White spirit production wastewater treatment process

Abstract

The invention provides a white spirit production wastewater treatment process. The white spirit production wastewater treatment process comprises the following steps: pretreating the wastewater and removing a vinasse and a large particle suspended solid in the wastewater; adding a flocculant into the wastewater to remove a tiny suspended solid and a colloidal solid in the wastewater, adding alkali at the same time to regulate the pH value of the wastewater to alkalescence; degrading an organic matter in the wastewater through an upflow anaerobic sludge blanket reactor, and killing pathogenic bacteria at the same time; treating the wastewater sequentially through a first-level anoxic tank, a first-level aerobic tank, a second-level anoxic tank and a second-level aerobic tank, to remove nitrogen and phosphorus and the organic matter in the wastewater; finally separating the liquid and the solid of the obtained wastewater in a secondary sedimentation tank, disinfecting the wastewater subjected to solid and liquid separation, discharging to a sewage treatment plant, concentrating settling sludge obtained after solid and liquid separation, and sequentially performing filter-pressing and land filling. After the wastewater is treated by the process provided by the invention, the various indexes of a final effluent are detected to be lower than the requirements in the discharge standard (GB27631-2011) of water pollutants for fermentation alcohol and distilled spirit industry.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a liquor brewing wastewater treatment process. Background technique [0002] my country's liquor culture is extensive and profound, and liquor products, as special commodities that meet people's material and spiritual needs at the same time, are closely related to the culture of the place of origin. Drinking is not only a kind of material enjoyment, but also an emotional carrier for people to express their feelings, enhance friendship, and expand communication. It is an indispensable adjustment in interpersonal relationships. According to statistics, in 2015, there were 1,563 liquor enterprises above designated size in the country, with a total national liquor output of 13.128 million kiloliters and a sales revenue of 555.886 billion yuan; the cumulative export volume of liquor products was 16,188.83 kiloliters, and the cumulative export volume was 449 million US dollars. But...

AI Technical Summary

Problems solved by technology

However, at this stage, there is still a lack of economically reasonable and technologically mature combined processes to treat this type of wastewater.