中文摘要：

考虑到经氯消毒的城市污水处理厂尾水中可能存在的副产物，选择广东省东莞市两个典型污水处理厂尾水为研究对象，采用GC-MS分析其中的有机氯化物，并以某种粉末活性炭进行吸附深度处理及考察其效果．分析结果表明，尾水中存在二氯甲烷、三氯甲烷、四氯化碳、二氯一溴甲烷、二溴一氯甲烷、二氯硝基甲烷等多种有机氯化物，其中，三氯甲烷和四氯化碳在所取样品中都存在且相对含量之和超过80％；吸附结果表明，所选择的活性炭样在1g·L^-1投加量下，尾水中未检出有机氯化物．说明适宜的活性炭能够应用于污水处理厂尾水中多种有机氯化物的分离去除．

英文摘要：

The effluents from two typical wastewater treatment plants in Dongguan City in Guangdong Province were studied to measure the byproducts produced in chlorination of municipal wastewater. Chlorinated Organic Compounds （COCs） in the effluents were analyzed by GC-MS before and after adsorption onto selected Powdered Activated Carbon （PAC）. The analysis showed that the raw effluents contain various COCs, such as dichloromethane, chloroform, carbon tetrachloride, hromodichloromethane, dibromochloromethane and nitrodichloromethane, and the total content of chloroform and carbon tetrachloride found in all samples exceeds 80% of the COCs. The PAC adsorption results indicate that COCs are not detected in the effluent after adsorption by 1 g· L ^-1 of PAC. Therefore, suitable PAC adsorbents can be used to remove COCs in the effluents from the wastewater treatment plants.