GB462941A - Improvements relating to the process of sewage sludge digestion and apparatus therefor - Google Patents
Improvements relating to the process of sewage sludge digestion and apparatus thereforInfo
- Publication number
- GB462941A GB462941A GB1302036A GB1302036A GB462941A GB 462941 A GB462941 A GB 462941A GB 1302036 A GB1302036 A GB 1302036A GB 1302036 A GB1302036 A GB 1302036A GB 462941 A GB462941 A GB 462941A
- Authority
- GB
- United Kingdom
- Prior art keywords
- digester
- pipe
- sludge
- tank
- coil
- 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
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- 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
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2886—Two story combinations of the Imhoff tank type
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
462,941. Treating sewage. DORR CO., Inc. May 8, 1936, No. 13020. Convention date, June 21, 1935. [Class 111] Sewage sludge is successively subjected to anaerobic thermophilic digestion at a temperature of 120 to 140‹ F. and anaerobic digestion at a lower temperature, preferably from 80 to 90‹ F. With the apparatus shown, sludge is passed intermittently by a pump 8 from a settling tank 2 through a heat-exchanger H and a pipe 7 to a digesting tank 10, an equivalent amount of sludge simultaneously passing from the tank 10 through a pipe 20, the exchanger H and a pipe 23 to a second digester 17. The contents of the digester 10 are heated by a coil 11, which is in circuit with a section 12 heated by means of a burner 14 to which gases given off in the digesters 10, 17 are supplied by pipes 25. The contents of the digester 17 are cooled by means of a coil 27 to which part of the effluent passing through the discharge pipe 5 of the settling tank 2 is delivered by a pump 29 through pipes 28, 30. This liquid is passed from the coil 27 through a pipe 31 into the inlet pipe 1 of the settling tank, the heat thus given to the raw sewage being stated to promote settlement. The digester 17 is of greater capacity than the digester 10 so that the period of retention for secondary digestion is greater than that for digestion at higher temperature in the tank 10. The tank 17 also serves as a settling tank, clear effluent being discharged through an inverted siphon 26 and sludge being discharged through a pipe 37. Some sludge from the digester 10 can be supplied through a pipe 42 to the sludge passing through the pipe 7, and some from the digester 17 can be supplied through a pipe 36. The pipe 36 has a branch 43 by means of which sludge from the digester 17 can be added to the sludge passing through the pipe 23 to the digester 17. Valves in the pipe connections described allow of sludge being passed direct from the settling-tank 2 to the digester 17. Should it be desirable to heat the liquid in the coil 27, it is circulated through a section 52 heated by a burner 55. The contents of both digesters should be alkaline. If those of the digester 10 become acid, alkaline sludge is passed to this digester from the digester 17. Specification 442,510 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US462941XA | 1935-06-21 | 1935-06-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB462941A true GB462941A (en) | 1937-03-18 |
Family
ID=21942674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1302036A Expired GB462941A (en) | 1935-06-21 | 1936-05-08 | Improvements relating to the process of sewage sludge digestion and apparatus therefor |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB462941A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2379485A1 (en) * | 1977-02-08 | 1978-09-01 | Union Carbide Corp | SLUDGE DIGESTION PROCESS |
FR2459206A1 (en) * | 1979-06-18 | 1981-01-09 | Grosse Wolf Dietrich | METHOD AND DEVICE FOR THE ANAEROBIC TREATMENT OF WASTEWATER |
WO1984000038A1 (en) * | 1982-06-16 | 1984-01-05 | Peter Korsgaard | Process and plant for producing biogas |
GB2124608A (en) * | 1982-05-19 | 1984-02-22 | George Murray Gibson | Treatment of organic waste |
CN111547970A (en) * | 2020-06-24 | 2020-08-18 | 湖州龙兴环保科技有限公司 | Organic sludge treatment composite microbial inoculum and use method thereof |
-
1936
- 1936-05-08 GB GB1302036A patent/GB462941A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2379485A1 (en) * | 1977-02-08 | 1978-09-01 | Union Carbide Corp | SLUDGE DIGESTION PROCESS |
FR2459206A1 (en) * | 1979-06-18 | 1981-01-09 | Grosse Wolf Dietrich | METHOD AND DEVICE FOR THE ANAEROBIC TREATMENT OF WASTEWATER |
GB2124608A (en) * | 1982-05-19 | 1984-02-22 | George Murray Gibson | Treatment of organic waste |
WO1984000038A1 (en) * | 1982-06-16 | 1984-01-05 | Peter Korsgaard | Process and plant for producing biogas |
CN111547970A (en) * | 2020-06-24 | 2020-08-18 | 湖州龙兴环保科技有限公司 | Organic sludge treatment composite microbial inoculum and use method thereof |
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