GB1354539A – Process for the removal of phosphate from an aqueous composition
– Google Patents
GB1354539A – Process for the removal of phosphate from an aqueous composition
– Google Patents
Process for the removal of phosphate from an aqueous composition
Info
Publication number
GB1354539A
GB1354539A
GB3498571A
GB3498571A
GB1354539A
GB 1354539 A
GB1354539 A
GB 1354539A
GB 3498571 A
GB3498571 A
GB 3498571A
GB 3498571 A
GB3498571 A
GB 3498571A
GB 1354539 A
GB1354539 A
GB 1354539A
Authority
GB
United Kingdom
Prior art keywords
phosphate
flocculant
acrylate
july
water
Prior art date
1970-07-31
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
GB3498571A
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.)
1970-07-31
Filing date
1971-07-26
Publication date
1974-06-05
1971-07-26
Application filed by Dow Chemical Co
filed
Critical
Dow Chemical Co
1974-06-05
Publication of GB1354539A
publication
Critical
patent/GB1354539A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S210/00—Liquid purification or separation
Y10S210/902—Materials removed
Y10S210/906—Phosphorus containing
Abstract
1354539 Removing phosphates DOW CHEMICAL CO 26 July 1971 [31 July 1970] 34985/71 Headings C1A and C1C A process for removing soluble phosphate from an aqueous composition (e.g. sewage) comprises adding to the composition at least two equivalents (per equivalent of dissolved phosphate) of a water-soluble source of calcium, aluminium and/or iron ions, as a primary phosphase repcipitant, and at least one equivalent (based on the residual dissolved phosphate) of a water-soluble source of lanthanide metal, yttrium, scandium and/or hafnium ions, as a secondary phosphate precipitant, and separating the precipitated phosphate by sedimentation or filtration. The sources may be in the form of a chloride, sulphate, nitrate, acetate or aluminate. To aid separation a polymeric flocculant may be added. The flocculant may be prepared from one or more of the following: acrylamide, methacrylamide, acrylic acid, methacylic acid, alkali metal styrenesulphonate, acrylate and methacylate, acrylonitrile, methacylonitrile, styrene, vinyl acetate, oxazolidinone, pyrrolidinone, maleic acid, sodium ethyl acrylate and sodium carboxyalkyl acrylate. The flocculant may be carboxyalkyl cellulose ethers and starch derivatives.
GB3498571A
1970-07-31
1971-07-26
Process for the removal of phosphate from an aqueous composition
Expired
GB1354539A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US6009370A
1970-07-31
1970-07-31
Publications (1)
Publication Number
Publication Date
GB1354539A
true
GB1354539A
(en)
1974-06-05
Family
ID=22027306
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3498571A
Expired
GB1354539A
(en)
1970-07-31
1971-07-26
Process for the removal of phosphate from an aqueous composition
Country Status (6)
Country
Link
US
(1)
US3617569A
(en)
CA
(1)
CA943273A
(en)
DE
(1)
DE2138279A1
(en)
FR
(1)
FR2101976A5
(en)
GB
(1)
GB1354539A
(en)
SE
(1)
SE364697B
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2240333A
(en)
*
1990-01-17
1991-07-31
Mitsubishi Nuclear Fuel
Removing phosphates from waste organic solvents
US5276251A
(en)
*
1990-01-17
1994-01-04
Mitsubishi Nuclear Fuel Co.
Process for treating organic phosphoric acids
DE4325535A1
(en)
*
1993-07-29
1995-02-02
Walhalla Kalk Entwicklungs Und
Process for separating off phosphates from wastewaters
RU2498942C1
(en)
*
2012-04-10
2013-11-20
Леонид Асхатович Мазитов
Method of purifying waste water from phosphates
Families Citing this family (33)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3956118A
(en)
*
1968-05-23
1976-05-11
Rockwell International Corporation
Removal of phosphate from waste water
US3716484A
(en)
*
1971-05-10
1973-02-13
Michigan Chem Corp
Process for substantial removal of phosphates from wastewaters
DE2354917B2
(en)
*
1973-11-02
1981-05-21
Hoechst Ag, 6000 Frankfurt
Process for separating the solid-liquid system
NL7905111A
(en)
*
1979-06-30
1981-01-05
Stamicarbon
METHOD FOR CHEMICAL REMOVAL OF PHOSPHORUS COMPOUNDS FROM WASTE WATER AND METHOD FOR PURIFYING WASTE WATER.
