GB1480190A - Methods of biologically purifying waste waters - Google Patents
Methods of biologically purifying waste watersInfo
- Publication number
- GB1480190A GB1480190A GB1402775A GB1402775A GB1480190A GB 1480190 A GB1480190 A GB 1480190A GB 1402775 A GB1402775 A GB 1402775A GB 1402775 A GB1402775 A GB 1402775A GB 1480190 A GB1480190 A GB 1480190A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxygenation
- stages
- air
- april
- activated sludge
- 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
- 238000000034 method Methods 0.000 title abstract 3
- 239000002351 wastewater Substances 0.000 title 1
- 238000006213 oxygenation reaction Methods 0.000 abstract 5
- 239000010802 sludge Substances 0.000 abstract 4
- 239000007789 gas Substances 0.000 abstract 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010926 purge Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000006228 supernatant 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
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Activated Sludge Processes (AREA)
- Physical Water Treatments (AREA)
Abstract
1480190 Activated sludge process DEGREMONT SOC GENERALE D'EPURATION ET D'ASSAINISSEMENT and L'AIR LIQUIDE SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUD 4 April 1975 [5 April 1974] 14027/75 Heading C1C In the activated sludge process, oxygenation is effected with pure O 2 or O 2 -enriched air in at least two stages, between any two consecutive stages of which the mixed liquor is treated to remove dissolved gases, e.g. by agitation, pressure reduction or purging with air or N 2 , optionally followed by addition of soda or lime. In the oxygenation stages the ratio of liquid volume to supernatant gas volume is preferably at least 20 : 1. The recycling sludge may be reactivated by oxygenation with air, O 2 or O 2 - enriched air. In Fig. 5, influent is fed via pipes 4A and 4B to oxygenation stages 1 and 3 which are interconnected via purger 2 and oxygenation gas pipe 7. Sludge from settler 9 is recycled via pipe 11. Other embodiments include three oxygenators and two purgers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7412068A FR2266661B1 (en) | 1974-04-05 | 1974-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1480190A true GB1480190A (en) | 1977-07-20 |
Family
ID=9137330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1402775A Expired GB1480190A (en) | 1974-04-05 | 1975-04-04 | Methods of biologically purifying waste waters |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE827509A (en) |
| CH (1) | CH592027A5 (en) |
| DE (1) | DE2514637A1 (en) |
| FR (1) | FR2266661B1 (en) |
| GB (1) | GB1480190A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3308963A1 (en) * | 1983-03-14 | 1984-09-27 | Otto 7512 Rheinstetten Schindele | Process for the continuous degassing and gas treatment of municipal and industrial waste waters, and flowing and stagnant waters and suspensions |
| DE3412553C2 (en) * | 1984-04-04 | 1987-04-16 | Fried. Krupp Gmbh, 4300 Essen | Process and device for biological aerobic purification of waste water |
| DE3834543A1 (en) * | 1988-10-11 | 1990-04-12 | Passavant Werke | METHOD FOR THE DISPOSAL OF A HIGH AMOUNT OF AMMONIUM-NITROGEN-RELATED WASTEWATERS |
| US5348655A (en) * | 1993-07-02 | 1994-09-20 | Liquid Carbonic Corporation | Method for increasing the capacity of sewage treatment plant |
| DE4443019C1 (en) * | 1994-12-02 | 1995-08-24 | Linde Ag | Biological waste-water treatment |
| US5798043A (en) * | 1997-12-01 | 1998-08-25 | Khudenko Engineering, Inc. | Control of anaerobic wastewater treatment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3954672A (en) * | 1971-03-18 | 1973-09-06 | Air Products And Chemicals Inc | Activated sludge sewage treatment process and system |
| US3957632A (en) * | 1972-03-24 | 1976-05-18 | Sterling Drug Inc. | Waste-water purification |
-
1974
- 1974-04-05 FR FR7412068A patent/FR2266661B1/fr not_active Expired
-
1975
- 1975-04-03 BE BE155043A patent/BE827509A/en not_active IP Right Cessation
- 1975-04-03 DE DE19752514637 patent/DE2514637A1/en not_active Withdrawn
- 1975-04-04 GB GB1402775A patent/GB1480190A/en not_active Expired
- 1975-04-04 CH CH431475A patent/CH592027A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE827509A (en) | 1975-10-03 |
| CH592027A5 (en) | 1977-10-14 |
| FR2266661A1 (en) | 1975-10-31 |
| DE2514637A1 (en) | 1975-10-09 |
| FR2266661B1 (en) | 1978-12-01 |
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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 |