JPH0813359B2 - Wastewater treatment equipment containing nitrogen - Google Patents
Wastewater treatment equipment containing nitrogenInfo
- Publication number
- JPH0813359B2 JPH0813359B2 JP2061497A JP6149790A JPH0813359B2 JP H0813359 B2 JPH0813359 B2 JP H0813359B2 JP 2061497 A JP2061497 A JP 2061497A JP 6149790 A JP6149790 A JP 6149790A JP H0813359 B2 JPH0813359 B2 JP H0813359B2
- Authority
- JP
- Japan
- Prior art keywords
- treatment
- tank
- treatment tank
- activated sludge
- filtration
- 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 - Lifetime
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、窒素分含有有機系排水の処理施設などにお
いて用いられ、有機分及び窒素分を除去するための窒素
分含有排水の処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment device for nitrogen-containing wastewater for removing organic components and nitrogen contents, which is used in a treatment facility for nitrogen-containing organic wastewater.
従来の技術 従来のこの種の窒素分含有有機系排水の処理装置とし
て、たとえば第２図に示すようなものがある。ここで1,
2は２段に構成された嫌気性処理槽であり、上流側の嫌
気性処理槽１には原水供給路３が導かれている。これら
嫌気性処理槽（通性嫌気性処理槽を含む）1,2は供給路
３からの排水を嫌気性処理するものであるが、下流側の
嫌気性処理槽２には、嫌気性処理の終わった被処理液を
好気性処理するための好気性処理槽４が接続されてい
る。好気性処理槽４の内部には膜モジュール５が設置さ
れ、この膜モジュール５は、吸引ポンプ６を運転するこ
とによって、槽内の被処理液を濃縮液とろ過液とにろ過
分離する。膜モジュール５よりも下方には曝気用散気管
７が設けられ、この散気管７は、ブロワ８からの空気を
膜モジュール５に向けて上方へ気泡として吹き出し可能
である。2. Description of the Related Art As a conventional apparatus for treating nitrogen-containing organic wastewater of this type, there is, for example, one shown in FIG. Where 1,
Reference numeral 2 is an anaerobic treatment tank configured in two stages, and a raw water supply passage 3 is guided to the anaerobic treatment tank 1 on the upstream side. These anaerobic treatment tanks (including facultative anaerobic treatment tanks) 1 and 2 anaerobically treat the wastewater from the supply passage 3, but the anaerobic treatment tank 2 on the downstream side is a anaerobic treatment tank. An aerobic treatment tank 4 for aerobically treating the liquid to be treated is connected. A membrane module 5 is installed inside the aerobic treatment tank 4, and the membrane module 5 operates a suction pump 6 to separate the liquid to be treated in the tank into a concentrated liquid and a filtrate. An aeration diffuser 7 is provided below the membrane module 5, and the diffuser 7 can blow the air from the blower 8 upward toward the membrane module 5 as bubbles.
すなわち、好気性処理槽４の中の被処理液は、散気管
７からの気泡によって上昇流となり、膜モジュール５の
膜間を通過してろ過処理される。ろ過処理によって生じ
た濃縮液はさらに上昇して槽内を循環し、この循環によ
り槽内の被処理液（混合溶液）に空気が供給されて、活
性汚泥処理が行われる。また好気性処理槽４の中の混合
溶液の一部は、ポンプ９を備えた管路10によって、最上
流側の嫌気性処理槽１へ返送される。That is, the liquid to be treated in the aerobic treatment tank 4 becomes an upward flow due to the bubbles from the air diffuser 7, passes through the membranes of the membrane module 5, and is filtered. The concentrated liquid generated by the filtration process further rises and circulates in the tank, and by this circulation, air is supplied to the liquid to be treated (mixed solution) in the tank to perform the activated sludge treatment. A part of the mixed solution in the aerobic treatment tank 4 is returned to the anaerobic treatment tank 1 on the most upstream side by a pipe 10 equipped with a pump 9.
