NOVELTY - An alcohol wastewater is anaerobically fermented by transporting a processed alcohol wastewater to an anaerobic fermentation device for microbial anaerobic fermentation to generate marsh gas; depositing obtained liquid from fermentation to a vinasse deposition tank for separation; subjecting separated liquid to sediment anaerobic fermentation device and clear liquid anaerobic fermentation device separately formed; and discharging liquid from sediment anaerobic fermentation device while generating marsh gas respectively from the two separate fermentation device.    USE - Method of anaerobic fermentation of alcohol wastewater (claimed).    ADVANTAGE - The method improves yield of marsh gas.    DETAILED DESCRIPTION - An alcohol wastewater is anaerobically fermented by:    (A) transporting a processed alcohol wastewater to an anaerobic fermentation device for microbial anaerobic fermentation to generate marsh gas;    (B) depositing obtained liquid from fermentation to a vinasse deposition tank for separation;    (C) subjecting separated liquid to sediment anaerobic fermentation device for 16 days and clear liquid anaerobic fermentation device for 20 days separately formed at 50-60 (preferably 56-57)?oC;    (D) discharging liquid from sediment anaerobic fermentation device while generating marsh gas respectively from the two separate fermentation device;    (E) transporting liquid from clear liquid anaerobic fermentation device; and    (F) reflowing the clear liquid for recycling.    An INDEPENDENT CLAIM is included for a device for performing method of anaerobic fermentation of alcohol wastewater comprising:    (1) a sediment anaerobic fermenter;    (2) clear liquid anaerobic fermenter;    (3) feeding pipeline of alcohol wastewater;    (4) vertical vinasse deposition tank;    (5) sedimentation channel;    (6) sedimentation ejection;    (7) sedimentation feeding pump;    (8) clear liquid recombining tank;    (9) clear liquid ejection pump;    (10) clear liquid feeding pump;    (11) sedimentation recombination tank;    (12) liquid reclaiming pipeline;    (13) water power circular decanter; and    (14) a centrifugal machine.    DESCRIPTION OF DRAWING(S) - The drawing is a flow chart of a method of anaerobic fermentation of alcohol wastewater. Drawing includes non-English language text.