JPH0671274A - Septic tank - Google Patents
Septic tankInfo
- Publication number
- JPH0671274A JPH0671274A JP24878292A JP24878292A JPH0671274A JP H0671274 A JPH0671274 A JP H0671274A JP 24878292 A JP24878292 A JP 24878292A JP 24878292 A JP24878292 A JP 24878292A JP H0671274 A JPH0671274 A JP H0671274A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- treatment chamber
- anaerobic
- liq
- aerobic
- 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.)
- Withdrawn
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は便所や洗面所、風呂、厨
房などからの廃水を浄化して放流するための浄化槽に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a septic tank for purifying and discharging waste water from a toilet, washroom, bath, kitchen or the like.
【０００２】[0002]
【従来の技術】便所から排出されるし尿、洗面所、風
呂、厨房などから排出される廃水を浄化する従来の浄化
槽として、特公昭６４−９０７４号公報及び特開平３−
９８６９７号公報に開示されるように、浄化槽本体内に
嫌気性処理室と好気性処理室を画成し、廃水中の硝酸性
窒素を嫌気性処理室で窒素ガスに分解し、アンモニア性
窒素を好気性処理室で硝酸性窒素に変換するようにして
いる。上述した従来の浄化槽にあっては、嫌気性処理室
と好気性処理室との間は隔壁の下部或いは上部若しくは
隔壁に形成した孔にて連通し、嫌気性処理が済んだ廃水
を好気性処理室に送り込むようにしている。2. Description of the Related Art As a conventional septic tank for purifying human waste discharged from toilets, toilets, baths, kitchens, etc., Japanese Patent Publication No. 64-9074 and Japanese Patent Laid-Open No. 3-9044.
As disclosed in Japanese Patent No. 98697, an anaerobic treatment chamber and an aerobic treatment chamber are defined in a septic tank main body, and nitrate nitrogen in waste water is decomposed into nitrogen gas in the anaerobic treatment chamber to remove ammoniacal nitrogen. It is converted to nitrate nitrogen in the aerobic treatment room. In the conventional septic tank described above, the anaerobic treatment chamber and the aerobic treatment chamber are communicated with each other through a hole formed in the lower part or the upper part of the partition wall or the partition wall to aerobically treat the wastewater after the anaerobic treatment. I try to send it to the room.
【０００３】[0003]
【発明が解決しようとする課題】上述したように従来の
浄化槽にあっては、浄化槽本体内に画成された嫌気性処
理室と好気性処理室は隔壁と本体内面との間の隙間また
は孔にて互いに連通しているため、嫌気性処理室の汚泥
が好気性処理室に流入する。そして、汚泥中には廃水中
の汚濁成分を分解する菌（微生物）が含まれており、嫌
気性処理室の汚泥が好気性処理室に流入すると、嫌気性
処理室の菌体濃度が減少し処理能力が低下してしまう。As described above, in the conventional septic tank, the anaerobic treatment chamber and the aerobic treatment chamber defined in the septic tank main body are the gaps or holes between the partition wall and the inner surface of the main body. Since they are in communication with each other, sludge in the anaerobic treatment chamber flows into the aerobic treatment chamber. Then, the sludge contains bacteria (microorganisms) that decompose pollutants in the wastewater, and when sludge in the anaerobic treatment chamber flows into the aerobic treatment chamber, the microbial cell concentration in the anaerobic treatment chamber decreases. The processing capacity will decrease.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決すべく本
発明は、膜分離装置によって浄化槽内に画成した上流側
の処理室の廃水を固液分離し、透過液を下流側の処理室
に供給し濃縮液を上流側の処理室に戻すようにした。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention separates the wastewater of the upstream processing chamber defined in the septic tank by solid-liquid separation by means of a membrane separation device, and the permeate to the downstream processing chamber. And the concentrated liquid was returned to the processing chamber on the upstream side.
【０００５】[0005]
【作用】嫌気性処理室で処理が終了した廃水はポンプに
よって膜分離装置の１次側に送られ、分離膜にて固液分
離され、透過液は下流側に送られ、濃縮液は嫌気性処理
室に戻されるので、嫌気性菌が好気性処理室に流れるこ
とがなく、嫌気性処理室の菌体濃度が高くなる。Operation The wastewater treated in the anaerobic treatment chamber is sent by the pump to the primary side of the membrane separation device, solid-liquid separated by the separation membrane, the permeate is sent to the downstream side, and the concentrated liquid is anaerobic. Since it is returned to the processing chamber, anaerobic bacteria do not flow into the aerobic processing chamber, and the bacterial cell concentration in the anaerobic processing chamber increases.
