JP2002096090A - Septic tank - Google Patents
Septic tankInfo
- Publication number
- JP2002096090A JP2002096090A JP2000290445A JP2000290445A JP2002096090A JP 2002096090 A JP2002096090 A JP 2002096090A JP 2000290445 A JP2000290445 A JP 2000290445A JP 2000290445 A JP2000290445 A JP 2000290445A JP 2002096090 A JP2002096090 A JP 2002096090A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- sludge
- water
- treated
- anaerobic
- 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
- Biological Treatment Of Waste Water (AREA)
- Treatment Of Biological Wastes In General (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、被処理水を嫌気処
理する嫌気処理槽と、被処理水を好気処理する好気処理
槽を設けた浄化槽に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anaerobic treatment tank for anaerobically treating water to be treated and a purification tank provided with an aerobic treatment tank for aerobically treating water to be treated.
【０００２】[0002]
【従来の技術】近年、都市化の進展により、住宅や事務
所等の一般建築物から排出される生活雑排水が、その汚
濁負荷の軽減が十分進まないまま排出されており、公共
用水の水質汚濁の大きな原因となっている。これは、従
来、一般用の浄化槽として、し尿排水だけを処理対象と
する単独浄化槽が用いられており、台所、洗濯、浴室等
から生じる生活雑排水はそのまま放流されていたためで
ある。この生活雑排水を適切に処理することは、公共用
水域の水質汚濁の軽減に大きく貢献することは明らかで
あり、さらに、環境意識の向上に伴う水質の規制強化等
により河川等に放流される排水の水質を向上させる浄化
槽が望まれていた。2. Description of the Related Art In recent years, with the progress of urbanization, household wastewater discharged from general buildings such as offices and offices has been discharged without sufficiently reducing the pollution load. It is a major cause of pollution. This is because conventionally, as a general-purpose septic tank, a single septic tank that treats only human wastewater is used, and household wastewater generated from kitchens, laundry, bathrooms, and the like is discharged as it is. It is clear that proper treatment of this wastewater greatly contributes to the reduction of water pollution in public water bodies, and furthermore, the wastewater is discharged into rivers, etc. due to the tightening of water quality regulations along with the improvement of environmental awareness. There is a need for a septic tank that improves the quality of wastewater.
【０００３】従来、このような浄化槽としては、処理対
象排水がし尿排水だけでなく、生活雑排水も処理可能な
合併浄化槽が用いられていた。この合併浄化槽は、被処
理水を嫌気処理するとともに接触ばっ気槽等によって好
気処理させることにより、高い水質基準を満足させるこ
とができるように、し尿排水のみならず、一般生活雑排
水等も処理可能なように大容量に構成されている。Conventionally, as such a septic tank, a combined septic tank capable of treating not only wastewater to be treated but also human wastewater has been used. This combined septic tank is capable of anaerobic treatment of the water to be treated and aerobically treated by a contact aeration tank, etc., so that high water quality standards can be satisfied. It has a large capacity so that it can be processed.
【０００４】このような合併浄化槽は、嫌気処理を行う
嫌気処理槽として、嫌気性微生物により被処理水原水中
の有機物を吸着し酸化分解する嫌気濾床槽、被処理水原
水中の固形物を分離除去する夾雑物除去槽等を備えて構
成してあり、被処理水原水の流入や処理により生じた汚
泥の分離や貯留が主な役割である。一方、好気処理を行
う好気処理槽として、被処理水を対流させつつ微生物処
理可能にする接触ばっ気槽、被処理水を大量の微生物の
育成される濾床に通過させることにより微生物処理させ
る生物濾過槽等が備えて構成してあり、いずれも好気性
微生物の持つ被処理水原水中の有機物の吸着酸化分解能
力を利用した処理が主な役割である。Such a combined septic tank is an anaerobic treatment tank that performs anaerobic treatment. An anaerobic filter bed tank that adsorbs and oxidatively decomposes organic substances in the raw water to be treated by anaerobic microorganisms, and separates and removes solids in the raw water to be treated. The main role is to separate and store sludge generated by inflow and treatment of raw water to be treated. On the other hand, as an aerobic treatment tank that performs aerobic treatment, a contact aeration tank that enables microorganism treatment while convection of the treated water, and a microorganism treatment by passing the treated water through a filter bed where a large amount of microorganisms are grown. A biological filtration tank or the like is provided for the treatment, and the main role of each treatment is to utilize the ability of aerobic microorganisms to adsorb and decompose organic substances in raw water to be treated.
【０００５】また近年、前記好気処理槽としては、図７
に示したように、流動自在であり、かつ、微生物を担持
した担体Ｃ１を活性汚泥と共に内部に収容した担体流動
槽３や濾過膜を用いた膜分離槽を用いることが考えられ
ている。この時、前記担体流動槽３を用いた場合には、
その担体流動槽３内の被処理水に大量の固形物が含まれ
ていると、前記活性汚泥や担体に担持される微生物に悪
影響を及ぼす恐れがあるので、前処理において前記固形
物を十分分解しておく必要があるものとされている。ま
た、同様のことが膜分離槽の場合にも当てはまる。この
分解処理を行うためには前記嫌気処理槽では限界がある
ため、好気濾床１２を設けた好気処理槽とすることが望
ましいと考えられている。しかし、前記好気濾床１２
は、一般に網状の容器により構成されており、未分解の
固形物により目詰まりを起こす場合があることから逆洗
管Ｄ５を設け、前記逆洗管Ｄ５より放出された逆洗水に
より、目詰まりした固形物を定期的に除去して被処理水
中に浮遊させることを可能とする構成にしてある。ま
た、このような好気処理槽は、好気性微生物に酸素を供
給すると共に、前記好気処理槽内の被処理水を前記好気
濾床１２に効率よく接触させて循環させるべく、散気管
Ｄ１が内装されている。[0005] In recent years, the aerobic treatment tank has been developed as shown in FIG.
As shown in (1), it is considered to use a carrier fluidizing tank 3 in which a carrier C1 which is free-flowing and carries microorganisms together with activated sludge or a membrane separation tank using a filtration membrane is used. At this time, when the carrier fluidized tank 3 is used,
If a large amount of solid matter is contained in the water to be treated in the carrier fluidizing tank 3, the activated sludge and microorganisms carried on the carrier may be adversely affected. It is necessary to keep it. The same applies to the case of a membrane separation tank. Since the anaerobic treatment tank has a limit in performing this decomposition treatment, it is considered that an aerobic treatment tank provided with an aerobic filter bed 12 is desirable. However, the aerobic filter bed 12
Is generally constituted by a net-like container, and may be clogged by undecomposed solids. Therefore, a backwash tube D5 is provided, and clogging is caused by backwash water discharged from the backwash tube D5. The configuration is such that the solids removed are periodically removed and allowed to float in the water to be treated. In addition, such an aerobic treatment tank supplies oxygen to the aerobic microorganisms, and diffuses the air to be treated in the aerobic treatment tank with efficient contact with the aerobic filter bed 12 to circulate the air. D1 is installed.
