汚泥引き抜きポンプ６０を運転させ、汚
泥の引き抜きを行う。また、圧力センサ１３０又は粘度
計１６０がある時間を経過してもタイマー付き制御装置
１４０に一定の信号を送らない場合には、タイマー付き
制御装置１４０のタイマーにより汚泥引き抜きポンプ６
０を運転させ、汚泥の引き抜きを行うものとする。During operation, accumulated sludge accumulates on the floor of the biological treatment tank 10 and the lower part of the air diffuser 30. This sludge is collected at the upper part of the sludge extraction line 50 due to the inclination of the floor of the biological treatment tank 10. Can be When the pressure sensor 130 or the viscometer 160 transmits a certain signal to the control device 140 with a timer, the sludge extraction pump 60 is operated to extract sludge. If the pressure sensor 130 or the viscometer 160 does not send a certain signal to the timer-equipped control device 140 after a certain period of time, the timer of the timer-equipped control device 140 causes the sludge removal pump 6 to operate.
0 is operated to extract sludge.
【０００９】これにより、生物処理槽下部及び散気管下
部に滞留した汚泥を効率よく、かつ簡便に系外に引き抜
くことができるため、生物処理槽内の汚泥濃度を安定に
保つことができ、生物処理性能の向上を図ることができ
る。さらに、汚泥濃度の変動を少なく抑えることができ
るため、膜に与える負担も少なくて済み、安定した膜処
理性能の維持にも大きな効果がある。[0009] This makes it possible to efficiently and simply pull out the sludge accumulated in the lower part of the biological treatment tank and the lower part of the diffuser pipe to the outside of the system. Processing performance can be improved. Further, since the fluctuation of the sludge concentration can be reduced, the burden on the membrane can be reduced, and there is a great effect in maintaining stable membrane treatment performance.
【００１０】[0010]
【発明の効果】本発明によれば、生物処理槽下部及び散
気管下部に滞留した汚泥を一カ所に集中させ、これを効
果的に引き抜くことを可能にし、汚泥の腐敗を防止し、
生物処理性能を向上させることができる。また、汚泥濃
度の指標を散気圧力、粘度、濁度又は比重を採用するこ
とにより、高濃度活性汚泥系でもリアルタイムで汚泥濃
度測定を行うことが可能となり、自動的な汚泥の引き抜
きを行うことができ、安定した濃度管理が可能となり、
生物処理性能を著しく向上させる効果がある。さらに、
生物処理槽内の汚泥濃度を安定に保つことができるた
め、膜への負荷変動が少なくてすみ、安定した膜処理性
能を維持しうる効果がある。According to the present invention, the sludge accumulated in the lower part of the biological treatment tank and the lower part of the air diffuser can be concentrated in one place, and this can be effectively extracted, thereby preventing sludge decay.
Biological treatment performance can be improved. In addition, by adopting the aeration pressure, viscosity, turbidity or specific gravity as the index of the sludge concentration, it is possible to measure the sludge concentration in real time even in a high-concentration activated sludge system, and to perform automatic sludge extraction. And stable concentration control becomes possible,
This has the effect of significantly improving biological treatment performance. further,
Since the sludge concentration in the biological treatment tank can be stably maintained, load fluctuation on the membrane can be reduced, and there is an effect that stable membrane treatment performance can be maintained.
【図１】図１は、本発明の一実施例を示す生物処理装置
の系統図である。FIG. 1 is a system diagram of a biological treatment apparatus showing one embodiment of the present invention.
