×

Ultrafiltration and microfiltration module and system

  • US 20030057155A1
  • Filed: 11/04/2002
  • Published: 03/27/2003
  • Est. Priority Date: 09/29/1999
  • Status: Active Grant
First Claim
Patent Images

1. A method of purifying feedwater to remove impurities including suspended solids therefrom, the method using water in-line pressure to permeate water through membranes and to backflush the membranes to remove solids collected thereon, the method comprising:

  • (a) providing a chamber defined by a wall having an inside and having;

    (i) a first end and a second end;

    (ii) membranes selected from ultrafiltration and microfiltration membranes extending between said first end and said second end; and

    (iii) a feedwater entrance for connecting to a water line to introduce feedwater to said chamber at in-line pressure, a permeate water exit and a concentrate water exit;

    (b) introducing feedwater through said entrance to said chamber;

    (c) filtering said water in said chamber by using said in-line pressure to pass water through the membranes to provide permeate water inside said membranes and to concentrate suspended solids outside said membranes to provide concentrate water;

    (d) collecting said permeate water from said membranes in a permeate collector and dispersing said permeate water for use;

    (e) directing a portion of said permeate water to a pressure tank which collects permeate water under in-line water pressure, said pressure tank in liquid connection with said permeate collector; and

    (f) periodically draining said chamber to remove concentrate water, concurrently therewith backflushing said membranes with permeate water from said pressure tank to remove solids from said membranes.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×