【０００６】[0006]
【発明が解決しようとする課題】上述の従来の合併浄化
槽において、浴槽より一時的に大量に排出される浴槽排
水の浄化槽内への流入や逆洗水の放出により浄化槽内に
ある被処理水が流動し、前記嫌気処理槽内の貯留汚泥を
舞い上がらせるとともに、一度に大量の被処理水が前記
好気処理槽から担体流動槽に流入することになるから、
前記好気処理槽内の固形物が前記担体流動槽に流入する
ことになる。そのため、前記担体流動槽の上流側に嫌気
濾床槽を設けた場合には汚泥の消化不足、好気処理槽を
設けた場合には被処理水中に浮遊する固形分が原因とな
り、前記担体流動槽内に固形分が流入することになると
いう問題点があった。In the above-mentioned conventional merged septic tank, the to-be-processed water in the septic tank is discharged by the inflow of the bathtub drainage temporarily discharged from the bathtub into the septic tank and the discharge of the backwash water. It flows, and the stored sludge in the anaerobic treatment tank rises, and a large amount of water to be treated flows into the carrier fluidizing tank from the aerobic treatment tank at a time.
The solid matter in the aerobic treatment tank flows into the carrier fluidization tank. Therefore, when an anaerobic filter bed tank is provided on the upstream side of the carrier fluidization tank, sludge digestion is insufficient, and when an aerobic treatment tank is provided, solids suspended in the water to be treated cause the carrier fluidization. There was a problem that solids would flow into the tank.
【０００７】また、上述のように、合併浄化槽はし尿排
水のみならず、一般生活雑排水等も処理可能なように大
容量に構成されているため、コンパクトな合併浄化槽が
望まれていた。Further, as described above, the combined septic tank has a large capacity so as to be able to treat not only human wastewater but also general household wastewater and the like, so that a compact combined septic tank has been desired.
【０００８】従って、本発明の目的は、嫌気処理槽内の
貯留汚泥が好気処理槽に移流しにくい、コンパクトな浄
化槽を提供することにある。Accordingly, an object of the present invention is to provide a compact septic tank in which the sludge stored in the anaerobic tank is less likely to flow to the aerobic tank.
【０００９】[0009]
【課題を解決するための手段】〔構成１〕この目的を達
成するための本発明の特徴構成は、請求項１に記載のよ
うに、被処理水を嫌気処理する嫌気処理槽と、嫌気処理
された被処理水を好気処理する好気処理槽を設けた浄化
槽であって、気泡供給可能な散気部を備えた汚泥消化槽
を設け、前記嫌気処理槽と前記汚泥消化槽とを下部で連
通する連通部を設けるとともに、前記汚泥消化槽に、前
記散気部により被処理水を好気処理する好気処理部と、
被処理水を好気処理しない嫌気処理部とを形成し、前記
被処理水より固形物質を除去した上澄み液を前記嫌気処
理槽から前記好気処理槽に移流する移流機構を設けたこ
とにある。Means for Solving the Problems [Structure 1] A characteristic structure of the present invention for achieving this object is as follows: an anaerobic treatment tank for anaerobically treating water to be treated; A septic tank provided with an aerobic treatment tank for aerobically treating the treated water, wherein a sludge digestion tank provided with a diffuser capable of supplying air bubbles is provided, and the anaerobic treatment tank and the sludge digestion tank are disposed at a lower portion. Along with providing a communication portion that communicates with the aerobic treatment unit that aerobically treats the water to be treated by the aeration unit, in the sludge digestion tank,
An anaerobic treatment section that does not aerobically treat the water to be treated is provided, and an advection mechanism for advancing a supernatant liquid from which solid substances have been removed from the water to be treated from the anaerobic treatment tank to the aerobic treatment tank is provided. .
【００１０】〔作用効果１〕つまり、被処理水を嫌気処
理する嫌気処理槽と、嫌気処理された被処理水を好気処
理する好気処理槽を設けることにより、嫌気濾床槽や夾
雑物除去槽といった嫌気処理を行う槽と、担体流動槽、
接触ばっ気槽、生物濾過槽といった好気処理を行う槽と
を組み合わせて、前記被処理水を嫌気処理により嫌気分
解させた後に好気処理させることが出来、効率よくＢＯ
Ｄの大きな被処理水の消化が可能となる。つまり、負荷
の大きな被処理水を嫌気分解すると共に、負荷の低くな
った被処理水を好気処理槽で高度に浄水できるのであ
る。[Effect 1] In other words, by providing an anaerobic treatment tank for anaerobically treating the water to be treated and an aerobic treatment tank for aerobically treating the anaerobic treated water, the anaerobic filter bed tank and impurities A tank for performing anaerobic treatment such as a removal tank, a carrier flowing tank,
In combination with a tank for performing aerobic treatment such as a contact aeration tank and a biological filtration tank, the water to be treated can be anaerobically decomposed by anaerobic treatment and then subjected to aerobic treatment.
Digestion of the water to be treated having a large D becomes possible. In other words, the water to be treated with a large load is anaerobically decomposed, and the water to be treated with a low load can be highly purified in an aerobic treatment tank.
【００１１】ここで、気泡供給可能な散気部を備えた汚
泥消化槽を設け、前記嫌気処理槽と前記汚泥消化槽とを
下部で連通する連通部を設けることにより、前記嫌気処
理槽において分離された被処理水中の汚泥を、ポンプ等
の装置を使用することなく前記連通部を通じて前記汚泥
消化槽へと送ることができる。Here, a sludge digestion tank provided with an air diffuser capable of supplying air bubbles is provided, and a communication section communicating the anaerobic treatment tank and the sludge digestion tank at a lower portion is provided, so that the anaerobic treatment tank can be separated. The sludge in the treated water can be sent to the sludge digestion tank through the communication section without using a device such as a pump.