【０００６】[0006]
【実施例】以下に本発明の実施例を添付図面に基づいて
説明する。ここで、図１は本発明に係る浄化槽の縦断面
図であり、浄化槽はＦＲＰ等からなる本体１内を隔壁２
…によって上流側から順に、第１嫌気性処理室３、第２
嫌気性処理室４、第１好気性処理室５、第２好気性処理
室６、沈降分離室７及び消毒室８に画成している。Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a vertical cross-sectional view of a septic tank according to the present invention. The septic tank has a partition wall 2 inside a main body 1 made of FRP or the like.
The first anaerobic processing chamber 3 and the second
An anaerobic treatment chamber 4, a first aerobic treatment chamber 5, a second aerobic treatment chamber 6, a sedimentation separation chamber 7 and a disinfection chamber 8 are defined.
【０００７】第１嫌気性処理室３と第２嫌気性処理室４
とは隔壁２の下方部分を介して連通し、各嫌気性処理室
にはメタン菌や脱窒菌を含む嫌気性菌が付着した濾床９
を設け、第２嫌気性処理室４と第１好気性処理室５とは
膜分離装置１０を介してつながり、第１好気性処理室５
と第２好気性処理室６とは孔１１にて連通し、各好気性
処理室には硝化菌を含む好気性菌が付着した濾床１２を
設け、これら濾床１２の下方に曝気装置１３を配置して
いる。First anaerobic treatment chamber 3 and second anaerobic treatment chamber 4
And anaerobic bacteria including methane bacteria and denitrifying bacteria adhere to each anaerobic treatment chamber in the lower part of the partition wall 2 and the filter bed 9
Is provided, the second anaerobic treatment chamber 4 and the first aerobic treatment chamber 5 are connected via the membrane separation device 10, and the first aerobic treatment chamber 5 is connected.
And the second aerobic treatment chamber 6 are communicated with each other through a hole 11, a filter bed 12 to which aerobic bacteria including nitrifying bacteria are attached is provided in each aerobic treatment chamber, and an aeration device 13 is provided below these filter beds 12. Are arranged.
【０００８】第２好気性処理室６内の廃水はエアリフト
作用を利用した定量供給装置１４ａにて沈降分離室７の
中央に配置したセンターウェル１５内に供給される。セ
ンターウェル１５内にはロート状底部に溜まった汚泥を
第１嫌気性処理室３に戻す戻し管１６が挿通され、また
センターウェル１５の中間部には隔壁２を貫通したオー
バーフロー管１７が臨み、更にセンターウェル１５の上
部外側には上澄み液を採取する堰１８を設け、この堰１
８にて採取した上澄み液を管１９を介して管１９に取り
付けた消毒筒２０内の消毒液と接触させ消毒室８に落下
させ、更に消毒が終了した液を管２１を介して放出する
ようにしている。The wastewater in the second aerobic treatment chamber 6 is supplied into the center well 15 arranged in the center of the sedimentation separation chamber 7 by the constant amount supply device 14a utilizing the air lift action. A return pipe 16 for returning the sludge accumulated in the funnel-shaped bottom portion to the first anaerobic treatment chamber 3 is inserted into the center well 15, and an overflow pipe 17 penetrating the partition wall 2 faces the middle portion of the center well 15. Further, a weir 18 for collecting the supernatant is provided outside the upper part of the center well 15.
The supernatant liquid collected in 8 is brought into contact with the disinfecting liquid in the disinfecting cylinder 20 attached to the pipe 19 through the pipe 19 and dropped into the disinfection chamber 8, and the liquid after the disinfection is released through the pipe 21. I have to.
【０００９】一方、前記膜分離装置１０はポンプ２２、
膜モジュール２３、吸引管２４、供給管２５及び戻し管
２６を備えている。On the other hand, the membrane separation device 10 includes a pump 22,
It comprises a membrane module 23, a suction tube 24, a supply tube 25 and a return tube 26.
