JPS6221595B2 - - Google Patents
Info
- Publication number
- JPS6221595B2 JPS6221595B2 JP54025740A JP2574079A JPS6221595B2 JP S6221595 B2 JPS6221595 B2 JP S6221595B2 JP 54025740 A JP54025740 A JP 54025740A JP 2574079 A JP2574079 A JP 2574079A JP S6221595 B2 JPS6221595 B2 JP S6221595B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- pressure
- sludge
- sewage
- aeration tank
- 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
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
本発明は高圧の反応缶で汚泥を熱処理した際に
発生する高圧分解ガスを利用して高圧曝気槽内の
汚水を加圧し、この加圧した汚水を加圧浮上槽に
放出して汚水を処理する汚水処理装置に関する。Detailed Description of the Invention The present invention utilizes high-pressure decomposition gas generated when sludge is heat-treated in a high-pressure reactor to pressurize wastewater in a high-pressure aeration tank, and transfers this pressurized wastewater to a pressurized flotation tank. The present invention relates to a sewage treatment device that discharges sewage into a sewage treatment system.
従来、反応缶で高圧にして熱処理した汚泥から
生じる分離液は大気圧のエアレーシヨンタンクに
投入して汚水の処理を行なつていた。この方法で
は設備が大きくなり、又反応缶で発生する高圧の
分解ガスは充分利用されることなく処分してい
た。 Conventionally, the separated liquid produced from sludge that has been heat-treated under high pressure in a reaction vessel has been charged into an aeration tank at atmospheric pressure to treat sewage. This method requires large equipment, and the high-pressure cracked gas generated in the reactor is disposed of without being fully utilized.
本発明は汚泥を熱処理する高圧の反応缶から発
生する高圧分解ガスを高圧曝気槽に送つて、この
高圧分解ガスを利用して、高圧曝気槽内に供給さ
れた汚水を加圧し、この加圧された汚水を加圧浮
上槽に放出して汚水処理を行なうようにし、また
前記熱処理された汚泥の分離液もこの曝気槽に送
つて効率的に処理するものである。 The present invention sends high-pressure cracked gas generated from a high-pressure reaction tank for heat-treating sludge to a high-pressure aeration tank, uses this high-pressure cracked gas to pressurize wastewater supplied to the high-pressure aeration tank, and pressurizes the wastewater supplied into the high-pressure aeration tank. The sewage is discharged into a pressurized flotation tank for sewage treatment, and the separated liquid of the heat-treated sludge is also sent to this aeration tank for efficient treatment.
以下本発明の一実施例を図面に基づいて詳細に
説明する。図面において１は反応缶であり、汚泥
２はこの反応缶１に供給され水蒸気と高圧空気３
によつて熱処理される。熱処理された汚泥４は濃
縮槽５に送り、固形物を沈澱させた後貯留槽６に
送る。また沈澱した汚泥７は遠心分離装置８に送
つて更に汚泥を濃縮して、この濃縮汚泥９は系外
に排出すると共に、この時に分離した汚水１１は
貯留槽６に送る。そしてこの貯留槽６に集められ
た汚水１２はポンプ１３により、高圧曝気槽１４
に送る。一方反応缶１において汚泥２を熱処理す
るときに発生する高圧分解ガスは、排出管１５に
より排出すると共にこの排出管１５を高圧曝気槽
１４に連通させて、高圧曝気槽１４内の汚水を加
圧する。加圧浮上槽１６は高圧曝気槽１４の加圧
汚水１７を放出させ、加圧汚水中に溶け込んでい
た空気は放出の際減圧するので気泡化し、この気
泡が浮上するときに汚泥を浮上させて、汚泥を加
圧浮上槽１６より越流させ汚泥貯留槽１８に集め
る。一方汚泥が分離した清澄水１９は系外に排出
される。汚泥貯留槽１８内の汚泥は一部返送用汚
泥として高圧ポンプ２１により汚泥返送管２０を
経て高圧曝気槽１４に送り、残りは余剰汚泥２２
として濃縮槽５に送る。この様に、加圧浮上処理
を行なうことによつて、従来はB.O.D.負荷容量
で1.5〜2.0Kg／m2日であつたものが、この装置で
はB.O.D.負荷容量を10Kg／m2日程度まで高める
ことができる。また、図示の実施例では熱処理汚
泥分離液のみを高圧曝気槽１４に送り込んでいる
が、同時に他の系からの汚水を送り込むこともで
きる。 An embodiment of the present invention will be described in detail below based on the drawings. In the drawing, 1 is a reaction vessel, and sludge 2 is supplied to this reaction vessel 1, and water vapor and high-pressure air 3
Heat treated by The heat-treated sludge 4 is sent to a thickening tank 5, and after solid matter is precipitated, it is sent to a storage tank 6. Further, the precipitated sludge 7 is sent to a centrifugal separator 8 to further concentrate the sludge, and this concentrated sludge 9 is discharged outside the system, and the sewage 11 separated at this time is sent to the storage tank 6. The sewage 12 collected in this storage tank 6 is pumped into a high-pressure aeration tank 14 by a pump 13.
