CN1199386A - 高污泥浓度下的废水生物处理法 - Google Patents
高污泥浓度下的废水生物处理法 Download PDFInfo
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- CN1199386A CN1199386A CN96197579A CN96197579A CN1199386A CN 1199386 A CN1199386 A CN 1199386A CN 96197579 A CN96197579 A CN 96197579A CN 96197579 A CN96197579 A CN 96197579A CN 1199386 A CN1199386 A CN 1199386A
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- flotation
- sludge
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- 239000010802 sludge Substances 0.000 title claims abstract description 41
- 239000010865 sewage Substances 0.000 title abstract 4
- 238000010170 biological method Methods 0.000 title 1
- 238000005188 flotation Methods 0.000 claims abstract description 29
- 230000004913 activation Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000002351 wastewater Substances 0.000 claims description 25
- 239000000725 suspension Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000003213 activating effect Effects 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1431—Dissolved air flotation machines
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Physical Water Treatments (AREA)
- Activated Sludge Processes (AREA)
- Treatment Of Sludge (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
本发明涉及一种生物废水处理法,其中,在活化阶段(2)首先让气体通过污泥和废水的混合物,再通过浮选(5)把活性污泥从经处理的污泥中分离。本方法的特征在于,活化阶段中污泥的浓度≥6克/升,以及通过释压来实现浮选。
Description
本发明涉及一种废水的生物处理方法，其中将活性污泥和废水的混合物在活化阶段中用气体处理并将活性污泥从经处理的废水浮选分离掉。
该类型方法已被例如德国专利申请P4411991.7所公开，其并入本文作为参考。在该类型的方法中，污泥与水力负荷，该经处理或纯化的废水一起离开活化阶段，并在分离阶段中经浮选而从水力负荷分离出且将其一部分循环回活化阶段以在活化阶段中保持确定的污泥浓度。由于这种操作方法，在活化阶段中的污泥浓度与来自分离阶段的流出物流中的污泥浓度之间有一依赖性，所述流出物流被循环回活化阶段，即所谓的回流污泥。活化阶段中的污泥浓度因而由循环污泥与本质上无固体的废水的混合物所决定。以这种方式调定的活化阶段中的污泥浓度通常为5克/升(参看上述专利申请)。该污泥浓度在废水生物处理工厂的尺寸设计中是一项重要的参数，因为它特别是能够决定活化反应器的容积，该容积随污泥浓度的提高而减小。所以可在相当高污泥浓度下操作的废水处理工厂如果没有某些严重缺点的话将是所需要的。这类工厂的缺点在于，浮选部分(依污泥浓度而定)必须做得非常大，因而相应变得非常昂贵。此外，操作这类浮选工厂会因其对废水流速的变化有很敏感的反应而有困难。另外，因为浮选所需的高水流速与污泥浓度有直接(正比)函数关系，所以操作成本非常高。
现出人意料地发现，如果前述类型的方法修改成活化阶段中的活性污泥浓度为≥6克/升且该浮选是释压浮选，这些缺点就显著减轻。
因此，本发明涉及一种废水生物处理方法，其中将活性污泥和废水的混合物在活化阶段中用气体处理并将活性污泥从经处理的废水中浮选分离掉，其中该活化阶段中的活性污泥浓度为≥6克/升且其中该浮选为释压浮选。本发明方法的优选实施方案由权利要求2至3项给出。
本发明方法的第一个优选实施方案为在活化阶段中的活性污泥浓度为≥8克/升，优选≥10克/升，特别优选≥12克/升。另一优选实施方案为，要送去浮选的悬浮液以≥0.3米/秒的流速、按气泡上升自然方向的相反方向引入，这种情况下另外通过气体处理装置用气体处理该悬浮液，经气体处理过的悬浮液在该气体处理装置的底部放出并送去浮选，如P44 11991.7中所述。
各实施方案中所提的各个特征中的一个或多个也可各自构成本发明的解决方案，各个特征也可根据需要组合起来。
本发明方法的优点基本上在于，废水生物处理工厂的活化阶段和浮选阶段都可做得比传统废水处理工厂更小。这同时改善了效率并简化了操作。
本发明方法的一个可能实施方案要在下文参考附图所示工艺流程图予以更详细的说明。
废水1与称为回流污泥7的活性污泥在活化阶段的活化室2内混合并通气3。在此过程中，废水中所含污染物被生物降解。然后将污泥和水的混合物通到一个垂直直立下流式反应器4。在这个作为气体处理装置的下流式反应器4中，将活性污泥和水的混合物向下通入并在该过程中予以通气。必要时，可加入絮凝剂12。然后从该下流式反应器4的底部放出该活性污泥和水的混合物并送往浮选室5，浮选室5中将活性污泥从水中分离出来。此种分离可以利用在高压水站6中把水和空气10变成高压后释放在浮选池5中的作法予以加强。用于此作法的水为经纯化的废水11。把塔13作为储罐或缓冲罐。将分离出的活性污泥中的一部分作为回流污泥7循环回活化室2。其余部分则以过量污泥8的形式清除掉。经纯化过的废水经由出口以澄清水的形式放出。
本发明方法根据两个操作例进一步解释。