１０ 生物処理槽 ２０ 膜モジール ３０ 散気管 ４０ 汚泥サンプリング装置 ５０ 汚泥引き抜きライン ６０ 汚泥引き抜きポンプ ７０ 原水槽 ８０ 原水供給ライン ９０ 原水供給ポンプ １００ 処理水ポンプ １１０ 散気装置 １２０ エアー供給ライン １３０ 圧力センサ １４０ タイマー付き制御装置 １５０ サンプリング槽 １６０ 粘度計 DESCRIPTION OF SYMBOLS 10 Biological treatment tank 20 Membrane module 30 Air diffuser 40 Sludge sampling device 50 Sludge extraction line 60 Sludge extraction pump 70 Raw water tank 80 Raw water supply line 90 Raw water supply pump 100 Treated water pump 110 Air diffuser 120 Air supply line 130 Pressure sensor 140 Timer With control device 150 sampling tank 160 viscometer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 市川 裕之 東京都千代田区内神田１丁目１番14号 日 立プラント建設株式会社内 (72)発明者 安藤 尋樹 東京都千代田区内神田１丁目１番14号 日 立プラント建設株式会社内 Ｆターム(参考） 4D006 GA02 HA01 HA41 HA61 HA93 JA53Z KA31 KA44 KB13 KB22 KC27 KE14P KE14Q KE30P MA01 MA03 MB02 PA02 PB08 PB70 PC64 4D028 BC03 BC17 BD17 CA12 CB03 CB08 CC05 CD05 CE01 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroyuki Ichikawa 1-1-1 Uchikanda, Chiyoda-ku, Tokyo Inside Hitachi Plant Construction Co., Ltd. (72) Hiroki Ando 1-1-1 Uchikanda, Chiyoda-ku, Tokyo No. 14 F-term in Hitachi Plant Construction Co., Ltd. (Reference) 4D006 GA02 HA01 HA41 HA61 HA93 JA53Z KA31 KA44 KB13 KB22 KC27 KE14P KE14Q KE30P MA01 MA03 MB02 PA02 PB08 PB70 PC64 4D028 BC03 BC17 BD17 CA12 CB03 CB08 CC05 CD05 CE01
Claims (3)
えた生物処理装置において、処理槽の床面に勾配をつけ
て汚泥を槽下部の一カ所に集中して堆積させ、その堆積
部に汚泥引き抜き管を設け、汚泥引き抜きを汚泥濃度に
応じて行う手段を設けたことを特徴とする生物処理装
置。In a biological treatment apparatus provided with a membrane module and a diffuser pipe below the membrane module, sludge is concentrated on one part of the lower part of the treatment tank by inclining the floor of the treatment tank, and the sludge is deposited on the accumulation part. A biological treatment apparatus comprising: a drawing pipe; and means for performing sludge drawing in accordance with sludge concentration.
比重計を設けた請求項１記載の生物処理装置。2. The biological treatment apparatus according to claim 1, further comprising a viscometer, a turbidity meter, or a hydrometer for measuring the sludge concentration.
力センサを取り付けた請求項１又は２記載の生物処理装
置。3. The biological treatment apparatus according to claim 1, wherein a pressure sensor is provided at an inlet of the air diffuser for measuring the sludge concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09497099A JP3555491B2 (en) | 1999-04-01 | 1999-04-01 | Biological treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09497099A JP3555491B2 (en) | 1999-04-01 | 1999-04-01 | Biological treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000288574A true JP2000288574A (en) | 2000-10-17 |
| JP3555491B2 JP3555491B2 (en) | 2004-08-18 |
Family
ID=14124784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09497099A Expired - Fee Related JP3555491B2 (en) | 1999-04-01 | 1999-04-01 | Biological treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3555491B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005068379A1 (en) * | 2004-01-13 | 2005-07-28 | Itochu Forestry Corp. | Wastewater cleaning system |
| JP2006068584A (en) * | 2004-08-31 | 2006-03-16 | Shin Meiwa Ind Co Ltd | Underwater degradation type garbage-treating apparatus and method of controlling its operation |
| WO2021106575A1 (en) * | 2019-11-25 | 2021-06-03 | Ｉｈｉ運搬機械株式会社 | Method and apparatus for treating coal waste water |
-
1999
- 1999-04-01 JP JP09497099A patent/JP3555491B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005068379A1 (en) * | 2004-01-13 | 2005-07-28 | Itochu Forestry Corp. | Wastewater cleaning system |
| US7494588B2 (en) | 2004-01-13 | 2009-02-24 | Itochu Forestry Corp. | Wastewater purification system |
| JP2006068584A (en) * | 2004-08-31 | 2006-03-16 | Shin Meiwa Ind Co Ltd | Underwater degradation type garbage-treating apparatus and method of controlling its operation |
| WO2021106575A1 (en) * | 2019-11-25 | 2021-06-03 | Ｉｈｉ運搬機械株式会社 | Method and apparatus for treating coal waste water |
| JP2021084040A (en) * | 2019-11-25 | 2021-06-03 | Ｉｈｉ運搬機械株式会社 | Coal wastewater treatment method and device |
| JP7016339B2 (en) | 2019-11-25 | 2022-02-04 | Ｉｈｉ運搬機械株式会社 | Coal wastewater treatment method and equipment |
| CN114728819A (en) * | 2019-11-25 | 2022-07-08 | Ihi 运搬机械株式会社 | Method and apparatus for treating coal drainage |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3555491B2 (en) | 2004-08-18 |
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