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Membrane cleaning with pulsed airlift pump

  • US 9,206,057 B2
  • Filed: 02/11/2014
  • Issued: 12/08/2015
  • Est. Priority Date: 05/29/2007
  • Status: Active Grant
First Claim
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1. A method of operating a water treatment system positioned in a tank, the system comprising a membrane module including a plurality of hollow fiber membranes, a chamber positioned below the membrane module and having a liquid feed inlet and a gas inlet, the method comprising:

  • introducing a liquid feed into the chamber;

    applying a vacuum to the plurality of hollow fiber membranes; and

    introducing a gas to the gas inlet of the chamber at a constant flow rate to displace the liquid feed within the chamber and to distribute a gas/liquid flow at randomly spaced intervals into the membrane module.

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