馬鈴薯デンプン製造廃水処理に関する研究 : (第2報) 廃水の貯溜試験

概要

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An anaerobic lagoon test of potato starch separator waste at low temperature (10℃) was made on a laboratory scale for eventual industrial application. The change of wastes component during storing term was studied.Upper layer waste showed a different velocity of digestion from the middle and lower layers in these results. The pH of stored waste dropped to about 4.5 in 5 days and rose after this period. About 50% of COD was removed in 3 or 4 days, but COD removal decreased after this period. A small quantity of nitrogen compounds was removed by settling and the heat coagulated and total nitrogen changed slightly during the storing period. Organic acids in sludge and storing waste were found to be mainly lactic, acetic, propionic and butyric acids, and increased during the storing period. Citric acid was found only in potato juice.According to the results of this test, it was considered that treatment of potato starch waste in an anaerobic lagoon at low temperature was in need of a long storing period.
公益社団法人日本生物工学会の論文
1967-07-25