発明が解決しようとする課題 しかし、このような従来のものでは、好気性微生物処
理槽内の液を返送するためのポンプ９が必要なため、動
力費がかさむという問題点を有する。SUMMARY OF THE INVENTION However, such a conventional one has a problem that the power cost is high because the pump 9 for returning the liquid in the aerobic microbial treatment tank is required.
そこで本発明はこのようなランニングコストが高いと
いう問題点を解決し、かつ装置費を低下できるようにす
ることを目的とする。Therefore, an object of the present invention is to solve the problem that the running cost is high and to reduce the device cost.
課題を解決するための手段 上記目的を達成するため本発明は、 排水処理施設に設けられた単数または複数の非通性ま
たは通性の嫌気性処理槽と、この嫌気性処理槽よりも下
流側に設けられた好気性処理槽とを有し、 前記好気性処理槽を活性汚泥処理部とろ過処理部とに
区画し、 前記ろ過処理部に、このろ過処理部の混合溶液を濃縮
液（混合溶液）とろ過液とに分離する膜モジュールと、
この膜モジュールの下方に位置して混合溶液中に前記活
性汚泥処理部での活性汚泥処理のための空気を吹き出す
曝気用散気管とを設け、 前記ろ過処理部の周壁を、最上流側の嫌気性処理槽の
液面よりも高い位置まで形成し、かつ、 前記ろ過処理部の中の濃縮液（混合溶液）を、前記周
壁の上端近傍位置から最上流側の嫌気性処理槽に向けて
自然流下させる手段を設けたものである。Means for Solving the Problems In order to achieve the above object, the present invention provides a single or a plurality of non-permeable or facultative anaerobic treatment tanks provided in a wastewater treatment facility, and a downstream side of the anaerobic treatment tanks. And an aerobic treatment tank provided in the aerobic treatment tank, the aerobic treatment tank is divided into an activated sludge treatment section and a filtration treatment section, and the mixed solution of the filtration treatment section is concentrated into the filtration treatment section (mixed solution). Solution) and a membrane module that separates into a filtrate,
An aeration diffuser located below the membrane module for blowing air for the activated sludge treatment in the activated sludge treatment unit into the mixed solution is provided, and the peripheral wall of the filtration treatment unit is set to the anaerobic side on the most upstream side. Is formed up to a position higher than the liquid level of the anaerobic treatment tank, and the concentrated liquid (mixed solution) in the filtration treatment section is naturally directed from the position near the upper end of the peripheral wall toward the anaerobic treatment tank on the most upstream side. It is provided with a means for making it flow down.
作用 このような構成において、散気管から空気を吹き出す
と、この空気の存在によって活性汚泥処理部における活
性汚泥処理が効果的に行われる。また、散気管からの空
気の吹き出しによって、ろ過処理部の液面が上昇する。
したがって、膜モジュールによって分離された濃縮液
は、上記液面の上昇にしたがって最上流側の嫌気性処理
槽の液面よりも高い位置に達し、この結果嫌気性処理槽
へ自然流下することになって、ポンプなどを用いること
なしに濃縮液の返送が行われる。Action In such a configuration, when air is blown out from the air diffuser, the activated sludge treatment in the activated sludge treatment section is effectively performed due to the presence of this air. Further, the liquid level of the filtration processing unit rises due to the air blown out from the air diffuser.
Therefore, the concentrated liquid separated by the membrane module reaches a position higher than the liquid surface of the anaerobic treatment tank on the most upstream side as the liquid surface rises, and as a result, naturally flows down to the anaerobic treatment tank. Then, the concentrated liquid is returned without using a pump or the like.
実施例 第１図において、11,12は２段に構成された嫌気性処
理槽（通性嫌気性槽含む）であり、上流側の槽11には、
原水供給路13が導かれている。下流側の嫌気性処理槽12
には好気性処理槽14が接続され、この好気性処理槽14
は、仕切壁15によって、活性汚泥処理部16とろ過処理部
17とに区画されている。Example In FIG. 1, 11 and 12 are anaerobic treatment tanks (including facultative anaerobic tanks) configured in two stages, and the upstream tank 11 has
A raw water supply channel 13 is led. Anaerobic treatment tank on the downstream side 12
The aerobic treatment tank 14 is connected to the
The partition wall 15 enables the activated sludge treatment unit 16 and the filtration treatment unit.
