人工下水の活性汚泥処理における無汚泥生成に関する研究

概要

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In this research, minimization of sludge production from activated sludge processes was studied by increasing the solid retention time (SRT) as long as possible. Two sets of activated sludge processes were prepared and maintined for this purpose. One was an usual activated process with 8 hours detention time. To another was added an anaerobic tank with 2 hour detention time, which was expected to reduce sludge production further. Both processes were fed an artificial wastewater of 200mg/l BOD, and operated for about 100 days without withdrawing any excess sludge. The experimental results showed that it was possible for both processes to be operated without excess sludge production. However, the quality of effluent was deteriorated, suggesting further researches on this subject.
福井工業大学の論文
2005-03-18