JPH0717438Y2 - Organic wastewater treatment equipment - Google Patents

Organic wastewater treatment equipment

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Publication number
JPH0717438Y2
JPH0717438Y2 JP1990001925U JP192590U JPH0717438Y2 JP H0717438 Y2 JPH0717438 Y2 JP H0717438Y2 JP 1990001925 U JP1990001925 U JP 1990001925U JP 192590 U JP192590 U JP 192590U JP H0717438 Y2 JPH0717438 Y2 JP H0717438Y2
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JP
Japan
Prior art keywords
treated water
tank
primary treated
water
pipe
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.)
Expired - Lifetime
Application number
JP1990001925U
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Japanese (ja)
Other versions
JPH0394998U (en
Inventor
克之 片岡
Original Assignee
荏原インフイルコ株式会社
株式会社荏原総合研究所
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Priority to JP1990001925U priority Critical patent/JPH0717438Y2/en
Publication of JPH0394998U publication Critical patent/JPH0394998U/ja
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Publication of JPH0717438Y2 publication Critical patent/JPH0717438Y2/en
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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、下水,し尿,各種産業廃水などの有機性汚水
を極めて高度に浄化することができる新装置に関し、特
に活性汚泥法の欠点を大幅に解消することができる装置
に関するものである。
[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a new device capable of extremely highly purifying organic sewage such as sewage, night soil, and various industrial wastewater, and in particular, the drawbacks of the activated sludge method The present invention relates to a device that can be largely eliminated.

〔従来の技術〕[Conventional technology]

活性汚泥法の最大の欠点は、曝気槽に後続する最終沈殿
池における活性汚泥の沈降性状が極めて不安定であり、
SSが沈殿池からキャリオーバし、放流水質を悪化させて
しまう点である。このため、処理場の放流水のBODは15
〜20mg/l,SSは50〜70mg/l程度にすぎず、このような水
質の処理水が流入する河川,湖沼等の汚濁はますます進
行し、処理の本来の目的である公共用水域の水質保全は
到底達成できないのが、まぎれもない現実である。
The biggest drawback of the activated sludge method is that the sedimentation property of the activated sludge in the final settling tank following the aeration tank is extremely unstable,
This is the point at which SS will carry over from the settling basin and deteriorate the quality of the discharged water. Therefore, the BOD of the effluent of the treatment plant is 15
〜20mg / l, SS is only about 50〜70mg / l, and pollution of rivers, lakes and marshes into which treated water of such quality inflows more and more, and The fact that water quality conservation cannot be achieved at all is an unmistakable reality.

このような問題に対処するために、最近、下水の最終沈
殿池越流水を砂過したり、アンスラサイトを充填した
床の下部からエアレーションしつつSSを過する好気
性生物床法が検討されている。
In order to deal with such a problem, recently, an aerobic biological bed method has been studied in which the overflow water of the final sewage sedimentation tank is sanded or the SS is aerated while aerating from the bottom of the bed filled with anthracite. There is.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

しかしながら、前記砂過や好気性生物床法にも次の
ような重大な欠点があるため、普及していない。
However, the sand filtration and the aerobic biological bed method have the following serious drawbacks and are not widely used.

即ち、 最終沈殿池からSSが多量にキャリオーバすると、床
がたちまち目詰まりし、運転続行が不可能になる。
That is, if a large amount of SS carries over from the final settling tank, the floor will be clogged immediately and it will be impossible to continue operation.

床の目詰まりを解消する洗浄時に、洗浄用水として
過水を使用しなければならないので、過水の生産効
率が悪い。
Since the overwater must be used as the washing water during the washing for clearing the floor clogging, the overwater production efficiency is poor.

砂過又は生物床法によっても、過水のBODを安
定して1〜2mg/lにまですることは到底不可能であり、
過水のBODは5〜15mg/l程度にすぎず、公共用水域の
水質保全には全く不充分である。
Even by sand filtration or biological bed method, it is completely impossible to stabilize the BOD of the superfluous water to 1 to 2 mg / l.
The BOD of overwater is only about 5 to 15 mg / l, which is completely unsatisfactory for the conservation of water quality in public water bodies.

