三峡库区城市给水厂多环芳烃含量水平评价

PAHs Concentration Level Evaluation of Water Purification Plants in Three Gorges Area

运用GC/MS对三峡库区6座城市给水厂的原水、出厂水中的PAHs污染物进行了定量分析,并检出其含有苊、菲、蒽、芘、荧蒽、二氢苊等PAHs,其中荧蒽为SEPA(StateEnvironmentalProtectionAdministration)首批公布的水中优先监测污染物.测定结果表明:库区城市给水厂原水与出厂水均含有多种PAHs,但含量相对较低,常规给水工艺对PAHs去除效果并不显著.

With GC/MS Approach, PAHs in raw water and effluent of six water purification plants in Three Gorges Reservoir Area are analyzed quantificationally. Six species of PAHs such as acenaphthene, phenanthrene, anthracene, pyrene, fluoranthene and acenaphthylene are determined. Of which, fluoranthene is priority pollutant firstly listed by SEPA. The results show that there are several variety of PAHs in raw water and effluent in water purification plants of Three Gorges Reservoir Area, but on the whole, PAHs concentration level is low. The results also show that PAHs removal capacity of conventional water treatment techniques is poor.