GB969769A - Improvements in or relating to the dewatering of sewage sludge - Google Patents
Improvements in or relating to the dewatering of sewage sludgeInfo
- Publication number
- GB969769A GB969769A GB1121961A GB1121961A GB969769A GB 969769 A GB969769 A GB 969769A GB 1121961 A GB1121961 A GB 1121961A GB 1121961 A GB1121961 A GB 1121961A GB 969769 A GB969769 A GB 969769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wedge wire
- floor
- valve
- wedge
- wire
- 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/16—Treatment of sludge; Devices therefor by de-watering, drying or thickening using drying or composting beds
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)
- Treatment Of Sludge (AREA)
Abstract
969,769. Filters. BRITISH WEDGE WIRE CO. Ltd., and S. F. W. CRUNDALL. Oct. 31, 1961 [March 28, 1961], No. 11219/61. Heading B1D. Water is introduced into a tank 20, Fig. 2, through a valve 21 until it reaches the level of, or slightly above, a "wedge-wire" floor 12, whereupon the valve is closed and sewage sludge is allowed to run on to the floor. A valve 22 is then opened to permit drainage of all liquid. In Fig. 1 the base 11 is inclined as before, but only one valve, 17, is provided for introduction of water and removal of liquid. A displaceable bulkhead 18 may be provided, and may be formed of wedge wire to permit drainage of supernatant liquid. The fixed walls of the tank 10 may also be of wedge wire. The floor 12 may have upstanding ridges of triangular section, the walls of the ridges consisting of wedge wire. In Fig. 2 a supernatant remover in the form of a wedge wire screen 23 may be provided. The wedge wire floor may be displaceable in its own horizontal plane, like a conveyer, or it may be tippable. Specification 969,768 is referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1121961A GB969769A (en) | 1961-03-28 | 1961-03-28 | Improvements in or relating to the dewatering of sewage sludge |
| BE609817A BE609817A (en) | 1961-01-28 | 1961-10-31 | Sewage sludge dewatering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1121961A GB969769A (en) | 1961-03-28 | 1961-03-28 | Improvements in or relating to the dewatering of sewage sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB969769A true GB969769A (en) | 1964-09-16 |
Family
ID=9982198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1121961A Expired GB969769A (en) | 1961-01-28 | 1961-03-28 | Improvements in or relating to the dewatering of sewage sludge |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB969769A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5453773U (en) * | 1977-09-23 | 1979-04-13 |
-
1961
- 1961-03-28 GB GB1121961A patent/GB969769A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5453773U (en) * | 1977-09-23 | 1979-04-13 |
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