Treatment for reducing inpurities in aqueous liquor

Details Treatment for reducing inpurities in aqueous liquor Treatment for reducing inpurities in aqueous liquor

B - Operations, Transporting

01

D

182/13, 48/35

B01D 61/02 (2006.01) C02F 1/44 (2006.01) C02F 1/58 (2006.01) C10J 3/00 (2006.01)

Patent

CA 2020834

ABSTRACT The invention relates to a method of treating an aqueous liquor, such as effluent liquor formed during coal gasification. The method comprises subjecting the liquor to dephenolation and ammonia stripping treatment to remove phenolic compounds and "free" ammonia from the liquor and then subjecting the resulting liquor, which still contains ammonium compounds and thus "fixed" ammonia, to reverse osmosis treatment to produce a permeate which is substantially free from impurities, including "fixed" ammonia.

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