【００１０】以上において、第１嫌気性処理室３に供給
された廃水は第１嫌気性処理室３及び第２嫌気性処理室
４において、嫌気性菌の作用により有機物が分解され低
分子化する。窒素成分の一部又は全部はアンモニア性窒
素となり、炭素成分の一部はメタン菌等の作用によりメ
タンガスや炭酸ガスに分解される。この第２嫌気性処理
室４における処理が終了した廃水は膜分離装置１０を介
して定量づつ第１好気性処理室５に供給される。In the above, in the first anaerobic treatment chamber 3 and the second anaerobic treatment chamber 4, the wastewater supplied to the first anaerobic treatment chamber 3 is decomposed into organic matter by the action of anaerobic bacteria and is reduced in molecular weight. . Part or all of the nitrogen component becomes ammoniacal nitrogen, and part of the carbon component is decomposed into methane gas or carbon dioxide gas by the action of methane bacteria or the like. The wastewater which has been treated in the second anaerobic treatment chamber 4 is quantitatively supplied to the first aerobic treatment chamber 5 through the membrane separation device 10.
【００１１】即ち、第２嫌気性処理室４内の廃水はポン
プ２２の駆動で膜モジュール２３の一次側に送られ、分
離膜を透過した液は供給管２５を介して第１好気性処理
室５に供給され、分離膜を透過しない濃縮された液は戻
し管２６を介して第２嫌気性処理室４に戻される。第２
嫌気性処理室４に戻される濃縮液中には嫌気性菌が含ま
れているので、第２嫌気性処理室４の菌体濃度が高ま
る。That is, the wastewater in the second anaerobic treatment chamber 4 is sent to the primary side of the membrane module 23 by driving the pump 22, and the liquid that has passed through the separation membrane is fed through the supply pipe 25 into the first aerobic treatment chamber. The concentrated liquid that has been supplied to No. 5 and does not permeate the separation membrane is returned to the second anaerobic treatment chamber 4 via the return pipe 26. Second
Since the concentrated liquid returned to the anaerobic treatment chamber 4 contains anaerobic bacteria, the bacterial cell concentration in the second anaerobic treatment chamber 4 increases.
【００１２】次いで廃液は第１好気性処理室５及び第２
好気性処理室６において好気性菌の作用により有機物が
分解されると共に硝化菌の作用により廃液中のアンモニ
ア性窒素が硝酸性窒素に変換される。この硝酸性窒素は
返送水として、定量供給装置１４ｂ、戻し管１６を通っ
て第１嫌気性処理室３に定量返送される。第２好気性処
理室６での処理が終了した廃水は定量供給装置１４、セ
ンターウェル１５を介して沈降分離室７に供給され、こ
の沈降分離室７にて固液分離され、底部に溜まった汚泥
は戻し管１６にて第１嫌気性処理室３に送られ、上澄み
液は堰１８にて一定量採取され消毒室８に送られ、消毒
済みの液を管２１を介して放出する。Next, the waste liquid is used as the first aerobic treatment chamber 5 and the second aerobic treatment chamber.
In the aerobic treatment chamber 6, organic substances are decomposed by the action of aerobic bacteria and ammonia nitrogen in the waste liquid is converted into nitrate nitrogen by the action of nitrifying bacteria. This nitrate nitrogen is quantitatively returned as return water to the first anaerobic treatment chamber 3 through the constant amount supply device 14b and the return pipe 16. The wastewater that has been treated in the second aerobic treatment chamber 6 is supplied to the sedimentation separation chamber 7 via the quantitative supply device 14 and the center well 15, and is solid-liquid separated in the sedimentation separation chamber 7 and accumulated at the bottom. The sludge is sent to the first anaerobic treatment chamber 3 by the return pipe 16, a certain amount of the supernatant liquid is collected by the weir 18, sent to the disinfection chamber 8, and the disinfected liquid is discharged via the pipe 21.
【００１３】図２は別実施例を示す図であり、図１に示
した実施例と同一の部材については同一の番号を付して
説明を省略する。この実施例は前記沈降分離室７を省
き、その代わりに最終処理室３０に膜分離装置３１と定
量ボックス３２を設けてコンパクト化を図っている。FIG. 2 is a diagram showing another embodiment, and the same members as those in the embodiment shown in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the sedimentation separation chamber 7 is omitted, and instead, the final treatment chamber 30 is provided with a membrane separation device 31 and a quantification box 32 for compactness.