US4444965A
(en)
*
1980-12-31
1984-04-24
Phillips Petroleum Company
Olefin polymerization using chromium on an aluminum phosphate produced from a concentrated mass
US4364855A
(en)
*
1980-12-31
1982-12-21
Phillips Petroleum Company
Production of aluminum phosphate from concentrated mass
DE3127570A1
(en)
*
1981-07-13
1983-04-28
Mecapec S.A., 8716 Schmerikon
METHOD AND DEVICE FOR FLOCKING FILTRATION OF WASTEWATER
US4507206A
(en)
*
1982-07-19
1985-03-26
Hughes Geoffrey F
Method for restoring and maintaining eutrophied natural bodies of waters
US4671882A
(en)
*
1983-08-31
1987-06-09
Deere & Company
Phosphoric acid/lime hazardous waste detoxification treatment process
SE452307B
(en)
*
1983-09-12
1987-11-23
Boliden Ab
PROCEDURE FOR PURIFICATION OF POLLUTANEOUS WATER SOLUTIONS CONTAINING ARSENIC AND / OR PHOSPHORUS
US4746457A
(en)
*
1987-03-05
1988-05-24
Calgon Corporation
Flocculation of suspended solids from aqueous solutions
DE4013375C2
(en)
*
1990-04-26
1994-12-22
Passavant Werke
Process for the removal of dissolved phosphorus contained in Suspensa from waste water
US5543049A
(en)
*
1991-02-04
1996-08-06
Delman R. Hogen
Microbial mediated water treatment
WO1994002421A1
(en)
*
1992-07-16
1994-02-03
Hogen Delman R
Microbial mediated method for soil and water treatment
EP0686132A4
(en)
*
1993-02-24
1996-03-13
Dudley John Mills
Treatment of swimming pool water
AUPO589697A0
(en)
1997-03-26
1997-04-24
Commonwealth Scientific And Industrial Research Organisation
Sediment remediation process
US6312604B1
(en)
*
1998-10-23
2001-11-06
Zodiac Pool Care, Inc.
Lanthanide halide water treatment compositions and methods
US6338800B1
(en)
2000-02-22
2002-01-15
Natural Chemistry, Inc.
Methods and compositions using lanthanum for removing phosphates from water
US6863825B2
(en)
2003-01-29
2005-03-08
Union Oil Company Of California
Process for removing arsenic from aqueous streams
WO2005115928A1
(en)
*
2004-05-18
2005-12-08
Biomass Processing Technology, Inc.
System for removing solids from aqueous solutions
EP1893534B1
(en)
*
2005-07-06
2011-09-07
Siemens Industry, Inc.
Improved phosphorus removal system and process
CA2532286A1
(en)
*
2006-01-05
2007-07-05
Seprotech Systems Incorporated
Removal of phosphates from wastewater
US8066874B2
(en)
2006-12-28
2011-11-29
Molycorp Minerals, Llc
Apparatus for treating a flow of an aqueous solution containing arsenic
US8349764B2
(en)
2007-10-31
2013-01-08
Molycorp Minerals, Llc
Composition for treating a fluid
US8252087B2
(en)
2007-10-31
2012-08-28
Molycorp Minerals, Llc
Process and apparatus for treating a gas containing a contaminant
WO2011005770A1
(en)
*
2009-07-06
2011-01-13
Molycorp Minerals Llc
Ceria for use as an antimicrobial barrier and disinfectant in a wound dressing
WO2012141895A2
(en)
*
2011-04-13
2012-10-18
Molycorp Minerals, Llc
Rare earth removal of phosphorus-containing materials
US9233863B2
(en)
2011-04-13
2016-01-12
Molycorp Minerals, Llc
Rare earth removal of hydrated and hydroxyl species
BR112016020631A2
(en)
2014-03-07
2018-05-15
Secure Natural Resources Llc
cerium (iv) oxide with exceptional arsenic removal properties
DE202015009083U1
(en)
*
2015-01-19
2016-09-06
Minnova Bns Gmbh
Device for binding dissolved phosphorus in ponds, swimming pools, biopools and aquariums
JP6274334B1
(en)
*
2017-02-24
2018-02-07
栗田工業株式会社
Wet paint booth circulating water treatment agent
WO2019005718A1
(en)
2017-06-26
2019-01-03
Monsanto Technology Llc
Phosphorus control for waste streams from glyphosate manufacturing processes
US20200156968A1
(en)
*
2017-07-07
2020-05-21
Chemtreat, Inc
Enhanced inorganic coagulants for wastewater treatment
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3155454A
(en)
*
1962-11-21
1964-11-03
Grace W R & Co
Recovery of trace element cations
GB1053030A
(en)
*
1963-03-21
US3402026A
(en)
*
1965-04-13
1968-09-17
Kerr Mc Gee Chem Corp
Precipitation of phosphorus values from aqueous media
US3488717A
(en)
*
1967-08-22
1970-01-06
Dow Chemical Co
Chemical precipitation and flocculation
US3506570A
(en)
*
1968-05-08
1970-04-14
Dow Chemical Co
Clarification of and phosphate removal from sewage
1970
1970-07-31
US
US60093A
patent/US3617569A/en
not_active
Expired – Lifetime
1971
1971-07-14
CA
CA118,229A
patent/CA943273A/en
not_active
Expired
1971-07-26
GB
GB3498571A
patent/GB1354539A/en
not_active
Expired
1971-07-30
DE
DE19712138279
patent/DE2138279A1/en
active
Pending
1971-07-30
FR
FR7128101A
patent/FR2101976A5/fr
not_active
Expired
1971-07-30
SE
SE09809/71A
patent/SE364697B/xx
unknown
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2240333A
(en)
*
1990-01-17
1991-07-31
Mitsubishi Nuclear Fuel
Removing phosphates from waste organic solvents
US5276251A
(en)
*
1990-01-17
1994-01-04
Mitsubishi Nuclear Fuel Co.