这些实施例涉及废水生物处理厂，其中，通过具有如上所述的上游下流式塔的释压浮选而分离出活性污泥。在生物处理的上游处，对废水进行初步澄清。当活性污泥浓度增加时，各情况中对这些特定废水所形成的生物量在降解动力学方面没有显示出任何明显的变化。针对降解废水中所含各成分的各代谢过程而考虑对固体含量浓度的增加予以限制。
在各实施例中，改变活化室的体积和活性污泥浓度。实施例1：废水特性和工艺特性的数据如下：废水流速 30立方米/小时BOD5浓度： 2公斤BOD5/立方米(生物需氧量)COD浓度： 3.4公斤COD/立方米(化学需氧量)pH： 6.8回流污泥浓度： 40克/升流出物中的BOD5浓度： ＜45毫克/升流出物中的固体含量： ＜50毫克/升各实施例活化体积(立方米) 活化室中的活性污泥浓度(克/升)
611 6
488 8
412 10实施例2废水特性和工艺特性的数据：废水流速 120立方米/小时BOD5浓度： 2.2公斤BOD5/立方米COD浓度： 3.3公斤COD/立方米pH： 7.1回流污泥浓度： 50克/升流出物中的BOD5浓度： ＜45毫克/升流出物中的固体含量： ＜50毫克/升各实施例活化体积(立方米) 活化室中的活性污泥浓度(克/升)
1516 12
1366 14
1271 16
权利要求书
按照条约第19条的修改
1.一种废水生物处理方法，其中，在活化阶段中用气体处理活性污泥和废水的混合物并将活性污泥从经处理的废水中浮选分离，其中，活化阶段中活性污泥浓度≥6克/升，其中，所述浮选是释压浮选，其中，要送去浮选的悬浮液以≤0.3米/秒的流速、按气泡上升自然方向的相反方向引入，在该过程中另外通过气体处理装置用气体处理该悬浮液，经气体处理过的悬浮液在该气体处理装置的底部放出并送去浮选。
2.如权利要求1的方法，其中活化阶段中活性污泥的浓度≥8克/升，优选≥10克/升，特别优选≥12克/升。
Claims (3)
1.一种废水生物纯化方法，其中将活性污泥和废水的混合物在活化阶段中用气体处理并将活性污泥从经处理的废水中浮选分离掉，其中该活化阶段中的活性污泥浓度为≥6克/升且其中该浮选为释压浮选。
2.如权利要求1的方法，其中在活化阶段中的活性污泥浓度为≥8克/升，优选≥10克/升，特别优选≥12克/升。
3.如权利要求1或2的方法，其中要送去浮选的悬浮液以≤0.3米/秒的流速、按气泡上升自然方向的相反方向引入，在该过程中另外通过气体处理装置用气体处理该悬浮液，经气体处理过的悬浮液在该气体处理装置的底部放出并送去浮选。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19537698A DE19537698A1 (de) | 1995-10-11 | 1995-10-11 | Biologische Abwasserreinigung bei hohen Schlammkonzentrationen |
| DE19537698.6 | 1995-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1199386A true CN1199386A (zh) | 1998-11-18 |
Family
ID=7774480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96197579A Pending CN1199386A (zh) | 1995-10-11 | 1996-10-04 | 高污泥浓度下的废水生物处理法 |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US6048460A (zh) |
| EP (1) | EP0854844B1 (zh) |
| JP (1) | JPH11513306A (zh) |
| KR (1) | KR19990064150A (zh) |
| CN (1) | CN1199386A (zh) |
| AT (1) | ATE194134T1 (zh) |
| AU (1) | AU709254B2 (zh) |
| BR (1) | BR9611038A (zh) |
| CA (1) | CA2234559A1 (zh) |
| DE (2) | DE19537698A1 (zh) |
| ES (1) | ES2150142T3 (zh) |
| HU (1) | HUP9903415A2 (zh) |
| ID (1) | ID16328A (zh) |
| PT (1) | PT854844E (zh) |
| WO (1) | WO1997013726A1 (zh) |
| ZA (1) | ZA968549B (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102762505A (zh) * | 2010-08-12 | 2012-10-31 | 株式会社泰科企划 | 污泥浓缩方法和污泥浓缩系统 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010052191A1 (de) * | 2010-11-24 | 2012-05-24 | Envirochemie Gmbh | Druckentspannungsflotation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3980556A (en) * | 1974-01-25 | 1976-09-14 | Ontario Research Foundation | Adsorption biooxidation treatment of waste waters to remove contaminants therefrom |
| US4085041A (en) * | 1974-12-20 | 1978-04-18 | Fmc Corporation | Biological oxidation and flotation apparatus and method |
| JPS603873B2 (ja) * | 1978-03-31 | 1985-01-31 | 東レ株式会社 | 水処理方法 |
| JPS6324000Y2 (zh) * | 1979-08-29 | 1988-07-01 | ||
| JPS57136994A (en) * | 1981-02-17 | 1982-08-24 | Mitsui Miike Mach Co Ltd | Aeration tank for activated sludge treatment |
