Filtration membrane cleaning method and apparatus using this method

Filtration membrane cleaning method and apparatus using this method

  • CN 1,946,472 A
  • Filed: 03/01/2005
  • Published: 04/11/2007
  • Est. Priority Date: 03/10/2004
  • Status: Active Application
First Claim
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1. the cleaning method of filter membrane, described filter membrane is an endothelium hollow fibre type, it is installed in one and is used in the casing of filter liquide, and be limited with therewith and gather the permeable compartment concentrating compartment and collect filtrate that be suspension and the remaining material on described film, the cleaning method of described filter membrane may further comprise the steps:

  • A) the described concentrated compartment of emptying is to discharge its filtrate of being contained and suspended material, thenB) carry out a back flush, make liquid see through described film and enter described concentrated compartment,, gas is circulated in described concentrated compartment so that the impurity that is deposited on the described film breaks away from and discharge from described permeable compartment,It is characterized in that at least one back flush stage, the gas and/or the liquid (15,16) of described back flush is carried in pulsation.

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