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De Mineralized water treatment plant (D.M. PLANT) :
Process :
Demineralization systems are very widely employed not only for conditioning water for high - pressure boilers but also for conditioning various process and rinse water the ion - exchange system chosen very accordingly to the volumes and composition of the raw waters, the effluent- quality require for different uses and the comparative capital and operation cost briefly if silica removal is not require the system may consist of a hydrogen - cation - exchanger unit and a weekly basic anion exchanger unit usually followed by a degasifier to remove by aeration most of the carbon dioxide formed from the bicarbonates in the first step when silica removal basic anion - exchanger unit usually with a degasifier between the unit to removed carbon dioxide ahead of the strongly basic anion -exchanger unit for uses where the very highest quality of effluent is required this may be followed by secondary polishing unit consisting of either.
A hydrogen - cation - exchanger unit and a strongly basic anion-exchanger unit or
A single unit containing an intimately mixed bed of a hydrogen cation - exchanger and a strongly basic anion exchanger
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