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The treatment of effluents from the regeneration of cation exchanger by the membrane distillation (MD) process has been investigated. The composition ofthese effluents is complex due to the content ofresidual acid (1-50 g HCl/dm 3 ) and different amounts of various salts (ranging in concentration from 10 to 40 g/dm 3 ) including hardly soluble salts. Therefore, long-term investigations...
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