JPS6377595A - Activated sludge treating device - Google Patents
Activated sludge treating deviceInfo
- Publication number
- JPS6377595A JPS6377595A JP61218660A JP21866086A JPS6377595A JP S6377595 A JPS6377595 A JP S6377595A JP 61218660 A JP61218660 A JP 61218660A JP 21866086 A JP21866086 A JP 21866086A JP S6377595 A JPS6377595 A JP S6377595A
- Authority
- JP
- Japan
- Prior art keywords
- aeration tank
- tank
- aeration
- carrier
- activated sludge
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 53
- 238000005273 aeration Methods 0.000 claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000002351 wastewater Substances 0.000 claims abstract description 12
- 239000000969 carrier Substances 0.000 claims abstract description 9
- 238000007667 floating Methods 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は流量が変動する有機性廃水の活性汚泥処理装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to an activated sludge treatment device for organic wastewater whose flow rate fluctuates.
有機性廃水の処理装置として、原水を活性汚泥の存在下
に曝気して好気的生物処理を行う活性汚泥処理装置が採
用されている。Activated sludge treatment equipment, which performs aerobic biological treatment by aerating raw water in the presence of activated sludge, is used as an organic wastewater treatment equipment.
従来の活性汚泥処理装置は、廃水を貯留槽に受けてから
一定流量で曝気槽に流入させ、生物処理しているものが
多い。そして貯留槽容量は曝気槽への負荷変動を極力少
なくするために、排出水量の８〜２４時間分を持つとこ
ろが多い。貯留槽内の廃水は流量を連続化および均一化
してほぼ２４時間で生物処理装置へ流入させられる。し
たがって貯留槽は槽容量が大きいにもかかわらず、原水
の均一化のみを目的として低水位から高水位をくり返え
す。In many conventional activated sludge treatment devices, wastewater is received in a storage tank and then flows into an aeration tank at a constant flow rate for biological treatment. In order to minimize load fluctuations on the aeration tank, the storage tank capacity is often 8 to 24 hours' worth of discharged water. The wastewater in the storage tank is allowed to flow into the biological treatment device in approximately 24 hours with a continuous and uniform flow rate. Therefore, even though the storage tank has a large tank capacity, the water level is repeatedly raised from low to high for the sole purpose of equalizing the raw water.
一方、活性汚泥処理装置は標ベハ法、固定床法、あるい
はバルギング防止のための二段法などにより連続的に高
水位の一定レベルで処理されている。On the other hand, activated sludge treatment equipment continuously processes sludge at a constant high water level using a fixed-bed method, a fixed-bed method, or a two-stage method to prevent bulging.
その曝気槽容量は廃水の有機物濃度と負荷によって決ま
るが、標準型（貯留槽容量１日分、原水ＢＯＤ濃度１０
００ｍｇ／Ｑ、曝気槽負荷１ ｋｇ／ｍ’ ・ｄ）での
槽の大きさは原水槽：＠気槽＝１：１であり、はぼ同じ
大きさの槽が必要である。The aeration tank capacity is determined by the wastewater organic matter concentration and load, but the standard type (storage tank capacity for 1 day, raw water BOD concentration 10
00 mg/Q, aeration tank load 1 kg/m' d), the tank size is raw water tank: @ air tank = 1:1, and tanks of approximately the same size are required.
従来の活性汚泥処理装置においては、上記のように曝気
槽の前に原水を貯留するための貯留槽が設けられている
が、この貯留槽は流量が変動する原水の流量を連続化お
よび均一化するために設けられているので、生物処理に
は直接寄与せず、装置の設置面積を大きくする原因にな
っていた。そこで貯留槽を曝気槽として代用すると、■
曝気槽のＢＯＤ負荷変動によるバルキング発生、■貯留
槽内の活性汚液の保持困難、■沈殿槽内のＭＬＳＳ濃度
の上昇による汚泥の濃縮（分離）困難などの問題点があ
る。In conventional activated sludge treatment equipment, a storage tank is provided in front of the aeration tank to store raw water as described above, but this storage tank is used to make the flow rate of raw water continuous and uniform, even though the flow rate fluctuates. Since it is provided for the purpose of biological treatment, it does not directly contribute to biological treatment and causes an increase in the installation area of the device. Therefore, if the storage tank is used as an aeration tank, ■
There are problems such as bulking due to BOD load fluctuations in the aeration tank, (1) difficulty in retaining activated sewage in the storage tank, and (2) difficulty in concentrating (separating) sludge due to an increase in the MLSS concentration in the settling tank.