【００１２】また、前記汚泥消化槽において前記散気部
を備えて好気処理する好気処理部と前記散気部により好
気処理しない嫌気処理部とを形成してあるから、前記汚
泥消化槽内を機能分割して使用することができる。つま
り、図１に示したように、前記散気部を、例えば前記嫌
気処理槽と前記汚泥消化槽との隔壁の最下部より上部
に、かつ前記汚泥消化槽の深さ方向の中間部に設置する
ことにより、前記散気部より下部をばっ気されない嫌気
処理部としての機能を、前記散気部より上部をばっ気さ
れる好気処理部としての機能をそれぞれ持たせることが
可能となる。これにより前記嫌気処理部においては、被
処理水から汚泥を分離し、嫌気性汚泥消化、汚泥濃縮貯
留する機能を有し、前記好気処理部においては、好気性
汚泥消化、汚泥減量の機能を有することができる。Further, the sludge digestion tank is provided with an aerobic treatment section provided with the diffuser section for aerobic treatment and an anaerobic treatment section not subjected to aerobic treatment by the diffuser section. The function can be divided and used. That is, as shown in FIG. 1, the air diffuser is installed, for example, above the lowermost part of the partition wall between the anaerobic treatment tank and the sludge digestion tank, and at the middle part in the depth direction of the sludge digestion tank. By doing so, it is possible to have a function as an anaerobic processing unit in which the lower part of the air diffusion unit is not aerated and a function as an aerobic processing unit in which the upper part of the air diffusion unit is aerated. Thereby, the anaerobic treatment section has a function of separating sludge from the water to be treated, digesting anaerobic sludge, and condensing and storing sludge.In the aerobic treatment section, a function of digesting aerobic sludge and reducing sludge is provided. Can have.
【００１３】このように、前記汚泥消化槽内を機能分割
すると好気消化ができるから、従来の浄化槽における汚
泥消化が嫌気消化のみの構成であることを考慮すると、
汚泥を効率よく分解する効果が期待される。ここで、後
述の比較例において示したように、嫌気処理より好気処
理を行った方が効率よく分解されるため、汚泥分解処理
開始より２ヶ月経過後の残存汚泥量は、好気処理を行っ
た方が明らかに少なくなっている。つまり、前記汚泥消
化槽における汚泥量については、嫌気濾床槽で嫌気性汚
泥消化を行っていた従来の浄化槽に比べて明らかに少な
くなると考えられるため、好気処理を行う好気処理部を
有する汚泥消化槽を設けることにより、汚泥の減量化を
実現できると言える。つまり、浄化槽内において汚泥貯
留部を減容化できるため、浄化槽としてコンパクト化で
きる。As described above, aerobic digestion can be performed by dividing the inside of the sludge digestion tank into functions. Considering that sludge digestion in a conventional septic tank is only anaerobic digestion,
The effect of decomposing sludge efficiently is expected. Here, as shown in a comparative example described later, since the aerobic treatment is more efficiently decomposed than the anaerobic treatment, the amount of residual sludge two months after the start of the sludge decomposition treatment is determined by the aerobic treatment. The number of people who went there is clearly less. In other words, the amount of sludge in the sludge digestion tank is considered to be clearly smaller than that in the conventional septic tank that has performed anaerobic sludge digestion in an anaerobic filter bed tank, and thus has an aerobic treatment section that performs aerobic treatment. It can be said that sludge reduction can be realized by providing a sludge digestion tank. That is, the volume of the sludge storage unit can be reduced in the septic tank, so that the sludge tank can be made compact.
【００１４】通常、浄化槽施設の敷地として広い面積を
確保することは困難であり、建築物等に近接して浄化槽
施設を設けなければならないといった立地条件に制約を
受ける場合が多いが、上述のようにコンパクト化が実現
できれば敷地条件に制約を受け難い合併浄化槽を提供で
きる。また、汚泥が減量するのであるから、汚泥引き抜
き作業の負担を軽減することができる。Usually, it is difficult to secure a large area as the site of the septic tank facility, and in many cases the location conditions such as the necessity of providing the septic tank facility in proximity to a building or the like are often restricted. If a more compact system can be realized, it is possible to provide a merged septic tank that is not easily restricted by site conditions. Further, since the amount of sludge is reduced, it is possible to reduce the burden of the sludge extraction operation.
【００１５】また、前記被処理水より固形物質を除去し
た上澄み液を前記嫌気処理槽から前記好気処理槽に移流
する移流機構を設けたことにより、固形物質を除去する
ことで低負荷となった被処理水を優先的に前記移流機構
により前記好気処理槽に移流することができる。ここ
で、前記移流機構としては、例えば、図４に示したよう
に前記移流機構の被処理水吸い込み口を、前記嫌気処理
槽の最低水位（ＬＷＬ）と同程度の高さに設けたＵ字管
を設けた機構を採用することが出来、前記吸い込み口よ
り固形物質を除去した上澄み液をエアリフト作用により
前記好気処理槽へ移送することができるのである。さら
に、前記嫌気処理部において、被処理水はばっ気される
ことなくほぼ静止状態であることから、前記嫌気処理部
の貯留汚泥が舞い上がることはほとんどないため、前記
吸い込み口より前記貯留汚泥が汚泥消化槽外に流出する
ことはほとんどない。つまり、嫌気処理槽内の貯留汚泥
が好気処理槽に移流しにくい合併浄化槽を提供すること
が可能となる。Further, by providing an advection mechanism for advancing the supernatant liquid from which solid substances have been removed from the water to be treated from the anaerobic treatment tank to the aerobic treatment tank, the load can be reduced by removing the solid substances. The water to be treated can be preferentially transferred to the aerobic treatment tank by the transfer mechanism. Here, as the advection mechanism, for example, as shown in FIG. 4, a U-shaped water inlet of the advection mechanism is provided at the same height as the minimum water level (LWL) of the anaerobic treatment tank. A mechanism provided with a pipe can be adopted, and the supernatant liquid from which solid substances have been removed from the suction port can be transferred to the aerobic treatment tank by an air lift action. Further, in the anaerobic treatment section, since the water to be treated is in a substantially stationary state without being aerated, the stored sludge in the anaerobic treatment section hardly soars, so that the stored sludge is discharged from the suction port. It hardly flows out of the digester. That is, it is possible to provide a combined clarification tank in which the sludge stored in the anaerobic treatment tank is less likely to be transferred to the aerobic treatment tank.
【００１６】〔構成２〕この目的を達成するための本発
明の特徴構成は、請求項２に記載のように、上記構成１
に加えて、前記好気処理槽として、微生物を担持させた
担体を流動可能に収容してある担体流動槽と接触材を充
填した接触ばっ気槽とを被処理水がこの順に移流するよ
うに設け、前記担体より剥離した汚泥及び前記接触材よ
り剥離した汚泥を前記汚泥消化槽に移送する汚泥移送機
構を設けたことにある。[Structure 2] The characteristic structure of the present invention for achieving this object is as described in claim 2.
In addition, as the aerobic treatment tank, the water to be treated is transferred in this order between the carrier flow tank containing the carrier carrying the microorganisms in a flowable manner and the contact aeration tank filled with the contact material. And a sludge transfer mechanism for transferring the sludge separated from the carrier and the sludge separated from the contact material to the sludge digestion tank.
