公开(公告)号：US3579322A

公开(公告)日：1971-05-18

申请号：US3579322D

申请日：1966-12-01

Applicant: CHEMICAL SEPARATIONS CORP

Inventor： HIGGINS IRWIN R

IPC: B01J47/10 ,  C02F9/00 ,  C05B7/00

CPC classification number: C05B7/00 ,  B01J47/10 ,  C02F9/00

Abstract: A CONTINUOUS PROCESS FOR TREATING A WASTE AQUEOUS STREAM CONTAINING PHOSPHATE VALUES TO RECOVER SAID PHOSPHATE VALUES INCLUDING INITIALLY REMOVING CONTAMINATING CATIONS FROM THE WASTE AQUEOUS STREAM BY CONTACTING THE SAME WITH A CATION EXCHANGE RESIN BED AND THEN CONTACTING THE ESSENTIALLY CONTAMINATING CATION-FREE AQUEOUS STREAM WITH AN ANION EXCHANGE RESIN BED TO ELIMINATE THE PHOSPHATE VALUES THEREFROM AND THEN REMOVING THE PHOSPHATE VALUES LOADED ON THE ANION EXCHANGE RESIN WITH A REGENERATING AGENT. IN ANOTHER EMBODIMENT, THE WASTE AQUEOUS STREAM BY-PASSES THE CATION EXCHANGE RESIN AND IS CONTACTED ONLY WITH A WEAK-BASE ANION EXCHANGE RESIN WHICH IS, THEREAFTER, CONTACTED WITH A REGENERATING AGENT, SUCH AS AMMONIUM HYDROIDE TO LIBERATE THE PHOSPHATE VALUES THEREFROM.

公开(公告)号：US3415377A

公开(公告)日：1968-12-10

申请号：US37312764

申请日：1964-05-22

Applicant: CHEMICAL SEPARATIONS CORP

Inventor： HIGGINS IRWIN R

IPC: A01J11/04 ,  A23C9/146

CPC classification number: A01J11/04 ,  A23C9/146

公开(公告)号：US3194663A

公开(公告)日：1965-07-13

申请号：US26958563

申请日：1963-04-01

Applicant: CHEMICAL SEPARATIONS CORP

Inventor： HIGGINS IRWIN R

IPC: A01J11/00 ,  A01J11/04 ,  A23C9/146 ,  B01J47/10

CPC classification number: B01J47/10 ,  A01J11/00 ,  A01J11/04 ,  A23C9/146