JPH04367788A - Purification tank - Google Patents
Purification tankInfo
- Publication number
- JPH04367788A JPH04367788A JP14306991A JP14306991A JPH04367788A JP H04367788 A JPH04367788 A JP H04367788A JP 14306991 A JP14306991 A JP 14306991A JP 14306991 A JP14306991 A JP 14306991A JP H04367788 A JPH04367788 A JP H04367788A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- treated water
- filter bed
- contact aeration
- chamber
- 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.)
- Pending
Links
- 238000000746 purification Methods 0.000 title abstract 4
- 238000005273 aeration Methods 0.000 claims abstract description 35
- 238000005188 flotation Methods 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 19
- 239000010865 sewage Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 36
- 239000010802 sludge Substances 0.000 abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052799 carbon Inorganic materials 0.000 abstract description 13
- 238000005204 segregation Methods 0.000 abstract 3
- 238000001914 filtration Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 7
- 239000005416 organic matter Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Treatment Of Biological Wastes In General (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】本発明は、汚水流入側から浮上分
離槽、嫌気濾床槽、接触ばっ気槽をこの順に装備して構
成された浄化槽に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a septic tank equipped with a flotation tank, an anaerobic filter bed tank, and a contact aeration tank in this order from the sewage inflow side.
【０００２】0002
【従来の技術】この種の浄化槽の構成が図３に示されて
いる。浄化槽は、浮上分離槽、嫌気濾床槽（上流側の嫌
気濾床槽は、沈殿分離槽としての役割も果たす。）、接
触ばっ気槽を備えており、トイレ等から発生する汚水の
他、所謂、厨房排水といった油分等を含有した汚水の処
理にも使用される。ここで、浮上分離槽は、汚水に含有
される油分等を浮き上がらせて分離するものであり、嫌
気濾床槽における処理は浮遊縣濁物の除去、嫌気分解で
あるとともに、脱窒処理も行われる。一方、接触ばっ気
槽におけるそれは、有機物に対する好気分解であるとと
もに、アンモニアに対する硝化処理である。そして、前
述の浮上分離槽の下部には、貯留汚泥が堆積する。また
、このタイプの浄化槽においては、通常の汚水の流入が
起こっている場合、汚水の流入に従って上流側の槽から
下流側の槽へ処理水が移動し、その処理が進行している
。さらに、従来浮上分離槽にはエアーによる油分等の分
離を行う散気管が設けられていたが、この散気管はこの
槽のみのために作動するものであり、下流側への汚水の
移流等に寄与するものではなかった。2. Description of the Related Art The structure of this type of septic tank is shown in FIG. The septic tank is equipped with a flotation separation tank, an anaerobic filter bed tank (the upstream anaerobic filter bed tank also serves as a sedimentation separation tank), and a contact aeration tank. It is also used to treat sewage containing oil, such as so-called kitchen wastewater. Here, the flotation separation tank floats and separates oil contained in wastewater, and the treatment in the anaerobic filter bed tank is to remove suspended solids, anaerobically decompose it, and also perform denitrification treatment. be exposed. On the other hand, in a contact aeration tank, organic matter is aerobically decomposed and ammonia is nitrified. Then, the stored sludge is deposited in the lower part of the flotation tank mentioned above. Furthermore, in this type of septic tank, when normal sewage is flowing in, the treated water moves from the upstream tank to the downstream tank as the sewage flows in, and the treatment progresses. Furthermore, flotation separation tanks have conventionally been equipped with air diffusers that separate oil and other substances using air, but these air diffusers operate only for this tank, and are not effective for advection of sewage to the downstream side. It wasn't contributing.