最終沈殿池からSSが多量にキャリオーバしない正常時
でも、最終沈殿池からは30〜70mg/lのSSが過槽に流入
するので、1日に1〜2回という頻繁な床洗浄を必要
とし、さらに長時間の過継続が可能な(例えば3〜4
日に1回の洗浄ですむような)方法が切望されている。
Even in a normal situation where a large amount of SS does not carry over from the final settling tank, 30 to 70 mg / l of SS flows into the excess tank from the final settling tank, so frequent floor cleaning is required once or twice a day. It is possible to continue for a long time (for example, 3 to 4).
There is a long-felt need for a method that requires only one wash per day.

本考案は、前記従来技術の欠点を完全に解決することを
課題とするものである。
The present invention aims to completely solve the drawbacks of the prior art.

〔課題を解決するための手段〕[Means for Solving the Problems]

本考案は、有機性汚水を生物処理するための曝気槽と、
上方部に浮上材層を保持し下方部を沈殿部として該沈
殿部に前記曝気槽からのスラリ流入部を設けると共に槽
上部に1次処理水流出部を設けた処理槽と、該処理槽の
1次処理水流出部と連通する粒状材の床を設けた好
気性生物床装置とからなることを特徴とする有機性汚
水の処理装置であり、また、前記処理槽の1次処理水流
出部と前記好気性生物床装置との連通路に貯留タンク
を介在せしめ、該貯留タンクの1次処理水を前記好気性
生物床装置内の床下部へ圧入する流路を付設したこ
とを特徴とする有機性汚水の処理装置である。
The present invention is an aeration tank for biological treatment of organic wastewater,
A treatment tank having a floating material layer in the upper portion and a lower portion as a sedimentation portion, a slurry inflow portion from the aeration tank being provided in the sedimentation portion, and a primary treated water outflow portion in the upper portion of the tank; An apparatus for treating organic sewage, comprising an aerobic biological bed apparatus provided with a bed of granular material communicating with the primary treated water outflow section, and the primary treated water outflow section of the treatment tank. A storage tank is interposed in a communication passage between the aerobic biological bed apparatus and the aerobic biological bed apparatus, and a flow path for press-fitting the primary treated water of the storage tank into a lower floor of the aerobic biological bed apparatus is provided. It is a treatment device for organic wastewater.

〔作用〕[Action]

上記のように構成された曝気槽に、まず下水などの有機
性汚水が流入し、生物処理を受ける。生物処理として
は、BOD除去だけでなく、生物脱リン工程や硝化脱窒工
程を組み込んだものであっても当然かまわない。生物処
理を受けて曝気槽から流出する活性汚泥スラリは、次の
処理槽の下方部の沈殿部に流入し、活性汚泥の大部分が
沈殿分離される。
First, organic sewage such as sewage flows into the aeration tank configured as described above, and undergoes biological treatment. As the biological treatment, not only BOD removal but also a biological dephosphorization process or nitrification denitrification process may be incorporated. The activated sludge slurry that has undergone biological treatment and flows out from the aeration tank flows into the sedimentation section below the next treatment tank, and most of the activated sludge is separated by sedimentation.

さて、沈殿部において沈殿しきれなかった微細SSは、上
向流で上方部の浮上材層に流入してゆき、過除去さ
れ1次処理水となる。また浮上材層の材の表面には
生物膜が発達しているので、接触沈殿及び過作用によ
ってSSが効果的に除去されると同時に溶解性BODも好気
性あるいは嫌気性の生物膜によって除去され、1次処理
水の水質は著しく改善される。例えば下水処理の場合、
安定してBOD,SSを5〜15gm/lにすることができる。
Now, the fine SS that could not be completely settled in the settling part flows upward into the levitation material layer in the upper part and is excessively removed to become the primary treated water. In addition, since a biofilm has developed on the surface of the material of the floating material layer, SS is effectively removed by contact precipitation and excessive action, and at the same time soluble BOD is also removed by the aerobic or anaerobic biofilm. The quality of the primary treated water is significantly improved. For example, in the case of sewage treatment,
BOD and SS can be stably set to 5 to 15 gm / l.

以上のような構成により、活性汚泥の沈降性が悪化した
場合でも、常にBOD,SSの少ない1次処理水を得ることが
できる。
With the above configuration, even if the settling property of activated sludge deteriorates, it is possible to always obtain the primary treated water with low BOD and SS.

