GB1505146A - Recovery of fluorine and phosphate values from waste wate - Google Patents

Recovery of fluorine and phosphate values from waste wate

Info

Publication number
GB1505146A
GB1505146A GB9696/75A GB969675A GB1505146A GB 1505146 A GB1505146 A GB 1505146A GB 9696/75 A GB9696/75 A GB 9696/75A GB 969675 A GB969675 A GB 969675A GB 1505146 A GB1505146 A GB 1505146A
Authority
GB
United Kingdom
Prior art keywords
waste water
solids
fluorine
treated
equivalents
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
GB9696/75A
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.)
Occidental Petroleum Corp
Original Assignee
Occidental Petroleum Corp
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 Occidental Petroleum Corp filed Critical Occidental Petroleum Corp
Publication of GB1505146A publication Critical patent/GB1505146A/en
Priority to GB24293/78A priority Critical patent/GB1601669A/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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A23K20/26—Compounds containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
    • C01B25/328—Defluorination during or after the preparation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/22—Fluorides
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/12—Halogens or halogen-containing compounds
    • C02F2101/14—Fluorine or fluorine-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Polymers & Plastics (AREA)
  • Animal Husbandry (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Geology (AREA)
  • Removal Of Specific Substances (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

1505146 Calcium fluoride and phosphate from waste water OCCIDENTAL PETROLEUM CORP 7 March 1975 [3 April 1974] 9696/75 Heading C1A Waste water containing fluorine and P 2 O 5 values is treated by agitating the waste water with an amount of the CaCO 3 slurry to provide between 0À3 and 0À8 equivalents of Ca<SP>++</SP> per equivalent of fluorine values in the water; thereafter, in a second stage, agitating the calcium carbonate-treated waste water with more CaCO 3 in an amount to form CaF 2 solids, and such that the total addition in the two stages provides not less than 0À8 equivalents and preferably 1-2 equivalents of Ca<SP>++</SP> per equivalent of fluorine values; and separating the solids from the aqueous phase following the second stage. The separated CaF 2 solids may be washed with a mineral acid and then with water and the washings combined with the treated waste water and agitated with CaO to raise the pH to 3-4 to recover further CaF 2 solids. After separation, the aqueous mix may be treated with more CaO to raise the pH to 5-7 to form insoluble CaHPO 4 .
GB9696/75A 1974-04-03 1975-03-07 Recovery of fluorine and phosphate values from waste wate Expired GB1505146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB24293/78A GB1601669A (en) 1975-03-07 1978-05-30 Recovery of fluorine and phosphate values from waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45756574A 1974-04-03 1974-04-03

Publications (1)

Publication Number Publication Date
GB1505146A true GB1505146A (en) 1978-03-30

Family

ID=23817225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9696/75A Expired GB1505146A (en) 1974-04-03 1975-03-07 Recovery of fluorine and phosphate values from waste wate

Country Status (6)

Country Link
JP (1) JPS50142496A (en)
BE (1) BE827305A (en)
CA (1) CA1045258A (en)
FR (1) FR2266662B1 (en)
GB (1) GB1505146A (en)
NL (1) NL7503991A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006337A1 (en) * 1978-06-09 1980-01-09 Occidental Chemical Company Recovery of hydrogen fluoride from metallic fluoride salts
WO2003035557A1 (en) * 2001-10-25 2003-05-01 Imc Global Operations Inc. Purification of phosphoric acid plant pond water
US6758976B2 (en) 2001-10-25 2004-07-06 Imc Global Operations Inc. Simplified purification of phosphoric acid plant pond water

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2533128A1 (en) * 1975-07-24 1977-02-10 Bayer Ag METHOD FOR MANUFACTURING SYNTHETIC FLUSSPAT
JPS5346496A (en) * 1976-10-12 1978-04-26 Toyo Soda Mfg Co Ltd Treating method for waste liquor discharged from wet process purification of phosphoric acid
JPS5421990A (en) * 1977-07-21 1979-02-19 Central Glass Co Ltd Process for removing phosphorus compnent in fluorite
US4374810A (en) * 1978-06-01 1983-02-22 Agrico Chemical Company Recovery of fluorine from pond water of wet process phosphoric acid plants and recycling of defluorinated water
JPS5645826A (en) * 1979-09-20 1981-04-25 Mitsui Toatsu Chem Inc Recovering and treating method for water-containing cake in wet process phosphoric acid manufacturing plant
JP4878098B2 (en) * 2001-09-12 2012-02-15 奥多摩工業株式会社 Treatment method for fluorine-containing wastewater
US10196289B2 (en) 2010-05-18 2019-02-05 Ostara Nutrient Recovery Technologies Inc. Treatment of phosphate-containing wastewater
CN102328984B (en) * 2011-08-11 2013-08-14 四川龙蟒钛业股份有限公司 Processing method of waste water in phosphorus chemical industry
JP5834750B2 (en) * 2011-10-13 2015-12-24 セントラル硝子株式会社 Method for treating wastewater containing a fluorophosphate compound
JP6024910B2 (en) * 2013-03-08 2016-11-16 三菱マテリアル株式会社 Calcium fluoride recovery method and recovery equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006337A1 (en) * 1978-06-09 1980-01-09 Occidental Chemical Company Recovery of hydrogen fluoride from metallic fluoride salts
WO2003035557A1 (en) * 2001-10-25 2003-05-01 Imc Global Operations Inc. Purification of phosphoric acid plant pond water
US6758976B2 (en) 2001-10-25 2004-07-06 Imc Global Operations Inc. Simplified purification of phosphoric acid plant pond water
US6758977B2 (en) 2001-10-25 2004-07-06 Imc Global Operations Inc. Purification of phosphoric acid plant pond water

Also Published As

Publication number Publication date
BE827305A (en) 1975-07-16
FR2266662A1 (en) 1975-10-31
CA1045258A (en) 1978-12-26
FR2266662B1 (en) 1981-02-27
NL7503991A (en) 1975-10-07
JPS50142496A (en) 1975-11-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee