摘要
采用色谱分析法和荧光分光光度法测定了我国3个典型沿海城市广州、上海和大连共13个污水处理厂污泥样品中有机氯农药(OCPs)、多环芳烃(PAHs)、多氯联苯(PCBs)和石油类4种有机污染物的含量。各区域各类型污水处理厂城市污泥有机污染物含量结果表明,来源于工业污水为主的城市污泥中除OCPs外均较生活污水为主的污泥高,上海污水处理厂城市污泥中4种有机污染物含量均值除石油类外均高于广州和大连。与相关标准对比发现,石油类是我国城市污泥的特征污染物,除石油类外8%的样品超过《海洋沉积物质量》(GB 18668-2002)中第三类沉积物标准限值。根据我国《疏浚物海洋倾倒分类标准和评价程序》,所有采集样品均不符合海洋倾倒的条件。对比《城镇污水处理厂污泥处置农用泥质》(CJ/T309-2009)和《城镇污水处理厂污染物排放标准》(GB 18918-2002)发现,92%的污泥中PAHs和PCBs的含量符合我国污泥农用标准中的限值,但仅1个样品中石油类含量符合污泥农用标准。研究结果表明,我国城市污泥不宜采用海洋倾倒方式进行处置,但如能有效降解或去除污泥中的石油类,我国城市污泥大部分仍可采用污泥农用的处置方式进行处置。
Thirteen sludge samples from cities of Guangzhou, Shanghai and Dalian were collected and contents of organochlorine pesticides （OCPs） ,poly-aromatic hydrocarbons （PAHs） ,polychlorinated biphenyls （PCBs） and petroleum hydrocarbons were determined by chromatography and fluorometric spectrophotometry method. The results indicated that industrial sludge was more seriously polluted than domestic sludge in terms of PAHs, PCBs and petroleum hydrocarbons. Contents of the four detected organic contaminants in sludge from Shanghai were higher than those from Guangzhou and Dalian except for oil. It was also indicated that oil is the typical organic pollutant in sludge samples and 8% sludge samples exceeded its standard for the third kind of marine sediment beside oil. Furthermore, none of the collected sludge samples satisfied the qualifications of dumping to the ocean. The results also indicated that 92% sludge samples were under the limited standards for fertilization of sludge in terms of PAHs and PCBs,while only one sample fit with the relative standard in terms of petroleum hydrocarbons. Based on the above results, it was shown that most of the sludge could be disposed by land application rather than dumping to the ocean if oil concentration in the sludge was decreased to less than the relative limit.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2013年第5期652-656,共5页
Marine Environmental Science
基金
国家自然科学基金(41006062)
国家海洋公益性行业科研专项(201105010)
关键词
污水处理厂
城市污泥
有机污染物
海洋倾倒
处置
wastewater treatment plants
sludge
organic contaminant
ocean dumping
disposal
作者简介
余忆玄（1988-），女，福建省三明市人，在读研究生，主要研究方向为海洋环境中污染物调查和环境行为，E-mail：yixuan．48@163．com
通讯作者：韩建波，E—mail：jbhan@nmemc．gov．cn