しかして、処理層の浮上材層の上部から流出してくる
1次処理水は、1次処理水流出部から好気性生物床装
置の上部又は下部に流入し、好気性条件下で床を下向
流又は上向流で流過し、1次処理水中に残留している少
量のSS,BOD,NH4-Nは、床内において高度に除去され、
SS,BOD,NH4-Nがいずれも1〜3mg/l程度に高度に浄化さ
れた最終処理水が得られる。
Then, the primary treated water flowing out from the upper part of the flotation material layer of the treated layer flows into the upper part or the lower part of the aerobic biological bed apparatus from the primary treated water outflow part and goes down the floor under aerobic conditions. A small amount of SS, BOD, NH 4 -N remaining in the primary treated water flowing through in countercurrent or upflow is highly removed in the bed,
SS, BOD, and NH 4 -N are all highly purified final treated water of about 1 to 3 mg / l.

この最終処理水は、河川等の公共用水域に放流すること
ができ、従来の下水処理の放流水と異なり、通常の都市
河川水の水質よりも清浄であるので、河川の浄化を著し
く促進することができる。即ち、本考案の上記最終処理
水は、従来、都市河川の最大の汚濁源の一つであった下
水処理水を、逆に都市河川の浄化水源として活用すると
ができ、生活環境保全に寄与するところ極めて大であ
る。
This final treated water can be discharged to public water bodies such as rivers, and unlike the discharge water of conventional sewage treatment, it is purer than the water quality of ordinary city river water, thus significantly promoting river purification. be able to. That is, the final treated water of the present invention can utilize the sewage treated water, which has been one of the largest pollution sources of urban rivers, as a purified water source of urban rivers, and contributes to the conservation of the living environment. However, it is extremely large.

この好気性生物床装置の床へ流入する1次処理水
は、SS,BODなどが少量となっているために、下向流通水
によっても床の目詰まりは極めて緩慢であり、長時
間、床の洗浄が不要であり、維持管理が容易である。
また、床への通水を上向流で行う場合も、SSが少ない
ので床下部の支持床の目詰まりが起きないという重要
な特徴がある。
Since the primary treated water that flows into the floor of this aerobic biological floor system has a small amount of SS, BOD, etc., the floor clogging is extremely slow even with downward circulating water, and the floor is treated for a long time. No need for cleaning and maintenance is easy.
Also, when water is passed through the floor in an upward flow, there is an important feature that the support floor below the floor does not become clogged because the SS is low.

さて、上記のような処理を続けるにつれて、浮上材層
におけるSS蓄積量の増加,生物膜の増殖に起因して、
過抵抗が上昇してくるので、浮上材層の洗浄を行う。
Now, as the above treatment is continued, due to the increase in the amount of SS accumulated in the floating material layer and the proliferation of biofilm,
As the over resistance increases, the levitation material layer is washed.

洗浄方法としては種々の方法が考えられ、任意の方法を
採用して良いが、例えば次のような方法が推奨できる。
Various methods are conceivable as the cleaning method, and any method may be adopted. For example, the following method can be recommended.

即ち、活性汚泥スラリの流入を行っている状態で、散気
装置からの散気量を急増させて、浮上材層内で激しい
撹乱水流(気液混相流)を発生させる。この激しい撹乱
水流によって、材層内のSSは洗い出され、洗浄排水に
同伴されて流出する。この洗浄排水は、曝気槽の前段の
最初沈澱池に導かれ、水中のSSが沈降分離されるか、あ
るいは曝気槽に導かれたのち再び処理槽に至って水中の
SSが沈降分離される。この結果、浮上材層の洗浄に、
処理槽から流出する1次処理水又は好気性生物床装置
から流出する最終処理水などを使用する必要がなくな
り、合理的な洗浄ができる。
That is, while the activated sludge slurry is flowing in, the amount of air diffused from the air diffuser is rapidly increased to generate a violent disturbing water flow (gas-liquid mixed phase flow) in the floating material layer. Due to this violently disturbed water flow, the SS in the timber layer is washed out, and is discharged along with the cleaning drainage. This cleaning wastewater is introduced to the first settling tank in the previous stage of the aeration tank, and SS in the water is separated by sedimentation, or is introduced to the aeration tank and then reaches the treatment tank again to reach the treatment tank.
SS is settled and separated. As a result, for cleaning the floating material layer,
There is no need to use the primary treated water flowing out from the treatment tank or the final treated water flowing out from the aerobic biological bed apparatus, and rational cleaning can be performed.

