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Scouring method

  • US 20040232076A1
  • Filed: 06/14/2004
  • Published: 11/25/2004
  • Est. Priority Date: 12/20/1996
  • Status: Abandoned Application
First Claim
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1. A method of aerating a membrane module immersed in a liquid substrate comprising the step of:

  • providing a flow of air to an aeration source below the membrane module, the flow of air alternating between a higher flow rate and a lower flow rate in repeated cycles of from greater than about 120 seconds to less than about 300 seconds in duration.

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