【０００３】0003
【発明が解決しようとする課題】上記従来技術において
は、例えば汚水の流入が減少した場合に下記のような問
題が発生した。即ち、汚水の流入が減少した場合、各槽
（浮上分離槽、嫌気濾床槽、接触ばっ気槽）内に於ける
処理水の停滞が起こり、各槽固有の処理は進行するもの
の、ある程度処理が進行した段階で、嫌気濾床槽、接触
ばっ気槽に於いては特に、菌体の活動に必要な基質が減
少し処理能力が低下する。この場合、菌体自体の自己分
解も起こる。さらに、接触ばっ気槽に於けるアンモニア
の硝化により、浄化槽全体で脱窒をおこなうことが必要
な状態となっているにも係わらず、この処理に必要な脱
窒用炭素源が不足し、脱窒処理が充分に進行しえない。
一方、前述の浮上分離槽の下部に残留している貯留汚泥
には、大量の炭素源が手つかずのまま貯留されている。
そして、従来の浮上分離槽においては、図３に示すよう
にばっ気装置を設けている場合においても、浮上分離槽
内での処理水の混合が起こるのみで、貯留汚泥が浄化槽
全体で炭素源として利用されることはなかった。Problems to be Solved by the Invention In the above-mentioned prior art, the following problems occurred when, for example, the inflow of sewage decreased. In other words, when the inflow of sewage decreases, the treated water in each tank (flotation tank, anaerobic filter bed tank, contact aeration tank) will stagnate, and although the treatment specific to each tank will progress, the treatment will be delayed to some extent. At the advanced stage, the substrate required for bacterial activity decreases, particularly in anaerobic filter beds and contact aeration tanks, resulting in a decline in treatment capacity. In this case, self-decomposition of the bacterial cells themselves also occurs. Furthermore, although the nitrification of ammonia in the catalytic aeration tank makes it necessary to perform denitrification in the entire septic tank, there is a shortage of carbon sources for denitrification necessary for this treatment. Nitrogen treatment cannot proceed sufficiently. On the other hand, a large amount of carbon sources are stored untouched in the stored sludge remaining at the bottom of the aforementioned flotation tank. In a conventional flotation tank, even if an aeration device is installed as shown in Figure 3, the treated water only mixes within the flotation tank, and the stored sludge becomes a carbon source throughout the septic tank. It was never used as.
【０００４】そこで本発明の目的は、浮上分離槽に溜ま
る貯留汚泥に含有される炭素源を有効に処理水の処理に
利用することが可能で、浄化槽全体としてその処理能力
を向上させることができる浄化槽を得ることである。[0004] Therefore, an object of the present invention is to make it possible to effectively utilize the carbon source contained in the stored sludge accumulated in the flotation separation tank for the treatment of treated water, and to improve the treatment capacity of the septic tank as a whole. It is to get a septic tank.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
の本発明による浄化槽の特徴構成は、接触ばっ気槽内の
処理水を浮上分離槽の下部に返送する返送手段を備えて
いることにあり、その作用・効果は次の通りである。[Means for Solving the Problems] A characteristic configuration of the septic tank according to the present invention to achieve this object is that it is equipped with a return means for returning the treated water in the contact aeration tank to the lower part of the flotation separation tank. There is, and its actions and effects are as follows.
【０００６】[0006]
【作用】本願の構成を採用すると、返送手段により接触
ばっ気槽内の処理水が、浮上分離槽の下部に返送される
のであるが、このとき、この処理水には接触ばっ気槽内
に配設される接触材から剥離した剥離汚泥と硝化液が含
まれる。さらにこの返送により、浮上分離槽においては
流入水の流入に伴って、貯留汚泥が巻き上げられ、汚泥
が可溶化した炭素源が隣接する嫌気濾床槽に流れ込み補
給されることとなる。さらに、各槽に渡って処理水の移
動（炭素源としての剥離汚泥、貯留汚泥の移動）が起こ
る。このようにして、各槽で新たな炭素源をもとに有機
物の分解処理が行われる。また、浄化槽内に於ける処理
水の循環に伴って、炭素源を含有する貯留汚泥、剥離汚
泥の移動供給が起こるとともに、接触ばっ気槽内の硝化
液がその脱窒処理に適する嫌気濾床槽内へ移動し、その
処理が進行する。従って、本願の構成においては十分な
炭素源を利用して、浄化槽内の処理を進めることが可能
となる。[Operation] When the configuration of the present application is adopted, the treated water in the contact aeration tank is returned to the lower part of the flotation tank by the return means. Contains peeled sludge and nitrification liquid peeled off from the contact material installed. Furthermore, due to this return, the stored sludge is rolled up in the flotation separation tank with the inflow of inflow water, and the carbon source in which the sludge is solubilized flows into the adjacent anaerobic filter bed tank and is replenished. Furthermore, movement of treated water (movement of stripped sludge and stored sludge as a carbon source) occurs across each tank. In this way, organic matter is decomposed in each tank using a new carbon source. In addition, as the treated water circulates in the septic tank, the stored sludge and stripped sludge containing carbon sources are moved and supplied, and the nitrification liquid in the contact aeration tank is transferred to an anaerobic filter bed suitable for denitrification treatment. It moves into the tank and its processing progresses. Therefore, in the configuration of the present application, it is possible to proceed with the treatment in the septic tank by utilizing a sufficient carbon source.