次に、好気性生物床装置の床における目詰まりの進
行は極めて緩慢ではあるが、6〜7日間程過を続ける
に従って、過抵抗が所定値(500mmH2O程度)に達する
ので、次のような方法で洗浄を行う。
Next, although the progress of clogging on the floor of the aerobic biological bed apparatus is extremely slow, the over resistance reaches a predetermined value (about 500 mmH 2 O) as it continues for 6 to 7 days. Wash in any suitable way.

即ち、本考案の請求項2のように、処理槽の1次処理水
流出部と好気性生物床装置との連通路に貯留タンクを
介在させて、1次処理水を一旦貯留タンクに貯留するよ
うにし、この貯留された1次処理水を好気性生物床装
置の床下部へ圧入する流路を付設する。従って、好気
性生物床装置の床を洗浄する時には、貯留タンク内
の1次処理水を床の下部に圧入して床を撹乱し洗浄
を行う。この時、床を好気性状態に保つための散気は
止めなくとも良い。また、洗浄排水は、曝気槽の前段の
最初沈殿池に導かれ、水中のSSが分離されるか、あるい
は曝気槽に導かれ処理槽に至って水中のSSが分離され
る。
That is, as in claim 2 of the present invention, the storage tank is interposed in the communication passage between the primary treated water outlet of the treatment tank and the aerobic biological bed apparatus to temporarily store the primary treated water in the storage tank. In this way, a flow path for pressurizing the stored primary treated water into the lower part of the floor of the aerobic biological bed apparatus is provided. Therefore, when cleaning the floor of the aerobic biological bed apparatus, the primary treated water in the storage tank is pressed into the lower part of the bed to disturb the floor for cleaning. At this time, it is not necessary to stop the aeration for keeping the floor aerobic. In addition, the cleaning wastewater is introduced to the first settling tank in the previous stage of the aeration tank to separate SS in water, or is introduced to the aeration tank and reaches the treatment tank to separate SS in water.

このように、本考案では好気性生物床装置の床の洗
浄に、従来装置のように、清澄な処理水を浪費する必要
が全くなく、処理水の生産効率が高い。
As described above, in the present invention, it is not necessary to waste clear treated water for washing the floor of the aerobic biological floor apparatus, unlike the conventional apparatus, and the production efficiency of the treated water is high.

〔実施例〕〔Example〕

本考案の実施例を第1図に基づいて説明すれば、原水
(下水その他の有機性汚水)を導く原水流入管1を備え
た曝気槽2内には、ブロワー3よりの空気を散気する散
気管4が配備されている。
An embodiment of the present invention will be described with reference to FIG. 1. Air from a blower 3 is diffused in an aeration tank 2 equipped with a raw water inflow pipe 1 for guiding raw water (sewage and other organic sewage). An air diffuser 4 is provided.

5は処理槽であって、槽内の上方部には、発泡スチロー
ル,発泡ポリプロピレン,木材チップ,,軽石,スポンジ
その他の比重が1.0未満の任意の水に浮く浮上材を充
填した浮上材層6が設けられ、その上部をネットなど
の通水性の支持部材7で覆い、浮上材層6の流出を防
いでいるが、浮上材の比重が1.0に近いものは、水面
上への露出率が小さいので、必ずしも支持部材7を必要
としない。また、浮上材層6の内部又は下部には、空
気などの酸素含有ガスを散気し、材表面に発達してい
る好気性生物膜に酸素を供給し、かつ浮上材層6の洗
浄時に散気量を増加させて洗浄効果を促進するために、
空気等の酸素含有ガスを散気する散気管8が配備されて
いる。
5 is a treatment tank, and in the upper part of the tank, there is a levitation material layer 6 filled with styrofoam, polypropylene foam, wood chips, pumice, sponge and any other levitation material that floats in water with a specific gravity of less than 1.0. It is provided, and its upper part is covered with a water-permeable supporting member 7 such as a net to prevent the levitation material layer 6 from flowing out. However, if the specific gravity of the levitation material is close to 1.0, the exposure rate on the water surface is small. The support member 7 is not always necessary. Further, an oxygen-containing gas such as air is diffused inside or under the levitation material layer 6 to supply oxygen to the aerobic biofilm developed on the surface of the levitation material layer 6, and at the time of cleaning the levitation material layer 6. In order to increase the volume and promote the cleaning effect,
An air diffuser 8 is provided for diffusing an oxygen-containing gas such as air.

