GB587400A - Improvements in or relating to process of and apparatus for treating sewage and other waste liquors - Google Patents
Improvements in or relating to process of and apparatus for treating sewage and other waste liquorsInfo
- Publication number
- GB587400A GB587400A GB705444A GB705444A GB587400A GB 587400 A GB587400 A GB 587400A GB 705444 A GB705444 A GB 705444A GB 705444 A GB705444 A GB 705444A GB 587400 A GB587400 A GB 587400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sewage
- aerator
- aeration zone
- conduit
- outlet
- 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
- 239000010865 sewage Substances 0.000 title abstract 14
- 239000002699 waste material Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 238000005276 aerator Methods 0.000 abstract 8
- 238000005273 aeration Methods 0.000 abstract 5
- 239000010802 sludge Substances 0.000 abstract 4
- 230000001580 bacterial effect Effects 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- 239000007787 solid 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
- C02F3/1205—Particular type of activated sludge processes
- C02F3/121—Multistep 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)
- 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)
- Activated Sludge Processes (AREA)
Abstract
587,400. Treating sewage &c. INFILCO, Inc. April 17, 1944, No. 7054. Convention date, April 21, 1943. [Class 111] An activated sludge process of treating sewage and other waste liquors includes the steps of passing the sewage through an aeration zone, clarifying aerated sewage, discharging the clarified sewage to waste, returning bacterial solids separated from the clarified sewage to the aeration zone, and continuously mixing with the sewage entering the aeration zone unclarified aerated sewage taken from the outlet of the aeration zone in an amount controlled to produce a calculated time period for normal flow through the aeration zone. The amount of aerated sewage returned is preferably such that the time of flow of mixed liquor once through the aerator approximates to the time taken for the bacterial activity to reach its maximum. In the arrangement shown in Fig. 1, sewage after being partly purified in a primary clarifier 11, passes through conduit 15 to an aerator 16 containing air-diffusers 19. Baffles 21, 22 are provided to distribute the flow of sewage. The outlet pipe 23 is connected to a conduit 24 through which aerated sewage is recycled by a pump 25 back to the inlet 15 of the aerator. The pipe 23 also leads to a sedimentation chamber 28 from which clarified liquid is discharged through an outlet'35. Sludge is moved by raking mechanism 29 to an outlet 30, part of the sludge being discharged through a conduit 31 and part being returned by conduit 33 to the inlet end of the aerator. In a modification the aerator is divided by partitions into basins, each with a mechanical aerator. Fig. 5 shows respiration curves in which are compared the oxygen utilization of a conventional activated sludge plant (A) and a plant (D) in accordance with the invention, in the latter case sewage passing through the aerator in one hour, while due to recycling its total time in the aerator is three hours.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US587400XA | 1943-04-21 | 1943-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB587400A true GB587400A (en) | 1947-04-24 |
Family
ID=22018645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB705444A Expired GB587400A (en) | 1943-04-21 | 1944-04-17 | Improvements in or relating to process of and apparatus for treating sewage and other waste liquors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB587400A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2362794A1 (en) * | 1976-08-23 | 1978-03-24 | Mitsui Toatsu Chemicals | WASTEWATER TREATMENT PROCESS |
| FR2551049A1 (en) * | 1983-08-29 | 1985-03-01 | Magyar Asvanyolaj Es Foeldgaz | METHOD AND APPARATUS FOR PERFORMING SUBMERGED AEROBIC BIOLOGICAL PROCESSES |
| WO1990011971A1 (en) * | 1989-04-11 | 1990-10-18 | J. Stog Tec Gmbh | Process for the biological treatment of waste water using microorganisms |
| WO2006083522A1 (en) * | 2005-01-13 | 2006-08-10 | Proline Wastewater Equipment, L.L.C. | Aerobic wastewater management system, apparatus, and method |
-
1944
- 1944-04-17 GB GB705444A patent/GB587400A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2362794A1 (en) * | 1976-08-23 | 1978-03-24 | Mitsui Toatsu Chemicals | WASTEWATER TREATMENT PROCESS |
| FR2551049A1 (en) * | 1983-08-29 | 1985-03-01 | Magyar Asvanyolaj Es Foeldgaz | METHOD AND APPARATUS FOR PERFORMING SUBMERGED AEROBIC BIOLOGICAL PROCESSES |
| WO1990011971A1 (en) * | 1989-04-11 | 1990-10-18 | J. Stog Tec Gmbh | Process for the biological treatment of waste water using microorganisms |
| AU632551B2 (en) * | 1989-04-11 | 1993-01-07 | J. Stog Tec Gmbh | Process for the biological treatment of waste water using microorganisms |
| US5294340A (en) * | 1989-04-11 | 1994-03-15 | J. Stog Tec Gmbh | Process for the biological treatment of waste water using microorganisms |
| WO2006083522A1 (en) * | 2005-01-13 | 2006-08-10 | Proline Wastewater Equipment, L.L.C. | Aerobic wastewater management system, apparatus, and method |
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