Patent ID: 8591737
Filing Date: 2013-11-26
Classification: C01B,C02F,C10G,C10J,C10K,C10L,D21C,Y02E,Y02P

Abstract:
1. A waste water treatment process for treating waste waters produced in a biomass-to-liquid process which biomass-to-liquid process comprises a process for producing synthesis gas from biomass, a Fisher Tropsch process utilizing a cobalt catalyst for converting said synthesis gas into liquid hydrocarbons, characterized in that said waste waters comprising an alcohol-contaminated aqueous effluent produced in said biomass-to-liquid-process are purified in a common waste water treatment process comprising a biological purification process with waste waters produced in a process for producing pulp and/or paper to which said biomass-to-liquid process is integrated, wherein said alcohol-contaminated effluent is diluted with an aqueous effluent from said process for producing pulp and/or paper for said biological purification process, and said alcohol in said effluent is provided in an amount which is effective in stabilizing and/or improving said purification process.