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Method for purifying aqueous suspension

  • US 6,322,703 B1
  • Filed: 02/02/2000
  • Issued: 11/27/2001
  • Est. Priority Date: 04/20/1999
  • Status: Expired due to Term
First Claim
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1. A method for purifying an aqueous suspension comprising:

  • feeding the aqueous suspension containing fine particles comprising an inorganic component from outer surfaces to inner surfaces of wavy hollow fiber membranes, which are collected with a bulkiness of from 1.45 to 2.00, and which each have an outer diameter from 0.5 to 3.1 mm and a flatness of from 0.8 to 1.0 to filter said aqueous suspension;

    the hollow fiber membranes having a bulkiness and being mounted or packed so as to substantially prevent rubbing of the membranes against each other during physical washing, and physically washing the hollow fiber membranes.

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