send to On the other hand, high-pressure cracked gas generated when heat-treating the sludge 2 in the reaction vessel 1 is discharged through a discharge pipe 15, and this discharge pipe 15 is communicated with the high-pressure aeration tank 14 to pressurize the wastewater in the high-pressure aeration tank 14. . The pressurized flotation tank 16 discharges the pressurized sewage 17 from the high-pressure aeration tank 14, and the air dissolved in the pressurized sewage is depressurized during discharge, so it becomes bubbles, and when these bubbles float, they float the sludge. , the sludge is overflowed from the pressurized flotation tank 16 and collected in the sludge storage tank 18. On the other hand, clear water 19 from which the sludge has been separated is discharged outside the system. A portion of the sludge in the sludge storage tank 18 is sent as return sludge to the high-pressure aeration tank 14 via the sludge return pipe 20 by the high-pressure pump 21, and the rest is used as surplus sludge 22.
It is sent to the concentration tank 5 as In this way, by performing pressurized flotation processing, the BOD load capacity of conventional equipment was 1.5 to 2.0 Kg/m for 2 days, but with this device, the BOD load capacity is increased to approximately 10 Kg/m for 2 days. be able to. Further, in the illustrated embodiment, only the heat-treated sludge separated liquid is sent to the high-pressure aeration tank 14, but sewage from other systems can also be sent at the same time.
以上説明したように本発明によれば、高圧曝気
槽における汚水の加圧を反応缶で発生する高圧分
解ガスにより行なうので充分高い圧力が得られる
ことと、反応缶により熱処理した汚泥を濃縮槽で
沈降汚泥と分離汚水とに分離して分離汚水のみを
高圧曝気槽に供給するので加圧浮上槽の負荷が軽
いこととから、加圧浮上槽で極めて効果的に浮上
汚泥と清澄水との分離を行なうことができる。ま
た反応缶からの高圧ガスを充分有効に利用でき、
しかも高圧曝気による汚水の加圧浮上処理によつ
て、負荷容量を高めることができるので、汚水処
理装置の設備面積を少なくすることができる。さ
らに加圧浮上槽と高圧曝気槽とを接続する汚泥返
送管により加圧浮上汚泥の一部を高圧曝気槽に供
給可能としたため、この汚泥を返送用汚泥として
利用することができる。 As explained above, according to the present invention, the sewage in the high-pressure aeration tank is pressurized by the high-pressure cracked gas generated in the reaction tank, so a sufficiently high pressure can be obtained, and the sludge heat-treated in the reaction tank is transferred to the thickening tank. Since the settled sludge and separated sewage are separated and only the separated sewage is supplied to the high-pressure aeration tank, the load on the pressurized flotation tank is light, so the floated sludge and clear water can be separated extremely effectively in the pressurized flotation tank. can be done. In addition, the high pressure gas from the reactor can be used effectively.