【００１７】〔作用効果２〕つまり、前記好気処理槽と
して、微生物を担持させた担体を流動可能に収容してあ
る担体流動槽と接触材を充填した接触ばっ気槽を被処理
水がこの順に移流するように設けることにより、ＢＯＤ
が２００ｍｇ／Ｌである被処理水の原水を２０ｍｇ／Ｌ
のレベルにまで低下させることが可能になる。つまり、
通常の使用状態において、ＢＯＤの除去率が９０パーセ
ント以上かつ浄化槽から放流される処理水のＢＯＤが２
０ｍｇ／Ｌ以下の処理能力を有する合併浄化槽を提供す
ることが可能になる。また、これにより被処理水の生物
処理が前記担体流動槽と前記接触ばっ気槽での処理だけ
でも充分な処理効果があることが判る。[Effect 2] In other words, the aerobic treatment tank is composed of a carrier fluidization tank containing a carrier carrying microorganisms and a contact aeration tank filled with a contact material. BOD is provided by advection in order.
Of raw water to be treated is 20 mg / L
Can be reduced to the level of That is,
In a normal use condition, the BOD removal rate is 90% or more and the BOD of the treated water discharged from the septic tank is 2%.
It is possible to provide a combined septic tank having a processing capacity of 0 mg / L or less. In addition, it can be seen that the biological treatment of the water to be treated has a sufficient treatment effect only by the treatment in the carrier fluidizing tank and the contact aeration tank.
【００１８】また、前記担体より剥離した汚泥及び前記
接触材より剥離した汚泥を、前記汚泥消化槽に移送する
汚泥移送機構を設けることにより、前記汚泥移送機構に
より前記汚泥消化槽に移送することができる。そのた
め、前記好気処理部において再度好気性汚泥消化を行う
ことができ、効率よく汚泥を分解することができる。Further, it is possible to provide a sludge transfer mechanism for transferring the sludge separated from the carrier and the sludge separated from the contact material to the sludge digestion tank, so that the sludge transfer mechanism transfers the sludge to the sludge digestion tank. it can. Therefore, the aerobic sludge digestion can be performed again in the aerobic treatment section, and the sludge can be efficiently decomposed.
【００１９】〔構成３〕この目的を達成するための本発
明の特徴構成は、請求項３に記載のように、上記構成１
もしくは２に加えて、前記汚泥消化槽において、前記好
気処理部と前記嫌気処理部とを仕切る濾床を設けたこと
にある。[Structure 3] The characteristic structure of the present invention for achieving this object is as described in claim 3.
Alternatively, in addition to the configuration 2, in the sludge digestion tank, a filter bed for separating the aerobic treatment section and the anaerobic treatment section is provided.
【００２０】〔作用効果３〕つまり、前記汚泥消化槽の
嫌気処理部において、被処理水はばっ気されることなく
ほぼ静止状態であることから、前記嫌気処理部の貯留汚
泥が舞い上がる可能性は低いが、前記汚泥消化槽におけ
る前記好気処理部と前記嫌気処理部とを仕切るように濾
床を設けることにより、前記嫌気処理部にばっ気による
被処理水の流動が及ぶ可能性をさらに低くすることが出
来る。このため、前記嫌気処理部の貯留汚泥が舞い上が
る可能性はより低くなるため、嫌気処理槽内の貯留汚泥
が好気処理槽に、より移流しにくい合併浄化槽を提供す
ることが可能となる。また、前記好気処理部と前記嫌気
処理部とを仕切るように濾床が設けられているから、前
記汚泥消化槽における嫌気処理部と好気処理部の機能分
割を、より効率的に行うことができる構成となる。[Effect 3] In other words, in the anaerobic treatment section of the sludge digestion tank, since the water to be treated is in a substantially stationary state without being aerated, there is a possibility that the stored sludge of the anaerobic treatment section will soar. Although low, by providing a filter bed to partition the aerobic treatment section and the anaerobic treatment section in the sludge digestion tank, the possibility that the flow of the water to be treated by aeration to the anaerobic treatment section is further reduced. You can do it. For this reason, the possibility that the stored sludge in the anaerobic treatment section rises is further reduced, so that it is possible to provide a combined clarification tank in which the stored sludge in the anaerobic treatment tank is less likely to flow to the aerobic treatment tank. Further, since the filter bed is provided so as to partition the aerobic treatment section and the anaerobic treatment section, the functional separation of the anaerobic treatment section and the aerobic treatment section in the sludge digestion tank is performed more efficiently. It becomes the composition which can do.
【００２１】[0021]
【発明の実施の形態】以下に本発明の実施の形態を図面
に基づいて説明するが、本発明は、これらによって限定
されるものではない。本発明の浄化槽は、図１〜２に示
したように、嫌気処理槽として嫌気濾床槽１を、好気処
理槽として担体流動槽３、接触ばっ気槽４を設け、前記
嫌気濾床槽１の下流に汚泥消化槽２を、前記接触ばっ気
槽４の下流に沈殿槽５、消毒槽６等を備えている。被処
理水の原水は、原水流入部Ｉから前記嫌気濾床槽１に流
入した後、汚泥消化槽２、担体流動槽３、接触ばっ気槽
４の順に下流へ移送されつつ分解処理され、沈殿槽５、
消毒槽６を経た後、放流口Ｚから槽外に放流される。
尚、図１は、本発明の浄化槽を平面視した図２における
縦断側面図とする。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited thereto. The septic tank of the present invention, as shown in FIGS. 1 and 2, is provided with an anaerobic filter tank 1 as an anaerobic treatment tank, a carrier fluidizing tank 3 and a contact aeration tank 4 as an aerobic treatment tank. 1, a sludge digestion tank 2 is provided, and a downstream of the contact aeration tank 4 is provided with a sedimentation tank 5, a disinfection tank 6, and the like. The raw water to be treated flows into the anaerobic filter bed tank 1 from the raw water inflow section I, is decomposed while being transferred downstream in the order of the sludge digestion tank 2, the carrier fluidization tank 3, and the contact aeration tank 4, and is subjected to sedimentation. Tank 5,
After passing through the disinfection tank 6, it is discharged from the discharge port Z to the outside of the tank.
FIG. 1 is a vertical sectional side view in FIG. 2 showing the septic tank of the present invention in plan view.