処理層5の内部下方部は沈殿部9たらしめてあり、この
沈殿部9内に、曝気槽2から流出するスラリーを導くス
ラリー流入管10が開口されている。
A lower part of the inside of the treatment layer 5 is formed as a settling part 9, and a slurry inflow pipe 10 for guiding the slurry flowing out from the aeration tank 2 is opened in the settling part 9.

また、処理槽5の上部には、1次処理水流出部となる越
流ロンダー11が設けられて1次処理水流出管12が連結さ
れている。
Further, an overflow launder 11 serving as a primary treated water outflow portion is provided above the treatment tank 5, and a primary treated water outflow pipe 12 is connected thereto.

13は処理槽5の底部に連結された排泥管、14は沈殿部9
の沈殿汚泥15を曝気槽2に返送する汚泥返送管を示す。
13 is a sludge pipe connected to the bottom of the treatment tank 5, and 14 is a settling section 9.
The sludge return pipe for returning the settled sludge 15 of No. 1 to the aeration tank 2 is shown.

21は好気性生物床装置で、内部にはアンスラサイト,
砂,粒状活性炭などの比重1.0以上の粒状材を充填し
た床22が設けられ、その下部にはエアレーション用の
散気管23が配備されている。なお、好気性生物床装置
21は、公知のタイプを使用できるが、槽内全体を好気的
に維持するためには、本実施例のようなものが好まし
い。
21 is an aerobic biological floor device, anthracite inside,
A floor 22 filled with a granular material having a specific gravity of 1.0 or more, such as sand or granular activated carbon, is provided, and an aeration pipe 23 for aeration is provided below the floor 22. In addition, aerobic biological floor equipment
A known type can be used for 21, but in order to aerobically maintain the entire inside of the tank, the one as in this embodiment is preferable.

さらに、処理槽5上部の1次処理水流出管12は、好気性
生物床装置21内上部に連通開口され、床22内を下向
流で流過した1次処理水は、最終処理水となって床22
の下部に連結された最終処理水流出管24から流出するよ
うになっている。なお、1次処理水流出管12の好気性生
物床装置21内の開口部及び最終処理水流出管24の開口
位置は、図示例と上下を逆にし、1次処理水が床22を
上向流で流過したのち上部から流出するようにすること
もできる。
Further, the primary treated water outflow pipe 12 at the upper part of the treatment tank 5 is opened to communicate with the upper portion inside the aerobic biological bed apparatus 21, and the primary treated water that has passed through the floor 22 in a downward flow is the final treated water. Turned floor 22
The final treated water outflow pipe 24 is connected to the lower part of the pipe. The opening position of the primary treated water outflow pipe 12 in the aerobic biological bed apparatus 21 and the opening position of the final treated water outflow pipe 24 are turned upside down from the illustrated example, and the primary treated water is directed upward on the floor 22. It is also possible to let it flow through and then flow out from the upper part.

また、本考案では、1次処理水流出管12の途中に好気性
生物床装置21へ流入する1次処理水を一旦貯留する貯
留タンク31を介在させ、貯留タンク31と好気性生物床
装置21内の床22の下部とをポンプ32を備えた洗浄用水
管33で連通し、床22の洗浄に便利なようにするのが望
ましい。
Further, in the present invention, a storage tank 31 for temporarily storing the primary treated water flowing into the aerobic biological bed apparatus 21 is interposed in the middle of the primary treated water outflow pipe 12, and the storage tank 31 and the aerobic biological bed apparatus 21 are provided. It is desirable that the lower part of the floor 22 in the inside is communicated with a cleaning water pipe 33 equipped with a pump 32 to make it convenient for cleaning the floor 22.

