JPH10328687A - Apparatus for biochemical treatment of organic waste water - Google Patents
Apparatus for biochemical treatment of organic waste waterInfo
- Publication number
- JPH10328687A JPH10328687A JP14278797A JP14278797A JPH10328687A JP H10328687 A JPH10328687 A JP H10328687A JP 14278797 A JP14278797 A JP 14278797A JP 14278797 A JP14278797 A JP 14278797A JP H10328687 A JPH10328687 A JP H10328687A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- sludge
- sedimentation tank
- floor
- sedimentation
- 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
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
- Activated Sludge Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、反応槽と沈殿槽と
好気性消化槽とを有する有機性排水の生物化学的処理装
置に関し、特に、それらの反応槽と沈殿槽と好気性消化
槽を床下に設置する生物化学的処理装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic wastewater biochemical treatment apparatus having a reaction tank, a sedimentation tank, and an aerobic digestion tank. The present invention relates to a biochemical treatment device installed under a floor.
【０００２】[0002]
【従来の技術】従来の有機性排水の水処理において、生
物化学的処理法では、貯留槽と反応槽と沈殿槽などの処
理設備を必要とし、厨房排水で適用している物理化学的
処理の凝集沈殿法では、汚泥発生量が多いために、その
汚泥処理を行う沈殿槽として、高さの高いホッパー形や
汚泥掻寄せ機付きの沈殿槽を適用し、前者の生物化学的
処理法では前記全ての処理設備を、また、後者の凝集沈
殿法にあっても前記大がかりな沈殿槽を何れも床上に設
置しているのが現状である。2. Description of the Related Art In conventional water treatment of organic wastewater, the biochemical treatment method requires treatment equipment such as a storage tank, a reaction tank, and a sedimentation tank. In the coagulation sedimentation method, since a large amount of sludge is generated, as a sedimentation tank for performing the sludge treatment, a high hopper type or a sedimentation tank with a sludge scraper is applied, and in the former biochemical treatment method, At present, all of the processing equipment and the large-scale sedimentation tank are installed on the floor even in the latter coagulation sedimentation method.
【０００３】かかる従来の有機性排水の水処理におい
て、生物化学的処理法では前記全ての処理設備を、ま
た、物理化学的処理の凝集沈殿法では大がかりな沈殿槽
を何れも床上に設置しているため、その設置に要する占
有面積が大きくなって、ビル等のように天井の高さが低
い個所や狭い個所に設置できないという課題があった。
また、物理化学的処理の凝集沈殿法で適用している大が
かりな沈殿槽はコストアップを余儀なくされるという課
題もあった。[0003] In the conventional water treatment of organic wastewater, all the above-mentioned treatment facilities are installed on the floor in the biochemical treatment method, and a large sedimentation tank is installed on the floor in the coagulation sedimentation method of the physicochemical treatment. Therefore, the occupation area required for the installation is large, and there is a problem that it cannot be installed in a place where the ceiling height is low or a narrow place such as a building.
In addition, there is also a problem that a large precipitation tank used in the coagulation sedimentation method of the physicochemical treatment has to increase the cost.
【０００４】そこで、本出願人は、上記課題を解決する
ために、沈殿槽を床上に、且つ、反応槽と好気性消化槽
を床下に配置した生物化学的処理装置を先に開発提供
し、相応の成果を得た。この生物化学的処理装置におい
ても、沈殿槽は床上に設置しており、該沈殿槽を床下に
設置できないのは、以下の理由にあって、それが課題と
なっている。[0004] In order to solve the above-mentioned problems, the present applicant has previously developed and provided a biochemical treatment apparatus in which a sedimentation tank is arranged on the floor and a reaction tank and an aerobic digestion tank are arranged below the floor. The results were commensurate. Also in this biochemical treatment apparatus, the sedimentation tank is installed on the floor, and the sedimentation tank cannot be installed under the floor for the following reason, which is a problem.
