JPH0757351B2 - Sewage treatment equipment - Google Patents
Sewage treatment equipmentInfo
- Publication number
- JPH0757351B2 JPH0757351B2 JP6168987A JP6168987A JPH0757351B2 JP H0757351 B2 JPH0757351 B2 JP H0757351B2 JP 6168987 A JP6168987 A JP 6168987A JP 6168987 A JP6168987 A JP 6168987A JP H0757351 B2 JPH0757351 B2 JP H0757351B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- anaerobic
- filter bed
- tank
- treatment
- 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 - Fee Related
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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、汚水中の有機物を嫌気性ろ床法により処理す
る嫌気性ろ床式処理槽と好気性処理槽と沈殿槽からなる
汚水の処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to wastewater consisting of an anaerobic filter type treatment tank for treating organic matter in wastewater by an anaerobic filter method, an aerobic treatment tank and a sedimentation tank. Regarding a processing device.
（従来の技術） 従来、有機性汚水を処理するには、最初沈殿池でSSを除
去した後、嫌気性ろ床において嫌気処理し、次に、接触
曝気等の好気性処理で仕上げ処理し、最終沈殿池で汚泥
と処理水とを分離する方法が行われていた。(Prior Art) Conventionally, in order to treat organic wastewater, SS is first removed in a sedimentation tank, then anaerobic treatment is performed in an anaerobic filter bed, and then finishing treatment is performed by aerobic treatment such as contact aeration. A method of separating sludge from treated water was used in the final settling tank.
（発明が解決しようとする問題点） しかし、この方法では、嫌気性処理の反応に長時間を要
するので、嫌気性処理槽の容積が大きくなるという問題
点がある。また、この方法では、最初沈殿池と最終沈殿
池より汚泥が発生し、この発生汚泥を容易に処理するに
は、発生汚泥量を低減する必要があった。(Problems to be Solved by the Invention) However, this method has a problem that the volume of the anaerobic treatment tank increases because the reaction of the anaerobic treatment requires a long time. Further, in this method, sludge is generated from the first settling basin and the final settling basin, and it was necessary to reduce the amount of generated sludge in order to easily treat this sludge.
従って、本発明は、汚泥発生量が少なく、汚水を効率良
く処理することができるコンパクトな処理装置を提供す
ることを目的とする。Therefore, it is an object of the present invention to provide a compact treatment device that produces a small amount of sludge and can treat sewage efficiently.
（問題点を解決するための手段） 本発明は、流入汚水中の浮遊物質には嫌気性微生物が含
まれることに着目し、下部に原水供給口、内部に嫌気性
ろ床、上部に処理水流出口を有する汚水の嫌気性ろ床式
処理槽に、流入汚水中の嫌気性微生物を積極的に利用す
ると同時に沈殿槽の汚泥を嫌気性消化する手段を設ける
ことによって前記の問題点を解決したものである。(Means for Solving Problems) The present invention focuses on the fact that suspended solids in inflowing wastewater contain anaerobic microorganisms, and has a raw water supply port at the bottom, an anaerobic filter inside, and a treated water flow at the top. The above problem is solved by providing a means for anaerobic filter bed treatment tank of sewage having an outlet, which positively utilizes anaerobic microorganisms in the inflowing sewage and at the same time anaerobically digests sludge in the sedimentation tank. Is.
即ち、本発明による押汚水の処理装置は、嫌気性ろ床式
処理槽、好気性処理槽及び沈殿槽から成る汚水の処理装
置において、嫌気性ろ床式処理槽が下部に原水供給口、
内部に嫌気性ろ床、上部に処理水流出口を有し、前記嫌
気性ろ床の下部に汚泥ブランケット部を設け、沈殿槽か
ら汚泥ブランケット部の下部に汚泥を返送する配管を設
けたことを特徴とする。That is, the apparatus for treating sewage according to the present invention is a sewage treatment apparatus comprising an anaerobic filter bed type treatment tank, an aerobic treatment tank and a sedimentation tank, wherein the anaerobic filter bed type treatment tank is a raw water supply port at the bottom,
It has an anaerobic filter bed inside, a treated water outlet in the upper part, a sludge blanket part is provided in the lower part of the anaerobic filter bed, and a pipe for returning sludge from the settling tank to the lower part of the sludge blanket part is provided. And
本発明による汚水の処理装置において、嫌気性ろ床式処
理槽内の汚泥ブランケット部には、嫌気性微生物から成
る汚泥を一定量保持しておき、ここで流入汚水中の嫌気
性微生物を含む浮遊物質を保留すると共に、汚水中の有
機物は予備的に嫌気性処理され、更に、嫌気性ろ床によ
り処理される。In the sewage treatment apparatus according to the present invention, a certain amount of sludge composed of anaerobic microorganisms is held in the sludge blanket part in the anaerobic filter bed treatment tank, where the inflowing sewage contains floating anaerobic microorganisms. The organic matter in the wastewater is preliminarily anaerobically treated while the substances are retained, and further treated by an anaerobic filter bed.
