Qualitative Analysis of Organic Pollutants in Key Receiving Waterbody of Effluents from Printing and Dyeing Industries in Liaohe River Basin

The key receiving waterbody of effluents discharged from printing and dyeing industries in the Liaohe River Basin was identified based upon the national statistic data of the industrial pollution census. The SPE-GC-MS technique was used to qualitatively determine organic pollutants in effluents from a local integrated wastewater treatment plant (WWTP) within the textile industrial park and also from different sampling sites along the freshwater. The results show that the Haicheng River is a key receiving waterbody for the effluents discharged from printing and dyeing industries. There are 48 organic pollutants in the effluent, which mainly include types of N-heterocycles, aliphatic amines, substituted benzenes and alchohols. The diversity of organic pollutants is also observed in each selected section of the Haicheng River, and in the site of downstream, the majority of pollutants is composed of N-heterocycles and substituted benzenes. There are 9 well-known toxic pollutants, i.e. dimethyl phthalate(DMP), dibutyl phthalate(DBP), di-n-octyl phthalate, p-xylene, aniline, p-dichlorobenzene, 4-methyl nitrobenzene, dinitrotoluene and naphthaline that are in both US EPA and Chinese priority pollutant list.