この発明は上記問題点を解決し、貯留槽を曝気槽と兼用
して、全体の装置を小型化し、しかもバルキングの発生
を防止して効率よく安定した処理を行うことができる活
性汚泥処理装置を得ることを目的としている。This invention solves the above-mentioned problems and provides an activated sludge treatment device that uses the storage tank as an aeration tank, downsizes the entire device, prevents bulking, and performs efficient and stable treatment. The purpose is to obtain.
この発明は、流量変動のある有機性廃水の活性汚泥処理
装置において、生物の付着した浮上性担体を入れ、かつ
原水を一時貯留するとともに曝気を行う担体曝気槽と、
担体曝気槽の曝気液を活性汚泥の存在下に曝気する曝気
槽とを有する活性汚泥処理装置である。This invention provides an activated sludge treatment device for organic wastewater with flow rate fluctuations, which includes a carrier aeration tank that contains floating carriers with attached organisms, temporarily stores raw water, and performs aeration;
This is an activated sludge treatment device having an aeration tank for aerating the aeration liquid of the carrier aeration tank in the presence of activated sludge.
本発明において処理対象となる廃水は有機性の廃水であ
って、生活廃水、産業廃水などその種類は制限されない
が、時間によって流量が変動するものである。The wastewater to be treated in the present invention is organic wastewater, and its type is not limited to domestic wastewater, industrial wastewater, etc., but the flow rate varies depending on time.
担体曝気槽はこれらの廃水を直接導入し、一時貯留して
流量を連続化および均一化するとともに、貯留している
間に曝気により生物処理をも行うもので、従来の貯留槽
と同様に原水の流量変動により水位が高水位から低水位
まで変動する状態で曝気を行うようになっており、水位
変動による汚泥の流出を防止するために浮上性担体を入
れ、これに生物が付着されている。浮上性担体は無機質
のものでも有機質のものでもよく１例えばスポンジもし
くはプラスチックの粒状物または成形物などが使用でき
、大きさは５ｍｍ以上がよく、固液分離の面からは１０
＋ｍ以上が望ましい。担体曝気槽の大きさはバルキング
を防ぐために５ ｋｇ−ＢＯＤ／ｍ’・ｄ以上、好まし
くは１０ ｋｇ−ＢＯＤ／ｍ”・ｄ程度以上とするのが
望ましい。浮上性担体の充填量は容積比で５〜３０％と
するのが望ましい。充填量が多いと糸状性汚泥が生成し
てバルキングの原因になるし。The carrier aeration tank directly introduces this wastewater and temporarily stores it to make the flow continuous and uniform, and also performs biological treatment through aeration while it is stored. Aeration is performed while the water level fluctuates from high to low due to fluctuations in flow rate, and to prevent sludge from flowing out due to fluctuations in water level, floating carriers are placed and organisms are attached to them. . The buoyant carrier may be inorganic or organic.For example, sponge or plastic particles or molds can be used, and the size is preferably 5 mm or more, and from the standpoint of solid-liquid separation, the size is 10 mm or more.
+m or more is desirable. The size of the carrier aeration tank is desirably 5 kg-BOD/m'·d or more, preferably about 10 kg-BOD/m''·d or more to prevent bulking.The filling amount of the buoyant carrier is determined by the volume ratio. It is desirable that the filling amount be 5 to 30%.If the filling amount is too large, filamentous sludge will be generated and cause bulking.
また少ないとＢＯＤの分解性が悪くなる。In addition, if the amount is too low, the decomposability of BOD will deteriorate.
曝気槽は上記担体曝気槽の曝気液を活性汚泥の存在下に
曝気するのもので、通常の活性汚泥処理に使用されてい
る曝気槽が使用できるが、従来の貯留槽を区分して担体
曝気槽および曝気槽としてもよい。この場合曝気槽も流
量変動するが、このような流量変動する曝気槽は、流量
変動のない通常の曝気槽と組合せて使用することもでき
る。曝気槽の容積は活性汚泥の汚泥令３以上、好ましく
は５以上にすると、担体曝気槽において生成した分散菌
体を改質して沈降性の良い活性汚泥を生成させることが
できる。The aeration tank is used to aerate the aerated liquid in the carrier aeration tank in the presence of activated sludge.Although the aeration tank used for normal activated sludge treatment can be used, the conventional storage tank can be divided into carrier aeration tanks. It may also be used as a tank or an aeration tank. In this case, the aeration tank also fluctuates in flow rate, but such an aeration tank in which the flow rate fluctuates can also be used in combination with a normal aeration tank in which the flow rate does not fluctuate. When the volume of the aeration tank is set to a sludge age of activated sludge of 3 or more, preferably 5 or more, the dispersed bacterial cells produced in the carrier aeration tank can be modified to produce activated sludge with good settling properties.
