GB442458A - Improvements relating to a method of and apparatus for sewage sludge digestion - Google Patents
Improvements relating to a method of and apparatus for sewage sludge digestionInfo
- Publication number
- GB442458A GB442458A GB2770834A GB2770834A GB442458A GB 442458 A GB442458 A GB 442458A GB 2770834 A GB2770834 A GB 2770834A GB 2770834 A GB2770834 A GB 2770834A GB 442458 A GB442458 A GB 442458A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- tank
- paddles
- compartments
- 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
- C02F3/286—Anaerobic digestion processes including two or more steps
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
442,458. Treating sewage. DORR CO., Inc., 247, Park Avenue, New York, U.S.A. Sept. 27, 1934, No. 27708. Convention date, Dec. 30, 1933. [Class 111] A tank for the digestion of sewage sludge is fitted withpaddle blades which move in a substantially vertical plane. They may extend for part of their movement above the level of the sludge so as to break up scum and cause it to be submerged. The tank 1 is divided by vertical walls 2, 3, into compartments in each of which paddles 10 are mounted on a shaft 5 driven from an electric motor 7. Each compartment has a sludge inlet 14 and the paddles near the inlet end mix the freshly introduced sludge with digesting sludge. The sludge settles at the further end where there is a valved outlet pipe 15 for sludge and an overflow for supernatant liquid. Heating coils or pipes 17 are associated with the shafts 5 and paddles. The tank may have covers 11 with gas-collecting domes 13. One only of the three compartments may be used as a sludge digester the others being used as settling tanks.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US442458XA | 1933-12-30 | 1933-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB442458A true GB442458A (en) | 1936-02-10 |
Family
ID=21931298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2770834A Expired GB442458A (en) | 1933-12-30 | 1934-09-27 | Improvements relating to a method of and apparatus for sewage sludge digestion |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB442458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982002706A1 (en) * | 1981-02-11 | 1982-08-19 | Wikholm Bert Stefan | Apparatus for fermentation of organic material |
-
1934
- 1934-09-27 GB GB2770834A patent/GB442458A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982002706A1 (en) * | 1981-02-11 | 1982-08-19 | Wikholm Bert Stefan | Apparatus for fermentation of organic material |
| US4698310A (en) * | 1981-02-11 | 1987-10-06 | Alfa-Laval Ab | Apparatus for fermentation of organic material |
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