GB669589A - Improvements relating to the treatment of sewage and other sludge-containing liquors - Google Patents

Improvements relating to the treatment of sewage and other sludge-containing liquors

Info

Publication number
GB669589A
GB669589A GB14748/49A GB1474849A GB669589A GB 669589 A GB669589 A GB 669589A GB 14748/49 A GB14748/49 A GB 14748/49A GB 1474849 A GB1474849 A GB 1474849A GB 669589 A GB669589 A GB 669589A
Authority
GB
United Kingdom
Prior art keywords
sludge
heat
exchanger
heated
water
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
GB14748/49A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB14748/49A priority Critical patent/GB669589A/en
Publication of GB669589A publication Critical patent/GB669589A/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
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (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)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

669,589. Treating sewage. PORTEOUS, W. K. May 9, 1950. [June 1, 1949] No. 14748/49. Class 111. [Also in Groups XII and XIII] In a process for the heat treatment at a high temperature of sewage sludge which comprises passing the sludge to be treated through the inner tubes in series of two heat-exchangers each of which comprises runs of inner tubes surrounded by concentric outer tubes, cooling the heated sludge by water flowing in countercurrent in the second heat-exchanger and thereafter preheating the raw sludge by water flowing in countercurrent in the first heat-exchanger the sludge, after the pre-heating in the first heat-exchanger, is heat-treated in an independently heated apparatus and is then passed through the second heatexchanger. Cold raw sludge pumped in at c to a first heat-exchanger a is heated by water passing between an inner sludge pipe a<SP>1</SP> and an outer pipe a<SP>2</SP> and which has itself been heated in the annular spaces of a second heat-exchanger b. The sewage passes to a system of treatment tanks t<SP>1</SP>, t<SP>2</SP>, t<SP>3</SP>, which may be as described in Specification 539,622, and which are controlled by a multiple valve (not shown) so that one of the tanks is being filled while another is being emptied and the sludge is being retained quiescent in the third. The retained sludge is heated by steam passed from a pipe u to one of the inlets v<SP>1</SP>, v<SP>2</SP>, or v<SP>3</SP>. After treatment the sludge leaves by one of the outlets s<SP>1</SP>, s<SP>2</SP> or s<SP>3</SP> and gives up its heat to the water in the second heatexchanger b, finally passing to one or more decanting tanks w via a pressure control valve k. A plunger l in this valve is parted at n to allow the sludge under pressure to hold it up and at the same time escape from an outlet o. A similar valve j is provided to maintain the pressure and prevent steam formation in the water system. between the first heat-exchanger and an open tank e from which water is withdrawn by a pump f. The valve j may be dispensed with and the tank e closed. Specification 653,984 also is referred to.
GB14748/49A 1949-06-01 1949-06-01 Improvements relating to the treatment of sewage and other sludge-containing liquors Expired GB669589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14748/49A GB669589A (en) 1949-06-01 1949-06-01 Improvements relating to the treatment of sewage and other sludge-containing liquors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14748/49A GB669589A (en) 1949-06-01 1949-06-01 Improvements relating to the treatment of sewage and other sludge-containing liquors

Publications (1)

Publication Number Publication Date
GB669589A true GB669589A (en) 1952-04-02

Family

ID=10046788

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14748/49A Expired GB669589A (en) 1949-06-01 1949-06-01 Improvements relating to the treatment of sewage and other sludge-containing liquors

Country Status (1)

Country Link
GB (1) GB669589A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286037A (en) * 1994-01-13 1995-08-02 Micklewright Charles Anthony Two stage heat exchange for refrigeration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286037A (en) * 1994-01-13 1995-08-02 Micklewright Charles Anthony Two stage heat exchange for refrigeration
US5511384A (en) * 1994-01-13 1996-04-30 Likitcheva; Pichit Method and apparatus for heat accumulation from refrigeration machine
GB2286037B (en) * 1994-01-13 1997-08-13 Micklewright Charles Anthony Method and apparatus for heat accumulation from refrigeration machine

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