【０００５】[0005]
【発明が解決しようとする課題】即ち、一般に沈殿槽
は、処理水中の汚泥を沈殿させるために、他の処理槽よ
りも深くし、また、沈殿汚泥が槽内底部の１箇所に集中
分布するように槽底部を擂り鉢状（ホッパー状）に形成
している。このような形状の沈殿槽を例えば新築建造物
の床下に設置するのは他との納り上で好ましくなく、ま
しては、改修工事においては、既設のピットを沈殿槽と
して利用しなければならないという制約上、水深の深い
沈殿槽を床下に設置することは極めて困難である。That is, in general, the sedimentation tank is made deeper than the other treatment tanks to sediment the sludge in the treatment water, and the sedimentation sludge is concentrated and distributed at one location in the bottom of the tank. Thus, the bottom of the tank is formed in a mortar shape (hopper shape). For example, it is not preferable to install a sedimentation tank of such a shape under the floor of a new building in order to keep it apart from others.Moreover, in renovation work, it is necessary to use the existing pit as a sedimentation tank Due to restrictions, it is extremely difficult to install a deep sedimentation tank below the floor.
【０００６】特に改修工事において、上述のように既設
のピットを沈殿槽として利用する場合、以下のような不
都合が生じるという課題があった。 ピット底面が平面であるため、汚泥が１箇所に集中
沈降せず、汚泥のポンプ移送による回収効率が悪い。ま
たその結果、汚泥が徐々に堆積していき、さらには槽内
が嫌気性となり、悪臭を放つ様になる。 沈殿槽（ピット）から好気性消化槽への汚泥の移送
量が減少し、さらには好気性消化槽から沈殿槽への汚泥
の返送量が減少するため、反応槽内の汚泥濃度が徐々に
低下し、排水処理能力が低下する結果となる。[0006] In particular, in the renovation work, when the existing pit is used as a sedimentation tank as described above, there has been a problem that the following inconvenience occurs. Since the bottom surface of the pit is flat, the sludge does not concentrate and settle at one place, and the recovery efficiency of the sludge by pumping is low. As a result, the sludge gradually accumulates, and furthermore, the inside of the tank becomes anaerobic, giving off a bad smell. The amount of sludge transferred from the sedimentation tank (pit) to the aerobic digestion tank is reduced, and the amount of sludge returned from the aerobic digestion tank to the sedimentation tank is reduced, so the sludge concentration in the reaction tank gradually decreases. As a result, the wastewater treatment capacity is reduced.
【０００７】本発明は上記のような課題を解決するため
になされたもので、沈殿槽を床下に設置するものであり
ながら、沈殿槽内における汚泥の滞留を防止できること
により、該滞留に起因して沈殿槽内の汚泥が嫌気性化す
ることを防止でき、これに伴って悪臭発生をも未然に防
止できる有機性排水の生物化学的処理装置を提供するこ
とを目的とする。これと共に、本発明は、殆どの処理設
備を床下に設置することにより、床上のスペースを有効
利用でき、且つ、反応槽内の汚泥濃度を低下させること
なく、排水処理能力を安定させることができる有機性排
水の生物化学的処理装置を得るこを目的とする。[0007] The present invention has been made to solve the above-mentioned problems, and it is possible to prevent sludge from accumulating in the sedimentation tank while installing the sedimentation tank under the floor. It is therefore an object of the present invention to provide a biochemical treatment apparatus for organic wastewater, which can prevent sludge in a settling tank from being anaerobic and also prevent the generation of offensive odor. At the same time, according to the present invention, by installing most of the treatment equipment under the floor, the space on the floor can be effectively used, and the wastewater treatment capacity can be stabilized without lowering the sludge concentration in the reaction tank. The aim is to obtain a biochemical treatment device for organic wastewater.
