GB1517422A - Dewatering of sewage sludges - Google Patents
Dewatering of sewage sludgesInfo
- Publication number
- GB1517422A GB1517422A GB1310/76A GB131076A GB1517422A GB 1517422 A GB1517422 A GB 1517422A GB 1310/76 A GB1310/76 A GB 1310/76A GB 131076 A GB131076 A GB 131076A GB 1517422 A GB1517422 A GB 1517422A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- dewatering
- polymer
- groups
- alkyl
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
1517422 Dewatering sludge ALLIED COLLOIDS Ltd 23 Dec 1976 [14 Jan 1976] 01310/76 Heading C1C A sludge is dewatered by flocculating the sludge by addition of a polymer and subjecting the flocculated sludge to pressure filtration, the polymer having a viscosity, measured on a 5% solution containing 3% sodium chloride by a Brookfield viscometer at 20C, of at least 4,600 c.p.s., and containing at least 60 mole per cent groups of the formula or a salt or quaternary ammonium salt thereof where R is hydrogen or methyl and the groups R', which may be the same or different, are each C 1 to 4 alkyl or hydroxy alkyl or together with the nitrogen atom form a C5 to 7 ring.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1310/76A GB1517422A (en) | 1976-01-14 | 1976-01-14 | Dewatering of sewage sludges |
DE19772700654 DE2700654A1 (en) | 1976-01-14 | 1977-01-08 | PROCESS FOR DRAINING AN ORGANIC SUSPENSION USING HIGH MOLECULAR MANNICH PRODUCTS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1310/76A GB1517422A (en) | 1976-01-14 | 1976-01-14 | Dewatering of sewage sludges |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1517422A true GB1517422A (en) | 1978-07-12 |
Family
ID=9719774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1310/76A Expired GB1517422A (en) | 1976-01-14 | 1976-01-14 | Dewatering of sewage sludges |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2700654A1 (en) |
GB (1) | GB1517422A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663123A (en) * | 1992-07-15 | 1997-09-02 | Kb Technologies Ltd. | Polymeric earth support fluid compositions and method for their use |
US6248697B1 (en) | 1997-02-12 | 2001-06-19 | Kb Technologies, Ltd. | Composition and method for a dual-function soil-grouting excavating or boring fluid |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2920350A1 (en) | 1979-05-19 | 1980-11-20 | Basf Ag | METHOD FOR DRAINING CLEANER SLUDGE ON CHAMBER FILTER PRESSES |
DE202780T1 (en) * | 1985-04-25 | 1988-01-14 | Allied Colloids Group Ltd., Bradford, Yorkshire | FLOCKING PROCEDURE. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3171805A (en) * | 1963-04-29 | 1965-03-02 | American Cyanamid Co | Flocculation of sewage |
US3409546A (en) * | 1966-06-01 | 1968-11-05 | Dow Chemical Co | Method for dewatering sewage sludge with a mixture of polymers |
US3414514A (en) * | 1966-11-15 | 1968-12-03 | Hercules Inc | Process of dewatering a concentrated sewage slurry |
DE1917050A1 (en) * | 1968-04-10 | 1969-10-23 | Sandoz Ag | Process for improving the filtration ability of swellable mineral masses suspended in water |
GB1373034A (en) * | 1971-02-24 | 1974-11-06 | Allied Colloids Ltd | Flocculating agents and processes |
-
1976
- 1976-01-14 GB GB1310/76A patent/GB1517422A/en not_active Expired
-
1977
- 1977-01-08 DE DE19772700654 patent/DE2700654A1/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663123A (en) * | 1992-07-15 | 1997-09-02 | Kb Technologies Ltd. | Polymeric earth support fluid compositions and method for their use |
US6248697B1 (en) | 1997-02-12 | 2001-06-19 | Kb Technologies, Ltd. | Composition and method for a dual-function soil-grouting excavating or boring fluid |
Also Published As
Publication number | Publication date |
---|---|
DE2700654A1 (en) | 1977-07-21 |
DE2700654C2 (en) | 1987-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19961222 |