Moreover, the load capacity can be increased by pressurized flotation treatment of sewage water using high-pressure aeration, so the equipment area of the sewage treatment apparatus can be reduced. Furthermore, a portion of the pressurized floatation sludge can be supplied to the high-pressure aeration tank through the sludge return pipe connecting the pressurized flotation tank and the high-pressure aeration tank, so this sludge can be used as return sludge.
図面は本発明装置の一実施例を示すフローシー
トである。
１……反応缶、５……濃縮槽、６……汚水貯留
槽、８……遠心分離装置、１４……高圧曝気槽、
１５……高圧分解ガスの排出管、１６……加圧浮
上槽。
The drawing is a flow sheet showing an embodiment of the apparatus of the present invention. 1...Reaction can, 5...Concentration tank, 6...Sewage storage tank, 8...Centrifugal separator, 14...High pressure aeration tank,
15... High-pressure cracked gas discharge pipe, 16... Pressurized flotation tank.
Claims (1)
を熱処理する反応缶と、この反応缶で熱処理され
た汚泥を沈澱汚泥と分離汚水とに分離させる濃縮
槽と、この濃縮槽からの分離汚水を含む汚水を加
圧曝気する高圧曝気槽と、この高圧曝気槽からの
加圧汚水を加圧浮上処理して清燈水と浮上汚泥と
を排出する加圧浮上槽と前記反応缶と高圧曝気槽
とを接続して、反応缶で発生する高圧分解ガスを
高圧曝気槽に供給可能な排出管と、前記加圧浮上
槽と高圧曝気槽とを接続して、加圧浮上槽から排
出された浮上汚泥の一部を高圧曝気槽に供給可能
な汚泥返送管とを有することを特徴とする汚水処
理装置。1 A reaction tank to which water vapor, high pressure air, and sludge are supplied to heat-treat the sludge, a thickening tank to separate the sludge heat-treated in the reaction tank into settled sludge and separated sewage, and a thickening tank to separate the separated sewage from the thickening tank. a high-pressure aeration tank that pressurizes and aerates the sewage contained in the tank; a pressurized flotation tank that performs pressure flotation treatment on the pressurized sewage from the high-pressure aeration tank to discharge clean water and floated sludge; the reaction can; and the high-pressure aeration tank. A discharge pipe is connected to the pressurized flotation tank and the high-pressure aeration tank to supply the high-pressure decomposed gas generated in the reaction tank to the high-pressure aeration tank, and the high-pressure decomposed gas generated in the reaction vessel is connected to the high-pressure aeration tank. A sewage treatment device characterized by having a sludge return pipe capable of supplying a portion of sludge to a high-pressure aeration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2574079A JPS55119486A (en) | 1979-03-05 | 1979-03-05 | Treating apparatus for contaminated water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2574079A JPS55119486A (en) | 1979-03-05 | 1979-03-05 | Treating apparatus for contaminated water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55119486A JPS55119486A (en) | 1980-09-13 |
| JPS6221595B2 true JPS6221595B2 (en) | 1987-05-13 |
Family
ID=12174212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2574079A Granted JPS55119486A (en) | 1979-03-05 | 1979-03-05 | Treating apparatus for contaminated water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55119486A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63140699U (en) * | 1987-03-05 | 1988-09-16 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5759491A (en) * | 1995-07-21 | 1998-06-02 | Bunin; Kiva | Process and apparatus for the decontamination of infectious waste |
| JP4726816B2 (en) * | 2007-01-29 | 2011-07-20 | 大阪瓦斯株式会社 | Wastewater treatment system |
| JP6284156B2 (en) * | 2014-11-07 | 2018-02-28 | 株式会社ピーシーエス | Pollutant separation and volume reduction system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4884463A (en) * | 1972-02-14 | 1973-11-09 | ||
| JPS4997459A (en) * | 1973-01-24 | 1974-09-14 | ||
| JPS5098157A (en) * | 1973-12-29 | 1975-08-04 |
-
1979
- 1979-03-05 JP JP2574079A patent/JPS55119486A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63140699U (en) * | 1987-03-05 | 1988-09-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55119486A (en) | 1980-09-13 |
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