GB996717A - Method of dewatering sewage sludges, particularly sludges of communal origin - Google Patents

Method of dewatering sewage sludges, particularly sludges of communal origin

Info

Publication number
GB996717A
GB996717A GB31010/63A GB3101063A GB996717A GB 996717 A GB996717 A GB 996717A GB 31010/63 A GB31010/63 A GB 31010/63A GB 3101063 A GB3101063 A GB 3101063A GB 996717 A GB996717 A GB 996717A
Authority
GB
United Kingdom
Prior art keywords
press
filter
valve
conduit
filter aid
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
GB31010/63A
Inventor
Oswald Dipl Ing Busse
Hugo Ing Klesper
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.)
Aqseptence Group GmbH
Original Assignee
Passavant Werke AG and Co KG
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 Passavant Werke AG and Co KG filed Critical Passavant Werke AG and Co KG
Publication of GB996717A publication Critical patent/GB996717A/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
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/04—Controlling the filtration

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

996,717. Adding filter aid; filter presses. U. PASSAVANT, and P. SCHRAMM, [trading as PASSAVANT-WERKE]. Aug. 6, 1963 [Aug. 4, 1962], No. 31010/63. Heading B1D. Filter aid such as ash from a bunker 2 is first dosed at 1 into a water tank 3. Filtrate from the reservoir 5 of a filter press 22 is pumped (4) into the tank via conduit 6 after ash feed has ceased. Eventually the rising liquid acts on floats 10 to close ash pipe 9 by flap 8. Thereafter, liquid flowing out at 11 into a vessel 15 contacts an electrode 13 to effect switching off of pump 4 and closure of valve 12. These stages occur during a filtration stage in the press 22. When a new filtration stage is about to start, and a manometer in the press closure hydraulic circuit indicates that the closure pressure has been reached, a control elements effects opening of a valve 17 in a conduit 20 leading from a compressed air reservoir 27 to jets 19 in tank 3. Filter aid suspension is thereby forced up a conduit 23 past a check valve 24 and into the sludge inlet conduit 21 of the press, so as to be discharged on to the filter medium at a speed of flow corresponding to a multiple of the sedimentation speed of the filter aid. Valve 17 is then closed and sludge is fed to the press.
GB31010/63A 1962-08-04 1963-08-06 Method of dewatering sewage sludges, particularly sludges of communal origin Expired GB996717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP0029965 1962-08-04

Publications (1)

Publication Number Publication Date
GB996717A true GB996717A (en) 1965-06-30

Family

ID=7371754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31010/63A Expired GB996717A (en) 1962-08-04 1963-08-06 Method of dewatering sewage sludges, particularly sludges of communal origin

Country Status (5)

Country Link
AT (1) AT240298B (en)
BE (1) BE635799A (en)
DE (1) DE1459502A1 (en)
GB (1) GB996717A (en)
NL (1) NL296047A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190603A (en) * 1986-05-24 1987-11-25 Seitz Enzinger Noll Masch Method and apparatus for clarifying beer
US10597319B2 (en) 2015-02-02 2020-03-24 Suez International Method for managing air streams from mechanical dehydration of sludge, and corresponding device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190603A (en) * 1986-05-24 1987-11-25 Seitz Enzinger Noll Masch Method and apparatus for clarifying beer
DE3617519A1 (en) * 1986-05-24 1987-11-26 Seitz Enzinger Noll Masch TWO- OR MULTI-STAGE METHOD FOR REMOVING IMPURITIES FROM STILL OR CARBONIC LIQUIDS, IN PARTICULAR DRINKS, AND APPARATUS FOR CARRYING OUT THIS
GB2190603B (en) * 1986-05-24 1990-03-07 Seitz Enzinger Noll Masch Method of and apparatus for removing impurities from a liquid
US10597319B2 (en) 2015-02-02 2020-03-24 Suez International Method for managing air streams from mechanical dehydration of sludge, and corresponding device

Also Published As

Publication number Publication date
AT240298B (en) 1965-05-25
BE635799A (en) 1963-08-30
NL296047A (en) 1900-01-01
DE1459502A1 (en) 1969-02-13

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