本発明の活性汚泥処理装置においては、担体曝気槽に直
接原水を流入させて一時貯留するとともに、曝気を行っ
て浮上性担体に付着した生物の作用により一部の有機物
を分解する。ここでは原水濃度が高いため分散菌体が生
成し、有機物分解速度は大きい。そして担体曝気槽の曝
気液の一部を連続して曝気槽に流入させ、ここで活性汚
泥と混合して曝気を行い、残留する有機物を分解する。In the activated sludge treatment apparatus of the present invention, raw water is allowed to flow directly into the carrier aeration tank and is temporarily stored therein, and at the same time, aeration is performed to decompose some organic matter by the action of organisms attached to the floating carrier. Since the raw water concentration is high here, dispersed bacterial cells are generated and the rate of organic matter decomposition is high. A portion of the aeration liquid in the carrier aeration tank is then continuously flowed into the aeration tank, where it is mixed with activated sludge and aerated to decompose the remaining organic matter.
曝気槽では担体曝気槽で生成した分散菌体は改質されて
、沈降性のよい活性汚泥となる。そして曝気槽に続いて
設置される沈殿槽において固液分離され、分離液は処理
水として排出され１分離汚泥は曝気槽に返送される。In the aeration tank, the dispersed bacterial cells produced in the carrier aeration tank are reformed to become activated sludge with good sedimentation properties. Solid-liquid separation is then carried out in a settling tank installed following the aeration tank, the separated liquid is discharged as treated water, and the separated sludge is returned to the aeration tank.
本発明では原水が直接流入する曝気槽に、浮上性の生物
担体を入れておくことにより、担体曝気槽では微生物を
担体に付着させて保持でき、これにより効率のよい生物
処理が可能となり、後続の生物処理の負荷を軽減でき、
全体の装置がコンパクトになる。特に担体曝気槽に流入
する原水量が変動して、槽内の水位が変化しても浮上性
担体を使用しているので、水中に生物を保持できる。充
填材を槽内に固定した装置では、水位によっては充填材
が水面上に出てしまい、また、槽内に単に微生物を浮遊
させる装置では、水位によって汚泥が流出してしまうが
、このようなことは防止される。In the present invention, by placing floating biological carriers in the aeration tank into which raw water directly flows, microorganisms can be attached and retained on the carrier in the carrier aeration tank, which enables efficient biological treatment and subsequent can reduce the burden of biological treatment,
The entire device becomes compact. In particular, even if the amount of raw water flowing into the carrier aeration tank fluctuates and the water level in the tank changes, organisms can be retained in the water because floating carriers are used. In devices where the filler is fixed in the tank, depending on the water level, the filler will rise above the water surface, and in devices that simply suspend microorganisms in the tank, the sludge will flow out depending on the water level. This will be prevented.
また担体曝気槽で原水量の変動を吸収するので。Also, the carrier aeration tank absorbs fluctuations in the amount of raw water.
後続の曝気槽あるいは沈殿槽への供給水量は均一化でき
、これにより沈殿槽での負荷も均一化され、固液分離が
安定する。そして浮上性担体の微生物で処理しているの
で、水質も均質化され、後続の曝気槽の処理も安定する
。The amount of water supplied to the subsequent aeration tank or settling tank can be made uniform, thereby making the load on the settling tank uniform and stabilizing solid-liquid separation. Since the treatment is carried out using microorganisms on floating carriers, the water quality is homogenized and subsequent treatment in the aeration tank is stabilized.
以下、本発明を図面の実施例について説明する。 Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.