| DE3340096A1 (de) * | 1983-11-05 | 1985-05-23 | Timm Dipl.-Ing. 8000 München Lessel | Verfahren zum versetzen einer fluessigkeit mit von ihr absorbierbaren gasen und vorrichtung hierfuer |
| JPH07100158B2 (ja) * | 1987-06-11 | 1995-11-01 | 晧胤 北島 | 活性汚泥法における高濃度処理方法 |
| AU8709491A (en) * | 1991-07-10 | 1993-01-14 | Envirex Inc. | Apparatus for dissolution of gas in liquid |
| DE4331927C2 (de) * | 1992-09-17 | 1995-07-13 | Mannesmann Ag | Verfahren zur biochemischen Entfernung von Stickstoff und Phosphor aus Abwasser |
| DE4411991A1 (de) * | 1994-04-11 | 1995-10-12 | Hoechst Ag | Verfahren und Vorrichtung zum Abtrennen von suspensierten Stoffen aus Flüssigkeiten |
-
1995
- 1995-10-11 DE DE19537698A patent/DE19537698A1/de not_active Withdrawn
-
1996
- 1996-10-04 AT AT96934542T patent/ATE194134T1/de not_active IP Right Cessation
- 1996-10-04 KR KR1019980702631A patent/KR19990064150A/ko not_active Application Discontinuation
- 1996-10-04 PT PT96934542T patent/PT854844E/pt unknown
- 1996-10-04 EP EP19960934542 patent/EP0854844B1/de not_active Expired - Lifetime
- 1996-10-04 CA CA 2234559 patent/CA2234559A1/en not_active Abandoned
- 1996-10-04 AU AU72855/96A patent/AU709254B2/en not_active Ceased
- 1996-10-04 BR BR9611038A patent/BR9611038A/pt not_active Application Discontinuation
- 1996-10-04 JP JP51468997A patent/JPH11513306A/ja not_active Withdrawn
- 1996-10-04 US US09/051,410 patent/US6048460A/en not_active Expired - Fee Related
- 1996-10-04 CN CN96197579A patent/CN1199386A/zh active Pending
- 1996-10-04 HU HU9903415A patent/HUP9903415A2/hu unknown
- 1996-10-04 WO PCT/EP1996/004326 patent/WO1997013726A1/de not_active Application Discontinuation
- 1996-10-04 ES ES96934542T patent/ES2150142T3/es not_active Expired - Lifetime
- 1996-10-04 DE DE59605515T patent/DE59605515D1/de not_active Expired - Fee Related
- 1996-10-10 ZA ZA9608549A patent/ZA968549B/xx unknown
- 1996-10-10 ID ID962906A patent/ID16328A/id unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102762505A (zh) * | 2010-08-12 | 2012-10-31 | 株式会社泰科企划 | 污泥浓缩方法和污泥浓缩系统 |
| CN102762505B (zh) * | 2010-08-12 | 2014-03-12 | 株式会社泰科企划 | 污泥浓缩方法和污泥浓缩系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7285596A (en) | 1997-04-30 |
| CA2234559A1 (en) | 1997-04-17 |
| WO1997013726A1 (de) | 1997-04-17 |
| ES2150142T3 (es) | 2000-11-16 |
| DE59605515D1 (de) | 2000-08-03 |
| ID16328A (id) | 1997-09-18 |
| KR19990064150A (ko) | 1999-07-26 |
| MX9802894A (es) | 1998-11-29 |
| DE19537698A1 (de) | 1997-04-17 |
| ZA968549B (en) | 1998-04-14 |
| HUP9903415A2 (hu) | 2000-12-28 |
| EP0854844A1 (de) | 1998-07-29 |
| US6048460A (en) | 2000-04-11 |
| JPH11513306A (ja) | 1999-11-16 |
| EP0854844B1 (de) | 2000-06-28 |
| BR9611038A (pt) | 1999-07-06 |
| ATE194134T1 (de) | 2000-07-15 |
| PT854844E (pt) | 2000-12-29 |
| AU709254B2 (en) | 1999-08-26 |
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