Article | REF: J2797 V1

Cleaning of filtration membranes

Author: Murielle RABILLER-BAUDRY

Publication date: March 10, 2009, Review date: June 1, 2016

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2. Membrane cleaning and disinfection

As already mentioned, each production is a special case, but some questions/answers are of a general nature.

2.1 How can I slow down the cleaning frequency?

When clogging occurs in the form of a deposit, various physical unclogging techniques are available, all of which involve back filtration for a short time (backpulse, backflush, etc.) [28] : reversing the flow is comparable to a "water hammer" which loosens the deposit. Management of the backflow frequency depends on the fluid being filtered, but enables regular production flows to be maintained over a fairly long period. This practice is particularly well developed in water treatment, with the exception of NF spiral wound...

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Membrane cleaning and disinfection