【０００７】[0007]
【発明の効果】結果、浮上分離槽に溜まる貯留汚泥に含
有される炭素源を有効に処理水の処理に利用することが
可能となり、浄化槽全体でその処理能力が向上した浄化
槽が得られた。[Effects of the Invention] As a result, it has become possible to effectively utilize the carbon source contained in the stored sludge accumulated in the flotation tank for the treatment of treated water, and a septic tank with improved overall treatment capacity has been obtained.
【０００８】[0008]
【実施例】以下、本願の浄化槽１の構成を図面に基づい
て、先ず説明する。浄化槽１が図１に示されている。概
略構成を説明すると、この浄化槽１は、上流側から、浮
上分離槽Ｍ、嫌気濾床槽第１室Ｎ１、嫌気濾床槽第２室
Ｎ２、接触ばっ気槽第１室Ｅ１、接触ばっ気槽第２室Ｅ
２、沈殿槽Ｐをこの順に備えて構成されている。以下、
各槽Ｍ，Ｎ１、Ｎ２、Ｅ１、Ｅ２、Ｐについてさらに詳
細に説明する。浮上分離槽Ｍは、流入口２ａから流入す
る処理水中の粗大浮遊物、油分を小さな気泡によって浮
上分離する槽であり、この目的で後述するばっ気装置と
して働く、エジェクター３を備えて構成されている。こ
のエジェクター３の吐出口３ａは、浮上分離槽Ｍの下部
域に配設されており、この部位に従来貯留汚泥ｍが埋積
していた。この浮上分離槽Ｍにおいては、前述のエジェ
クター３により供給される気泡により粗大浮遊物、油分
が浮上し、槽内の液層表面ｍｓ側に分離されて溜まる。
さらに、前記気泡とともに供給される接触ばっ気槽第２
室Ｅ２からの返送水によりこの層内が混合、攪拌される
。次に、嫌気濾床槽第１室Ｎ１は、浮上分離槽Ｍから流
入する処理水を沈殿分離するとともに、この槽内Ｎ１で
嫌気分解処理をおこなう構造とされている。嫌気濾床槽
第２室Ｎ２においても同様に嫌気分解処理がおこなわれ
る。このため嫌気濾床槽第１室Ｎ１と嫌気濾床槽第２室
Ｎ２には、処理水中の有機物の一部を嫌気分解する嫌気
性微生物を生息させ、その生物膜を定着させるために、
濾床Ｆ１、Ｆ２が備えられている。ここで、嫌気濾床槽
第１室Ｎ１の濾床Ｆ１は、目詰まりしない粗い格子間隔
のハニカムチューブ状濾材メッシュで形成され、嫌気濾
床槽第２室Ｎ２の濾床Ｆ２は篭状の濾材を多数充填して
形成されるとともに、前記嫌気濾床槽第１室Ｎ１の濾床
Ｆ１は嫌気濾床槽第２室Ｎ２の濾床Ｆ２よりも粗に構成
されている。次に、接触ばっ気槽第１、第２室Ｅ１、Ｅ
２について説明する。これらの接触ばっ気槽Ｅ１、Ｅ２
には、被処理水中の残りの有機物やアンモニア性窒素等
を酸化分解する好気性微生物を定着させるために、接触
材Ｃが備えられている。さらに、接触ばっ気槽第１、第
２室Ｅ１、Ｅ２内に処理水の循環流を生ぜしめて、有機
物を含む処理水を前記定着させた好気性微生物とよく接
触させるとともに、この好気性微生物に必要な酸素を常
に与えるためのエアーを供給する散気用ブロアＤが配さ
れている。そして、接触材Ｃに生物膜等が付着しすぎて
目詰まりを起こすことを防止するため、定期的に空気を
バブリングさせて、付きすぎた生物膜等を剥離汚泥とし
て剥離する逆洗管Ｒが、接触材Ｃの下に夫々設けられて
いる。また、接触ばっ気槽第２室Ｅ２内の処理水（これ
は硝化液及び剥離汚泥を含む。）を浮上分離槽Ｍに返送
する水中ポンプ４が備えられている。この水中ポンプ４
の吸引口４ａが接触ばっ気槽第２室Ｅ２の出口ｅ付近に
設けられ、この水中ポンプ４に接続される返送路Ｂは、
前述のエジェクター３の駆動液流入側３ｂに接続されて
いる。即ち、この水中ポンプ４とエジェクター３を組み
合わせることにより、接触ばっ気槽第２室Ｅ２内の処理
