GB1330672A - Sewage sludge treatment process - Google Patents

Sewage sludge treatment process

Info

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
Application number
GB4511670A
Inventor
G H Teletzke
P V Knopp
A H Erickson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STWB Inc
Original Assignee
Sterling Drug Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sterling Drug Inc filed Critical Sterling Drug Inc
Publication of GB1330672A publication Critical patent/GB1330672A/en
Expired legal-status Critical Current

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.
GB4511670A 1969-09-29 1970-09-22 Sewage sludge treatment process Expired GB1330672A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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