PROCESS FOR TREATING DISTILLATION WASTE LIQUOR OF DISTILLED SPIRIT INCLUDING SPIRIT DISTILLED FROM SWEET POTATOES TO BE DISCHARGED IN LARGE AMOUNT IN SHORT PERIOD OF TIME

摘要

PROBLEM TO BE SOLVED: To completely dry a distillation waste liquor of shochu (distilled sprits) in a short period of time to remove offensive smell pollution due to the rotten solids content having a high water content and to effectively utilize the filtrate as the digested gas to form treated water without causing pollution. SOLUTION: A distillation waste liquor 1 of shochu is subjected to solid-liquid separation and the separated solids content or the solids content formed after concentration of a condensate which would be rotten in a day and would have to be incinerated or the like is formed into a dried substance having a water content of 12-13% with the use of a vacuum dryer 7 in 4-5 hours in total which is then recycled to feeding stuff, fertilizers, solid fuels or the like, while the filtrate is digested with the use of a large volume anaerobic vessel 26 and a methane fermentation vessel 27 equipped with a gas holder of a small size to recycle the gas as a fuel and the treated water within a regulated value is charged.