水が浮上分離槽Ｍに送られるとともに、エジェクター３
により空気が吸入されて、浮上分離槽Ｍに気泡として吹
き込まれる。さらに、前述の返送路Ｂには、第一分岐管
Ｂ１及び第二分岐管Ｂ２が設けられており、夫々の分岐
管Ｂ１、Ｂ２に備えられている弁ｂ１、ｂ２を操作する
ことにより、第一分岐管Ｂ１はこの返送路Ｂ内の処理水
を接触ばっ気槽第２室Ｅ２に、第二分岐管Ｂ２は第１嫌
気炉床槽Ｎ１に返送できる構成が採用されている。次に
、沈殿槽Ｐについて説明すると、この槽Ｐには消毒槽Ｑ
が備えられ、接触ばっ気槽第２室Ｅ２からの排水に対し
て、その固形懸濁物を沈殿除去した後、消毒して放流口
２ｂから放流する。図面上、消毒槽Ｑへの流入は紙面表
裏方向で異なった位置に設けられている開口（図外）に
よりおこなわれる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a septic tank 1 of the present invention will be explained below based on the drawings. A septic tank 1 is shown in FIG. To explain the general structure, this septic tank 1 includes, from the upstream side, a flotation separation tank M, an anaerobic filter bed tank first chamber N1, an anaerobic filter bed tank second chamber N2, a contact aeration tank first chamber E1, and a contact aeration tank. Tank 2nd chamber E
2. It is composed of sedimentation tanks P in this order. below,
Each tank M, N1, N2, E1, E2, P will be explained in more detail. The flotation separation tank M is a tank in which coarse suspended matter and oil in the treated water flowing in from the inlet 2a are floated and separated using small air bubbles, and for this purpose, it is configured with an ejector 3 that functions as an aeration device to be described later. There is. The discharge port 3a of the ejector 3 is disposed in the lower region of the flotation tank M, and the stored sludge m has conventionally been buried in this region. In this flotation separation tank M, coarse suspended matter and oil float to the surface by the bubbles supplied by the ejector 3 described above, and are separated and accumulated on the liquid layer surface ms side in the tank. Furthermore, a second contact aeration tank is supplied with the air bubbles.