第１図はこの発明の一実施例による活性汚泥処理装置を
示す系統図である。図において、１は担体曝気槽、２は
曝気槽、３は沈殿槽であり、管４゜５によりシリーズに
連絡している。担体曝気槽１は貯留槽を兼ねて原水管６
が直接連絡し、内部には生物が付着した浮上性担体７が
入れられ、底部には散気管８が設けられている。曝気槽
２には底部に散気管９が設けられ、また沈殿槽３の底部
から返送汚泥管１０が管４を介して連絡している。FIG. 1 is a system diagram showing an activated sludge treatment apparatus according to an embodiment of the present invention. In the figure, 1 is a carrier aeration tank, 2 is an aeration tank, and 3 is a settling tank, which are connected to the series by a pipe 4.5. The carrier aeration tank 1 also serves as a storage tank and is connected to the raw water pipe 6.
are in direct communication with each other, a floating carrier 7 with living organisms attached is placed inside, and an aeration pipe 8 is provided at the bottom. An aeration pipe 9 is provided at the bottom of the aeration tank 2, and a return sludge pipe 10 is connected to the bottom of the settling tank 3 via a pipe 4.
沈！！２槽３の上部には処理水管１１が連絡している。Shen! ! A treated water pipe 11 is connected to the upper part of the two tanks 3.
１２はポンプである。12 is a pump.
上記の構成において、有機性廃水は原水管６から直接担
体曝気槽１に導入されて一時貯留され。In the above configuration, organic wastewater is directly introduced into the carrier aeration tank 1 from the raw water pipe 6 and temporarily stored therein.
ここで生物が付着した浮上性担体７と混合されて、散気
管８から吹出される空気によって曝気され、生物処理を
受ける。担体曝気槽１では液面の変動があっても浮上担
体は常に液面下にあり、廃水と接触を保って、生物処理
が継続する。Here, it is mixed with the buoyant carrier 7 to which living organisms have adhered, and is aerated with air blown out from the aeration tube 8 to undergo biological treatment. In the carrier aeration tank 1, even if the liquid level fluctuates, the floating carriers are always below the liquid surface, maintain contact with the wastewater, and continue biological treatment.
担体曝気Ｍｌの曝気液はポンプにより一定量ずつ管４か
ら取出され、ここで返送汚泥管１０から返送される活性
汚泥と混合されて曝気槽２に送入され、ここで散気管９
から散気される空気により曝気され２通常の活性汚泥処
理を受ける。曝気槽２は一定液面で一定の滞留時間に維
持され、曝気液は一定量ずつ管５から沈殿槽３に流入す
る。沈殿槽３では沈殿分離により、分離水が処理水管１
１から排出され、沈殿汚泥は返送汚泥管１０から返送さ
れる。The aeration liquid of the carrier aeration Ml is taken out in fixed quantities from the pipe 4 by a pump, mixed with the activated sludge returned from the return sludge pipe 10, and sent to the aeration tank 2, where it is passed through the aeration pipe 9.
It is aerated with air diffused from 2 and undergoes normal activated sludge treatment. The aeration tank 2 is maintained at a constant liquid level for a constant residence time, and the aeration liquid flows into the settling tank 3 from the pipe 5 in constant amounts. Sedimentation tank 3 separates the separated water into treated water pipe 1.
1, and the settled sludge is returned from the return sludge pipe 10.
第２図は他の実施例の系統図である。この実施例では従
来の貯留槽を２区分して、担体曝気槽１および曝気槽２
ａとしてシリーズに連絡され、それぞれ貯留槽を兼ね散
気管８，８ａが設けられている。そしそ担体曝気槽１に
は浮上性担体７を入れて原水管６が連絡し、曝気槽２ａ
には管４および返送汚泥管１０が連絡している。FIG. 2 is a system diagram of another embodiment. In this embodiment, a conventional storage tank is divided into two parts, carrier aeration tank 1 and aeration tank 2.
A is connected to the series, and diffuser pipes 8 and 8a are provided, each of which also serves as a storage tank. A floatable carrier 7 is placed in the carrier aeration tank 1, and a raw water pipe 6 is connected to the aeration tank 2a.
A pipe 4 and a return sludge pipe 10 communicate with the sludge.
上記の構成において、原水管６から原水が担体曝気槽１
に導入されて第１図の場合と同様に一時貯留および曝気
され、その曝気液の一部は曝気槽２ａに流入して返送汚
泥管１０からの返送汚泥と混合され、通常の活性汚泥処
理を受ける。担体曝気槽１および曝気槽２ａはともに貯
留槽としても利用されるため水位は変動し、曝気液は曝
気槽２ａから一定流量で曝気槽２に送られ、第１図と同
様に通常の活性汚泥処理を受ける。曝気槽２ａでは担体
曝気槽１で生成した分散菌体の改質が行われる。In the above configuration, raw water is supplied from the raw water pipe 6 to the carrier aeration tank 1.
