驯化活性污泥降解邻苯二甲酸酯类化合物的研究  

Biodegradation of Phthalic Acid Esters by Acclimated Activated Sludge

作　　者：王建龙[1] 吴立波[1] 施汉昌[1] 钱易[1] 

机构地区：[1]清华大学环境工程系环境模拟与污染控制国家重点实验室

出　　处：《环境科学》1998年第1期18-20,共3页Environmental Science

基　　金：中国博士后科学基金;国家自然科学基金

摘　　要：研究利用驯化活性污泥生物降解３种邻苯二甲酸酯（ＰＡＥｓ），即邻苯二甲酸二甲酯（ＤＭＰ）、二丁酯（ＤＢＰ）和二辛酯（ＤＯＰ）．结果表明：侧链较短的ＤＭＰ和ＤＢＰ能被较快地降解，分别在３ｄ和８ｄ内被降解９０％．但ＤＯＰ的降解速率较慢．３种ＰＡＥｓ的生物降解过程均可用一级反应动力学模型描述，且实验测得的一级反应速率常数（Ｋ１）能与相应酯类的二级水解常数（ＫＯＨ）较好地关联．The microbial degradation of three phthalates,priority pollutants listed by both China National Environmental Monitoring Centre and U.S.EPA,i.e.dimethyl(DMP),dinbutyl(DBP) and dinoctyl(DOP) phthalate by acclimated activated sludge was investigated.The experimental results demonstrated that DMP and DBP with the shorter alkyl side chain PAEs can be rapidly degraded—nearly 90% within 3 days for DMP and 8 days for DBP.However,the degradation rate of DOP was very slow.The degradation of PAEs can be described by the firstorder reaction model.The firstorder rate constants(K1) of three PAEs determined in this study can correlate with the corresponding secondorder hydrolysis rate constants (KOH).

关 键 词：邻苯二甲酸酯 活性污泥 污染物 环境监测 

分 类 号：X830.2[环境科学与工程—环境工程]