【０００８】[0008]
【課題を解決するための手段】本発明に係る有機性排水
の生物化学的処理装置は、有機性排水を導入して生物化
学的処理を行う反応槽と、該反応槽で処理された有機性
排水を導入して汚泥の沈殿処理を行う沈殿槽と、該沈殿
槽で分離された汚泥を導入して該汚泥を再活性化し且つ
前記反応槽に返送可能な好気性消化槽とを有する有機性
排水の生物化学的処理装置において、前記の反応槽と沈
殿槽と好気性消化槽とを床下に設置し、且つ、前記沈殿
槽内に、該槽内の有機性排水を攪拌する攪拌手段を設け
たものである。According to the present invention, there is provided a biochemical treatment apparatus for treating organic wastewater, comprising: a reaction tank for introducing organic wastewater to carry out a biochemical treatment; and an organic wastewater treated in the reaction tank. An organic tank having a sedimentation tank for introducing wastewater to perform sedimentation treatment of sludge, and an aerobic digestion tank capable of introducing sludge separated in the sedimentation tank to reactivate the sludge and return the sludge to the reaction tank In the wastewater biochemical treatment device, the reaction tank, the settling tank, and the aerobic digestion tank are installed under the floor, and, in the settling tank, stirring means for stirring organic wastewater in the tank is provided. It is a thing.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の一形態を説
明する。図１は本発明の実施の形態１による有機性排水
の生物化学的処理装置を示す概略的な断面図である。図
において、１は有機性排水の流入管、２はその流入管１
から流入した厨房排水等の有機性排水を貯留する貯留
槽、３はその貯留槽２から有機性排水を導入して生物化
学的処理を施すための反応槽、４は反応槽３から有機性
排水を導入して汚泥を沈降分離し、上澄液を排出する沈
殿槽、５はその沈殿槽４で分離された汚泥を導入し、好
気性消化処理を行う好気性消化槽（以下、単に消化槽と
いう）である。６は沈殿槽４内の処理後の上澄液を系外
に排水するための排水管である。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. FIG. 1 is a schematic cross-sectional view showing an organic wastewater biochemical treatment apparatus according to Embodiment 1 of the present invention. In the figure, 1 is an inflow pipe for organic wastewater, 2 is its inflow pipe 1
A storage tank for storing organic wastewater such as kitchen wastewater flowing from the reactor, a reaction tank 3 for introducing organic wastewater from the storage tank 2 and performing biochemical treatment, and 4 an organic wastewater from the reaction tank 3 A sedimentation tank for separating and separating the sludge and discharging the supernatant, and an aerobic digestion tank (hereinafter simply referred to as digestion tank) 5 for introducing the sludge separated in the sedimentation tank 4 and performing aerobic digestion treatment. It is). Reference numeral 6 denotes a drain pipe for draining the supernatant liquid after the treatment in the settling tank 4 out of the system.
【００１０】ＧＬは建造物の床面であり、この床面ＧＬ
の下方である所謂床下に、前記の貯留槽２と反応槽３と
沈殿槽４と消化槽５が設置されており、これらの槽２〜
５は底面が平坦に形成されている。GL is the floor of the building, and this floor GL
The storage tank 2, the reaction tank 3, the sedimentation tank 4, and the digestion tank 5 are provided under the floor below the so-called floor.
5 has a flat bottom surface.
【００１１】Ｐ１は貯留槽２から反応槽３に有機性排水
を移送するためのポンプ、Ｐ２は反応槽３から沈殿槽４
に有機性排水を移送するためのポンプ、Ｐ３は沈殿槽４
内で分離された上澄液を屋外の下水管に放流するための
ポンプ、Ｐ４は沈殿槽４内で沈降分離された汚泥を消化
槽５に移送するためのポンプ、Ｐ５は消化槽５内で好気
性消化処理された汚泥を反応槽３に返送するためのポン
プである。P1 is a pump for transferring organic wastewater from the storage tank 2 to the reaction tank 3, and P2 is a pump for transferring the organic waste water from the reaction tank 3 to the precipitation tank 4.
Pump for transferring organic wastewater to the tank.
A pump for discharging the supernatant separated in the inside to an outdoor sewer pipe, a pump P4 for transferring the sludge settled and separated in the sedimentation tank 4 to the digestion tank 5, and a pump P5 for the sludge separated in the digestion tank 5. This is a pump for returning sludge subjected to aerobic digestion treatment to the reaction tank 3.
【００１２】Ｄ１は貯留槽３内に設けられた散気用のデ
ィフューザ、Ｄ２は消化槽５内に設けられたディフュー
ザであり、これらのディフューザＤ１，Ｄ２は図示しな
いブロアに接続されている。D1 is a diffuser provided in the storage tank 3 for aeration, D2 is a diffuser provided in the digestion tank 5, and these diffusers D1 and D2 are connected to a blower (not shown).
【００１３】Ｗ１は沈殿槽４内に設けられて一定時間の
周期で稼動し、該沈殿槽４内の処理水を攪拌する攪拌機
（攪拌手段）である。Ｖ１は貯留槽２内のポンプＰ１か
ら反応槽３内への移送管７に設けられたバルブ、Ｖ２は
前記排水管６に設けられたバルブである。Reference numeral W1 denotes a stirrer (stirring means) provided in the sedimentation tank 4 and operated at regular intervals to stir the treated water in the sedimentation tank 4. V1 is a valve provided on the transfer pipe 7 from the pump P1 in the storage tank 2 to the reaction tank 3, and V2 is a valve provided on the drain pipe 6.