【００２２】前記嫌気濾床槽１は嫌気濾床７を備えると
共に、前記嫌気濾床７に嫌気性微生物を定着保持して育
成させられる構成としてある。前記嫌気濾床槽１に流入
した被処理水の原水は、前記嫌気濾床７の嫌気性微生物
により嫌気処理を受け、被処理水中の固形物が分解処理
される。分解処理により生じた汚泥は、前記嫌気濾床槽
１の底部に沈降する。このようにして貯留した汚泥は、
前記嫌気濾床槽１と前記汚泥消化槽２とを下部で連通す
る連通部８を経由して前記汚泥消化槽２へ送られる。前
記嫌気濾床槽１の底部から前記連通部８を経由した前記
汚泥消化槽２の底部までが汚泥の貯留部となる。The anaerobic filter bed tank 1 is provided with an anaerobic filter bed 7 and is constructed so that anaerobic microorganisms can be fixedly maintained on the anaerobic filter bed 7 and grown. The raw water to be treated that has flowed into the anaerobic filter bed tank 1 is subjected to anaerobic treatment by the anaerobic microorganisms in the anaerobic filter bed 7, and solids in the treated water are decomposed. Sludge generated by the decomposition treatment settles at the bottom of the anaerobic filter bed tank 1. The sludge stored in this way is
The anaerobic filter bed tank 1 and the sludge digestion tank 2 are sent to the sludge digestion tank 2 via a communication portion 8 that communicates at a lower portion. From the bottom of the anaerobic filter bed tank 1 to the bottom of the sludge digestion tank 2 via the communication section 8 is a sludge storage section.
【００２３】また、前記被処理水より固形物質を除去し
た上澄み液は、エアリフトポンプ等による移流機構Ｗ３
を経由して前記担体流動槽３へと移流される。前記移流
機構Ｗ３の被処理水吸い込み口は、前記嫌気濾床槽１の
最低水位（ＬＷＬ）と同程度の高さに設けられており、
前記吸い込み口より固形物質を除去した上澄み液を所定
量ずつ好気処理槽である前記担体流動槽３へ移送するこ
とができるのである。ここで、前記嫌気濾床槽１の最高
水位（ＨＷＬ）と最低水位（ＬＷＬ）との間を流量調整
部とし、被処理水として台所、洗濯、浴室等から生じる
大量の低負荷の生活雑排水が流入した場合に、この大量
の被処理水が急激に下流槽に流出することのないように
貯留しておく場所となっている。ここで、前記流量調節
部の許容量を越えた大量の被処理水が流入した場合は、
オーバーフローにより越流機構Ｗ１を経由して前記担体
流動槽３へ移流させることができる。この時、大量に流
入する被処理水は浴槽排水等の低負荷の生活雑排水であ
るから、前記被処理水を前記嫌気濾床槽１や前記汚泥消
化槽２を経由させなくても何ら問題はない。つまり、前
記越流機構Ｗ１により直接担体流動槽３へ移流させた場
合においても、被処理水の処理効率の良い合併浄化槽を
提供することができる。The supernatant obtained by removing solid substances from the water to be treated is supplied to an advection mechanism W3 by an air lift pump or the like.
Through the carrier flow tank 3. The treated water suction port of the advection mechanism W3 is provided at the same height as the minimum water level (LWL) of the anaerobic filter tank 1;
The supernatant liquid from which the solid substance has been removed from the suction port can be transferred by a predetermined amount to the carrier fluidizing tank 3, which is an aerobic treatment tank. Here, between the highest water level (HWL) and the lowest water level (LWL) of the anaerobic filter bed tank 1 is used as a flow control section, and a large amount of low-load household wastewater generated from a kitchen, a washing machine, a bathroom, or the like as water to be treated. This is where the large amount of water to be treated is stored so that it does not suddenly flow out to the downstream tank when water flows in. Here, when a large amount of water to be treated exceeds the allowable amount of the flow rate control unit,
By the overflow, the carrier can be transferred to the carrier fluidizing tank 3 via the overflow mechanism W1. At this time, since the treated water flowing in a large amount is low-load household wastewater such as bathtub drainage, there is no problem even if the treated water does not pass through the anaerobic filter bed tank 1 or the sludge digestion tank 2. There is no. That is, even in the case where the water is directly transferred to the carrier flowing tank 3 by the overflow mechanism W1, it is possible to provide a combined purification tank having high treatment efficiency of the water to be treated.
【００２４】前記汚泥消化槽２には気泡供給可能な散気
管Ｄ１を設置して前記散気管Ｄ１の散気口を散気部とす
る。ここで、前記汚泥消化槽２において、前記散気部に
よりばっ気され、被処理水が流動するイメージを図５
（ａ）に示す。つまり、前記散気部よりばっ気すると、
前記汚泥消化槽２内のばっ気の及ぶ範囲の被処理水は流
動するのに対し、ばっ気が及ばない被処理水は流動しな
い傾向が見られる。すると、前記汚泥消化槽２におい
て、被処理水を流動させることなく処理する嫌気処理部
が前記汚泥消化槽２内部に形成され、被処理をばっ気に
より流動させつつ処理する好気処理部が前記汚泥消化槽
２内部に形成されるため、被処理水を処理する際に前記
汚泥消化槽２を機能分割することができる。例えば、前
記散気部を、前記嫌気濾床槽１と前記汚泥消化槽２との
隔壁の最下部より上部に、かつ前記汚泥消化槽２の深さ
方向の中間部に設けることにより、前記散気部より下部
をばっ気されない嫌気処理部として、前記散気部より上
部をばっ気される好気処理部として機能させることが可
能となる。尚、図５（ａ）において、実線での矢印がば
っ気による被処理水の水流の主要な経路となる。一方、
破線での矢印は、前記散気部より下部における被処理水
の水流の経路であるが、このような水流の経路を辿るこ
とはほとんどないと考えられる。このため、前記散気部
によるばっ気が前記嫌気処理部の貯留汚泥に影響を及ぼ
し、前記貯留汚泥が舞い上がることはほとんどない。An air diffuser D1 capable of supplying air bubbles is installed in the sludge digestion tank 2, and an air diffuser port of the air diffuser D1 serves as an air diffuser. Here, in the sludge digestion tank 2, an image in which the water to be treated flows while being aerated by the aeration unit is shown in FIG.
(A). That is, when the air is diffused from the air diffuser,
In the sludge digestion tank 2, there is a tendency that the water to be treated within the range of aeration flows, while the water to be treated which is not aerated does not flow. Then, in the sludge digestion tank 2, an anaerobic treatment section for treating the water to be treated without flowing is formed inside the sludge digestion tank 2, and the aerobic treatment section for treating the treatment while flowing the aeration by aeration is described above. Since the sludge digestion tank 2 is formed inside the sludge digestion tank 2, the function of the sludge digestion tank 2 can be divided when treating the water to be treated. For example, by providing the air diffuser above the lowermost part of the partition wall between the anaerobic filter bed tank 1 and the sludge digestion tank 2 and at an intermediate portion in the depth direction of the sludge digestion tank 2, It is possible to function as an anaerobic processing unit in which the lower part of the air part is not aerated and as an aerobic processing part in which the upper part of the air diffuser is aerated. Note that, in FIG. 5A, the solid line arrow is a main path of the flow of the water to be treated due to aeration. on the other hand,
The arrow indicated by the broken line is the path of the water flow of the water to be treated below the air diffuser, but it is considered that such a path of the water flow hardly follows. For this reason, the aeration by the aeration unit affects the stored sludge in the anaerobic treatment unit, and the stored sludge hardly soars.