ろ床材としては、プラスチック、セラミック等の材料か
ら成る常用の成形体を使用することができる。As the filter material, a commonly used molded body made of a material such as plastic or ceramic can be used.
上記の嫌気性ろ床式処理槽で処理された処理水は、場合
によりろ過された後、更に好気性処理槽で好気性処理し
た後、沈殿槽で固液分離される。The treated water treated in the above anaerobic filter bed treatment tank is optionally filtered, aerobically treated in the aerobic treatment tank, and then solid-liquid separated in the precipitation tank.
濾過を行う場合、嫌気性ろ床式処理槽の嫌気性ろ床の上
部にあるろ過部を設けるのが好ましい。これにより嫌気
性ろ床から一部剥離した微生物の塊が除去される。ろ過
部は、浮遊ろ材とその流出防止網から構成されているも
のが好ましい。When carrying out filtration, it is preferable to provide a filtration section above the anaerobic filter bed of the anaerobic filter bed treatment tank. As a result, the lumps of microorganisms partially peeled from the anaerobic filter bed are removed. It is preferable that the filter section is composed of a floating filter medium and its outflow prevention mesh.
一方、沈殿槽で分離された汚泥は、汚泥ブランケット部
の下部に返送され、嫌気性消化される。On the other hand, the sludge separated in the settling tank is returned to the lower part of the sludge blanket section and is anaerobically digested.
（作用） 嫌気性ろ床の下部に設けた汚泥ブランケット部は、流入
汚水中の嫌気性微生物を含む浮遊物質を保留し、最初沈
殿池の役割をすると共に、汚水中の有機物を予備的に嫌
気性処理し、嫌気性ろ床における処理時間を短縮する作
用をし、また、沈殿槽から返送された汚泥を嫌気性消化
することによって発生汚泥量を低減させる。(Function) The sludge blanket part provided in the lower part of the anaerobic filter bed holds suspended solids containing anaerobic microorganisms in the inflowing wastewater, functions as a settling tank first, and preliminarily anaerobes the organic matter in the wastewater. Sewage treatment to shorten the treatment time in the anaerobic filter bed, and reduce the amount of sludge generated by anaerobic digestion of the sludge returned from the settling tank.
（実施例） 次に、図面に示した実施例に基づいて本発明を詳述する
が、本発明はこれに限定されるものではない。(Examples) Next, the present invention will be described in detail based on the examples shown in the drawings, but the present invention is not limited thereto.
第１図は、本発明の一実施態様を示す汚水の処理装置の
系統図である。第１図に示した汚水の処理装置は、主と
して、嫌気性ろ床式処理槽１、好気性処理槽３及び沈殿
槽４から成る。嫌気性ろ床式処理槽１は、内部に嫌気性
ろ床２及びその下部に汚泥ブランケット部５を有する。FIG. 1 is a system diagram of a wastewater treatment apparatus showing one embodiment of the present invention. The sewage treatment apparatus shown in FIG. 1 mainly comprises an anaerobic filter type treatment tank 1, an aerobic treatment tank 3 and a sedimentation tank 4. The anaerobic filter bed processing tank 1 has an anaerobic filter bed 2 inside and a sludge blanket part 5 below the anaerobic filter bed 2.
