GB1231154A - - Google Patents
Info
- Publication number
- GB1231154A GB1231154A GB1231154DA GB1231154A GB 1231154 A GB1231154 A GB 1231154A GB 1231154D A GB1231154D A GB 1231154DA GB 1231154 A GB1231154 A GB 1231154A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- march
- fittering
- dewatered
- centrifuging
- 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
-
- 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
-
- 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
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
1,231,154. Treating sewage sludge. VON ROLL A.G. 25 March, 1969 [25 March, 1968], No. 15645/69. Heading C1C. Raw and/or digested sewage sludge is dewatered by bringing the pH of the sludge to between 5À5 and 6À5, heating the sludge at not less than 150 C. for not more than an hour, and then fittering or centrifuging the sludge.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH434968A CH469639A (en) | 1968-03-25 | 1968-03-25 | Process for the dewatering of digested and / or fresh sludge from sewage treatment plants |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1231154A true GB1231154A (en) | 1971-05-12 |
Family
ID=4274436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1231154D Expired GB1231154A (en) | 1968-03-25 | 1969-03-25 |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH469639A (en) |
DE (1) | DE1906158A1 (en) |
FR (1) | FR2003224B1 (en) |
GB (1) | GB1231154A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4988442A (en) * | 1988-11-07 | 1991-01-29 | Polypure, Inc. | Process for dewatering of biological sludge |
-
1968
- 1968-03-25 CH CH434968A patent/CH469639A/en unknown
-
1969
- 1969-02-06 FR FR6902745*[A patent/FR2003224B1/fr not_active Expired
- 1969-02-07 DE DE19691906158 patent/DE1906158A1/en active Pending
- 1969-03-25 GB GB1231154D patent/GB1231154A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2003224A1 (en) | 1969-11-07 |
FR2003224B1 (en) | 1975-08-01 |
CH469639A (en) | 1969-03-15 |
DE1906158A1 (en) | 1969-10-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |