GB1385822A - Activated sludge sewage treatment process and system - Google Patents
Activated sludge sewage treatment process and systemInfo
- Publication number
- GB1385822A GB1385822A GB1204572A GB1204572A GB1385822A GB 1385822 A GB1385822 A GB 1385822A GB 1204572 A GB1204572 A GB 1204572A GB 1204572 A GB1204572 A GB 1204572A GB 1385822 A GB1385822 A GB 1385822A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- oxygen
- enclosed
- aeration zone
- gas
- 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
- 239000010802 sludge Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- 239000010865 sewage Substances 0.000 title 1
- 238000005273 aeration Methods 0.000 abstract 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 6
- 239000001301 oxygen Substances 0.000 abstract 6
- 229910052760 oxygen Inorganic materials 0.000 abstract 6
- 239000007789 gas Substances 0.000 abstract 5
- 239000007788 liquid Substances 0.000 abstract 5
- 239000002699 waste material Substances 0.000 abstract 3
- 238000005276 aerator Methods 0.000 abstract 2
- 238000005192 partition Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
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
-
- 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
- C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
-
- 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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Activated Sludge Processes (AREA)
Abstract
1385822 Activated sludge process AIR PRODUCTS & CHEMICALS Inc 15 March 1972 [18 March 1971 14 Feb 1972] 12045/72 Heading ClC An apparatus for treating waste liquid by the activated sludge process comprises an enclosed aeration zone to which is supplied oxygen-rich gas containing at least 35% oxygen, and an aeration zone which is open to the atmosphere and in which liquid is mixed with atmospheric air or oxygen-lean air. The enclosed aeration zone may comprise a chamber divided into subchambers by partitions of a number of interconnected separate chambers. The open aeration zone may comprise more than one chamber. In operation at least 25% of the biological oxygen demand of the liquid is satisfied in the enclosed aeration zone. The dissolved oxygen content is maintained at least 3 p.p.m. in at least part of the enclosed aeration zone. In Fig. 1 in enclosed aeration zone 12 waste liquid from line 16 and sludge recycled from settler 18 is mixed and aerated with oxygen-rich gas from source 51. Gas is removed from zone 12 and pumped through diffusers 56. Gas is vented from zone 12 under the control of valve 55 when the oxygen content of the gas in the zone is below a predetermined value. The waste liquid is subsequently aerated with atmospheric air in the zone provided with surface aerators 60 and settled in settler 18. The enclosed zone may be provided with surface aerators.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12560271A | 1971-03-18 | 1971-03-18 | |
| US22619972A | 1972-02-14 | 1972-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1385822A true GB1385822A (en) | 1975-03-05 |
Family
ID=26823735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1204572A Expired GB1385822A (en) | 1971-03-18 | 1972-03-15 | Activated sludge sewage treatment process and system |
Country Status (8)
| Country | Link |
|---|---|
| AU (1) | AU3954672A (en) |
| BE (1) | BE780731A (en) |
| BR (1) | BR7201577D0 (en) |
| DE (1) | DE2212715A1 (en) |
| FR (1) | FR2130406B1 (en) |
| GB (1) | GB1385822A (en) |
| IT (1) | IT965764B (en) |
| NL (1) | NL7203628A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2266661B1 (en) * | 1974-04-05 | 1978-12-01 | Degremont | |
| DE2800035C2 (en) * | 1978-01-02 | 1985-06-13 | Passavant-Werke AG & Co KG, 6209 Aarbergen | Process and device for wastewater purification |
| DE2800034C2 (en) * | 1978-01-02 | 1984-01-05 | Passavant-Werke AG & Co KG, 6209 Aarbergen | Wastewater treatment process as well as the facility for its implementation |
| DE2816390C2 (en) * | 1978-04-15 | 1983-10-06 | Boehnke, Botho, Prof. Dr.-Ing., 5100 Aachen | Plant for the treatment of wastewater according to the activated sludge process with several stabilization ditches |
| DE3045158A1 (en) * | 1980-12-01 | 1982-07-01 | Linde Ag, 6200 Wiesbaden | METHOD AND DEVICE FOR BIOLOGICAL WASTE WATER TREATMENT |
| DE3150902A1 (en) * | 1981-12-22 | 1983-06-30 | Linde Ag, 6200 Wiesbaden | Process and equipment for biological effluent treatment |
-
1972
- 1972-03-02 AU AU39546/72A patent/AU3954672A/en not_active Expired
- 1972-03-15 GB GB1204572A patent/GB1385822A/en not_active Expired
- 1972-03-15 BE BE780731A patent/BE780731A/en unknown
- 1972-03-16 IT IT4903372A patent/IT965764B/en active
- 1972-03-16 DE DE19722212715 patent/DE2212715A1/en active Pending
- 1972-03-17 BR BR157772A patent/BR7201577D0/en unknown
- 1972-03-17 FR FR7209462A patent/FR2130406B1/fr not_active Expired
- 1972-03-17 NL NL7203628A patent/NL7203628A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU3954672A (en) | 1973-09-06 |
| DE2212715A1 (en) | 1972-09-28 |
| IT965764B (en) | 1974-02-11 |
| BE780731A (en) | 1972-09-15 |
| FR2130406A1 (en) | 1972-11-03 |
| NL7203628A (en) | 1972-09-20 |
| FR2130406B1 (en) | 1977-09-02 |
| BR7201577D0 (en) | 1973-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |