Anaerobic and Aerobic Bio-degradation Characteristics of Comminuted Kitchen Wastes.
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概要
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Effects of pollution load of suspended solids (SS) in gray water, e.g. SS derived from kitchen works, clothes washing, bathing, etc., on water quality in enclosed water body are not well known. Aim of this study is to investigate the characteristics of anaerobic and aerobic decomposition of comminuted kitchen wastes which are considered major part of SS in gray water. Fishes, vegetables, tea leaves and apples were comminuted, and degradation rates of SS and release rates of DOC, D-N, D-P from SS were measured. Boiled rice and rice bran were also used as SS of kitchen wastes. Decomposition process of these SS was expressed by first order kinetics considering nondegradable fraction of SS. Nondegradable fraction ratio of SS was 10-20% for cabbage, 50% for fishes under anaerobic condition. Nondegradable fraction ratio under aerobic condition were smaller than those under anaerobic condition. Degradation rate constants of SS under aerobic condition were slightly larger than those under anaerobic condition. Release of DOC, D-N, D-P with decomposition of SS under anaerobic condition was remarkable comparing to aerobic condition.
- 日本水処理生物学会の論文
日本水処理生物学会 | 論文
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