JPH02194894A - Sewage treatment apparatus - Google Patents
Sewage treatment apparatusInfo
- Publication number
- JPH02194894A JPH02194894A JP1015760A JP1576089A JPH02194894A JP H02194894 A JPH02194894 A JP H02194894A JP 1015760 A JP1015760 A JP 1015760A JP 1576089 A JP1576089 A JP 1576089A JP H02194894 A JPH02194894 A JP H02194894A
- Authority
- JP
- Japan
- Prior art keywords
- draft tube
- water
- aeration tank
- membrane
- membrane 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.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000005273 aeration Methods 0.000 claims abstract description 26
- 238000005374 membrane filtration Methods 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000012528 membrane Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 13
- 238000000889 atomisation Methods 0.000 claims 1
- 238000007654 immersion Methods 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 238000009792 diffusion process Methods 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 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)
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的］
（産業上の利用分野）
本発明は、好気性生物による都市下水や近業廃水に浄化
処理を施す汚水処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a sewage treatment device that performs purification treatment on urban sewage and industrial wastewater using aerobic organisms.
（従来の技術）
活性汚泥法や接触ばっき気法などの好気性の汚水処理法
においては、反応槽の後に沈殿槽を設けて固液の分離を
行ない、清澄な処理水がｌｉられるようにされている。(Prior art) In aerobic wastewater treatment methods such as activated sludge method and contact aeration method, a sedimentation tank is installed after the reaction tank to separate solid and liquid, so that clear treated water can be liquefied. has been done.
近年、沈殿槽にかえて精密−過や限外−過などの高分子
膜を用いた膜濾過装置を用いて、非常に清澄度の高い処
理水を確実に得られる処理方式％式％
（発明が解決しようとする課題）
上述のような膜濾過装置を用いる処理方式の主要な欠点
の一つは、分離に要するエネルギーが大きいことである
。すなわち、分離膜の表面に浮遊物やコイロドなどの粒
子が蓄積してｔ過速度が著しく低下することを防ぐため
には、常に分離膜表面に非常に大きな流速で該分離液を
流し続けながら濾過しなければならず、結果として多大
のエネルギー消費をもたら丁という問題がある。In recent years, in place of settling tanks, membrane filtration devices using polymer membranes such as Precision-filtration and Ultra-filtration have been developed to reliably obtain treated water with extremely high purity. One of the major drawbacks of the treatment method using a membrane filtration device as described above is that the energy required for separation is large. In other words, in order to prevent particles such as suspended matter and colloids from accumulating on the surface of the separation membrane and causing a significant decrease in the t-pass rate, the separation liquid should be continuously flowed at a very high flow rate over the surface of the separation membrane during filtration. There is a problem that this results in a large amount of energy consumption.
本発明の目的は、上述の問題点に鑑み、膜−過に必要な
エネルギーを少くし膜濾過によって清澄度の高い処理水
を得る汚水処理装置を提供するものである。SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a sewage treatment apparatus that reduces the energy required for membrane filtration and obtains treated water with high clarity through membrane filtration.
（課題を解決するための手段）
本発明の汚水処理装置は、接触ばっき気槽と、この接触
ばっき気槽の水面下に設（プられエアリフトにより被処
理水を循環させるドラフトチューブと、このドラフトチ
ューブ内に挿入された膜−過装置と、この膜濾過装置で
濾過膜によって濾過された処理水を前記接触ばっき気槽
外へ導出する処理水管とよりなるものである。(Means for Solving the Problems) The sewage treatment apparatus of the present invention includes a contact aeration tank, a draft tube installed under the water surface of the contact aeration tank and for circulating the water to be treated by an air lift. It consists of a membrane filtration device inserted into this draft tube, and a treated water pipe that leads out the treated water filtered by the filtration membrane in this membrane filtration device to the outside of the contact aeration tank.