汚水は、原水供給管７を通って嫌気性微生物から成る汚
泥を一定量保持した汚泥ブランケット部５の下部から導
入される。汚泥ブランケット部５を上昇する間に汚水中
の嫌気性微生物を含む浮遊物質は、汚泥ブランケット部
５で保留されると共に、汚水中の有機物は予備的に嫌気
性処理される。このとき、沈殿槽４からの汚泥を汚泥返
送配管８により汚泥ブランケット部５の下部に返送し、
沈殿槽４からの汚泥を嫌気的に消化して汚泥量の減少を
図る。また、汚泥ブランケット部の汚泥は、間欠的に余
剰分を引抜くことによって一定量に保持する。The sewage is introduced from the lower part of the sludge blanket part 5 which holds a certain amount of sludge composed of anaerobic microorganisms through the raw water supply pipe 7. While rising in the sludge blanket unit 5, suspended solids containing anaerobic microorganisms in the wastewater are retained in the sludge blanket unit 5, and organic substances in the wastewater are preliminarily anaerobic treated. At this time, the sludge from the settling tank 4 is returned to the lower part of the sludge blanket section 5 by the sludge return pipe 8.
The amount of sludge is reduced by anaerobically digesting the sludge from the settling tank 4. In addition, the excess amount of sludge in the sludge blanket part is intermittently withdrawn to maintain a fixed amount.
汚泥ブランケット部５を通過した汚水は、嫌気性ろ床２
を上昇して、更に嫌気性処理され、汚水中の有機物が分
解される。汚水中の有機物は、汚泥ブランケット部で予
備的に嫌気性処理されているので、嫌気性ろ床２による
嫌気性処理に要する時間は、従来に比べて著しく短縮さ
れる。The sewage that has passed through the sludge blanket section 5 is anaerobic filter bed 2
, Anaerobic treatment is further performed, and organic substances in wastewater are decomposed. Since the organic matter in the sewage is preliminarily anaerobically treated in the sludge blanket part, the time required for the anaerobic treatment by the anaerobic filter bed 2 is significantly shortened as compared with the conventional case.
嫌気性処理される汚水は、嫌気性ろ床式処理槽１をその
上部から流出し、次いで、好気性処理槽３に流入し、こ
こで空気導管６によって曝気処理される。第１図には、
好気性処理槽３として好気性ろ床式のものを示したが、
ろ床式に限定されるものではなく、任意の好気性処理方
式を適用することができる。The sewage to be anaerobically treated flows out of the anaerobic filter type treatment tank 1 from the upper part thereof, and then flows into the aerobic treatment tank 3 where it is aerated by an air conduit 6. In Figure 1,
As the aerobic treatment tank 3, an aerobic filter bed type is shown.
The method is not limited to the filter bed method, and any aerobic treatment method can be applied.
好気性処理槽３内で好気的に仕上げ処理された汚水は、
ろ床から一部剥離した浮遊汚泥を含むので、沈殿槽４で
沈降処理され、処理水は流出管９より系外へ流出し、沈
降した汚泥は前記のように汚泥返送配管８により嫌気性
ろ床式処理槽１へ返送される。実施例１ 第１図に示した処理装置及び従来の嫌気性処理槽（汚泥
ブランケット部を有しない）の前に更に最初沈殿池を有
し、最終沈殿池から嫌気性処理槽への汚泥の返送を行わ
ない処理装置（従来法として示す）を用いて、第１表に
示す処理時間で第２表に示した水質の原水を処理し、第
２表に示した水質の処理水を得た。Wastewater that has been aerobically finished in the aerobic treatment tank 3
Since it contains floating sludge partially peeled from the filter bed, it is settled in the settling tank 4, the treated water flows out of the system through the outflow pipe 9, and the settled sludge is anaerobic filtered by the sludge return pipe 8 as described above. It is returned to the floor type processing tank 1. Example 1 A sludge was returned from the final sedimentation tank to the anaerobic treatment tank by further having a first sedimentation tank in front of the treatment apparatus shown in FIG. 1 and a conventional anaerobic treatment tank (without a sludge blanket part). The raw water of the water quality shown in Table 2 was treated for a treatment time shown in Table 1 by using a treatment device (not shown) (shown as a conventional method) to obtain treated water having the water quality shown in Table 2.
