活性スラッジによる産業廃水の処理に関する研究 : (第11報)酵母廃水の処理について

概要

論文の詳細を見る
The activated sludge treatment of the wastes discharged with yeast production from molasses and soy whey were investigated.BOD of the used yeast wastes was 16,300 ppm of molasses and 24,000 ppm of soy whey.From the batch wise tests using the shaking method at a sludge concentration of 5% (volume of 1,600 G 10 min) and with a temperature of 25℃, it was found that the maximum BOD loadings of the wastes were 2.6Kg for molasses and 4.3Kg/m^3/day for soy whey. Under these conditions, more than 90% BOD was removed.When the wastes were treated semi-continuously by the shaking method with BOD loadings of 1.3Kg for molasses and 2.0Kg/m^3/day for soy whey, 96 to 99% BOD was removed irrespective of concentration of the raw wastes.Secondly, when the wastes were treated continuously with the various loading by the continuous treatment apparatus it was found that the limits of BOD loadings treated in with safety were 3Kg for molasses and 4Kg/m^3/day for soy whey.The settling vate of the sludges, was high. The sludge volume indexes were 40 in the semi-continuous and from 50 to 70 in the continuous treatment tests.The amounts of the sludge produced during the purification processes were 32% in molasses and 40% in soy whey of the total BOD treated.
社団法人日本生物工学会の論文
1967-03-25