The inside of this layer is mixed and agitated by the returned water from the chamber E2. Next, the first chamber N1 of the anaerobic filter bed tank is configured to precipitate and separate the treated water flowing in from the flotation separation tank M, and to perform anaerobic decomposition treatment in this tank N1. Anaerobic decomposition processing is similarly performed in the second chamber N2 of the anaerobic filter bed tank. For this reason, anaerobic microorganisms that anaerobically decompose part of the organic matter in the treated water are inhabited in the first chamber N1 of the anaerobic filter bed tank and the second chamber N2 of the anaerobic filter bed tank, and in order to establish the biofilm,
Filter beds F1 and F2 are provided. Here, the filter bed F1 of the first chamber N1 of the anaerobic filter bed tank is formed of a honeycomb tubular filter mesh with a coarse lattice spacing that does not cause clogging, and the filter bed F2 of the second chamber N2 of the anaerobic filter bed tank is formed of a cage-shaped filter medium. The filter bed F1 of the anaerobic filter bed tank first chamber N1 is coarser than the filter bed F2 of the anaerobic filter bed tank second chamber N2. Next, contact aeration tank first and second chambers E1 and E
2 will be explained. These contact aeration tanks E1, E2
is equipped with a contact material C in order to colonize aerobic microorganisms that oxidize and decompose remaining organic matter, ammonia nitrogen, etc. in the water to be treated. Further, a circulating flow of the treated water is generated in the first and second chambers E1 and E2 of the contact aeration tank to bring the treated water containing organic matter into good contact with the colonized aerobic microorganisms, and to make the aerobic microorganisms A diffuser blower D is arranged to supply air to constantly provide the necessary oxygen. In order to prevent clogging caused by too much biofilm etc. adhering to the contact material C, a backwash pipe R is installed which periodically bubbles air to remove the excess biofilm etc. as peeled sludge. , are provided under the contact material C, respectively. Further, a submersible pump 4 is provided for returning the treated water (which contains nitrification liquid and exfoliated sludge) in the second chamber E2 of the contact aeration tank to the flotation separation tank M. This submersible pump 4
The suction port 4a is provided near the outlet e of the second chamber E2 of the contact aeration tank, and the return path B connected to the submersible pump 4 is as follows:
It is connected to the driving liquid inflow side 3b of the ejector 3 described above. That is, by combining the submersible pump 4 and the ejector 3, the treated water in the contact aeration tank second chamber E2 is sent to the flotation separation tank M, and the ejector 3
Air is sucked in and blown into the flotation separation tank M as bubbles. Furthermore, the above-mentioned return path B is provided with a first branch pipe B1 and a second branch pipe B2, and by operating the valves b1 and b2 provided in the respective branch pipes B1 and B2, The first branch pipe B1 is configured to return the treated water in the return path B to the contact aeration tank second chamber E2, and the second branch pipe B2 is configured to return the treated water to the first anaerobic hearth tank N1. Next, to explain about the sedimentation tank P, this tank P has a disinfection tank Q.
is provided, and solid suspensions are precipitated and removed from the waste water from the second chamber E2 of the contact aeration tank, and the waste water is disinfected and discharged from the discharge port 2b. In the drawing, the water flows into the disinfection tank Q through openings (not shown) provided at different positions in the front and back directions of the page.
【０００９】以下に本願の浄化槽１の処理水循環の働き
について説明する。接触ばっ気槽第２室Ｅ２内の処理水
は、水中ポンプ４により吸引され浮上分離槽Ｍの下部に
返送される。このとき、この処理水には接触ばっ気槽第
２室Ｅ２内に配設される接触材Ｃから剥離した剥離汚泥
と硝化液が含まれる。さらにこの返送に伴って、浮上分
離槽Ｍ内において、油分や浮遊縣濁物がエジェクターの
吐出口３ａから出る処理水と気泡の混合水によって、混