さらに、処理槽5内の浮上材槽6の洗浄時には、その
洗浄排水を貯留タンク31に導くことができ、その場合に
は、貯留タンク31内の洗浄排水を最初沈殿池(図示せ
ず)又は曝気槽2へ導くために、ポンプ34を備えた配管
35を貯留タンク31に付設することが好ましい。
Furthermore, at the time of cleaning the floating material tank 6 in the processing tank 5, the cleaning wastewater can be guided to the storage tank 31, and in that case, the cleaning wastewater in the storage tank 31 is first transferred to a settling tank (not shown) or Piping equipped with a pump 34 for leading to the aeration tank 2.
It is preferable to attach 35 to the storage tank 31.

〔考案の効果〕[Effect of device]

本考案は、活性汚泥法の曝気槽のあとの沈殿槽の上部に
浮上ろ材層を設け、さらに該浮上ろ材層からの流出水
を、粒状ろ材の充填層から成る好気生物ろ床装置でさら
に処理するようになしたことにより、次の〜の効果
を得ることができる。
The present invention further provides an aerobic biological filter apparatus comprising a floating filter material layer provided above the sedimentation tank after the aeration tank of the activated sludge method, and the effluent water from the floating filter material layer further comprising a packed bed of granular filter material. By performing the processing, the following effects 1 to 3 can be obtained.

公共用水域への放流水の水質を、SS,BOD,NH4-Nのいず
れも1〜3mg/lと著しく良質にできるので、都市河川な
どの浄化水源として活用できる。
The quality of the discharged water to the public water area can be remarkably high at 1 to 3 mg / l for each of SS, BOD and NH 4 -N, so it can be used as a purified water source for urban rivers.

最終段に設けられた好気性生物床装置への供給水の
SSを、活性汚泥の沈降性が悪化した場合でも、安定して
低くできる。この結果、好気性生物床の目詰まり進行
が著しく少なくなり、維持管理が格段に容易になる。ま
た、好気性生物床部での硝化反応も進行しやすくな
る。
Supply water to the aerobic biological bed equipment installed at the final stage
SS can be stably lowered even when the settling property of activated sludge is deteriorated. As a result, the progress of clogging of the aerobic organism bed is significantly reduced, and maintenance is significantly facilitated. In addition, the nitrification reaction in the aerobic organism bed part also easily progresses.

浮上材層や好気性生物床の洗浄に、過水を用い
る必要が全くないので、過水の生産効率が高い。
Since it is not necessary to use superfluous water to wash the flotation material layer and aerobic biological bed, the production efficiency of superfluous water is high.

活性汚泥の沈降性状の悪化時でも、安定して高度な処
理水を得ることができる。
Even when the settling property of activated sludge is deteriorated, it is possible to stably obtain highly treated water.

活性汚泥の沈降性に特に気を使わなくてすむので、活
性汚泥処理の運転管理が非常に容易になる。
Since it is not necessary to pay particular attention to the sedimentation property of the activated sludge, the operational management of the activated sludge treatment becomes very easy.

好気性生物床の洗浄サイクルを、従来よりも著しく
少なくすることができるので、床内の生物相が安定化
され、過水15の水質が安定している。
The cleaning cycle of the aerobic biological bed can be significantly reduced as compared with the conventional one, so that the biota in the bed is stabilized and the quality of the perhydrogenate 15 is stable.

原水のBOD除去機能を、活性汚泥処理とそれに続く2
段階の生物膜処理とに3分割したので、原水BODの変動
に対して著しく安定であり、常に良好な放流水質(BOD,
SS,NH4-N数mg/l以下)を得ることができる。
BOD removal function of raw water, activated sludge treatment and subsequent 2
Since it is divided into 3 stages of biofilm treatment, it is remarkably stable against fluctuation of raw water BOD, and always has good discharge water quality (BOD,
SS, NH 4 -N several mg / l or less) can be obtained.

【図面の簡単な説明】[Brief description of drawings]

