活性スラッジによる産業廃水の処理に関する研究 : (第2報)ビート糖廃水の処理について

概要

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The activated sludge treatment of flume and steffen wastes discharged from a beet sugar factory were investigated. The mother liquor remaining after the culture of yeast was used as Steffen waste. BOD value of the flume waste used was 220 ppm, and that of the Steffen waste was 6,160 ppm. The wastes were treated with a K_d value of 5.8×10^<-7>, a sludge concentration of 4 to 5% and temperature of 25℃.It was found that the BOD loadings of the wastes were respectively 2.4kg in the flume waste, 3.7kg in the Steffen waste and 3.8 kg per cubic meter per day in the mixed waste (1 : 1). Within the limits of the loadings, more than 90% of the BOD of the flume waste was removed and that of the Steffen and the mixed wastes were reduced 80 to 85% form the original wastes.The predilution of the Steffen waste had no influence upon the percentage of BOD reduction. However as far as for the appearance of the final effluent is concerned, it is desirable to treat the waste after diluting it with water or the flume waste more than 5 times.
社団法人日本生物工学会の論文
1964-07-15