×

Continuously variable aeration

  • US 8,377,305 B2
  • Filed: 09/15/2005
  • Issued: 02/19/2013
  • Est. Priority Date: 09/15/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method of controlling fouling in a membrane filtration system having at least one membrane extending between a lower header comprising a plurality of openings and an upper header, the method comprising:

  • providing a source of a gas;

    controlling delivery of the gas to the membrane filtration system at a continuously variable flow rate comprising one of a sinusoidal and triangular wave flow pattern;

    passing the gas at the continuously variable flow rate through at least one inlet pipe to the plurality of openings in the lower header; and

    contacting the at least one membrane with the gas at the continuously variable flow rate to produce a stable transmembrane pressure over time.

View all claims
  • 9 Assignments
Timeline View
Assignment View
    ×
    ×