Treatment of Waste-water Discharged from a sake Brewery Using Yeast

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Treatment of waste-water discharged from a sake brewery using yeast, collected from wood sap or wood chips, was examined in combination with the activated sludge process with a fixed bed. Three strains belonging to Hansenula anomala and Pichia acaciae were tested for continuous treatment of model waste-water. Since in model waste-water containing 1,500 to 3,500 ppm of COD, the COD values were reduced to 100 to 150 ppm, combination with another process is required to reduce the COD value below 50 ppm. For reduction of the COD value of model waste-water containing 2,500 to 4,000 ppm of COD to 40 to 50 ppm, it was treated by continuous cultivation of the strain of H. anomala, then the effluent was treated in an activated sludge tank witha fixed bed. This process was applied for the practical treatement of waste-water from a sake brewery. It was prossible to keep the final effluent from the sedimuntation tank in the process at 30 to 50 ppm of COD during the sake manufacturing. Evacuation of waste sludge from the treatment plant was only once of about 5 m^3 each 2 or 3 months when 1,100 to 1,600 m^3 of waste-water in total was treated.
公益社団法人日本生物工学会の論文
1978-08-25