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Answer Posted / rahat
Backwashing
After the resins are exhausted, the bed is backwashed.
Backwashing is carried out by a uniform upward flow of water
through the resin bed. The backwash step expands the resin
bed releasing any entrapped particulate matter & removes the
channeling in the resin column if occurred during the
service cycle.
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sir,please give me some exam paper for referance. Thanks & Regards,
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