【００１４】即ち、第２好気性処理室６内の廃水はポン
プ３３で吸引されて膜分離装置３１に送られ、この膜分
離装置３１の透過液は配管３４を介して定量ボックス３
２に送られ、この定量ボックス３２から一定量の透過液
が消毒槽３５に供給され、一方余分な透過液は定量ボッ
クス３２から配管３６を介して第２好気性処理室６内に
戻される。That is, the waste water in the second aerobic treatment chamber 6 is sucked by the pump 33 and sent to the membrane separation device 31, and the permeated liquid of the membrane separation device 31 passes through the pipe 34 to the quantitative box 3.
2, a fixed amount of permeated liquid is supplied from the fixed amount box 32 to the disinfecting tank 35, while excess permeated liquid is returned from the fixed amount box 32 into the second aerobic treatment chamber 6 through the pipe 36.
【００１５】また、膜分離装置３１で濃縮された液は管
３７を介して第１嫌気性処理室３に戻される。この管３
７の途中にはエジェクタ３８を備えた分岐管を設け、エ
ジェクタ３８で空気を巻き込みながら濃縮液の一部を第
２好気性処理室６に戻すようにしている。このようにエ
ジェクタ３８を用いることで、第２好気性処理室６内の
曝気装置を省略することができる。The liquid concentrated in the membrane separator 31 is returned to the first anaerobic treatment chamber 3 via the pipe 37. This tube 3
A branch pipe provided with an ejector 38 is provided in the middle of 7, and a part of the concentrated liquid is returned to the second aerobic treatment chamber 6 while the ejector 38 entrains air. By using the ejector 38 in this way, the aeration device in the second aerobic treatment chamber 6 can be omitted.
【００１６】尚、実施例にあっては嫌気性処理室の廃水
を膜分離装置を介して好気性処理室に送り込むようにし
たが、図示のように嫌気性処理室を第１嫌気性処理室及
び第２嫌気性処理室に分割し、好気性処理室を第１好気
性処理室及び第２好気性処理室に分割した場合には、膜
分離装置を用いて第１嫌気性処理室の廃水を第２嫌気性
処理室に送り込んだり、第１好気性処理室の廃水を第２
好気性処理室に送り込むようにしてもよい。この場合に
は第１嫌気性処理室と第２嫌気性処理室、第１好気性処
理室と第２好気性処理室とを連通する隙間（孔）は閉じ
る必要がある。このようにすることで、分割された各処
理室内の菌体濃度を高めることができる。In the embodiment, the wastewater of the anaerobic treatment chamber is sent to the aerobic treatment chamber through the membrane separator, but as shown in the figure, the anaerobic treatment chamber is the first anaerobic treatment chamber. And the second anaerobic treatment chamber, and the aerobic treatment chamber is divided into the first aerobic treatment chamber and the second aerobic treatment chamber, the wastewater in the first anaerobic treatment chamber is divided into two by using a membrane separation device. Effluent from the first aerobic treatment chamber to the second anaerobic treatment chamber
It may be sent to the aerobic treatment chamber. In this case, it is necessary to close the gap (hole) that connects the first anaerobic treatment chamber and the second anaerobic treatment chamber and the first aerobic treatment chamber and the second aerobic treatment chamber. By doing so, the bacterial cell concentration in each divided processing chamber can be increased.
【００１７】[0017]
【発明の効果】以上に説明した如く本発明によれば、浄
化槽内に画成した上流側の処理室（嫌気性処理室）での
処理が終了した廃水を膜分離装置で固液分離し、透過液
を下流側の処理室（好気性処理室）に送るようにしたの
で、上流側の処理室から下流側の処理室への廃水の供給
量を一定にコントロールするのが容易で、しかも上流側
の処理室内の菌が下流側の処理室へ流出するのを防止で
きる。また、膜分離装置の濃縮液を上流側の処理室に戻
すようにしたので上流側の処理室の菌体濃度を高めるこ
とができる。As described above, according to the present invention, the waste water which has been treated in the upstream treatment chamber (anaerobic treatment chamber) defined in the septic tank is solid-liquid separated by the membrane separation device, Since the permeate is sent to the downstream processing chamber (aerobic processing chamber), it is easy to control the amount of wastewater supplied from the upstream processing chamber to the downstream processing chamber at a constant level, and the upstream It is possible to prevent bacteria in the processing chamber on the side from flowing out to the processing chamber on the downstream side. Further, since the concentrated liquid of the membrane separation device is returned to the upstream processing chamber, the bacterial cell concentration in the upstream processing chamber can be increased.