【００１４】次に動作について説明する。まず、通常運
転時の動作およびその問題点について説明する。厨房等
から流入管１を介して床下の貯留槽２内に流入・貯留さ
れた有機性排水は、ポンプＰ１により床下の反応槽３内
に供給移送され、該反応槽３内において、ディフューザ
Ｄ１からの散気により連続曝気される。Next, the operation will be described. First, the operation during normal operation and its problems will be described. The organic wastewater that has flowed into and stored in the underfloor storage tank 2 from the kitchen or the like via the inflow pipe 1 is supplied and transferred into the underfloor reaction tank 3 by the pump P1. The air is continuously aerated by the aeration.
【００１５】その連続曝気による好気性生物処理が施さ
れた有機性排水は、ポンプＰ２により床下の前記反応槽
３から同じく床下の沈殿槽４に移送供給され、該沈殿槽
４内に流入した有機性排水は清澄な上澄液と沈降汚泥と
に分離される。The organic wastewater subjected to the aerobic biological treatment by the continuous aeration is transferred and supplied from the reaction tank 3 under the floor to the precipitation tank 4 under the floor by the pump P2. The wastewater is separated into a clear supernatant liquid and settled sludge.
【００１６】そして、沈殿槽４内の上澄液は、ポンプＰ
３により系外に取り出され、沈降汚泥はポンプＰ４によ
り消化槽５内に供給移送される。この消化槽５内におい
て、沈降汚泥は、ディフューザＤ２からの散気により連
続曝気されて好気性消化処理が施される。The supernatant in the sedimentation tank 4 is pump P
3, the settled sludge is supplied and transferred into the digestion tank 5 by the pump P4. In the digestion tank 5, the settled sludge is continuously aerated by diffused air from the diffuser D2 to be subjected to an aerobic digestion treatment.
【００１７】好気性消化処理が施された前記沈降汚泥
は、汚泥返送用のポンプＰ３によって反応槽３に返送さ
れる。これにより、該反応槽３では好気性生物処理が安
定かつ効率よく行われる。The settled sludge that has been subjected to the aerobic digestion treatment is returned to the reaction tank 3 by a sludge returning pump P3. Thereby, the aerobic biological treatment is performed stably and efficiently in the reaction tank 3.
【００１８】ここで、上記構成の生物化学的処理装置を
実際に連続運転した場合、沈殿槽３の形状が、通常の沈
殿槽のような底部が擂り鉢状ではなく平面であるため、
沈降汚泥が１箇所に集中分布しなくなる。Here, when the biochemical treatment apparatus having the above configuration is actually operated continuously, the shape of the sedimentation tank 3 is not a mortar-shaped bottom but a flat surface as in a normal sedimentation tank.
Settled sludge is no longer concentrated in one place.
【００１９】かかる理由から、ポンプＰ４による汚泥の
回収効率が悪化し、沈殿槽４内に汚泥が滞留蓄積する結
果、該槽内の有機性排水の嫌気性化の進行、反応槽３内
の汚泥濃度減少等の問題が生じる。For this reason, the efficiency of sludge collection by the pump P4 deteriorates, and the sludge accumulates and accumulates in the sedimentation tank 4. As a result, the anaerobicization of the organic wastewater in the tank and the sludge in the reaction tank 3 progress. Problems such as a decrease in concentration occur.
【００２０】そこで、まず、貯留槽２内にあるポンプＰ
１、および沈殿槽４内にある上澄液排出用のポンプＰ４
のそれぞれの運転を順次停止する。この場合、安全を考
慮して、バルブＶ１，２を遮断することが好ましい。Therefore, first, the pump P in the storage tank 2
1, and a pump P4 for discharging the supernatant liquid in the sedimentation tank 4.
Are sequentially stopped. In this case, it is preferable to shut off the valves V1 and V2 in consideration of safety.
【００２１】この状態において、沈殿槽４内の攪拌機Ｗ
１を一定の設定時間だけ稼動させることにより、沈殿槽
４内の有機性排水が攪拌されて均一な攪拌処理状態にな
る。In this state, the stirrer W in the settling tank 4
By operating 1 for a certain set time, the organic wastewater in the sedimentation tank 4 is agitated to be in a uniform stirring state.
