Backwashing - Hutchinson encyclopedia article about Backwashing Printer Friendly
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backwash
(redirected from Backwashing)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.07 sec.

backwash

The retreat of a wave that has broken on a beach. When a wave breaks, water rushes up the beach as swash and is then drawn back towards the sea as backwash.



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A new screen filter replaces the previous sand bed, thereby reducing the backwashing cleaning cycle from 90 sec to 12 sec.
Today's systems eliminate the need to chemically clean and preserve the system during non-operating times extending for weeks or even a few months by periodically backwashing the R/O filter with the pure, chlorine-free water previously produced by the system.
The mill also decided against using dissolved air flotation (DAF) clarifiers or backwashing pressure filters equipped with metallic filter elements.
 
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