【００２５】また、前記散気部は、前記汚泥消化槽２内
の被処理水がばっ気される好気処理部と、ばっ気されな
い嫌気処理部とに分かれるように気泡供給するように設
けられてあれば採用できる。前述のばっ気されない嫌気
処理部とは、汚泥貯留部が被処理水の水流の影響を受け
難い部分を必ず含んでいるものとする。これにより前記
嫌気処理部においては、前記嫌気濾床槽１を経由した被
処理水から汚泥を分離し、嫌気性汚泥消化、汚泥濃縮貯
留する機能を有し、前記好気処理部においては、好気性
汚泥消化、汚泥減量の機能を有するのである。The aeration unit is provided so as to supply air bubbles so as to be divided into an aerobic treatment unit in which the water to be treated in the sludge digestion tank 2 is aerated and an anaerobic treatment unit in which the water is not aerated. If you have, you can adopt. The anaerobic treatment section which is not aerated is assumed to include a portion where the sludge storage section is hardly affected by the flow of the water to be treated. Thus, the anaerobic treatment section has a function of separating sludge from the water to be treated that has passed through the anaerobic filter bed tank 1, digesting anaerobic sludge, and condensing and storing sludge. It has the functions of digesting sludge and reducing sludge.
【００２６】前記担体流動槽３は、好気性微生物を担持
させた状態で被処理水と共に流動可能な担体Ｃ１を収容
保持する。また、気泡供給により前記担体Ｃ１を均等に
流動させる散気管Ｄ２を設けて構成してある。このよう
な構成により前記移流機構Ｗ３を経由して前記担体流動
槽３内に流入した被処理水は、前記好気性微生物により
好気分解され、浄化される。このように好気処理された
被処理水は、前記担体流動槽３の底部より前記接触ばっ
気槽４へと移流する。前記担体流動槽３の底部には前記
担体Ｃ１より目の細かい格子部が設けてあり、前記担体
Ｃ１の移流抑止と被処理水及び汚泥の移流を可能とする
構成となっている。また、前記担体Ｃ１より剥離した汚
泥及び前記接触ばっ気槽に充填されている接触材より剥
離した汚泥は、エアリフトポンプ等の汚泥移送機構Ｗ２
により前記汚泥消化槽２に移送される。The carrier fluidizing tank 3 contains and holds a carrier C1 which is capable of flowing together with the water to be treated while carrying the aerobic microorganisms. Further, an air diffuser D2 for uniformly flowing the carrier C1 by supplying air bubbles is provided. With this configuration, the water to be treated that has flowed into the carrier fluidized tank 3 via the advection mechanism W3 is aerobicly decomposed and purified by the aerobic microorganisms. The treated water subjected to the aerobic treatment as described above flows from the bottom of the carrier fluidized tank 3 to the contact aerated tank 4. At the bottom of the carrier fluidized tank 3, a grid portion finer than the carrier C1 is provided, which is configured to prevent the carrier C1 from advancing and allow the water to be treated and the sludge to migrate. Further, the sludge separated from the carrier C1 and the sludge separated from the contact material filled in the contact aeration tank are supplied to a sludge transfer mechanism W2 such as an air lift pump.
Is transferred to the sludge digestion tank 2.
【００２７】前記接触ばっ気槽４は、図２に示したよう
に、前記担体流動槽３の下流に設けることができ、接触
材を備えると共に、前記接触材に好気性微生物を定着保
持して育成させられる構成としてある。前記接触ばっ気
槽４は、ハニカムネット等の網状の容器により構成され
た槽であるため、前記担体流動槽３の底部より被処理水
は移流自在となる。このように前記担体流動槽３より前
記接触ばっ気槽４に流入した被処理水は、前記接触材の
好気性微生物により好気処理を受け、好気分解される。
また、気泡供給により被処理水を均等に流動させる散気
管Ｄ３を備えるものとする。As shown in FIG. 2, the contact aeration tank 4 can be provided downstream of the carrier fluidizing tank 3, and is provided with a contact material. There is a configuration that can be raised. Since the contact aeration tank 4 is a tank constituted by a net-shaped container such as a honeycomb net, the water to be treated can freely flow from the bottom of the carrier fluidized tank 3. The water to be treated, which has flowed into the contact aeration tank 4 from the carrier fluidizing tank 3 in this way, undergoes aerobic treatment by the aerobic microorganisms of the contact material and is aerobicly decomposed.
In addition, an air diffuser D3 for evenly flowing the water to be treated by supplying bubbles is provided.
【００２８】また、前記接触ばっ気槽４の前記接触材に
過剰に付着した微生物を剥離させるために散気する逆洗
管Ｄ４を設けることも可能である。前記散気管Ｄ１〜Ｄ
３、および逆洗管Ｄ４については、気泡供給量を調節で
きるものであることが好ましい。It is also possible to provide a backwash pipe D4 for diffusing air in order to remove microorganisms that have excessively adhered to the contact material in the contact aeration tank 4. The air diffusers D1 to D
3 and the backwash tube D4 are preferably capable of adjusting the bubble supply amount.
【００２９】前記接触ばっ気槽４を経由した被処理水
は、清浄な上澄み液のみを外部に放流可能にした前記沈
殿槽５に送られる。前記沈殿槽５は、汚泥を重力により
前記接触ばっ気槽４に速やかに移送できる構成であれば
よい。この時貯留された汚泥は、前記汚泥移送機構Ｗ２
により前記汚泥消化槽２に移送される。前記沈殿槽５を
経由した清浄な上澄み液は前記沈殿槽５の上部に設けら
れた消毒槽６に流入し、固形消毒剤と接触することによ
り消毒された後、放流口Ｚより槽外へ放出される。The water to be treated passed through the contact aeration tank 4 is sent to the settling tank 5 in which only a clean supernatant liquid can be discharged to the outside. The sedimentation tank 5 may have any configuration as long as sludge can be quickly transferred to the contact aeration tank 4 by gravity. The sludge stored at this time is transferred to the sludge transfer mechanism W2.