Process for treating organic phosphoric acids
GB2240333B
(en)
*
1990-01-17
1995-03-08
Mitsubishi Nuclear Fuel
Process for treating organic phosphoric acids
DE4325535A1
(en)
*
1993-07-29
1995-02-02
Walhalla Kalk Entwicklungs Und
Process for separating off phosphates from wastewaters
RU2498942C1
(en)
*
2012-04-10
2013-11-20
Леонид Асхатович Мазитов
Method of purifying waste water from phosphates
Also Published As
Publication number
Publication date
FR2101976A5
(en)
1972-03-31
SE364697B
(en)
1974-03-04
CA943273A
(en)
1974-03-05
DE2138279A1
(en)
1972-02-10
US3617569A
(en)
1971-11-02
Similar Documents
Publication
Publication Date
Title
GB1354539A
(en)
1974-06-05
Process for the removal of phosphate from an aqueous composition
GB1380807A
(en)
1975-01-15
Water-soluble sulphonate polymers as flocculants
GB1108737A
(en)
1968-04-03
Process for flocculating iron oxide suspensions
FR2385415A1
(en)
1978-10-27
PROCESS FOR REDUCING POLLUTING SUBSTANCES REDUCABLE IN AQUEOUS SOLUTION TO RECOVER METALS FROM WASTE WATER
CN105129944A
(en)
2015-12-09
Inorganic and modified chitosan composite polymer flocculant
ES8702504A1
(en)
1986-12-16
Flocculants for bauxite (red mud)
US3755531A
(en)
1973-08-28
Process for refining alumina
ES8204397A1
(en)
1982-07-16
Flocculating red mud suspension
US4291005A
(en)
1981-09-22
Settling out suspended solids in phosphoric acid product solutions
ES8405641A1
(en)
1984-06-16
Flocculating red mud suspension
HU9702302A2
(en)
1998-08-28
Method for purifying sodium aluminate solutions containing sodium oxalate
GB1481137A
(en)
1977-07-27
Process for the removal of dissolved aluminate from an alkaline chromate leach liquor
GB1413083A
(en)
1975-11-05
Anionic high molecular flocculants
GB1268890A
(en)
1972-03-29
Lithographic plate treating solutions
US2950195A
(en)
1960-08-23
Removal of metal ions from gum arabic
ES8405732A1
(en)
1984-06-16
Method of purifying uraniferous aqueous solutions
GB1295796A
(en)
1972-11-08
GB1528146A
(en)
1978-10-11
Process for digesting goethite-containing bauxites according to the bayer technology
JP2001162287A
(en)
2001-06-19
Method for treating boron-containing water and treatment agent
GB1296135A
(en)
1972-11-15
GB1443192A
(en)
1976-07-21
Removal of phosphate from waste water
GB901916A
(en)
1962-07-25
Separation process
GB1106573A
(en)
1968-03-20
Improvements in or relating to methods of producing water-soluble polyacrylamide
Kanazawa et al.
1974
Synthesis of Mg3 (PO4) 2· 8H2O
SU1204576A1
(en)
1986-01-15
Method of purifying waste water
Legal Events
Date
Code
Title
Description
1974-10-09
PS
Patent sealed [section 19, patents act 1949]
1978-02-22
PLNP
Patent lapsed through nonpayment of renewal fees