さらに本発明の汚水処理装置は、接触ばつき気槽と、こ
の接触ばっき気槽内に設けられ上端を上方に突出したド
ラフトチューブと、前記接触ばっき気槽とドラフトチュ
ーブの上端近くとを連通し途中に液ポンプを有１−る循
環管と、この循環管の途中に挿入された膜濾過装置と、
この膜濾過装置で濾過膜により濾過された処理水を導出
する処理水管とよりなるものである。Furthermore, the sewage treatment apparatus of the present invention includes a contact aeration tank, a draft tube provided in the contact aeration tank and having an upper end protruding upward, and a portion near the upper end of the contact aeration tank and the draft tube. A circulation pipe having a liquid pump in the middle of communication, a membrane filtration device inserted in the middle of this circulation pipe,
This membrane filtration device is made up of a treated water pipe from which the treated water filtered by the filtration membrane is discharged.
（作用）
本発明の汚水処理装置は、ドラフトチューブを流れる被
処理水の高速流が膜「過装置の膜面を流通し膜面を洗浄
するとともに、膜を透過した処理水は処理水管より接触
ばっき気槽外に引出される。(Function) In the sewage treatment equipment of the present invention, the high-speed flow of the water to be treated flowing through the draft tube flows through the membrane surface of the membrane filtering device to clean the membrane surface, and the treated water that has passed through the membrane comes into contact with the water from the treated water pipe. It is pulled out of the aeration tank.
また、ドラフトチューブに連結した循環管中を流れる被
処理水の高速流が膜濾過装置の膜面を流通して膜面を洗
浄するとともに、膜を透過した処理水は接触ばっき気槽
外へ引出される。In addition, the high-speed flow of the water to be treated flowing through the circulation pipe connected to the draft tube flows over the membrane surface of the membrane filtration device and cleans the membrane surface, and the treated water that has passed through the membrane flows out of the contact aeration tank. be drawn out.
（実施例） 本発明の一実施例を第１図によって説明する。(Example) An embodiment of the present invention will be described with reference to FIG.
１は接触ばつき気槽で、中心に上下を被処理水中で開口
させたドラフトチューブ２が直立され、このドラフトチ
ューブ２の周囲に接触ρ材を充１眞した浸漬Ｐ床３が形
成されている。Reference numeral 1 designates a contact aeration tank, in which a draft tube 2 with its upper and lower ends open in the water to be treated is erected in the center, and an immersed P bed 3 filled with a contact ρ material is formed around the draft tube 2. There is.
このドラフトチューブ２内には空気が送り込まれる散気
管４を連通させた散気頭５が挿入され、ドラフトチュー
ブ２内の散気頭５の下方にはＩＩＩ濾過装置６が挿入さ
れている。A diffuser head 5 communicating with a diffuser tube 4 through which air is sent is inserted into the draft tube 2, and a III filtration device 6 is inserted below the diffuser head 5 within the draft tube 2.
また前記膜−過装置６は浸透膜よりなる中空密閉体で処
理水管７が連通され、処理水管７はドラフトチューブ２
より引出されて接触ばっき気槽１の外部に導出されてい
る。The membrane filtration device 6 is a hollow sealed body made of a permeable membrane and is connected to a treated water pipe 7, which is connected to the draft tube 2.
It is pulled out from the contact aeration tank 1 and led out.
次にこの実施例の作用を説明する。Next, the operation of this embodiment will be explained.
接触ばっき気槽１に被処理水を導入し、ドラフトチュー
ブ２中に散気管４より空気を導入して散気すると、被処
理水はニアリフ１−作用によりドラフトデユープ２中で
上向流が生じ、ドラフトチューブ２の上端より流出して
浸漬Ｐ床３に流入し浸漬Ｐ床３を下降流して接触酸化さ
れ再びドラフトチューブ２の下端より上昇して、接触ば
っき気槽１内を接触酸化されながら循環する。When the water to be treated is introduced into the contact aeration tank 1 and air is introduced into the draft tube 2 from the aeration pipe 4 for aeration, the water to be treated causes an upward flow in the draft duplex 2 due to the action of the near lift 1. , flows out from the upper end of the draft tube 2, flows into the immersed P bed 3, flows down the immersed P bed 3, is catalytically oxidized, rises again from the lower end of the draft tube 2, and is catalytically oxidized in the catalytic aeration tank 1. Circulate while doing so.