It is divided into 17 and.
ろ過処理部17の内部には膜モジュール18が通常複数段
に設けられ、これら膜モジュール18には槽外において吸
引ポンプ19が接続されている。膜モジュール18の下方に
は曝気用散気管20が設けられ、この曝気用散気管20に
は、槽外においてブロワ21が接続されている。Membrane modules 18 are usually provided in multiple stages inside the filtration processing unit 17, and suction pumps 19 are connected to these membrane modules 18 outside the tank. An aeration diffuser 20 is provided below the membrane module 18, and a blower 21 is connected to the aeration diffuser 20 outside the tank.
上流側の槽11,12から下流側の槽12,14へは、越流部2
2,23および底部開口24,25を介して被処理液26が流れ込
むように構成されている。この流れは上流側の槽より下
流側の槽へ短絡流を生じないような構造であればよくこ
の例にはこだわる必要はない、また、好気性処理槽14に
おける活性汚泥処理部16とろ過処理部17とは、仕切壁15
の下方に設けられた底部開口27によって、互いに連通さ
れている。From the upstream tanks 11 and 12 to the downstream tanks 12 and 14, the overflow section 2
The liquid to be treated 26 is configured to flow in through the openings 2, 23 and the bottom openings 24, 25. It is not necessary to be particular about this example as long as this flow has a structure that does not cause a short circuit flow from the upstream side tank to the downstream side tank, and the activated sludge treatment section 16 and the filtration treatment in the aerobic treatment tank 14 Part 17 is a partition wall 15
They are communicated with each other by a bottom opening 27 provided below.
ろ過処理部17の周壁を構成する仕切壁15と好気性処理
槽14の槽壁28とは、最上流側の嫌気性処理槽11の液面よ
りも高い位置まで形成されている。そして、仕切壁15ま
たは槽壁28の上流近傍位置と最上流側の嫌気性処理槽11
との間には、この嫌気性処理槽11へ向けて下り匂配をな
す流路30が設けられている。流路30は、樋や管などによ
って構成されている。The partition wall 15 forming the peripheral wall of the filtration processing unit 17 and the tank wall 28 of the aerobic treatment tank 14 are formed to a position higher than the liquid level of the anaerobic treatment tank 11 on the most upstream side. Then, the position near the upstream side of the partition wall 15 or the tank wall 28 and the anaerobic treatment tank 11 on the most upstream side.
A flow path 30 having a downward scent toward the anaerobic treatment tank 11 is provided between and. The flow path 30 is composed of a gutter, a pipe, or the like.
このような構成において、供給路13から嫌気性処理槽
11へ供給された排水は、この嫌気性処理槽11、嫌気性処
理槽12および好気性処理槽13に順送りされるうちに硝
化、脱窒処理される。In such a configuration, the anaerobic treatment tank from the supply path 13
The wastewater supplied to 11 is subjected to nitrification and denitrification while being sent to the anaerobic treatment tank 11, the anaerobic treatment tank 12 and the aerobic treatment tank 13.
好気性処理槽14において、嫌気性処理槽12から活性汚
泥処理部16に流入した被処理液26は、ブロワ21から散気
管20を経て槽内に供給される空気の存在下において活性
汚泥処理され、この活性汚泥処理された被処理液26は、
底部開口27を経てろ過処理部17へ流入する。In the aerobic treatment tank 14, the liquid to be treated 26 that has flowed into the activated sludge treatment unit 16 from the anaerobic treatment tank 12 is treated with activated sludge in the presence of air supplied from the blower 21 to the tank through the diffuser pipe 20. , The liquid to be treated 26 that has been treated with this activated sludge is
It flows into the filtration processing unit 17 through the bottom opening 27.
