regeneration of softener iwti a key problem of regeneration by soaking method
TRANSCRIPT
Regeneration of Regeneration of SoftenerSoftener
IWTI
A Key Problem of Regeneration by Soaking Method
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1
3
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Regenerant
0
Feeding - Soaking - draining
Without distributor
Spent regenerant
Declining potential of regeneration
Diluted by released water from resin
CompletedFresh Regenerant
Spent Regenerant
Uncompleted
Feeding - Soaking - draining
RegenerantWithout distributor
Completed
Uncompleted
Open
Uncompleted
Feeding - Soaking - Draining
Fresh Regenerant
RegenerantWithout distributor
Spent RegenerantSpent Regenerant
Feeding - Soaking - draining
Regenerant
CompletedFresh Regenerant
Spent Regenerant
Uncompleted
With defective distributor
Feeding - Soaking - Draining
Regenerant
Completed
Uncompleted
With defective distributor
Feeding - Soaking - draining
Regenerant
Completed
Uncompleted
Spent Regenerant
Fresh Regenerant
With completed distributor
Feeding - Soaking - draining
Regenerant
Completed
Uncompleted
With completed distributor
rapidly
Feeding - Soaking - draining
Regenerant
Completed
With completed distributor
Slowly
Feeding - Soaking - draining
Regenerant
Completed
Still in progress
Spent Regenerant
Fresh Regenerant
With completed distributor
A Key Problem of A Key Problem of Regeneration by Soaking Regeneration by Soaking Method Method
Wastewater of regenerant is held at the lower part of resin layer.
Moreover, solution of NaCl is diluted by released water from resin at the first stage of feeding
A Key Problem of Regeneration by A Key Problem of Regeneration by Soaking Method Soaking Method
So, the resin in the lower part of tank is not regenerated enough
At the last stage, if they drain out regenerant too rapidly, they cannot keep enough time to regenerate resin in the lower part
Improvement Idea Improvement Idea
They should feed and drain out regenerant more slowly
If they can expect for uniform current with regenerant distributor, water should be drained out to the bottom of tank before feeding regenerant