またドラフトチューブ２内のＩ！−過装置６は表面を高
速で流通する被処理水によって常に洗浄され表面に浮遊
物やコロイド等の粒子が耐着することがない。したがっ
てＦｉｇ！の濾過作用が有効に進行する。膜ＦＶＡ装置
６内に浸透した清澄な処理水は、処理水管７によって外
部へ排出される。Also, I in draft tube 2! - The filtration device 6 is constantly cleaned by the water to be treated flowing over the surface at high speed, so that particles such as suspended matter and colloids do not adhere to the surface. Therefore, Fig! The filtration action proceeds effectively. The clear treated water that has permeated into the membrane FVA device 6 is discharged to the outside through the treated water pipe 7.
次に他の実施例を第２図によって説明する。Next, another embodiment will be explained with reference to FIG.
ドラフトチューブ２の上端は接触ばつき気槽１より上方
に突出され、この接触ばっき気槽１の浸ｍＰ床３の上方
の水面下より導出された途中に液ポンプ８を為する循環
管９が前記接触はっき気槽１よりも上方に突出したドラ
フトチューブ２に連通され、前記液ポンプ８とドラフト
チューブ２間の循環管９の途中の径大部１０にＦＪ）濾
過装置６が挿入され、この膜濾過装置６より処理水管７
が導出されている。The upper end of the draft tube 2 is projected upward from the contact aeration tank 1, and a circulation pipe 9 forming a liquid pump 8 is led out from below the water surface above the immersion mP bed 3 of the contact aeration tank 1. is communicated with the draft tube 2 which protrudes above the contact pneumatic tank 1, and the FJ) filtration device 6 is inserted into the large diameter portion 10 in the middle of the circulation pipe 9 between the liquid pump 8 and the draft tube 2, Processed water pipe 7 from this membrane filtration device 6
has been derived.
さらにドラフトチューブ２の上端開口部からは軸方向に
空気吸入管１１が挿入されて循環管９の間口部１２より
も梢下方でノズル状に開されている。Further, an air suction pipe 11 is inserted in the axial direction from the upper end opening of the draft tube 2, and is opened in a nozzle shape below the frontage 12 of the circulation pipe 9.
次にこの実施例の作用を説明する。Next, the operation of this embodiment will be explained.
接触ばっき気槽１に導入された被処理水は、浸ｍＦ床３
の上部から液ポンプ８で汲み上げられ循環管９によって
ドラフトチューブ２の上部に供給され、ドラフトチュー
ブ２を流下して浸漬−床３の下部に吐出され、浸１Ｉｆ
−床３を上界して接触酸化され再び浸漬Ｐ床３の上方よ
り液ポンプ８によって汲み上げられドラフトチューブ２
に導入されて循環する。The water to be treated introduced into the contact aeration tank 1 is transferred to the immersion mF bed 3.
The liquid is pumped up from the upper part of the immersion bed 3 by a pump 8, supplied to the upper part of the draft tube 2 by a circulation pipe 9, flows down the draft tube 2, and is discharged to the lower part of the immersion bed 3.
- The liquid is oxidized by contact over the bed 3 and is pumped up from above the immersed P bed 3 by the draft tube 8.
introduced and circulated.
ドラフトチューブ２の上部に挿入された空気吸入管１１
のノズルにはドラフトチューブ２を下降する水流によっ
て負圧が生じ大気を吸入してドラフトチューブ２の水中
に強制的に空気を供給する。Air suction pipe 11 inserted into the upper part of draft tube 2
Negative pressure is generated in the nozzle by the water flow descending through the draft tube 2, and atmospheric air is sucked in to forcibly supply air into the water in the draft tube 2.
また膜−過装置６内に浸透圧によって浸透した清澄な処
理水は処理水管７によって槽外に導出される。さらに膜
−過装置６は被処理水が液ポンプ８ｒ高速で送られる循
環管９の径大部１０中に位置するため浸透膜の外面が洗
い流され浮遊物やコロイドの耐着が防止される。Further, the clear treated water that has permeated into the membrane filtration device 6 due to osmotic pressure is led out of the tank through the treated water pipe 7. Further, since the membrane filtration device 6 is located in the large-diameter portion 10 of the circulation pipe 9 through which the water to be treated is fed at high speed by the liquid pump 8r, the outer surface of the permeable membrane is washed away and adhesion of suspended matter and colloids is prevented.
次に第３図は膜−過装＠６の他の実施例を示し、被処理
液が強制的に流通される循環管９の途中に膜濾過装置６
の両端を連通させて挿入して、この膜濾過装置６を密封
包被した外套体１３より処理水管７が導出されている。Next, FIG. 3 shows another embodiment of the membrane filtration device @6, in which a membrane filtration device 6 is installed in the middle of the circulation pipe 9 through which the liquid to be treated is forced to flow.
A treated water pipe 7 is led out from a jacket body 13 which is inserted with both ends communicating with each other and which seals and covers the membrane filtration device 6.
この第３図に示す実施例によるときは、被処理水が膜′
濾過装置６内を流通し、浸透濾過された処理液が膜濾過
装置６の外面に浸出し、外套体１３内に溜った処理水が
処理水管７によって導出される。According to the embodiment shown in FIG. 3, the water to be treated is
The treated liquid flowing through the filtration device 6 and subjected to osmosis filtration leaks out to the outer surface of the membrane filtration device 6, and the treated water accumulated in the outer mantle 13 is led out through the treated water pipe 7.
本発明によれば被処理水をエアリフトにより強制的に流
通させるドラフトチューブや液ポンプで送水される循環
管の途中に挿入された膜−過装置は、常時速度を有する
流水中に曝されているから、流水との接触面は洗い流さ
れ濾過膜の表面に浮遊物やコロイドが耐着するのを防止
され、−渦効果を高めることができる。またＦＪ 濾過
装置洗浄のために高速分離水を流すためのエネルニ１ニ
ーを別に必要としないから経済上有利である。According to the present invention, the membrane filtration device inserted in the middle of the draft tube through which the water to be treated is forced to flow by an air lift or the circulation pipe through which water is fed by a liquid pump is constantly exposed to flowing water at a constant velocity. Therefore, the surface that comes into contact with running water is washed away, preventing suspended matter and colloids from adhering to the surface of the filtration membrane, and increasing the -vortex effect. In addition, it is economically advantageous because there is no need for a separate energy supply for flowing high-speed separated water for cleaning the FJ filtration device.
第１図、第２図は夫々本発明の異る実施例を示す汚水処
Ｔｇ！装百の縦断面図、第３図はＩ＋！；！ ？ｆ１過
装防の他の実施例を示す循環管の一部の縦断面図であ◆
。
１・・接触ばっき気槽、２・・ドラフトデユープ、６・
・膜−過装置、７・・処理水管、８・・液ポンプ、９・
・循１ｍ管。
平成元年１月２５日
発 明 者
北
尾
高
嶺
同
鈴
木
健
介
同
花
浦
残
雄Fig. 1 and Fig. 2 respectively show different embodiments of the present invention. Figure 3 is a vertical cross-sectional view of Sohaku! ;! ? It is a vertical cross-sectional view of a part of the circulation pipe showing another example of f1 overloading prevention◆
. 1. Contact aeration tank, 2. Draft duplex, 6.
・Membrane filtration device, 7.・Treatment water pipe, 8.・Liquid pump, 9.