A part of the aerated liquid flows into the aeration tank 2a and is mixed with the return sludge from the return sludge pipe 10, and is then used for normal activated sludge treatment. receive. Both the carrier aeration tank 1 and the aeration tank 2a are also used as storage tanks, so the water level fluctuates, and the aeration liquid is sent from the aeration tank 2a to the aeration tank 2 at a constant flow rate. undergo processing. In the aeration tank 2a, the dispersed microbial cells produced in the carrier aeration tank 1 are modified.
各槽の活性汚泥濃度は、担体曝気槽１では原水中ＢＯＤ
が汚泥転換した濃度であり、原水ＳＳ＋（原水ＢＯＤ
Ｘ Ｏ，４〜０．７）程度になる。曝気槽２，２ａの汚
泥濃度は返送汚泥を一定とするので変動は少なく。The activated sludge concentration in each tank is BOD in the raw water in carrier aeration tank 1.
is the concentration of sludge conversion, and raw water SS+ (raw water BOD
X O, 4 to 0.7). Since the sludge concentration in the aeration tanks 2 and 2a is constant for the returned sludge, there is little variation.
ＭＬＳ３２０００〜８０００＋ａｇ／Ｑ程度である。沈
殿槽３内の汚泥量は、担体曝気槽１および曝気槽２ａの
汚泥が曝気槽２および沈殿槽３内に濃縮されるので、約
２倍量になるが、担体曝気槽１からの汚液量が少ないの
で沈殿分離が可能な範囲である。MLS is about 32000-8000+ag/Q. The amount of sludge in the settling tank 3 is approximately doubled because the sludge in the carrier aeration tank 1 and the aeration tank 2a is concentrated in the aeration tank 2 and the settling tank 3, but the amount of sludge from the carrier aeration tank 1 is Since the amount is small, precipitation separation is possible.
なお、第２図において返送汚泥管１０は担体曝気槽１に
１０ａのように連絡してもよく、また曝気槽２ａで有機
物の除去が可能なときは曝気槽２を省略してもよい。In FIG. 2, the return sludge pipe 10 may be connected to the carrier aeration tank 1 as shown in 10a, or the aeration tank 2 may be omitted if organic matter can be removed in the aeration tank 2a.
本発明によれば、貯留槽と兼用する担体曝気槽を設けた
ので、全体の装置を小型化して設置面積を小さくし、し
かもバルキングの発生を防止して効率よく安定した処理
を行うことが可能である。According to the present invention, since a carrier aeration tank is provided that also serves as a storage tank, the entire device can be downsized and the installation area can be reduced, and bulking can be prevented to perform efficient and stable processing. It is.
第１図および第２図はそれぞれ別の実施例の系統図であ
る。
各図中、同一符号は同一または相当部分を示し。
１は担体曝気槽、２’、２ａは曝気槽、３は沈殿槽であ
る。
代理人 弁理士 柳 原 成
第１図
３： ５”ｊ：、屓【１
第２図FIG. 1 and FIG. 2 are system diagrams of different embodiments, respectively. In each figure, the same reference numerals indicate the same or corresponding parts. 1 is a carrier aeration tank, 2' and 2a are aeration tanks, and 3 is a settling tank. Agent Patent Attorney Sei Yanagihara Figure 1 3: 5”j:, 屓 [1 Figure 2
Claims (3)
おいて、生物の付着した浮上性担体を入れ、かつ原水を
一時貯留するとともに曝気を行う担体曝気槽と、担体曝
気槽の曝気液を活性汚泥の存在下に曝気する曝気槽とを
有する活性汚泥処理装置。(1) In activated sludge treatment equipment for organic wastewater with flow rate fluctuations, there is a carrier aeration tank in which floatable carriers with attached organisms are placed, raw water is temporarily stored, and aeration is performed, and the aeration liquid in the carrier aeration tank is activated. An activated sludge treatment device having an aeration tank that performs aeration in the presence of sludge.
たは成形物である特許請求の範囲第１項記載の活性汚泥
処理装置。(2) The activated sludge treatment apparatus according to claim 1, wherein the carrier is a granular or molded product of sponge or plastic.
