EP 0647209 A1 19950412 - PROCESS FOR THE REMOVAL OF PHOSPHOROUS.
Title (en)
PROCESS FOR THE REMOVAL OF PHOSPHOROUS.
Title (de)
VERFAHREN ZUR ENTFERNUNG VON PHOSPHOR.
Title (fr)
PROCEDE D'ELIMINATION DU PHOSPHORE.
Publication
Application
Priority
- AU 9300303 W 19930623
- AU PL313292 A 19920623
Abstract (en)
[origin: WO9400391A1] A process for the removal of phosphorous, in the form of orthophosphate, from an aqueous stream comprising the introduction into the stream of an effective amount of calcium ions, preferably gypsum derived, adjusting the pH to between about 5 and 8, introducing the stream into a reaction vessel wherein it is brought into contact with a gently stirred bed of fine particulate magnesia in an amount sufficient to fix the so-formed calcium phosphate, the pH of the stream in contact with the magnesia being from about 8 to 12 and removing a stream from the vessel which is depleted in phosphorous.
IPC 1-7
IPC 8 full level
C02F 1/28 (2006.01); C02F 1/52 (2006.01); C02F 1/58 (2006.01)
IPC 8 main group level
C02F (2006.01)
CPC (source: EP KR)
C02F 1/5236 (2013.01 - EP KR)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9400391 A1 19940106; AU 5013093 A 19940124; AU 654449 B2 19941103; BG 99358 A 19960329; BR 9306609 A 19981208; CA 2138259 A1 19940106; CZ 326394 A3 19951115; EP 0647209 A1 19950412; EP 0647209 A4 19950531; FI 945946 A0 19941216; FI 945946 A 19950118; HU 9403586 D0 19950228; HU T75444 A 19970528; KR 950702174 A 19950619; NO 944936 D0 19941219; NO 944936 L 19950222; RU 94046455 A 19961010; SK 159594 A3 19950607
DOCDB simple family (application)
AU 9300303 W 19930623; AU 5013093 A 19930623; BG 9935895 A 19950118; BR 9306609 A 19930623; CA 2138259 A 19930623; CZ 326394 A 19930623; EP 93912453 A 19930623; FI 945946 A 19941216; HU 9403586 A 19930623; KR 19940704678 A 19941221; NO 944936 A 19941219; RU 94046455 A 19941222; SK 159594 A 19930623