合して浮上分離される。ここで、特に油分の分離が効率
的に行われる。従って、下流側槽への流入負荷が低減さ
れる。またこの時、各槽Ｍ、Ｎ１、Ｎ２、Ｅ１、Ｅ２に
渡って処理水の移動が起こる。この結果嫌気濾床槽第１
室（沈殿分離槽としても働く。）Ｎ１でさらに浮遊物が
除去され、嫌気濾床槽第１、第２室Ｎ１、Ｎ２で有機物
の分解処理、硝化液の脱窒が進行する。即ち、浄化槽１
内に於ける処理水の循環に伴って、炭素源を含有する貯
留汚泥、剥離汚泥の移動供給が起こるとともに、接触ば
っ気槽Ｅ内の硝化液もその脱窒処理に適する嫌気濾床槽
内へ移動し、処理が促進されるのである。従って、本願
の構成においては従来利用されていなかった貯留汚泥の
炭素源を利用して、浄化槽１内の処理を充分に進めるこ
とが可能となった。[0009] The function of circulating treated water in the septic tank 1 of the present invention will be explained below. The treated water in the second chamber E2 of the contact aeration tank is sucked by the submersible pump 4 and returned to the lower part of the flotation tank M. At this time, this treated water contains the exfoliated sludge and nitrification liquid exfoliated from the contact material C disposed in the contact aeration tank second chamber E2. Further, along with this return, in the flotation separation tank M, oil and suspended solids are mixed and floated and separated by the mixed water of treated water and bubbles discharged from the ejector outlet 3a. Here, oil separation is particularly efficient. Therefore, the inflow load to the downstream tank is reduced. At this time, the treated water moves across the tanks M, N1, N2, E1, and E2. As a result, the anaerobic filter bed tank 1
Suspended substances are further removed in chamber N1 (which also functions as a sedimentation separation tank), and decomposition of organic matter and denitrification of the nitrified solution proceed in the first and second chambers N1 and N2 of the anaerobic filter bed tank. That is, septic tank 1
As the treated water circulates in the tank, the stored sludge and stripped sludge containing carbon sources are moved and supplied, and the nitrified liquid in the contact aeration tank E is also transferred to the anaerobic filter bed tank suitable for denitrification treatment. processing is facilitated. Therefore, in the configuration of the present application, it has become possible to sufficiently proceed with the treatment in the septic tank 1 by using the carbon source of the stored sludge, which has not been used in the past.
【００１０】ここで、移送管Ｂにリン除去用凝集剤を導
注ポンプ（図外）で注入（水中ポンプと稼働連動）する
と、リン除去も可能となり、凝集汚泥が浮上分離圧密さ
れ汚泥貯留の効率がよくなる。[0010] Here, if a flocculant for phosphorus removal is injected into the transfer pipe B with an injection pump (not shown) (operation linked with a submersible pump), phosphorus can also be removed, and the flocculated sludge is floated and consolidated, and the sludge storage is Improved efficiency.
【００１１】〔別実施例〕以下、本願の別実施例につい
て説明する。
（イ） 上記の実施例においては、水中ポンプ４と返
送路Ｂ、この返送路Ｂに備えられるエジェクター３によ
り、接触ばっ気槽Ｅより浮上分離槽Ｍに処理水を返送す
るとともに、浮上分離槽Ｍにおけるばっ気を行う例を示
したが、これは、水中ポンプ４の代わりにエアーポンプ
を利用するものとしても良い。従って、接触ばっ気槽Ｅ
内の処理水を浮上分離槽Ｍの下部に返送する手段を返送
手段と称する。（図２にこの例を示す。）（ロ） 上
記の実施例においては、接触ばっ気槽第２室Ｅ２の処理
水を返送する例を示したが、これは返送水としてその一
部を接触ばっ気槽第１室Ｅ１から得るものとしてもよい
。[Another Embodiment] Another embodiment of the present application will be described below. (B) In the above embodiment, the submersible pump 4, the return path B, and the ejector 3 provided in the return path B return the treated water from the contact aeration tank E to the flotation tank M, and also return the treated water to the flotation tank M. Although an example of aeration in M has been shown, an air pump may be used instead of the submersible pump 4. Therefore, contact aeration tank E
The means for returning the treated water inside to the lower part of the flotation separation tank M is called a return means. (This example is shown in Figure 2.) (B) In the above embodiment, an example was shown in which the treated water from the contact aeration tank second chamber E2 is returned, but in this case, a part of it is returned to the contact aeration tank. It may be obtained from the first chamber E1 of the aeration tank.
【００１２】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。[0012]Although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
【図１】本願の浄化槽の実施例を示す図[Figure 1] Diagram showing an example of the septic tank of the present application
【図２】本願の
別実施例の浄化槽を示す図[Fig. 2] A diagram showing a septic tank according to another embodiment of the present application.
