SE9702056L - Water purification procedure and means - Google Patents

Water purification procedure and means

Info

Publication number
SE9702056L
SE9702056L SE9702056A SE9702056A SE9702056L SE 9702056 L SE9702056 L SE 9702056L SE 9702056 A SE9702056 A SE 9702056A SE 9702056 A SE9702056 A SE 9702056A SE 9702056 L SE9702056 L SE 9702056L
Authority
SE
Sweden
Prior art keywords
waste water
water purification
purification procedure
calcium
weight
Prior art date
Application number
SE9702056A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE512118C2 (en
SE9702056D0 (en
Inventor
Tord Georg Eriksson
Original Assignee
Tord Georg Eriksson
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 Tord Georg Eriksson filed Critical Tord Georg Eriksson
Priority to SE9702056A priority Critical patent/SE512118C2/en
Publication of SE9702056D0 publication Critical patent/SE9702056D0/en
Priority to EP98926015A priority patent/EP0988254A1/en
Priority to PCT/SE1998/001027 priority patent/WO1998054097A1/en
Priority to AU77943/98A priority patent/AU7794398A/en
Publication of SE9702056L publication Critical patent/SE9702056L/en
Publication of SE512118C2 publication Critical patent/SE512118C2/en

Links

Classifications

    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/56—Macromolecular compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

Process for the purification of alkaline waste water containing anionic compounds that may react with calcium and form water insoluble precipitates. A precipitating agent is added to the waste water. The agent contains a soluble calcium salt and a cationic polymer with molecule weight in the range of 1 to 12 millions in proportion by weight from 10:1 to 100:1 in an amount corresponding to 0.001 to 3 g calcium ion and the corresponding amount polymer per litre waste water. The formed precipitate is removed by using known techniques for the separation of solid and liquid substances.
SE9702056A 1997-05-30 1997-05-30 Procedure for water purification SE512118C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9702056A SE512118C2 (en) 1997-05-30 1997-05-30 Procedure for water purification
EP98926015A EP0988254A1 (en) 1997-05-30 1998-05-29 Process and agent for water purification
PCT/SE1998/001027 WO1998054097A1 (en) 1997-05-30 1998-05-29 Process and agent for water purification
AU77943/98A AU7794398A (en) 1997-05-30 1998-05-29 Process and agent for water purification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9702056A SE512118C2 (en) 1997-05-30 1997-05-30 Procedure for water purification

Publications (3)

Publication Number Publication Date
SE9702056D0 SE9702056D0 (en) 1997-05-30
SE9702056L true SE9702056L (en) 1998-12-28
SE512118C2 SE512118C2 (en) 2000-01-31

Family

ID=20407177

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9702056A SE512118C2 (en) 1997-05-30 1997-05-30 Procedure for water purification

Country Status (4)

Country Link
EP (1) EP0988254A1 (en)
AU (1) AU7794398A (en)
SE (1) SE512118C2 (en)
WO (1) WO1998054097A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE514966C2 (en) * 1999-09-20 2001-05-21 Alfa Laval Ab Procedure for the purification of water used for vehicle washing
SE9903594L (en) * 1999-10-06 2001-04-07 Kemira Kemi Ab Cationic polymers for sludge dewatering
WO2009104945A1 (en) * 2008-02-20 2009-08-27 Mendoza Ramirez Ma Leticia Biodegradable saponified polyamide resin obtained by synthesis in emulsion for the treatment of wastewater (industrial and domestic)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3137340A1 (en) * 1981-09-19 1983-04-07 Henkel KGaA, 4000 Düsseldorf METHOD FOR REGENERATING AQUEOUS DEGREASING AND CLEANING SOLUTIONS
DE3137341A1 (en) * 1981-09-19 1983-04-07 Henkel KGaA, 4000 Düsseldorf METHOD FOR REGENERATING AQUEOUS DEGREASING AND CLEANING SOLUTIONS
US4588508A (en) * 1984-11-13 1986-05-13 Nalco Cehmical Company Bimodal cationics for water clarification

Also Published As

Publication number Publication date
WO1998054097A1 (en) 1998-12-03
AU7794398A (en) 1998-12-30
SE512118C2 (en) 2000-01-31
SE9702056D0 (en) 1997-05-30
EP0988254A1 (en) 2000-03-29

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Legal Events

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