METHOD OF TREATING PROCESS WATER Russian patent published in 2013 - IPC C02F1/00 C02F9/00 B01D61/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of treating by-product water formed during synthesis of liquid hydrocarbons from gaseous carbon monoxide and gaseous hydrogen via Fischer-Tropsch reaction etc. The method of treating by-product water involves performing distillation purification of the by-product water to obtain primary purified water, separating the primary purified water into purified water and concentrated water using a semi-permeable membrane, using the concentrated water as secondary purified water, performing biological treatment of the secondary purified water to obtain third treatment water and moving the third treatment water to the primary purified water while performing separation using the semi-permeable membrane once more.

EFFECT: invention provides efficient treatment of concentrated water to the required level and reduces production costs and energy.

9 cl, 2 dwg, 2 tbl, 2 ex