FIELD: chemistry.
SUBSTANCE: invention relates to a method of treating waste water, formed when processing biomass to liquid biofuel, where the process of processing biomass to liquid biofuel involves obtaining synthesis gas from biomass, and Fischer-Tropsch synthesis to convert said synthesis gas to liquid hydrocarbons, wherein a cobalt catalyst is used, wherein waste water containing alcohol-contaminated waste water, formed when processing biomass to liquid biofuel, is purified in a common waste water treatment process, involving a biological treatment process together with waste water formed when producing cellulose and/or paper, with which is integrated the process of processing biomass to liquid biofuel, wherein the alcohol-contaminated wastes are diluted with waste water from said process of producing cellulose and/or paper before the biological treatment process. The invention also relates to an integrated apparatus and a method of integrating the process of processing biomass into liquid biofuel with a process of producing cellulose and/or paper.
EFFECT: high degree of waste water treatment.
24 cl, 2 dwg, 2 tbl, 1 ex
