台湾城市污水污泥中的有害有机物。

Hazardous organic matters in municipal sewage sludge in Taiwan.

作者信息

Cheng H F, Chen S Y, Lin J G

机构信息

Institute of Environmental Engineering, Chiao Tung University, Hsinchu, Taiwan.

出版信息

Water Sci Technol. 2001;44(10):65-70.

PMID:11794683

Abstract

Application of municipal sewage sludge to agricultural land has attracted significant attention in recent years because it conserves abundant nutrients and hydrocarbons that can be used as a soil amendment. The presence of hazardous organic matters (HOMs) in sewage sludge limits the feasibility of reuse of sewage sludge. The purpose of this study was to investigate the types and the concentrations of HOMs in municipal sewage sludge in Taiwan. An efficient SFE/GC/MS method was used to determine HOMs in sludge samples. The results indicated that di-(2-ethylhexyl) phthalate (DEHP) was persistently found in both aerobically and anaerobically digested sludges. 4-nonylphenol (4-NP) was only found in anaerobically digested sludges. Both DEHP and 4-NP have been characterized as endocrine disrupting chemicals (EDCs) or environmental endorine disruptors (EEDs). It suggested that sludges containing high levels of DEHP and 4-NP need further treatment and reduction of possible impacts on the environment before their reuse as soil fertilizers.

摘要

近年来，将城市污水污泥应用于农业土地备受关注，因为它含有丰富的可作为土壤改良剂的养分和碳氢化合物。污水污泥中有害有机物（HOMs）的存在限制了污水污泥再利用的可行性。本研究的目的是调查台湾城市污水污泥中HOMs的种类和浓度。采用高效的超临界流体萃取/气相色谱/质谱联用（SFE/GC/MS）方法测定污泥样品中的HOMs。结果表明，邻苯二甲酸二（2-乙基己基）酯（DEHP）在好氧和厌氧消化污泥中均持续存在。4-壬基酚（4-NP）仅在厌氧消化污泥中发现。DEHP和4-NP均被归类为内分泌干扰物（EDCs）或环境内分泌干扰物（EEDs）。这表明，含有高浓度DEHP和4-NP的污泥在作为土壤肥料再利用之前，需要进一步处理并降低对环境可能产生的影响。