ろ過処理部17では、散気管20から吹き出される空気に
より上昇流が生じ、この上昇流に乗った被処理液26は、
膜モジュール18の膜間部分を通過する。このとき、吸引
ポンプ19を運転しておくと、被処理液26は、濃縮液とろ
過液とに分離され、ろ過液は吸引ポンプ19によって槽外
へ排出される。In the filtration processing section 17, an upward flow is generated by the air blown out from the air diffusing tube 20, and the liquid to be treated 26 riding on the upward flow is
It passes through the intermembrane portion of the membrane module 18. At this time, if the suction pump 19 is operated, the liquid to be treated 26 is separated into a concentrated liquid and a filtrate, and the filtrate is discharged to the outside of the tank by the suction pump 19.
このろ過処理部17では、散気管20から空気が吹き出す
ことによってその液面が上昇する。このため、膜モジュ
ール18により分離された濃縮液31は、この液面の上昇に
ともなって流路30へ流れ込み、この流路30を自然流下し
て嫌気性処理槽11へ返送されることで、系内を循環す
る。In the filtration processing unit 17, the liquid level rises due to the air blown out from the air diffuser 20. Therefore, the concentrated liquid 31 separated by the membrane module 18 flows into the flow channel 30 as the liquid level rises, and naturally flows down the flow channel 30 to be returned to the anaerobic treatment tank 11, Circulates in the system.
ここで膜モジュール18上の水深が充分（例えば50cm以
上）ある場合透過水の取出し用ポンプ19は設けなくて透
過水取り出し用のパイプ（バルブをつけてもよい）だけ
でもよい。Here, when the water depth on the membrane module 18 is sufficient (for example, 50 cm or more), the permeated water extraction pump 19 may not be provided and only a permeated water extraction pipe (a valve may be provided).
発明の効果 以上述べたように本発明によると、活性汚泥処理部に
おける活性汚泥処理のために曝気用散気管から吹き出さ
れる空気の作用にもとづくろ過処理部内の液面の上昇を
利用して、このろ過処理部において生じた濃縮液を最上
流側の嫌気性処理槽へ自然流下により返送するようにし
たため、好気性処理槽において活性汚泥処理のために曝
気用散気管から槽内へ吹き出される空気を前記濃縮液の
返送のために兼用することができ、この返送のためのポ
ンプなどの移送装置を別に設ける必要がなく、装置全体
を小形で簡略なものとすることができる。As described above, according to the present invention, by utilizing the rise of the liquid level in the filtration treatment section based on the action of the air blown out from the aeration diffuser pipe for the activated sludge treatment in the activated sludge treatment section, Since the concentrated liquid generated in this filtration processing unit was returned to the anaerobic treatment tank on the most upstream side by gravity flow, it is blown out from the aeration diffuser pipe into the tank for activated sludge treatment in the aerobic treatment tank. Air can be used also for returning the concentrated liquid, and it is not necessary to separately provide a transfer device such as a pump for this returning, and the entire device can be made small and simple.
第１図は本発明の一実施例の窒素除去装置の断面図、第
２図は従来の窒素除去装置の断面図である。 11,12……嫌気性処理槽、14……好気性処理槽、15……
仕切壁、16……活性汚泥処理部、17……ろ過処理部、18
……膜モジュール、20……曝気用散気管、30……流路、
31……濃縮液。FIG. 1 is a sectional view of a nitrogen removing apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional nitrogen removing apparatus. 11,12 …… Anaerobic treatment tank, 14 …… Aerobic treatment tank, 15 ……
Partition wall, 16 …… Activated sludge treatment part, 17 …… Filtration treatment part, 18
...... Membrane module, 20 …… Aeration diffuser, 30 …… Flow path,
31 ... concentrated liquid.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鳴上 善久 大阪府大阪市浪速区敷津東１丁目２番47号 久保田鉄工株式会社内 (56)参考文献 特開 昭62−155991（ＪＰ，Ａ) 実開 昭58−124293（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshihisa Naruue 1-247 Shikitsuhigashi, Naniwa-ku, Osaka City, Osaka Prefecture Kubota Iron Works Co., Ltd. (56) ) Actual development Sho 58-124293 (JP, U)
Claims (1)
の非通性または通性の嫌気性処理槽と、この嫌気性処理
槽よりも下流側に設けられた好気性処理槽とを有し、 前記好気性処理槽を活性汚泥処理部とろ過処理部とに区
画し、 前記ろ過処理部に、このろ過処理部の混合溶液を濃縮液
とろ過液とに分離する膜モジュールと、この膜モジュー
ルの下方に位置して混合溶液中に前記活性汚泥処理部で
の活性汚泥処理のための空気を吹き出す曝気用散気管と
を設け、 前記ろ過処理部の周壁を、最上流側の嫌気性処理槽の液
面よりも高い位置まで形成し、かつ、 前記ろ過処理部の中の濃縮液を、前記周壁の上端近傍位
置から最上流側の嫌気性処理槽に向けて自然流下させる
