GB1330672A - Sewage sludge treatment process - Google Patents
Sewage sludge treatment processInfo
- Publication number
- GB1330672A GB1330672A GB4511670A GB4511670A GB1330672A GB 1330672 A GB1330672 A GB 1330672A GB 4511670 A GB4511670 A GB 4511670A GB 4511670 A GB4511670 A GB 4511670A GB 1330672 A GB1330672 A GB 1330672A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- passed
- sept
- heat exchanger
- mixed
- 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
-
- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
1330672 Treating sludge STERLING DRUG Inc 22 Sept 1970 [29 Sept 1969] 45116/70 Heading C1C A process for treating sewage sludge comprises heating the sludge for up to 240 sees. at 190-230 C., cooling the sludge rapidly to below 100 C and filtering the sludge to obtain a supernatant liquid having a colour value of below 3000 APHA units and a BOD 5 value of 2-6 g/l., the amount of oxygen present during the heating step being not greater than that required to reduce the COD of the sludge by 3%. In one process the sludge is mixed with a small amounted of gas, e.g. air, CO 2 or N 2 , passed through a heat exchanger to preheat it, passed through a reactor in which it is heated to 190- 230 C. by steam injection and passed again through the heat exchanger to cool it. Gases are separated from the cooled sludge which is then mixed with lime, alum or ferric chloride and allowed to settle in a settling tank. The settled sludge is vacuum filtered and passed to an incinerator. The liquid separated in the settling tank and by the vauum filter may be aerobically biologically treated and passed to an activated sludge system. The sludge may comprise primary, activated and/or digested sludges.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86189469A | 1969-09-29 | 1969-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1330672A true GB1330672A (en) | 1973-09-19 |
Family
ID=25337049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4511670A Expired GB1330672A (en) | 1969-09-29 | 1970-09-22 | Sewage sludge treatment process |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5027822B1 (en) |
CA (1) | CA938896A (en) |
CH (1) | CH516482A (en) |
DE (1) | DE2047875C2 (en) |
ES (1) | ES384043A1 (en) |
FR (1) | FR2062776A5 (en) |
GB (1) | GB1330672A (en) |
IL (1) | IL35333A (en) |
NL (1) | NL7014261A (en) |
SE (1) | SE375974B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109502925A (en) * | 2018-12-31 | 2019-03-22 | 天津滨港电镀企业管理有限公司 | Sewage disposal system and its processing method under a kind of cryogenic conditions |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2132953A1 (en) * | 1970-07-02 | 1972-01-05 | Sterling Drug Inc | Raw sludge treatment |
GB1561612A (en) * | 1976-03-13 | 1980-02-27 | Kubota Ltd | Process and apparatus for the treatment of sewage sludge |
CH616395A5 (en) * | 1976-09-29 | 1980-03-31 | Norm Amc Ag | Process for treating wet sludge from a sewage treatment plant and device for carrying out the process |
DE102005034371A1 (en) * | 2005-07-22 | 2007-01-25 | Siemens Ag | Apparatus and method for water treatment |
JP4567757B2 (en) | 2008-02-05 | 2010-10-20 | 稔 中村 | Automatic urine processing equipment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1179877B (en) * | 1956-12-19 | 1964-10-15 | L Von Roll A G | Process for dewatering digested or fresh sludge |
DE1484826A1 (en) * | 1964-09-11 | 1969-03-13 | Duengemittel Technik Ag | Process for the easier separation of especially colloidally dissolved substances from Klaerschlaemmen |
-
1970
- 1970-09-22 GB GB4511670A patent/GB1330672A/en not_active Expired
- 1970-09-22 IL IL35333A patent/IL35333A/en unknown
- 1970-09-28 NL NL7014261A patent/NL7014261A/xx not_active Application Discontinuation
- 1970-09-28 ES ES384043A patent/ES384043A1/en not_active Expired
- 1970-09-29 CH CH1437470A patent/CH516482A/en not_active IP Right Cessation
- 1970-09-29 SE SE7013213A patent/SE375974B/xx unknown
- 1970-09-29 CA CA094408A patent/CA938896A/en not_active Expired
- 1970-09-29 FR FR7035160A patent/FR2062776A5/fr not_active Expired
- 1970-09-29 DE DE2047875A patent/DE2047875C2/en not_active Expired
- 1970-09-29 JP JP45084758A patent/JPS5027822B1/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109502925A (en) * | 2018-12-31 | 2019-03-22 | 天津滨港电镀企业管理有限公司 | Sewage disposal system and its processing method under a kind of cryogenic conditions |
CN109502925B (en) * | 2018-12-31 | 2024-01-02 | 天津滨港电镀企业管理有限公司 | Sewage treatment system under low-temperature condition and treatment method thereof |
Also Published As
Publication number | Publication date |
---|---|
NL7014261A (en) | 1971-03-31 |
JPS5027822B1 (en) | 1975-09-10 |
CA938896A (en) | 1973-12-25 |
IL35333A (en) | 1973-06-29 |
SE375974B (en) | 1975-05-05 |
IL35333A0 (en) | 1970-11-30 |
DE2047875C2 (en) | 1983-09-01 |
CH516482A (en) | 1971-12-15 |
DE2047875A1 (en) | 1971-04-08 |
FR2062776A5 (en) | 1971-06-25 |
ES384043A1 (en) | 1973-05-01 |
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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 |