【図１】本発明に係る浄化槽の縦断面図FIG. 1 is a vertical sectional view of a septic tank according to the present invention.
【図２】別実施例に係る浄化槽の縦断面図FIG. 2 is a vertical sectional view of a septic tank according to another embodiment.
１…浄化槽本体、３，４…嫌気性処理室、５，６…好気
性処理室、７…沈降分離室、８…消毒室、１０…膜分離
装置、２２…ポンプ、２３…膜モジュール。DESCRIPTION OF SYMBOLS 1 ... Septic tank main body, 3, 4 ... Anaerobic treatment chamber, 5, 6 ... Aerobic treatment chamber, 7 ... Sedimentation separation chamber, 8 ... Disinfection chamber, 10 ... Membrane separation device, 22 ... Pump, 23 ... Membrane module.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 下寺 健一 福岡県北九州市小倉北区中島２丁目１番１ 号 東陶機器株式会社内 (72)発明者 三浦 勲 福岡県北九州市小倉北区中島２丁目１番１ 号 東陶機器株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichi Shimodera Kenichi Shimodera 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture Totoki Kikai Co., Ltd. (72) Isao Miura, Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka 2-1, 1-1 Totoki Equipment Co., Ltd.
Claims (2)
複数の処理室を浄化槽本体内に画成した浄化槽におい
て、この浄化槽は上流側の処理室の廃水を固液分離して
透過液を下流側の処理室に供給し濃縮液を上流側の処理
室に戻す膜分離装置を備えていることを特徴とする浄化
槽。1. A septic tank in which a plurality of treatment chambers for decomposing components in wastewater by the action of microorganisms are defined in a septic tank main body. A septic tank comprising a membrane separation device that supplies the concentrated liquid to the processing chamber on the downstream side and returns the concentrated liquid to the processing chamber on the upstream side.
を好気性処理室へ供給するものであることを特徴とする
請求項１に記載の浄化槽。2. The septic tank according to claim 1, wherein the membrane separation device supplies wastewater in the anaerobic treatment chamber to the aerobic treatment chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24878292A JPH0671274A (en) | 1992-08-25 | 1992-08-25 | Septic tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24878292A JPH0671274A (en) | 1992-08-25 | 1992-08-25 | Septic tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0671274A true JPH0671274A (en) | 1994-03-15 |
Family
ID=17183317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24878292A Withdrawn JPH0671274A (en) | 1992-08-25 | 1992-08-25 | Septic tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0671274A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100321346B1 (en) * | 1999-02-05 | 2002-03-18 | 유철진 | Nutrient removal system by using fixed biofilm |
| KR100459331B1 (en) * | 2002-12-09 | 2004-12-03 | 대명엔텍(주) | Sweage disposal equipment being highly processing type with aspirated diffusers for recirculating sludge using by air stone |
| US6863817B2 (en) | 2002-12-05 | 2005-03-08 | Zenon Environmental Inc. | Membrane bioreactor, process and aerator |
-
1992
- 1992-08-25 JP JP24878292A patent/JPH0671274A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100321346B1 (en) * | 1999-02-05 | 2002-03-18 | 유철진 | Nutrient removal system by using fixed biofilm |
| US6863817B2 (en) | 2002-12-05 | 2005-03-08 | Zenon Environmental Inc. | Membrane bioreactor, process and aerator |
| US7022236B2 (en) | 2002-12-05 | 2006-04-04 | Zenon Environmental Inc. | Membrane bioreactor, process and aerator |
| KR100459331B1 (en) * | 2002-12-09 | 2004-12-03 | 대명엔텍(주) | Sweage disposal equipment being highly processing type with aspirated diffusers for recirculating sludge using by air stone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19991102 |