留槽を兼ねないものである特許請求の範囲第１項または
第２項記載の活性汚泥処理装置。(3) The activated sludge treatment apparatus according to claim 1 or 2, wherein the aeration tank also serves as a storage tank or (and) does not serve as a storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61218660A JPS6377595A (en) | 1986-09-17 | 1986-09-17 | Activated sludge treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61218660A JPS6377595A (en) | 1986-09-17 | 1986-09-17 | Activated sludge treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6377595A true JPS6377595A (en) | 1988-04-07 |
Family
ID=16723425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61218660A Pending JPS6377595A (en) | 1986-09-17 | 1986-09-17 | Activated sludge treating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6377595A (en) |
Cited By (11)
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|---|---|---|---|---|
| JP2000279994A (en) * | 1999-03-29 | 2000-10-10 | Shinko Pantec Co Ltd | Nitrification and denitrification treatment and apparatus therefor |
| JP2001205290A (en) * | 1999-11-19 | 2001-07-31 | Kuraray Co Ltd | Method and apparatus for wastewater treatment |
| JP2001347284A (en) * | 2000-06-08 | 2001-12-18 | Kuraray Co Ltd | Wastewater treatment method |
| JP2006082024A (en) * | 2004-09-16 | 2006-03-30 | Kurita Water Ind Ltd | Biological treatment apparatus |
| JP2007105580A (en) * | 2005-10-12 | 2007-04-26 | Kurita Water Ind Ltd | Method and apparatus for biologically treating organic drainage |
| JP2007160233A (en) * | 2005-12-14 | 2007-06-28 | Kurita Water Ind Ltd | Organic matter-containing wastewater treatment apparatus and method |
| WO2007086240A1 (en) * | 2006-01-25 | 2007-08-02 | Kuraray Co., Ltd. | Method of treating drainage water using fixation support |
| JP2007196105A (en) * | 2006-01-25 | 2007-08-09 | Maezawa Kasei Ind Co Ltd | Apparatus for treating wastewater such as dye wastewater |
| JPWO2006009125A1 (en) * | 2004-07-16 | 2008-05-01 | 株式会社クラレ | Wastewater treatment method with little excess sludge extraction |
| JP2008142632A (en) * | 2006-12-11 | 2008-06-26 | Unitika Ltd | Method for treating waste water biologically |
| JP2009119315A (en) * | 2007-11-12 | 2009-06-04 | Maezawa Kasei Ind Co Ltd | Wastewater treatment apparatus |
-
1986
- 1986-09-17 JP JP61218660A patent/JPS6377595A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000279994A (en) * | 1999-03-29 | 2000-10-10 | Shinko Pantec Co Ltd | Nitrification and denitrification treatment and apparatus therefor |
| JP2001205290A (en) * | 1999-11-19 | 2001-07-31 | Kuraray Co Ltd | Method and apparatus for wastewater treatment |
| JP4667583B2 (en) * | 1999-11-19 | 2011-04-13 | 株式会社クラレ | Waste water treatment apparatus and waste water treatment method |
| JP2001347284A (en) * | 2000-06-08 | 2001-12-18 | Kuraray Co Ltd | Wastewater treatment method |
| JPWO2006009125A1 (en) * | 2004-07-16 | 2008-05-01 | 株式会社クラレ | Wastewater treatment method with little excess sludge extraction |
| JP4492268B2 (en) * | 2004-09-16 | 2010-06-30 | 栗田工業株式会社 | Biological treatment equipment |
| JP2006082024A (en) * | 2004-09-16 | 2006-03-30 | Kurita Water Ind Ltd | Biological treatment apparatus |
| JP2007105580A (en) * | 2005-10-12 | 2007-04-26 | Kurita Water Ind Ltd | Method and apparatus for biologically treating organic drainage |
| JP2007160233A (en) * | 2005-12-14 | 2007-06-28 | Kurita Water Ind Ltd | Organic matter-containing wastewater treatment apparatus and method |
| WO2007086240A1 (en) * | 2006-01-25 | 2007-08-02 | Kuraray Co., Ltd. | Method of treating drainage water using fixation support |
| US7879239B2 (en) | 2006-01-25 | 2011-02-01 | Kuraray Co., Ltd. | Wastewater treatment method using immobilized carrier |
| JP2007196105A (en) * | 2006-01-25 | 2007-08-09 | Maezawa Kasei Ind Co Ltd | Apparatus for treating wastewater such as dye wastewater |
| JP2008142632A (en) * | 2006-12-11 | 2008-06-26 | Unitika Ltd | Method for treating waste water biologically |
| JP2009119315A (en) * | 2007-11-12 | 2009-06-04 | Maezawa Kasei Ind Co Ltd | Wastewater treatment apparatus |
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