13.07.2015 Views

Advances in Water Treatment and Enviromental Management

Advances in Water Treatment and Enviromental Management

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DEVELOPMENTS IN ION EXCHANGE DENITRIFICATION 197B. NITRATE SPECIFIC RESIN IN COUNTERFLOW REGENERATION:NB the reduction <strong>in</strong> total ions to waste, <strong>and</strong> <strong>in</strong> particular the reduction <strong>in</strong> waste chloride.7. CONCLUSIONA novel procedure for ion exchange denitrification employ<strong>in</strong>g a sulphate “Washout” step has been <strong>in</strong>vestigated,us<strong>in</strong>g computer simulation <strong>and</strong> tested on a pilot scale plant.The process is particularly advantageous for higher sulphate waters <strong>and</strong> offers potential advantages ofmore economical use of regenerants, improved effluent quality <strong>and</strong> the use of simpler <strong>and</strong> cheaper co-flowoperation.

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