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Scouring method

  • US 20060131234A1
  • Filed: 12/22/2005
  • Published: 06/22/2006
  • Est. Priority Date: 12/20/1996
  • Status: Active Grant
First Claim
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1. A method of removing accumulated solids from outer surfaces of porous hollow fiber membranes, wherein the membranes are situated in a vessel, the method comprising the steps of:

  • backwashing the membranes so as to dislodge accumulated solids from the outer surfaces of the membranes;

    providing, by means other than gas passing through the pores of the membranes, gas bubbles to the membranes, wherein the gas bubbles scour the outer surfaces of the membranes; and

    removing dislodged accumulated solids from the vessel.

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