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Regeneration of Softener

Regeneration of Softener. IWTI. A Key Problem of Regeneration by Soaking Method. Feeding - Soaking - draining. Regenerant. Without distributor. 1. 5. 2. 3. 4. 3. 2. 1. 0. Spent regenerant. Declining potential of regeneration Diluted by released water from resin.

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Regeneration of Softener

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  1. Regeneration of Softener IWTI A Key Problem of Regeneration by Soaking Method

  2. Feeding - Soaking - draining Regenerant Without distributor 1 5 2 3 4 3 2 1 0

  3. Spentregenerant • Declining potential of regeneration • Diluted by released water from resin

  4. Feeding - Soaking - draining Regenerant Without distributor Fresh Regenerant Completed Uncompleted Spent Regenerant

  5. Feeding - Soaking - Draining Regenerant Without distributor Fresh Regenerant Completed Uncompleted Uncompleted Spent Regenerant Spent Regenerant Open

  6. Feeding - Soaking - draining With defective distributor Regenerant Fresh Regenerant Completed Uncompleted SpentRegenerant

  7. Feeding - Soaking - Draining With defective distributor Regenerant Completed Uncompleted

  8. Feeding - Soaking - draining With completed distributor Regenerant Fresh Regenerant Completed Uncompleted Spent Regenerant

  9. Feeding - Soaking - draining With completed distributor Regenerant Completed rapidly Uncompleted

  10. Feeding - Soaking - draining With completed distributor Regenerant Completed Slowly

  11. Feeding - Soaking - draining With completed distributor Regenerant Completed Fresh Regenerant Still in progress Spent Regenerant

  12. A Key Problem of Regeneration by Soaking 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

  13. A Key Problem of Regeneration by 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

  14. 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

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