第１表及び第２表から明らかなとおり、本発明によれ
ば、従来法に比べて処理時間が著しく短縮され、装置を
小型化でき、更に、汚泥発生量も著しく少ない。 As is clear from Table 1 and Table 2, according to the present invention, the treatment time is remarkably shortened as compared with the conventional method, the apparatus can be downsized, and the sludge generation amount is remarkably small.
（発明の効果） 本発明によれば、流入汚水中の嫌気性微生物を利用し、
汚泥ブランケット部で予備的嫌気性処理が行われるの
で、嫌気性ろ床での処理時間を著しく短縮することがで
きる。処理時間の短縮は、嫌気性ろ床による処理の時間
ばかりでなく、汚泥ブランケット部での処理時間を含め
た合計処理時間においても顕著である。従って、嫌気性
処理槽の容積を著しく低減することができ、また、最初
沈殿池を省略できるので、装置を著しく小型化すること
ができる。(Effect of the invention) According to the present invention, utilizing anaerobic microorganisms in the inflowing wastewater,
Since the preliminary anaerobic treatment is performed in the sludge blanket part, the treatment time in the anaerobic filter bed can be significantly shortened. The reduction of treatment time is remarkable not only in the treatment time by the anaerobic filter bed but also in the total treatment time including the treatment time in the sludge blanket part. Therefore, the volume of the anaerobic treatment tank can be remarkably reduced, and the sedimentation tank can be omitted at first, so that the apparatus can be remarkably downsized.
更に、本発明によれば、汚泥発生量を著しく減少するこ
とができる。Furthermore, according to the present invention, the amount of sludge generated can be significantly reduced.
第１図は、本発明の汚水の処理装置の一実施例を示す系
統図である。 符号の説明 １……嫌気性ろ床式処理装置、２……嫌気性ろ床、３…
…好気性処理槽、４……沈殿槽、５……汚泥ブランケッ
ト部、８……汚泥返送配管FIG. 1 is a system diagram showing an embodiment of the wastewater treatment apparatus of the present invention. Explanation of symbols 1 ... Anaerobic filter bed processing device, 2 ... Anaerobic filter bed, 3 ...
… Aerobic treatment tank, 4 …… settling tank, 5 …… sludge blanket part, 8 …… sludge return piping
Claims (2)
殿槽から成る汚水の処理装置において、嫌気性ろ床式処
理槽が下部に原水供給口、内部に嫌気性ろ床、上部に処
理水流出口を有し、前記嫌気性ろ床の下部に汚泥ブラン
ケット部を設け、沈殿槽から汚泥ブランケット部の下部
に汚泥を返送する配管を設けたことを特徴とする汚水の
処理装置。1. A sewage treatment apparatus comprising an anaerobic filter bed treatment tank, an aerobic treatment tank and a sedimentation tank, wherein the anaerobic filter bed treatment tank has a raw water supply port at the bottom, an anaerobic filter bed at the inside, and an upper part. And a pipe for returning sludge from the settling tank to the lower part of the sludge blanket part, the sludge blanket part being provided in the lower part of the anaerobic filter bed.
求の範囲第１項記載の汚水の処理装置。2. The sewage treatment apparatus according to claim 1, further comprising a filtration section above the anaerobic filter bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6168987A JPH0757351B2 (en) | 1987-03-16 | 1987-03-16 | Sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6168987A JPH0757351B2 (en) | 1987-03-16 | 1987-03-16 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63229197A JPS63229197A (en) | 1988-09-26 |
| JPH0757351B2 true JPH0757351B2 (en) | 1995-06-21 |
Family
ID=13178476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6168987A Expired - Fee Related JPH0757351B2 (en) | 1987-03-16 | 1987-03-16 | Sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0757351B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0779998B2 (en) * | 1990-02-09 | 1995-08-30 | 株式会社荏原製作所 | Sewage treatment method |
| US7727395B2 (en) * | 2008-07-23 | 2010-06-01 | PurposeEnergy, Inc. | Method and apparatus for processing organic waste |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62160191A (en) * | 1986-01-07 | 1987-07-16 | Ebara Res Co Ltd | Anaerobic bioreactor |
-
1987
- 1987-03-16 JP JP6168987A patent/JPH0757351B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63229197A (en) | 1988-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |