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五氯酚在污染沉积物泥浆固液两相中厌氧生物降解

唐全1;徐向阳1;朱有为2   

  1. 1浙江大学环境工程系,杭州 310029;2浙江省农业厅农业环保站,杭州 310004

  • 收稿日期:2004-05-02 修回日期:2005-01-17 出版日期:2005-04-18

Anaerobic biodegradation of pentachlorophenol (PCP) in solid-liquid phase of contaminated sediment slurry

TANG Quan1,XU Xiangyang1,ZHU Youwei2   

  1. 1Department of Environmental Engineering,Zhejiang University,Hangzhou 310029,China;2Station of Agro-Environmental Management of Zhejiang Province,Hangzhou 310004,China

  • Received:2004-05-02 Revised:2005-01-17 Online:2005-04-18

摘要: 研究了污染沉积物泥浆液、固两相五氯酚(PCP)厌氧生物降解.结果表明,投加10 g·kg-1厌氧颗粒污泥,经31 d处理泥浆液、固两相PCP降解率达98.9%,平均降解速率达到8.0 mg·kg-1·d-1,对照处理平均降解速率仅为4.4 mg·kg-1·d-1,颗粒污泥生物强化作用明显.作为泥浆修复过程的调控因子,有机溶剂、共基质和表面活性剂对PCP降解效应不同,投加乙醇,可提高PCP解吸和降解速率,4 d内两相PCP降解速率达到54.3 mg·kg-1·d-1;而投加共基质和非离子表面活性剂乙二醇-丁醚后,液、固两相PCP降解均出现迟滞,两者均不同程度地抑制PCP降解.

关键词: 角突臂尾轮虫, 品系, 胚胎发育, 生殖前期, 个体大小, 卵大小

Abstract: The study showed that after inoculating 10 g·kg-1 anaerobic dechlorinated granular sludge (ADGS) for 31 days,the biodegradation rate of pentachlorophenol (PCP) in solid-liquid phase of contaminated sediment slurry was up to 98.9%,with an average of 8.0 mg·kg-1·d-1,while that of the control was only 4.4 mg·kg-1·d-1.As the regulation factors in slurry remediation,organic solvent,co-substrate and surfactant had different effects on PCP degradation.The addition of ethanol could enhance the desorption and degradation of PCP,the degradation rate being up to 54.3 mg·kg-1·d-1 within 4 days,while the addition of co-substrate and nonionic surfactant EGME (ethylene glycol monobutyl-ether) inhibited the PCP degradation in solid- liquid phase of slurry.

Key words: Brachionus angularis, Strain, Developmental period (De), Pre-reproductive period (Dp), Body size, Egg size