GB662647A - Improvements in and relating to sewage treatment - Google Patents
Improvements in and relating to sewage treatmentInfo
- Publication number
- GB662647A GB662647A GB2078748A GB2078748A GB662647A GB 662647 A GB662647 A GB 662647A GB 2078748 A GB2078748 A GB 2078748A GB 2078748 A GB2078748 A GB 2078748A GB 662647 A GB662647 A GB 662647A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- tank
- pipe
- liquid
- sewage
- 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
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
- C02F3/28—Anaerobic digestion processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
662,647. Sewage treatment. GRIFFIN, J D. Aug. 6, 1948 [Aug. 15, 1947], No. 20787/48. Class 111 Sewage having a solid constituent and a watery constituent much in excess of the solid constituent is fed to the bottom of a tank 2 as by conduit 3 thereby causing an upward flow through the tank which flow is so ccntrolled, as by valve 4, that the solid part slows down relatively to the liquid, and forms in the tank a body of retained sludge which is treated by means of bacterial action while it is being displaced from below by the sludge of the incoming sewage and through all of which the water constituent flows upwardly and so washes the sludge and maintains the bacteria in an active state. The constituents may be progressively withdrawn from the upper portion of the tank together as through the overflow trough 11 and pipe 10, or the sludge may be removed from the top of the sludge body as through the channel 7 and pipe 8 below the liquid overflow trough 11 and pipe 10. The flow of the sludge should be such that it remains in the tank for a sufficient period to bring about the digestion. The sludge and liquid withdrawn together as through the pipe 10 may be subjected to aerobic treatment in which case it is fed, as through a valve 17, Fig. 4, to a sludge drying bed 18a and the drainage from the bed is fed by pipe 16 to an enforced ventilation biological filter 18. Purified effluent from the filter 18 may be recirculated through the retained sludge in the tank 2 as by pipe 21 feeding effluent from the filter to sewage entering the tank. In an alternative form of tank 2 the top converges towards the outlet for the liquid and the sludge outlet may be located at the commencement of the converging portion. Any detritus settling at the bottom of the tank 2 may be withdrawn as by pipe 23.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA662647X | 1947-08-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB662647A true GB662647A (en) | 1951-12-12 |
Family
ID=25561043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2078748A Expired GB662647A (en) | 1947-08-15 | 1948-08-06 | Improvements in and relating to sewage treatment |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB662647A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4059531A (en) * | 1974-08-08 | 1977-11-22 | Societe Degremont | Automatic sludge extraction and washing device for use in a water treatment settling apparatus |
-
1948
- 1948-08-06 GB GB2078748A patent/GB662647A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4059531A (en) * | 1974-08-08 | 1977-11-22 | Societe Degremont | Automatic sludge extraction and washing device for use in a water treatment settling apparatus |
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