・Circulation 1m pipe. Invented on January 25, 1989 Invented by Takane Kitao, Kensuke Suzuki, and Zano Hanaura
Claims (2)
に設けられエアリフトにより被処理水を循環させるドラ
フトチューブと、このドラフトチューブ内に挿入された
膜濾過装置と、この膜濾過装置で濾過膜によって濾過さ
れた処理水を前記接触ばつき気槽外へ導出する処理水管
とよりなることを特徴とする汚水処理装置。(1) A contact aeration tank, a draft tube that is installed under the water surface of the contact aeration tank and circulates the water to be treated using an air lift, a membrane filtration device inserted into this draft tube, and this membrane filtration device. A sewage treatment device comprising a treated water pipe that leads treated water filtered by a filtration membrane to the outside of the contact aeration tank.
られ上端を上方に突出したドラフトチューブと、前記接
触ばっき気槽とドラフトチューブの上端近くとを連通し
途中に液ポンプを有する循環管と、この循環管の途中に
挿入された膜濾過装置と、この膜濾過装置で濾過膜によ
り濾過された処理水を導出する処理水管とよりなること
を特徴とする汚水処理装置。(2) A contact aeration tank, a draft tube provided in the contact atomization tank whose upper end protrudes upward, and a liquid pump that connects the contact aeration tank and near the upper end of the draft tube. A sewage treatment device comprising: a circulation pipe having a filtration pipe; a membrane filtration device inserted in the middle of the circulation pipe; and a treated water pipe that discharges treated water filtered by the filtration membrane in the membrane filtration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1015760A JPH0683831B2 (en) | 1989-01-25 | 1989-01-25 | Sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1015760A JPH0683831B2 (en) | 1989-01-25 | 1989-01-25 | Sewage treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02194894A true JPH02194894A (en) | 1990-08-01 |
| JPH0683831B2 JPH0683831B2 (en) | 1994-10-26 |
Family
ID=11897739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1015760A Expired - Lifetime JPH0683831B2 (en) | 1989-01-25 | 1989-01-25 | Sewage treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0683831B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5656169A (en) * | 1996-08-06 | 1997-08-12 | Uniroyal Chemical Ltd./Ltee | Biodegradation process for de-toxifying liquid streams |
| JP2003024959A (en) * | 2001-07-17 | 2003-01-28 | Fuji Clean Kogyo Kk | Method and apparatus for treating wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840971A (en) * | 1971-10-01 | 1973-06-15 | ||
| JPS61120694A (en) * | 1984-11-19 | 1986-06-07 | Mitsubishi Kakoki Kaisha Ltd | Treatment of organic waste water |
| JPS61129094A (en) * | 1984-11-26 | 1986-06-17 | Nitto Electric Ind Co Ltd | Apparatus for treating membrane |
| JPS6268599A (en) * | 1985-09-19 | 1987-03-28 | Kurita Water Ind Ltd | Apparatus for treating sewage |
-
1989
- 1989-01-25 JP JP1015760A patent/JPH0683831B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840971A (en) * | 1971-10-01 | 1973-06-15 | ||
| JPS61120694A (en) * | 1984-11-19 | 1986-06-07 | Mitsubishi Kakoki Kaisha Ltd | Treatment of organic waste water |
| JPS61129094A (en) * | 1984-11-26 | 1986-06-17 | Nitto Electric Ind Co Ltd | Apparatus for treating membrane |
| JPS6268599A (en) * | 1985-09-19 | 1987-03-28 | Kurita Water Ind Ltd | Apparatus for treating sewage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5656169A (en) * | 1996-08-06 | 1997-08-12 | Uniroyal Chemical Ltd./Ltee | Biodegradation process for de-toxifying liquid streams |
| JP2003024959A (en) * | 2001-07-17 | 2003-01-28 | Fuji Clean Kogyo Kk | Method and apparatus for treating wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0683831B2 (en) | 1994-10-26 |
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