JPS5845912B2 - Water treatment method - Google Patents
Water treatment methodInfo
- Publication number
- JPS5845912B2 JPS5845912B2 JP54006359A JP635979A JPS5845912B2 JP S5845912 B2 JPS5845912 B2 JP S5845912B2 JP 54006359 A JP54006359 A JP 54006359A JP 635979 A JP635979 A JP 635979A JP S5845912 B2 JPS5845912 B2 JP S5845912B2
- Authority
- JP
- Japan
- Prior art keywords
- activated sludge
- treatment tank
- treated water
- treatment
- centrifugal separator
- 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
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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【発明の詳細な説明】
本発明は、都市下水や各種の産業廃水などを生物学的に
処理する方法に関し、小型の設備でもって能率良く水処
理を行なえるようにする事を目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for biologically treating urban sewage and various industrial wastewater, and an object of the present invention is to enable efficient water treatment using small-sized equipment.
次に、本発明の実施の態様を例示図に基いて詳述する。Next, embodiments of the present invention will be described in detail based on illustrative drawings.
深部で連通する内筒１と外筒２によって、例えば１００
ｍものレベル差を有する下降流路Ａと上昇流路Ｂを形成
し、前記上昇流路Ｂの上部にタンク３を連設すると共に
、揚水ポンプＰを備えた流路Ｃを前記タンク３から前記
下降流路Ａにわたって接続し、そして活性汚泥の返送管
４と処理水の供給管５を前記下降流路Ａに接続すると共
に、酸素含有ガスの供給装置６を下降流路Ａの上部側に
接続して、活性汚泥を含む処理水を両流路Ａ、Ｂにわた
って循環流動させると共に、前記下降流路Ａにおいて処
理水中に酸素ガスを溶解させて、活性汚泥による生物化
学的酸素要求量などの汚濁指標の改善を行なわせ、かつ
上昇流路Ｂにおいて溶解ガスを気泡化させて、活性汚泥
の凝集を効率良く行なわせる処理槽７を構成しである。For example, 100
A descending channel A and an ascending channel B having a level difference of m are formed, a tank 3 is connected to the upper part of the ascending channel B, and a channel C equipped with a pump P is connected from the tank 3 to the above. The activated sludge return pipe 4 and the treated water supply pipe 5 are connected to the downward flow path A, and the oxygen-containing gas supply device 6 is connected to the upper side of the downward flow path A. Then, the treated water containing activated sludge is circulated through both flow paths A and B, and oxygen gas is dissolved in the treated water in the downward flow path A to eliminate contamination such as biochemical oxygen demand due to activated sludge. The treatment tank 7 is configured to improve the index and bubble the dissolved gas in the ascending flow path B to efficiently coagulate activated sludge.
処理槽７からの処理水を、超音波照射装置８を備えた脱
泡処理槽９に直接的に取出して、溶存ガスの脱気並びに
小径気泡の大径化によって脱泡処理し、その処理水を直
接的に遠心分離装置１０に供給して、ろ過処理水を排出
路１１から後処理装置１２に取出する共に、遠心分離し
た濃縮活性汚泥の一部を、ポンプＰ１によって前記返送
管４を通して処理槽７に還元して、処理槽７における生
物処理を高濃度活性汚泥によって行なわせると共に、前
記濃縮活性汚泥の残部を自己消化や焼却などの処理装置
１３に取出すようにしである。The treated water from the treatment tank 7 is directly taken out to a degassing treatment tank 9 equipped with an ultrasonic irradiation device 8, where it is defoamed by degassing the dissolved gas and increasing the diameter of small bubbles. is directly supplied to the centrifugal separator 10, and the filtered water is taken out from the discharge path 11 to the after-treatment device 12, and a part of the centrifuged concentrated activated sludge is processed through the return pipe 4 by the pump P1. The concentrated activated sludge is returned to the tank 7 and biological treatment in the treatment tank 7 is carried out using the highly concentrated activated sludge, and the remainder of the concentrated activated sludge is taken out to a treatment device 13 for autolysis, incineration, etc.
即ち、例えば処理槽７からの処理水を直接的に遠心分離
装置１０に供給すると、その処理水中の気泡に起因して
高濃度活性汚泥の回収効率が低下し、あるいは処理水を
比重分離装置にかけて、その分離した活性汚泥を遠心分
離装置１０に供給する形態であれば、大型の比重分離装
置が必要になって全体の設備が大型化すると共に、処理
時間が長くなって能率が悪くなる欠点があるが、短時間
での処理ができ、かつ設備的に小型で済む脱泡処理槽９
を通して遠心分離する形態をとる事によって、気泡に起
因する活性汚泥回収効率低下の問題を解消しながら、高
濃度活性汚泥を能率良く取出す事ができ、高濃度の活性
汚泥による効率の良い水処理を、全体設備を小型化しな
がら能率良く行なわせられる。That is, for example, if treated water from the treatment tank 7 is directly supplied to the centrifugal separator 10, the recovery efficiency of high-concentration activated sludge will decrease due to air bubbles in the treated water, or the treated water will be fed directly to the centrifugal separator 10. If the separated activated sludge is supplied to the centrifugal separator 10, a large specific gravity separator will be required, resulting in an increase in the size of the entire equipment, as well as a disadvantage in that the processing time will become longer and efficiency will deteriorate. However, there is a defoaming treatment tank 9 that can perform treatment in a short time and requires small equipment.