手段を設け、 たことを特徴とする窒素分含有排水の処理装置。1. A single or a plurality of impermeable or facultative anaerobic treatment tanks provided in a wastewater treatment facility, and an aerobic treatment tank provided downstream of the anaerobic treatment tanks. A membrane module that divides the aerobic treatment tank into an activated sludge treatment unit and a filtration treatment unit, and the filtration treatment unit separates a mixed solution of the filtration treatment unit into a concentrated liquid and a filtrate; And an air diffuser for aeration that blows out air for the activated sludge treatment in the activated sludge treatment unit in the mixed solution, and the peripheral wall of the filtration treatment unit is the anaerobic treatment tank on the most upstream side. And a means for allowing the concentrated liquid in the filtration treatment section to naturally flow down from the position near the upper end of the peripheral wall toward the anaerobic treatment tank on the most upstream side, A device for treating wastewater containing nitrogen, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2061497A JPH0813359B2 (en) | 1990-03-13 | 1990-03-13 | Wastewater treatment equipment containing nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2061497A JPH0813359B2 (en) | 1990-03-13 | 1990-03-13 | Wastewater treatment equipment containing nitrogen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03262600A JPH03262600A (en) | 1991-11-22 |
| JPH0813359B2 true JPH0813359B2 (en) | 1996-02-14 |
Family
ID=13172794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2061497A Expired - Lifetime JPH0813359B2 (en) | 1990-03-13 | 1990-03-13 | Wastewater treatment equipment containing nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0813359B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022111166A (en) * | 2019-05-30 | 2022-07-29 | パナソニックＩｐマネジメント株式会社 | Method and device for analyzing stress of dynamic body |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6743362B1 (en) * | 2002-06-17 | 2004-06-01 | Enviroquip Inc. | Sewage treatment process |
| US20080272035A1 (en) * | 2003-12-24 | 2008-11-06 | Bushwater Holdings Pty Ltd | System for Water Treatment |
| JP4088630B2 (en) * | 2005-02-28 | 2008-05-21 | シャープ株式会社 | Wastewater treatment equipment |
| JP5217159B2 (en) * | 2006-12-21 | 2013-06-19 | 株式会社日立製作所 | Sewage treatment apparatus and method |
| JP2010253428A (en) * | 2009-04-28 | 2010-11-11 | Asahi Kasei Chemicals Corp | Wastewater treatment apparatus and wastewater treatment method |
| 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 |
| JP5260417B2 (en) * | 2009-06-19 | 2013-08-14 | 株式会社クボタ | Sewage treatment facilities and methods for renovating sewage treatment facilities |
| JP2012166142A (en) * | 2011-02-14 | 2012-09-06 | Hitachi Plant Technologies Ltd | System for membrane separation activated sludge and method for membrane separation activated sludge |
| JP5627757B2 (en) * | 2013-11-21 | 2014-11-19 | 株式会社クボタ | Air lift pump device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58124293U (en) * | 1982-02-17 | 1983-08-24 | 水道機工株式会社 | Fluidized bed sewage treatment equipment |
| JPS62155991A (en) * | 1985-12-27 | 1987-07-10 | Hitachi Plant Eng & Constr Co Ltd | Waste water treatment device |
-
1990
- 1990-03-13 JP JP2061497A patent/JPH0813359B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022111166A (en) * | 2019-05-30 | 2022-07-29 | パナソニックＩｐマネジメント株式会社 | Method and device for analyzing stress of dynamic body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03262600A (en) | 1991-11-22 |
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