パルプ漂白排水の酸化酵素と凝集剤による処理

概要

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Treatment of pulp bleaching spent liquor with peroxidase, laccase, tyrosinase, and three coagulants, chitosan, hexamethylenediamine-epichlorohydrin polycondensate (HE), aluminum sulfate (Alum), was conducted. Chlorophenols in bleaching spent liquor were effectively dephenolized with enzymes, but it was hard to reduce AOX and TOC. AOX and TOC were removed by adding the coagulants, but chlorophenols essentially remained in bleaching spent liquor. Treatment by an enzyme and a coagulant quite effectively removed not only chlorophenols but also AOX and TOC from bleaching spent liquor. Distribution of AOX and TOC on the relative molecular mass fraction of the breaching spent liquor was investigated. Most AOX constituted the mass fraction under 3000 of the chlorine breaching effluent.
社団法人　日本水環境学会の論文
2000-04-10