By using centrifugal separation through the filter, high-concentration activated sludge can be efficiently taken out while solving the problem of reduced activated sludge recovery efficiency caused by air bubbles, allowing efficient water treatment with high-concentration activated sludge. , the entire equipment can be miniaturized and the process can be carried out efficiently.
尚、高濃度活性汚泥処理槽７、脱泡処理槽９、及び遠心
分離装置１０の構造は各種変形可能である。Note that the structures of the high-concentration activated sludge treatment tank 7, the defoaming treatment tank 9, and the centrifugal separator 10 can be modified in various ways.
以上要するに本発明により水処理方法は、高濃度活性汚
泥処理槽からの処理水を脱泡処理槽に直接供給し、その
脱泡処理槽９からの処理水を、遠心分離装置１０に直接
供給し、その遠心分離装置からの濃縮活性汚泥を前記処
理槽に供給する事を特徴とする。In summary, the water treatment method according to the present invention supplies the treated water from the high concentration activated sludge treatment tank directly to the defoaming treatment tank, and directly supplies the treated water from the defoaming treatment tank 9 to the centrifugal separator 10. , the concentrated activated sludge from the centrifugal separator is supplied to the treatment tank.
即ち、遠心分離によって得られた高濃度の活性汚泥によ
って生物処理するの−ぐ、処理槽を小型にしながら効率
良く水処理を行なう事ができ、そのように高濃度活性汚
泥を得るのに、例えば処理水を一旦比重分離して後に遠
心分離するに比べて小型の設備で済み、カロえて遠心分
離に先立って脱泡処理を施して気泡に起因する遠心分離
効率の低下を補うので、遠心分離装置を一層小型のもの
にでき、全体として、小型の設備でもって能率良く水処
理を行なえるようになった。In other words, biological treatment using highly concentrated activated sludge obtained by centrifugation allows for efficient water treatment while reducing the size of the treatment tank. Compared to separating the treated water once and then centrifuging it, it requires smaller equipment, and the centrifugal separator performs defoaming treatment before centrifugation to compensate for the decrease in centrifugal separation efficiency caused by air bubbles. can be made even smaller, and overall water treatment can now be carried out more efficiently with smaller equipment.
図面は本発明に係る水処理方法の実施の態様を例示する
水処理装置の概略全体縦断面図である。
７・・・高濃度活性汚泥処理槽、９・・・脱泡処理槽、
１０・・・遠心分離装置。The drawing is a schematic overall longitudinal sectional view of a water treatment device illustrating an embodiment of the water treatment method according to the present invention. 7...High concentration activated sludge treatment tank, 9...Defoaming treatment tank,
10... Centrifuge device.
Claims (1)
９に直接供給し、その脱泡処理槽９からの処理水を遠心
分離装置１０に直接供給し、その遠心分離装置１０から
の濃縮活性汚泥を前記処理槽７に供給する事を特徴とす
る水処理方法。1. The treated water from the high concentration activated sludge treatment tank 7 is directly supplied to the defoaming treatment tank 9, the treated water from the degassing treatment tank 9 is directly supplied to the centrifugal separator 10, and the treated water from the centrifugal separator 10 is A water treatment method characterized by supplying concentrated activated sludge to the treatment tank 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54006359A JPS5845912B2 (en) | 1979-01-22 | 1979-01-22 | Water treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54006359A JPS5845912B2 (en) | 1979-01-22 | 1979-01-22 | Water treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5597294A JPS5597294A (en) | 1980-07-24 |
| JPS5845912B2 true JPS5845912B2 (en) | 1983-10-13 |
Family
ID=11636161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54006359A Expired JPS5845912B2 (en) | 1979-01-22 | 1979-01-22 | Water treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5845912B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5753292A (en) * | 1980-09-18 | 1982-03-30 | Ebara Infilco Co Ltd | Purification of waste water with active sludge |
| JPS58298A (en) * | 1981-06-26 | 1983-01-05 | Ebara Infilco Co Ltd | Treatment of waste water |
| JPS583692A (en) * | 1981-06-29 | 1983-01-10 | Ebara Infilco Co Ltd | Method for treating waste water |
-
1979
- 1979-01-22 JP JP54006359A patent/JPS5845912B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5597294A (en) | 1980-07-24 |
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