Is transferred to the sludge digestion tank 2. The clean supernatant liquid that has passed through the sedimentation tank 5 flows into a disinfection tank 6 provided above the sedimentation tank 5 and is disinfected by contact with a solid disinfectant, and then discharged from the discharge port Z to the outside of the tank. Is done.
【００３０】〔別実施形態〕以下に別実施形態を説明す
る。前記汚泥消化槽２の嫌気処理部において、被処理水
はばっ気されることなくほぼ静止状態であることから、
前記嫌気処理部の貯留汚泥が舞い上がる可能性は低い
が、図３に示したように、前記汚泥消化槽２における前
記好気処理部と前記嫌気処理部とを仕切るように濾床９
を設ける構成とすることも可能である。この時、被処理
水は、ばっ気により図５（ｂ）に示したように流動す
る。つまり、前記嫌気処理部にばっ気による被処理水の
流動が及ぶ可能性をさらに低くすることができるため、
前記嫌気処理部の貯留汚泥が舞い上がる可能性を、より
低くすることが出来る。この時、前記濾床９は前記汚泥
消化槽２における散気部の下部に設置することが好まし
い。また、このように構成すると、前記汚泥消化槽２に
おける嫌気処理部と好気処理部の機能分割を、より効率
的に行うことができる構成となる。[Another Embodiment] Another embodiment will be described below. In the anaerobic treatment section of the sludge digestion tank 2, the water to be treated is in a substantially stationary state without being aerated,
Although it is unlikely that the stored sludge in the anaerobic treatment section rises, as shown in FIG. 3, the filter bed 9 separates the aerobic treatment section and the anaerobic treatment section in the sludge digestion tank 2.
May be provided. At this time, the water to be treated flows as shown in FIG. In other words, the possibility of the flow of the water to be treated due to aeration to the anaerobic treatment section can be further reduced,
The possibility that the stored sludge in the anaerobic treatment section soars can be further reduced. At this time, it is preferable that the filter bed 9 is installed at a lower part of the air diffuser in the sludge digestion tank 2. Further, with such a configuration, the function of the anaerobic treatment unit and the aerobic treatment unit in the sludge digestion tank 2 can be more efficiently divided.
【００３１】また、前記嫌気濾床槽１の代わりに、嫌気
濾床７のような濾床の無い夾雑物除去槽１１を設けるこ
とも可能である。前記夾雑物除去槽１１に流入した被処
理水の原水中の浮遊物や固形物は沈澱分離されて前記夾
雑物除去槽１１の底部に汚泥として貯留される。このよ
うにして貯留した汚泥は、前記連通部８を経由して前記
汚泥消化槽２へ送られる。Further, instead of the anaerobic filter bed tank 1, it is also possible to provide an impurity removing tank 11 having no filter bed such as the anaerobic filter bed 7. Floating substances and solids in the raw water to be treated that flow into the impurity removing tank 11 are precipitated and separated and stored as sludge at the bottom of the impurity removing tank 11. The sludge thus stored is sent to the sludge digestion tank 2 via the communication section 8.
【００３２】このように、前記汚泥消化槽２において、
前記濾床９より下部をばっ気されない嫌気処理部として
の機能を、前記濾床９より上部をばっ気される好気処理
部としての機能をそれぞれ持たせることが可能となる。Thus, in the sludge digestion tank 2,
It is possible to have a function as an anaerobic processing unit in which the lower part of the filter bed 9 is not aerated and a function as an aerobic processing unit in which the upper part of the filter bed 9 is aerated.
【００３３】〔比較例〕浄化槽汚泥を、好気処理により
分解した場合と嫌気処理により分解した場合において、
汚泥容積の経時変化を比較した。実験に使用した汚泥
は、浄化槽を清掃した際に得られた汚泥を使用し、２０
Ｌ樹脂製容器中において実験を行った。好気処理は、樹
脂製容器中に汚泥を投入後４Ｌ／分の条件でばっ気を行
い、嫌気処理は、樹脂製容器中に汚泥を投入後静置する
ことにより行った。結果を図６に示す。[Comparative Example] When septic tank sludge was decomposed by aerobic treatment and when it was decomposed by anaerobic treatment,
The change with time of the sludge volume was compared. As the sludge used for the experiment, the sludge obtained when the septic tank was cleaned was used.
The experiment was performed in a container made of L resin. The aerobic treatment was performed by injecting sludge into a resin container and then performing aeration under a condition of 4 L / min. The anaerobic treatment was performed by charging the sludge in the resin container and allowing it to stand. FIG. 6 shows the results.
【００３４】これによると、実験開始より２ヶ月経過後
の残存汚泥量は、好気処理を行った場合は、実験開始当
初の汚泥量の約半分にまで減少しており、さらに嫌気処
理を行った場合と比較すると約３分の２程度にまで減少
していることが判明した。つまり、浄化槽内に貯留され
ている汚泥をばっ気により好気処理することで、嫌気処
理する場合よりも効率よく分解できることが判る。According to this, the amount of residual sludge two months after the start of the experiment, when aerobic treatment was performed, was reduced to about half of the amount of sludge at the beginning of the experiment, and further anaerobic treatment was performed. It was found that it was reduced to about two thirds as compared with the case where In other words, it can be seen that the aerobic treatment of the sludge stored in the septic tank can be more efficiently decomposed than the anaerobic treatment.
【図１】本発明の浄化槽の縦断側面概略図FIG. 1 is a schematic longitudinal sectional side view of a septic tank of the present invention.
【図２】本発明の浄化槽における平面概略図FIG. 2 is a schematic plan view of a septic tank according to the present invention.
【図３】本発明の浄化槽の別実施例の縦断側面概略図FIG. 3 is a schematic vertical sectional side view of another embodiment of the septic tank of the present invention.
【図４】図３における嫌気濾床槽の横断側面断面図FIG. 4 is a cross-sectional side view of the anaerobic filter bed in FIG.
【図５】本発明の浄化槽の汚泥消化槽におけるばっ気に
よる水流のイメージ図 （ａ）嫌気処理槽として嫌気濾床槽を設けた場合 （ｂ）嫌気処理槽として夾雑物除去槽を設けた場合FIG. 5 is an image diagram of a water flow due to aeration in a sludge digestion tank of the septic tank of the present invention. (A) When an anaerobic filter bed tank is provided as an anaerobic treatment tank (b) When an impurity removing tank is provided as an anaerobic treatment tank
【図６】好気処理と嫌気処理による汚泥容積の経時変化
を比較した図FIG. 6 is a diagram comparing the change with time of the sludge volume due to aerobic treatment and anaerobic treatment.
【図７】従来の合併浄化槽の縦断側面概略図FIG. 7 is a schematic vertical sectional side view of a conventional merged septic tank.
