活性汚泥微生物の生物吸着, COD除去および酸素吸収速度に及ぼす有害化学物質の影響

概要

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The effects of ten hazardous chemicals on biosorption behavior, COD removal rate (CODR) and oxygen uptake rate (OUR) of activated sludge microorganisms were studied.The IC50 values, 50% inhibition of the OUR, determined to be 2.3mg·l-1, 4.5mg·l-1, 7.3mg·l-1, 9.8mg·l-1, >2,500mg·l-1, >12,500mg·l-1, 950mg·l-1, 2,800mg·l-1, 9,500mg·l-1 and 460mg·l-1, respectively, for HgCl2, CUCl2, (CH3COO)2Hg, (CH3COO)2Cu, phenol, paraquat (PQ), gramoxone 100® (24% PQ), tri-n-butyltin chloride (TBTC), tri-n-butyltin oxide (TBTO) and SnCl2.As the IC50 value of Hg (II) and Cu (II) low, CODR low while biosorption behavior high. Conversely, when the IC50 value of phenol, PQ, gramoxone 100®, TBTC, TBTO and SnCl2 high, CODR high and biosorption behavior low.It has been shown that these findings are related to the IC50 values or CODR and biosorption behavior on activated sludge microorganisms of the ten hazardous chemicals tested.
社団法人　日本水環境学会の論文
1996-06-10