第1図は本考案の実施例を示す縦断面図である。 1……原水流入管、2……曝気槽、3……ブロワー、4,
8,23……散気管、5……処理槽、6……浮上材槽、7
……支持部材、9……沈殿部、10……スラリー流入管、
11……越流ロンダー、12……1次処理水流出管、13……
排泥管、14……汚泥返送管、15……沈殿汚泥、21……好
気性生物床装置、22……床、24……最終処理水流出
管、31……貯留タンク、32,34……ポンプ、33……洗浄
用水管、35……配管。
FIG. 1 is a vertical sectional view showing an embodiment of the present invention. 1 ... Raw water inflow pipe, 2 ... Aeration tank, 3 ... Blower, 4,
8,23 ... Air diffuser, 5 ... Treatment tank, 6 ... Floating material tank, 7
...... Supporting member, 9 ・ ・ ・ Settling section, 10 ・ ・ ・ Slurry inflow pipe,
11 …… Overflow ronder, 12 …… Primary treated water outflow pipe, 13 ……
Sludge pipe, 14 …… Sludge return pipe, 15 …… Settled sludge, 21 …… Aerobic biological bed equipment, 22 …… Bed, 24 …… Final treated water outflow pipe, 31 …… Storage tank, 32,34… … Pump, 33 …… Cleaning water pipe, 35 …… Piping.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】原水流入管(1)を有し、有機性汚水を生
物処理するための曝気槽(2)のあとに、上方部に浮上
ろ材からなる浮上ろ材層(6)を保持し下方部を沈殿部
(9)として、該沈殿部(9)に前記曝気層(2)から
のスラリ流入部(10)を設け、かつ、槽上部に1次処理
水流出部(11)を備えた処理槽(5)を配備し、該処理
槽(5)の1次処理水流出部(11)が1次処理水流出管
(12)で、粒状ろ材のろ床(22)を設けた好気性生物ろ
床装置(21)に連通されていることを特徴とする有機性
汚水の処理装置。
1. An aeration tank (2) for biologically treating organic sewage, which has a raw water inflow pipe (1), and then holds a floating filter material layer (6) made of a floating filter material in the upper part and holds it downward. The part is set as a settling part (9), the slurry inflow part (10) from the aeration layer (2) is provided in the settling part (9), and the primary treated water outflow part (11) is provided in the upper part of the tank. An aerobic system in which a treatment tank (5) is provided, the primary treated water outflow section (11) of the treated tank (5) is a primary treated water outflow pipe (12), and a filter bed (22) of granular filter media is provided. An apparatus for treating organic sewage, which is connected to a biological filter device (21).
【請求項2】前記処理槽(5)の1次処理水流出部(1
1)と前記好気性生物ろ床装置(21)とを連通した1次
処理水流出管(12)に貯留タンク(31)を介在せしめ、
該貯留タンク(31)の1次処理水を前記好気性生物ろ床
装置(21)内のろ床(22)下部へ圧入する洗浄用水管
(33)を付設した請求項1記載の有機性汚水の処理装
置。
2. The primary treated water outflow portion (1) of the treatment tank (5)
The storage tank (31) is interposed in the primary treated water outflow pipe (12) that communicates between 1) and the aerobic biological filter device (21).
The organic wastewater according to claim 1, further comprising a washing water pipe (33) for press-fitting the primary treated water of the storage tank (31) into the lower part of the filter bed (22) in the aerobic biological filter apparatus (21). Processing equipment.
JP1990001925U 1990-01-12 1990-01-12 Organic wastewater treatment equipment Expired - Lifetime JPH0717438Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990001925U JPH0717438Y2 (en) 1990-01-12 1990-01-12 Organic wastewater treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990001925U JPH0717438Y2 (en) 1990-01-12 1990-01-12 Organic wastewater treatment equipment

Publications (2)

Publication Number Publication Date
JPH0394998U JPH0394998U (en) 1991-09-27
JPH0717438Y2 true JPH0717438Y2 (en) 1995-04-26

Family

ID=31505811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990001925U Expired - Lifetime JPH0717438Y2 (en) 1990-01-12 1990-01-12 Organic wastewater treatment equipment

Country Status (1)

Country Link
JP (1) JPH0717438Y2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4581211B2 (en) * 2000-10-05 2010-11-17 栗田工業株式会社 Biological denitrification equipment
JP3782738B2 (en) * 2002-02-05 2006-06-07 住友重機械工業株式会社 Wastewater treatment method
JP6830037B2 (en) * 2017-05-31 2021-02-17 メタウォーター株式会社 Sewage treatment system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5648293A (en) * 1979-09-26 1981-05-01 Nissin Electric Co Ltd Treatment of organic waste water
JPH0210717B2 (en) * 1985-05-25 1990-03-09 Hitachi Plant Eng & Constr Co

Also Published As

Publication number Publication date
JPH0394998U (en) 1991-09-27

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