１ 嫌気濾床槽 ２ 汚泥消化槽 ３ 担体流動槽 ４ 接触ばっ気槽 ５ 沈殿槽 ６ 消毒槽 ７ 嫌気濾床 ８ 連通部 ９ 濾床 １１ 夾雑物除去槽 １２ 好気濾床 Ｉ 原水流入部 Ｚ 放流口 Ｗ１ 越流機構 Ｗ２ 汚泥移送機構 Ｗ３ 移流機構 Ｃ１ 担体 Ｄ１〜３ 散気管 Ｄ４〜５ 逆洗管 DESCRIPTION OF SYMBOLS 1 Anaerobic filter bed tank 2 Sludge digestion tank 3 Carrier flow tank 4 Contact aeration tank 5 Sedimentation tank 6 Disinfection tank 7 Anaerobic filter bed 8 Communication part 9 Filter bed 11 Contaminant removal tank 12 Aerobic filter bed I Raw water inflow part Z Discharge Mouth W1 Overflow mechanism W2 Sludge transfer mechanism W3 Transfer mechanism C1 Carrier D1-3 Diffuser D4-5 Backwash
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鈴木 隆弘 兵庫県尼崎市浜１丁目１番１号 株式会社 クボタ技術開発研究所内 Ｆターム(参考） 4D003 AA14 AB02 BA02 DA09 DA21 DA22 4D027 AB07 AB12 AB14 AB16 4D040 BB51 BB82 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Takahiro Suzuki 1-1-1 Hama, Amagasaki-shi, Hyogo F-term in Kubota Technology Development Laboratory Co., Ltd. 4D003 AA14 AB02 BA02 DA09 DA21 DA22 4D027 AB07 AB12 AB14 AB16 4D040 BB51 BB82
Claims (3)
嫌気処理された被処理水を好気処理する好気処理槽を設
けた浄化槽であって、 気泡供給可能な散気部を備えた汚泥消化槽を設け、前記
嫌気処理槽と前記汚泥消化槽とを下部で連通する連通部
を設けるとともに、前記汚泥消化槽に、前記散気部によ
り被処理水を好気処理する好気処理部と、被処理水を好
気処理しない嫌気処理部とを形成し、前記被処理水より
固形物質を除去した上澄み液を前記嫌気処理槽から前記
好気処理槽に移流する移流機構を設けてある浄化槽。An anaerobic treatment tank for anaerobically treating water to be treated,
A septic tank provided with an aerobic treatment tank for aerobically treating anaerobic treated water, wherein a sludge digestion tank provided with a diffuser capable of supplying air bubbles is provided, and the anaerobic treatment tank and the sludge digestion tank are provided. A communication unit is provided at the lower part, and an aerobic treatment unit that aerobically treats the water to be treated by the diffuser unit and an anaerobic treatment unit that does not aerobically treat the water to be treated are formed in the sludge digestion tank. And a purification tank provided with a transfer mechanism for transferring the supernatant liquid from which solid substances have been removed from the water to be treated from the anaerobic treatment tank to the aerobic treatment tank.
せた担体を流動可能に収容してある担体流動槽と接触材
を充填した接触ばっ気槽とを被処理水がこの順に移流す
るように設け、前記担体より剥離した汚泥及び前記接触
材より剥離した汚泥を前記汚泥消化槽に移送する汚泥移
送機構を設けてある請求項１に記載の浄化槽。2. A method according to claim 1, wherein the aerobic treatment tank is configured such that water to be treated flows in this order between a carrier flow tank containing a carrier carrying microorganisms and a contact aeration tank filled with a contact material. 2. The septic tank according to claim 1, further comprising a sludge transfer mechanism for transferring the sludge separated from the carrier and the sludge separated from the contact material to the sludge digester. 3.
部と前記嫌気処理部とを仕切る濾床を設けた請求項１又
は２いずれか１項に記載の浄化槽。3. The septic tank according to claim 1, wherein the sludge digestion tank is provided with a filter bed for separating the aerobic treatment section and the anaerobic treatment section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000290445A JP4017331B2 (en) | 2000-09-25 | 2000-09-25 | Septic tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000290445A JP4017331B2 (en) | 2000-09-25 | 2000-09-25 | Septic tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002096090A true JP2002096090A (en) | 2002-04-02 |
| JP4017331B2 JP4017331B2 (en) | 2007-12-05 |
Family
ID=18773677
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000290445A Expired - Fee Related JP4017331B2 (en) | 2000-09-25 | 2000-09-25 | Septic tank |
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| Country | Link |
|---|---|
| JP (1) | JP4017331B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004008927A (en) * | 2002-06-06 | 2004-01-15 | Hitachi Housetec Co Ltd | Solid-liquid separation tank having filter bed and sewage cleaning tank equipped therewith |
| 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 |
| JP2015180492A (en) * | 2014-03-05 | 2015-10-15 | 大阪瓦斯株式会社 | Apparatus for treating waste water |
| JP2016131939A (en) * | 2015-01-20 | 2016-07-25 | フジクリーン工業株式会社 | Water treatment apparatus |
| CN109694162A (en) * | 2019-02-15 | 2019-04-30 | 周鼎力 | A kind of remodeling septic tank of rural toilet liquid dung and sanitary wastewater processing up to standard |
| WO2023112615A1 (en) * | 2021-12-17 | 2023-06-22 | 株式会社クボタ | Carrier flow tank and septic tank |
-
2000
- 2000-09-25 JP JP2000290445A patent/JP4017331B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004008927A (en) * | 2002-06-06 | 2004-01-15 | Hitachi Housetec Co Ltd | Solid-liquid separation tank having filter bed and sewage cleaning tank equipped therewith |
| JP4509460B2 (en) * | 2002-06-06 | 2010-07-21 | 株式会社ハウステック | Solid-liquid separation tank having a filter bed and sewage septic tank provided with the same |
| JP2008012467A (en) * | 2006-07-07 | 2008-01-24 | Hitachi Housetec Co Ltd | Water treatment apparatus |
| 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 |
| JP2015180492A (en) * | 2014-03-05 | 2015-10-15 | 大阪瓦斯株式会社 | Apparatus for treating waste water |
| JP2016131939A (en) * | 2015-01-20 | 2016-07-25 | フジクリーン工業株式会社 | Water treatment apparatus |
| CN109694162A (en) * | 2019-02-15 | 2019-04-30 | 周鼎力 | A kind of remodeling septic tank of rural toilet liquid dung and sanitary wastewater processing up to standard |
| WO2023112615A1 (en) * | 2021-12-17 | 2023-06-22 | 株式会社クボタ | Carrier flow tank and septic tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4017331B2 (en) | 2007-12-05 |
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