DK1634855T3 - Process for direct, selective selection of desired, low sludge index by continuous active sludge process - Google Patents
Process for direct, selective selection of desired, low sludge index by continuous active sludge processInfo
- Publication number
- DK1634855T3 DK1634855T3 DK05017462T DK05017462T DK1634855T3 DK 1634855 T3 DK1634855 T3 DK 1634855T3 DK 05017462 T DK05017462 T DK 05017462T DK 05017462 T DK05017462 T DK 05017462T DK 1634855 T3 DK1634855 T3 DK 1634855T3
- Authority
- DK
- Denmark
- Prior art keywords
- sludge
- index
- direct
- low
- basin
- Prior art date
Links
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
- C02F3/006—Regulation methods for biological treatment
-
- 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
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Activated Sludge Processes (AREA)
- Treatment Of Sludge (AREA)
Abstract
In the sewage treatment system, with at least one basin in a biological clarifying stage and a settling tank, a settled and/or settling fraction of sludge with a high index is taken as excess sludge from at least one edge of the settling tank opposite the inflow. The remaining sludge fraction near the inflow, with a low index, is passed to a preceding clarifying stage, and the sludge index is established in at least one basin of the biological clarifying stage. The steps are repeated until a given low sludge index is achieved in at least one biological clarifying basin.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410043815 DE102004043815A1 (en) | 2004-09-08 | 2004-09-08 | A method for the direct selective selection of a desired low sludge index in continuous activated sludge processes |
Publications (1)
Publication Number | Publication Date |
---|---|
DK1634855T3 true DK1634855T3 (en) | 2008-08-18 |
Family
ID=35033376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK05017462T DK1634855T3 (en) | 2004-09-08 | 2005-08-16 | Process for direct, selective selection of desired, low sludge index by continuous active sludge process |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1634855B1 (en) |
AT (1) | ATE394351T1 (en) |
DE (2) | DE102004043815A1 (en) |
DK (1) | DK1634855T3 (en) |
ES (1) | ES2305962T3 (en) |
PL (1) | PL1634855T3 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009008254A1 (en) | 2009-02-10 | 2010-10-14 | Holm, Nils, Dr. | Process for the treatment of percolate water produced by dry fermentation |
BR112015012248B8 (en) | 2012-11-27 | 2022-11-29 | Maureen Oshaughnessy | METHOD AND APPARATUS FOR SELECTING AND RETAINING SOLIDS WITH SUPERIOR SEDIMENTATION CHARACTERISTICS |
CN109001435B (en) * | 2018-07-16 | 2022-03-29 | 西安建筑科技大学 | Method for realizing accident early warning and management optimization of sewage treatment plant by adopting breathing pattern |
US11161760B2 (en) | 2018-08-13 | 2021-11-02 | Ovivo Inc. | Biomass selection and control for continuous flow granular/flocculent activated sludge processes |
AU2019321269A1 (en) * | 2018-08-13 | 2021-04-08 | Ovivo Inc. | Biomass selection and control for continuous flow granular/flocculent activated sludge processes |
US11999641B2 (en) | 2021-03-12 | 2024-06-04 | Hampton Roads Sanitation District | Method and apparatus for multi-deselection in wastewater treatment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4452699A (en) * | 1981-05-07 | 1984-06-05 | Shinryo Air Conditioning Co., Ltd. | Method of improving the SVI of mixed liquor in aeration tank |
US6596171B2 (en) * | 2001-04-10 | 2003-07-22 | Michael T. Unger | Enhanced activated sludge treatment |
-
2004
- 2004-09-08 DE DE200410043815 patent/DE102004043815A1/en not_active Withdrawn
-
2005
- 2005-08-16 EP EP20050017462 patent/EP1634855B1/en not_active Not-in-force
- 2005-08-16 DE DE200550003955 patent/DE502005003955D1/en active Active
- 2005-08-16 DK DK05017462T patent/DK1634855T3/en active
- 2005-08-16 ES ES05017462T patent/ES2305962T3/en active Active
- 2005-08-16 AT AT05017462T patent/ATE394351T1/en active
- 2005-08-16 PL PL05017462T patent/PL1634855T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE102004043815A1 (en) | 2006-03-23 |
PL1634855T3 (en) | 2008-10-31 |
EP1634855B1 (en) | 2008-05-07 |
ES2305962T3 (en) | 2008-11-01 |
ATE394351T1 (en) | 2008-05-15 |
EP1634855A1 (en) | 2006-03-15 |
DE502005003955D1 (en) | 2008-06-19 |
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