GB963157A - Dewatering of slurries and particularly of sewage sludge - Google Patents

Dewatering of slurries and particularly of sewage sludge

Info

Publication number
GB963157A
GB963157A GB5447/62A GB544762A GB963157A GB 963157 A GB963157 A GB 963157A GB 5447/62 A GB5447/62 A GB 5447/62A GB 544762 A GB544762 A GB 544762A GB 963157 A GB963157 A GB 963157A
Authority
GB
United Kingdom
Prior art keywords
solids
flocculated
slurry
polymer
generally
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
GB5447/62A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB963157A publication Critical patent/GB963157A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/016—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/008—Organic compounds containing oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/01—Organic compounds containing nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/01—Organic compounds containing nitrogen
    • B03D1/011—Quaternary ammonium compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/012—Organic compounds containing sulfur

Abstract

Aqueous slurries of flocculated or agglomerated amorphous organic solids such as sewage sludges are treated to facilitate mechanical dewatering by treatment with at least one anionic polymer and at least one cationic polymer added successively in optional order, the polymers being organic, water-soluble, and of sufficiently high molecular weight to avoid redispersing the flocculated or agglomerated solids in the slurry. The polymer added first should have an ionic charge corresponding to the prevailing or net charge of the organic solids in the slurry. The cationic polymer is generally an amine or quaternary ammonium salt and the anionic polymer generally has a plurality of sulphonate or carboxylic groups. A large number of suitable polymers are exemplified.
GB5447/62A 1961-09-05 1962-02-13 Dewatering of slurries and particularly of sewage sludge Expired GB963157A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13575061A 1961-09-05 1961-09-05

Publications (1)

Publication Number Publication Date
GB963157A true GB963157A (en) 1964-07-08

Family

ID=22469490

Family Applications (2)

Application Number Title Priority Date Filing Date
GB5447/62A Expired GB963157A (en) 1961-09-05 1962-02-13 Dewatering of slurries and particularly of sewage sludge
GB31189/62A Expired GB967607A (en) 1961-09-05 1962-08-14 Separation of highly dispersed organic solids from aqueous suspensions thereof

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB31189/62A Expired GB967607A (en) 1961-09-05 1962-08-14 Separation of highly dispersed organic solids from aqueous suspensions thereof

Country Status (5)

Country Link
BE (2) BE612513A (en)
CH (2) CH413738A (en)
FR (1) FR1340257A (en)
GB (2) GB963157A (en)
NL (1) NL282787A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118926A (en) * 1982-04-22 1983-11-09 Kurita Water Ind Ltd Process for dewatering sludges

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1116324A (en) * 1978-10-23 1982-01-12 Grace Dearborn Inc. Detoxification of cationic flocculants
US4382864A (en) * 1980-08-08 1983-05-10 Kurita Water Industries Ltd. Process for dewatering sludges
ZA818636B (en) * 1980-12-30 1982-10-27 Union Carbide Corp A process for the flocculation of mineral containing slurries
JPH01310800A (en) * 1988-06-10 1989-12-14 Aoki Corp Sludge flocculation method
JP2845495B2 (en) * 1989-07-03 1999-01-13 株式会社青木建設 Treatment method for low concentration turbid water
FR2655567A1 (en) * 1989-12-06 1991-06-14 Atochem Water treatment process with simultaneous flocculation and adsorption with the aid of partially hydrophobic polyelectrolytes
FR2655277A1 (en) * 1989-12-06 1991-06-07 Atochem PROCESS FOR TREATING WATER WITH SIMULTANEOUS FLOCCULATION AND ADSORPTION USING PARTIALLY HYDROPHOBIC POLYELECTROLYTES
US6086783A (en) * 1996-07-08 2000-07-11 Sony Corporation Polymer electrolyte, a polymer aggregating agent prepared therefrom, and a disposal of waste water
AU746925B2 (en) * 1998-01-12 2002-05-02 Sony Corporation A polymer electrolyte, a polymer aggregating agent prepared therefrom, and a disposal of waste water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118926A (en) * 1982-04-22 1983-11-09 Kurita Water Ind Ltd Process for dewatering sludges

Also Published As

Publication number Publication date
CH418991A (en) 1966-08-15
BE612513A (en) 1962-07-10
BE622154A (en) 1900-01-01
CH413738A (en) 1966-05-15
GB967607A (en) 1964-08-26
FR1340257A (en) 1963-10-18
NL282787A (en) 1900-01-01

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