【００２２】次いで、移送ポンプＰ４を稼動させること
により、沈殿槽４内で攪拌した有機性排水を消化槽５内
に移送する。この消化槽５では、前記沈殿槽４から移送
された有機性排水の好気性消化処理を行って返送ポンプ
Ｐ５により反応槽３へ汚泥を含む有機性排水を返送す
る。Next, the organic wastewater stirred in the sedimentation tank 4 is transferred into the digestion tank 5 by operating the transfer pump P4. In the digestion tank 5, the organic wastewater transferred from the sedimentation tank 4 is subjected to aerobic digestion treatment, and the organic wastewater containing sludge is returned to the reaction tank 3 by the return pump P5.
【００２３】反応槽３においては、汚泥を含む有機性排
水の好気性消化処理を行い、該処理後の有機性排水を移
送ポンプＰ２によって前記沈殿槽４に移送する。In the reaction tank 3, the organic wastewater containing sludge is subjected to an aerobic digestion treatment, and the treated organic wastewater is transferred to the settling tank 4 by the transfer pump P2.
【００２４】このような処理サイクルを一定時間繰り返
した後、各槽の移送・返送用のポンプＰ１〜Ｐ５および
攪拌機Ｗ１の稼動を一定時間停止させる。これにより、
沈殿槽４内の有機性排水中に含まれた汚泥を沈殿進行さ
せる。その後、通常の運転に戻す。After such a processing cycle is repeated for a certain period of time, the pumps P1 to P5 for transferring and returning each tank and the stirrer W1 are stopped for a certain period of time. This allows
The sludge contained in the organic wastewater in the settling tank 4 is settled. After that, it returns to normal operation.
【００２５】以上のような処理プロセスによって、以下
の作用効果が得られる。 嫌気性傾向にあった沈殿槽４内の有機性排水が好気
性に回復する。 沈殿槽４内を攪拌し、流入水および処理水の排水を
停止して排水を循環させるため、沈殿槽４内の汚泥濃度
が低下する。 また、反応槽３内で低下傾向にあった該槽内汚泥の
濃度が回復する。The following operational effects can be obtained by the above-described processing. The organic wastewater in the sedimentation tank 4 that has tended to be anaerobic is restored to aerobic. Since the inside of the sedimentation tank 4 is agitated, the drainage of the inflow water and the treated water is stopped, and the wastewater is circulated, the sludge concentration in the sedimentation tank 4 decreases. In addition, the concentration of the sludge in the reaction tank 3 which has tended to decrease in the reaction tank 3 recovers.
【００２６】なお、上記のプロセスによる一連の処理
は、貯留槽２に対する有機性排水の流入が最も少ない夜
間に行うことが望ましい。また、沈殿槽４内の有機性排
水を攪拌する手段として、上述した実施の形態では、攪
拌機Ｗ１を適用したが、攪拌ポンプ等のように沈殿槽４
内の有機性排水を攪拌可能なものであれば、如何なる攪
拌手段であってもよい。It is desirable that a series of processes according to the above-described process be performed during the night when the flow of the organic wastewater into the storage tank 2 is minimized. Further, in the above-described embodiment, the stirrer W1 is applied as a means for stirring the organic wastewater in the sedimentation tank 4. However, the stirrer W1 is applied as in the above-described embodiment.
Any stirring means may be used as long as the organic wastewater in the inside can be stirred.
【００２７】[0027]
【発明の効果】以上のように、本発明によれば、反応槽
と沈殿槽と好気性消化槽とを床下に設置し、且つ、前記
沈殿槽内に、該槽内の有機性排水を攪拌する攪拌手段を
設けたので、沈殿槽を床下に設置したものでありなが
ら、該沈殿槽内における汚泥の滞留を防止でき、このた
め、該滞留に起因して沈殿槽内の汚泥が嫌気性化するの
を防止できると共に、それに伴って悪臭発生をも未然に
防止できるという効果がある。また、上述のように、反
応槽と沈殿槽と好気性消化槽を床下に設置することによ
り、床上のスペースを有効利用でき、且つ、反応槽内の
汚泥濃度を低下させることなく、排水処理能力を安定さ
せることができるという効果がある。As described above, according to the present invention, the reaction tank, the sedimentation tank and the aerobic digestion tank are installed under the floor, and the organic wastewater in the tank is stirred in the sedimentation tank. Is provided, the sludge can be prevented from staying in the sedimentation tank while the sedimentation tank is installed under the floor, and the sludge in the sedimentation tank becomes anaerobic due to the stay. In addition to this, there is an effect that it is possible to prevent the generation of offensive odor. Further, as described above, by installing the reaction tank, the sedimentation tank, and the aerobic digestion tank below the floor, the space on the floor can be effectively used, and the wastewater treatment capacity can be reduced without reducing the sludge concentration in the reaction tank. Has the effect of being able to stabilize.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の実施の一形態による有機性排水の生
物化学的処理装置を示す概略的な断面構成図である。FIG. 1 is a schematic cross-sectional configuration diagram showing an organic wastewater biochemical treatment apparatus according to an embodiment of the present invention.
