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{'供試汚水として豚糞を使用してばっ気式ラグーン法による処理実験を行なった.実験区は,回分式と半回分式の2区にそれぞれ5日滞留と10日滞留の2区ずつを設け,計4区とした.そこでこれらの基質除去特性を調査する目的でBOD,': [0], 'COD,窒素の経時変化を測定した.その結果,次のような知見が得られた.1.': [1], '供試汚水の濃度から計算したBOD除去率は全実験区とも99%以上であった.特に回分式のBOD除去率は20分で92~94%であった.2.': [2], '回分式の窒素除去は初期の1時間と最終の23時間に最高値を認めた.一方,半回分式では汚水流入終了後まもなく脱窒が認められた.3.': [3], '全実験区の比較では,5日滞留の半回分式がもっともすぐれていた.このBOD,': [4], 'COD,窒素の供試汚水の濃度から計算した除去率はそれぞれ99.6,96.7,51.2%であった.以上のことから,ばっ気式ラグーン法の2つの方式はBOD,': [5], 'CODの除去に優れているが,20~40(mg/l)の硝酸態窒素の残存が認められることから,脱窒効率に関する実験を実施している.': [6]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2330730041', 'counts_by_year': [], 'updated_date': '2024-12-24T12:46:33.885032', 'created_date': '2016-06-24'}