活性スラッジによる産業廃水の処理に関する研究 : (第5報)ぶどう糖廃水の処理について

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From 50 to 100m^3 of water are usually consumed in the enzymatic glucose manufacturing process necessary to produce one ton of final product. The main wastes from the process are the washing wastes of the raw starch and of the filter cloth used in the decolorization process of the converted liquor by the activated carbon, and the reactivation wastes (acidic and alkaline) of the ion exchange resins. The other wastes are the cooling water of the concentrator and the washibng wastes from the floor and the equipment. The activated sludge treatment for the total wastes was investigated.The used wastes had a pH of 8.0,suspended solids of 920 ppm and BOD of 700 ppm. The treatment test was done by the shaking method under the following conditions, i, e., a Kd value of 5.8×10^<-7>, sludge concentration of 5.0% and temperature of 25℃.On the batch wise test with 467 ppm of the initial BOD, from the relationship between the aeration time and the percentage of BOD reduction, it was found that the maximum BOD loading of the total wastes was 3.7kg per cubic meter per day.The waste were continuosly treated with the BOD loading of 2.1kg per cubic meter per day for five days. THe final effluent was colorless and transparent, and 99.7% of suspended solid and 96.4% of BOD were removed from the original wastes. The sedimentation rate of the sludge was high, and sludge volume index was about 50. The amont of the sludge produced during the purification process was about 0.07% in dryness of the total weight of the raw wastes used.
社団法人日本生物工学会の論文
1964-10-25

活性スラッジによる産業廃水の処理に関する研究 : (第5報)ぶどう糖廃水の処理について

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