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METHOD FOR REMOVING SULFATE AND BICARBONATE IONS FROM SEA WATER OR BRACKISH WATER THROUGH THE USE OF WEAK ANIONIC EXCHANGE RESINS CONTAINING AMINO GROUPS OF THE PRIMARY AND SECONDARY TYPE

  • US 3,842,002 A
  • Filed: 03/29/1973
  • Issued: 10/15/1974
  • Est. Priority Date: 07/14/1969
  • Status: Expired due to Term
First Claim
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1. A METHOD FOR REMOVING SULFATE AND BICARBONATE IONS FROM SEA WATER OR BRACKISH WATER PRIOR TO BEING SUBJECTED TO DESALINATION IN A CONVENTIONAL DESALINATION PLANT, WHICH COMPRISES:

  • PERMITTING SAID SEA WATER OR BRACKISH WATER TO PASS THROUGH A BED CONTAINING THE CHLORIDE FORM OF A WEAK ANIONIC RESIN HAVING AMINO FUNCTIONAL GROUPS OF THE PRIMARY AND SECONDARY TYPE, SAID CHLORIDE FORM OF SAID RESIN BEING EXPRESSED AS R-CI, THUS PERMITTING THE SULFATE IONS IN SAID SEA WATER OR BRACKISH WATER TO BE EXCHANGED FOR THE CHLORIDE IONS OF SAID RESIN BY THE FOLLOWING EQUATION;

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