Method of extracting light volatile solvents from a gaseous...

Details Method of extracting light volatile solvents from a gaseous... Method of extracting light volatile solvents from a gaseous...

B - Operations, Transporting

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D

B01D 53/84 (2006.01) B01D 53/72 (2006.01) C02F 3/28 (2006.01) C12M 1/04 (2006.01) C12M 1/107 (2006.01) C12M 1/40 (2006.01) C12P 5/02 (2006.01) C12S 5/00 (2006.01)

Patent

CA 2160311

An improved method and apparatus for treating a gaseous medium polluted with volatile organic solvents to produce a purified gaseous medium and a separate methane-rich and combustible gas. The method involves wet-scrubbing the gaseous medium with a liquid stream in a countercurrent wet scrubber to produce a purified gaseous medium and a separate liquid stream loaded with the volatile organic solvents; channelling the liquid stream loaded with the volatile organic solvents to an anaerobic bioreactor consisting of a sealed vessel containing a biomass having methanogenic bacteria adapted to transform the volatile organic solvents into a methane-rich and combustible gas and a separate liquid stream output substantially free of the volatile organic solvents; recovering the methane- rich and combustible gas by collecting the gas from the anaerobic bioreactor.

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