우리나라 하수 및 폐수처리 슬러지의 주요 휘발성 유기화합물의 함량

Abstract

Volatile organic compounds (VOCs) contents in the sewage sludge derived from the residential and industrial areas were determined in order to characterize contemporary organic contamination levels as a part of the ongoing development of the environmentally sound sewage sludge management strategy in Korea. VOCs were extracted from the dewatered sludge cake using a Headspace/GC/MS operated in selected ion monitoring mode. The optimum temperature and time for equilibration procedure between sewage sludge and headspace were deterimned empirically. Dichloromethane, 1,3-dichloropropene, tolune, ethylbenzene, and xylene were present in the domestic sewage sludges, whereas, dichloromethane, 1,2-chloroethene, chloroform, 1,1,1-trichloroethane, 1,3-dichloropropene, benzene, toluene, ethylbenzene, and xylene in the sludge from wastewater treatment plant were present in appreciable amount. VOCs contents in Korean sludges were also compared with those in other countries.