GB518353A - Method of and means for treating or dealing with sludge in sewage sludge digestion tanks - Google Patents

Method of and means for treating or dealing with sludge in sewage sludge digestion tanks

Info

Publication number
GB518353A
GB518353A GB2734338A GB2734338A GB518353A GB 518353 A GB518353 A GB 518353A GB 2734338 A GB2734338 A GB 2734338A GB 2734338 A GB2734338 A GB 2734338A GB 518353 A GB518353 A GB 518353A
Authority
GB
United Kingdom
Prior art keywords
bridge
sludge
pipe
tank
liquid
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
GB2734338A
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.)
PATRICK ARTHUR LEITCH
Original Assignee
PATRICK ARTHUR LEITCH
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 PATRICK ARTHUR LEITCH filed Critical PATRICK ARTHUR LEITCH
Priority to GB2734338A priority Critical patent/GB518353A/en
Publication of GB518353A publication Critical patent/GB518353A/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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1257—Oxidation ditches
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

518,353. Treating sewage. LETCH, P. A., and BOLTON, J. F. Sept. 20, 1938, No, 27343. [Class 111] Sludge is withdrawn from the bottom of a sludge digestion tank and delivered at the surface through injectorlike devices so that the thick liquid or scum on the surface is broken up and drawn down into the body of the liquid. Fig. 1 shows a circular tank with a central hollow column a<4> and a bridge c moved round the tank on wheels engaging rails on the wall of the central column and of the outer tank, by an electric motor d. The bridge also supports a second motor e<1> driving a pump e, which lifts sludges entering the column a<4> through apertures a<5>, and delivers it to a pipe e<3> on the bridge. The pipe e<3> has branches or nozzles f, each of which discharges the sludge down a bell-mouth pipe g, having its mouth below the surface of the liquid so that scum on the surface is drawn down the pipe. The pipes g are supported from the bridge by a carrier g<1> adjustable relatively to the bridge to allow for variation of the liquid level. Raw sludge for treatment may be supplied through a pipe r to the inlet of the pump and delivered through the nozzles f so that it is thoroughly mixed with liquid undergoing treatment. The method of treatment could be applied in a rectangular tank with bridge &c. moving to-and-fro thereover or with several fixed bridges, each having a series of nozzles.
GB2734338A 1938-09-20 1938-09-20 Method of and means for treating or dealing with sludge in sewage sludge digestion tanks Expired GB518353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2734338A GB518353A (en) 1938-09-20 1938-09-20 Method of and means for treating or dealing with sludge in sewage sludge digestion tanks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2734338A GB518353A (en) 1938-09-20 1938-09-20 Method of and means for treating or dealing with sludge in sewage sludge digestion tanks

Publications (1)

Publication Number Publication Date
GB518353A true GB518353A (en) 1940-02-23

Family

ID=10258034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2734338A Expired GB518353A (en) 1938-09-20 1938-09-20 Method of and means for treating or dealing with sludge in sewage sludge digestion tanks

Country Status (1)

Country Link
GB (1) GB518353A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452869A (en) * 1967-01-18 1969-07-01 Laval Inc De Settling tank and method of operation thereof
EP0036915A1 (en) * 1980-03-28 1981-10-07 Commonwork Enterprises Limited Capping device and slurry digester comprising the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452869A (en) * 1967-01-18 1969-07-01 Laval Inc De Settling tank and method of operation thereof
EP0036915A1 (en) * 1980-03-28 1981-10-07 Commonwork Enterprises Limited Capping device and slurry digester comprising the same

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