BR0213525A - Process for partial purification of reservoir water - Google Patents

Process for partial purification of reservoir water

Info

Publication number
BR0213525A
BR0213525A BR0213525-6A BR0213525A BR0213525A BR 0213525 A BR0213525 A BR 0213525A BR 0213525 A BR0213525 A BR 0213525A BR 0213525 A BR0213525 A BR 0213525A
Authority
BR
Brazil
Prior art keywords
reservoir water
partial purification
treated
clarified
water
Prior art date
Application number
BR0213525-6A
Other languages
Portuguese (pt)
Inventor
Dennis H Michalski
Kenneth J Jardine
Vaughn V Astley
Original Assignee
Imc Global Operations Inc
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
Priority claimed from US10/082,564 external-priority patent/US6758976B2/en
Application filed by Imc Global Operations Inc filed Critical Imc Global Operations Inc
Publication of BR0213525A publication Critical patent/BR0213525A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5254Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using magnesium compounds and phosphoric acid for removing ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/12Halogens or halogen-containing compounds
    • C02F2101/14Fluorine or fluorine-containing 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)
  • Removal Of Specific Substances (AREA)

Abstract

"PROCESSO PARA A PURIFICAçãO PARCIAL DE áGUA DE RESERVATóRIO". é descrito um processo para a purificação parcial de água de reservatório contaminada de planta de ácido fosfórico, no qual a água do reservatório é tratada em seq³ência, com dois componentes básicos, clarificada, colocada em repouso, clarificada outra vez e acidulada. A água de reservatório tratada dessa forma, ainda contendo a maior parte do fosfato originalmente presente, pode então ser concentrada através da remoção de água essencialmente pura, utilizando-se quaisquer meios convencionais de concentração, sem a formação de precipitados sólidos. Adicionalmente, é descrito um processo simplificado para a purificação parcial de água de reservatório contaminada de planta de ácido fosfórico tendo uma relação molar de cálcio e magnésio para flúor maior do que, ou igual a cerca de 0,60, no qual a água de reservatório é tratada com um composto básico, clarificada, colocada em repouso, clarificada outra vez e reacidulada. A água de reservatório tratada dessa forma, ainda contendo a maior parte do fosfato presente originalmente, pode então ser concentrada através da remoção de água essencialmente pura, utilizando-se quaisquer meios convencionais de concentração, sem a formação de precipitado sólidos."PROCESS FOR PARTIAL PURIFICATION OF RESERVOIR WATER". A process for the partial purification of contaminated reservoir water from a phosphoric acid plant is described in which the reservoir water is treated sequentially with two basic components, clarified, put to rest, clarified again and acidulated. Thus treated reservoir water, still containing most of the phosphate originally present, can then be concentrated by removing essentially pure water using any conventional means of concentration without the formation of solid precipitates. Additionally, a simplified process for the partial purification of phosphoric acid plant contaminated reservoir water having a molar calcium and magnesium to fluorine molar ratio greater than or equal to about 0.60 is described, in which the reservoir water It is treated with a basic compound, clarified, rested, clarified again and reacidified. Thus treated reservoir water, still containing most of the originally present phosphate, can then be concentrated by removing essentially pure water using any conventional means of concentration without the formation of solid precipitates.

BR0213525-6A 2001-10-25 2002-10-22 Process for partial purification of reservoir water BR0213525A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US35335901P 2001-10-25 2001-10-25
US10/082,564 US6758976B2 (en) 2001-10-25 2002-02-21 Simplified purification of phosphoric acid plant pond water
US10/082,841 US6758977B2 (en) 2001-10-25 2002-02-21 Purification of phosphoric acid plant pond water
PCT/US2002/033775 WO2003035557A1 (en) 2001-10-25 2002-10-22 Purification of phosphoric acid plant pond water

Publications (1)

Publication Number Publication Date
BR0213525A true BR0213525A (en) 2004-10-19

Family

ID=27374296

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0213525-6A BR0213525A (en) 2001-10-25 2002-10-22 Process for partial purification of reservoir water

Country Status (7)

Country Link
EP (1) EP1438264A1 (en)
CN (1) CN1608034A (en)
BR (1) BR0213525A (en)
CA (1) CA2463361A1 (en)
IL (1) IL161385A0 (en)
MA (1) MA26396A1 (en)
WO (1) WO2003035557A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383057C (en) * 2005-08-31 2008-04-23 刘天暘 Method for removing impurities in phosphoric acid and deposition purificant used in the method
US8206592B2 (en) 2005-12-15 2012-06-26 Siemens Industry, Inc. Treating acidic water
CN106746088A (en) * 2016-12-23 2017-05-31 程艳青 A kind of processing system and handling process of fluorine-containing trade effluent

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1045258A (en) * 1974-04-03 1978-12-26 Ronald J. Hirko Recovery of fluorine and phosphate values from waste water
US4171342A (en) * 1974-04-03 1979-10-16 Occidental Chemical Company Recovery of calcium fluoride from phosphate operation waste water
US5316748A (en) * 1991-03-14 1994-05-31 Palm Gordon F Phosphoric acid manufacturing with converted waters

Also Published As

Publication number Publication date
IL161385A0 (en) 2004-09-27
CN1608034A (en) 2005-04-20
MA26396A1 (en) 2004-12-01
CA2463361A1 (en) 2003-05-01
EP1438264A1 (en) 2004-07-21
WO2003035557A1 (en) 2003-05-01

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]