３ 反応槽 ４ 沈殿槽 ５ 消化槽 Ｗ１ 攪拌手段 ＧＬ 床面 3 reaction tank 4 sedimentation tank 5 digestion tank W1 stirring means GL floor
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年９月２４日[Submission date] September 24, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】[0008]
【課題を解決するための手段】本発明に係る有機性排水
の生物化学的処理装置は、有機性排水を導入して生物化
学的処理を行う反応槽と、該反応槽で処理された有機性
排水を導入して汚泥の沈殿処理を行う沈殿槽と、該沈殿
槽で分離された汚泥を導入し、再活性化する好気性消化
槽と、前記再活性化された汚泥を前記反応槽に返送する
手段とを有する有機性排水の生物化学的処理装置におい
て、前記の反応槽と沈殿槽と好気性消化槽とを床下に設
置し、且つ、前記沈殿槽内に、該槽内の有機性排水を攪
拌する攪拌手段を設けたものである。According to the present invention, there is provided a biochemical treatment apparatus for treating organic wastewater, comprising: a reaction tank for introducing organic wastewater to carry out a biochemical treatment; and an organic wastewater treated in the reaction tank. A sedimentation tank that introduces wastewater to settle sludge, and an aerobic digestion that introduces and reactivates sludge separated in the sedimentation tank
A tank and returning the reactivated sludge to the reaction tank
In the biochemical treatment apparatus for organic waste water having means , the reaction tank, the settling tank, and the aerobic digestion tank are installed under the floor, and the organic waste water in the tank is provided in the settling tank. A stirring means for stirring is provided.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１７】好気性消化処理が施された前記沈降汚泥
は、汚泥返送用のポンプＰ５によって反応槽３に返送さ
れる。これにより、該反応槽３では好気性生物処理が安
定かつ効率よく行われる。The settled sludge subjected to the aerobic digestion treatment is returned to the reaction tank 3 by a sludge returning pump P5 . Thereby, the aerobic biological treatment is performed stably and efficiently in the reaction tank 3.
Claims (1)
行う反応槽と、該反応槽で処理された有機性排水を導入
して汚泥の沈殿処理を行う沈殿槽と、該沈殿槽で分離さ
れた汚泥を導入して該汚泥を再活性化し且つ前記反応槽
に返送可能な好気性消化槽とを有する有機性排水の生物
化学的処理装置において、前記の反応槽と沈殿槽と好気
性消化槽とを床下に設置し、且つ、前記沈殿槽内に、該
槽内の有機性排水を攪拌する攪拌手段を設けたことを特
徴とする有機性排水の生物化学的処理装置。1. A reaction tank for introducing an organic wastewater to perform a biochemical treatment, a sedimentation tank for introducing an organic wastewater treated in the reaction tank to perform a sludge sedimentation treatment, In a biochemical treatment apparatus for organic waste water having an aerobic digestion tank capable of reactivating the sludge by introducing the separated sludge and returning the sludge to the reaction tank, the reaction tank and the sedimentation tank are aerobic. A biochemical treatment apparatus for organic wastewater, wherein a digestion tank is installed under the floor, and a stirring means for stirring organic wastewater in the tank is provided in the settling tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14278797A JPH10328687A (en) | 1997-05-30 | 1997-05-30 | Apparatus for biochemical treatment of organic waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14278797A JPH10328687A (en) | 1997-05-30 | 1997-05-30 | Apparatus for biochemical treatment of organic waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10328687A true JPH10328687A (en) | 1998-12-15 |
Family
ID=15323604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14278797A Pending JPH10328687A (en) | 1997-05-30 | 1997-05-30 | Apparatus for biochemical treatment of organic waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10328687A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239630A (en) * | 2005-03-04 | 2006-09-14 | Nishihara Engineering Co Ltd | Sewage treatment system |
-
1997
- 1997-05-30 JP JP14278797A patent/JPH10328687A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239630A (en) * | 2005-03-04 | 2006-09-14 | Nishihara Engineering Co Ltd | Sewage treatment system |
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