【図３】従来例の浄化槽の構
成を示す図[Figure 3] Diagram showing the configuration of a conventional septic tank
３ 返送手段 ４ 返送手段 Ｂ 返送手段 Ｅ１ 接触ばっ気槽 Ｅ２ 接触ばっ気槽 Ｎ１ 嫌気濾床槽 Ｎ２ 嫌気濾床槽 3. Return method 4. Return method B. Return method E1 Contact aeration tank E2 Contact aeration tank N1 Anaerobic filter bed tank N2 anaerobic filter bed tank
Claims (1)
気濾床槽（Ｎ１），（Ｎ２）、接触ばっ気槽（Ｅ１），
（Ｅ２）をこの順に装備して構成された浄化槽であって
、前記接触ばっ気槽（Ｅ２）内の処理水を前記浮上分離
槽（Ｍ）の下部に返送する返送手段（４），（Ｂ），（
３）を備えている浄化槽。[Claim 1] From the sewage inflow side, a flotation separation tank (M), an anaerobic filter bed tank (N1), (N2), a contact aeration tank (E1),
(E2) in this order, the return means (4) and (B ), (
A septic tank equipped with 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14306991A JPH04367788A (en) | 1991-06-14 | 1991-06-14 | Purification tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14306991A JPH04367788A (en) | 1991-06-14 | 1991-06-14 | Purification tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04367788A true JPH04367788A (en) | 1992-12-21 |
Family
ID=15330200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14306991A Pending JPH04367788A (en) | 1991-06-14 | 1991-06-14 | Purification tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04367788A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07256289A (en) * | 1994-03-25 | 1995-10-09 | Korea Advanced Inst Of Sci Technol | Life sewage disposal device |
| JP2007136378A (en) * | 2005-11-21 | 2007-06-07 | Hitachi Housetec Co Ltd | Septic tank |
| JP2008012491A (en) * | 2006-07-10 | 2008-01-24 | Hitachi Housetec Co Ltd | Aerobic digestion tank and sewage cleaning tank equipped with the same |
| JP2008012467A (en) * | 2006-07-07 | 2008-01-24 | Hitachi Housetec Co Ltd | Water treatment apparatus |
| JP2008012465A (en) * | 2006-07-07 | 2008-01-24 | Hitachi Housetec Co Ltd | Water treatment apparatus |
| JP2008055324A (en) * | 2006-08-31 | 2008-03-13 | Hitachi Housetec Co Ltd | Sewage cleaning tank |
| WO2011118747A1 (en) * | 2010-03-26 | 2011-09-29 | 株式会社クボタ | Wastewater treatment device and wastewater treatment method |
| JP2013123663A (en) * | 2011-12-13 | 2013-06-24 | Daiei Sangyo Kk | Wastewater treatment apparatus and wastewater treatment method |
-
1991
- 1991-06-14 JP JP14306991A patent/JPH04367788A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07256289A (en) * | 1994-03-25 | 1995-10-09 | Korea Advanced Inst Of Sci Technol | Life sewage disposal device |
| JP2007136378A (en) * | 2005-11-21 | 2007-06-07 | Hitachi Housetec Co Ltd | Septic tank |
| JP2008012467A (en) * | 2006-07-07 | 2008-01-24 | Hitachi Housetec Co Ltd | Water treatment apparatus |
| JP2008012465A (en) * | 2006-07-07 | 2008-01-24 | Hitachi Housetec Co Ltd | Water treatment apparatus |
| JP4702748B2 (en) * | 2006-07-07 | 2011-06-15 | 株式会社ハウステック | Water treatment equipment |
| JP4702750B2 (en) * | 2006-07-07 | 2011-06-15 | 株式会社ハウステック | Water treatment equipment |
| JP2008012491A (en) * | 2006-07-10 | 2008-01-24 | Hitachi Housetec Co Ltd | Aerobic digestion tank and sewage cleaning tank equipped with the same |
| JP2008055324A (en) * | 2006-08-31 | 2008-03-13 | Hitachi Housetec Co Ltd | Sewage cleaning tank |
| WO2011118747A1 (en) * | 2010-03-26 | 2011-09-29 | 株式会社クボタ | Wastewater treatment device and wastewater treatment method |
| JP2013123663A (en) * | 2011-12-13 | 2013-06-24 | Daiei Sangyo Kk | Wastewater treatment apparatus and wastewater treatment method |
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