State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210046, People's Republic of China; Jiangsu Key Lab of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, People's Republic of China.
Jiangsu Key Lab of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, People's Republic of China.
Environ Pollut. 2020 Aug;263(Pt B):114493. doi: 10.1016/j.envpol.2020.114493. Epub 2020 Apr 2.
Owing to the production and use of chemicals in chemical industry parks (CIPs), these areas are considered to be highly polluted. However, the type of pollutants presents in the wastewater from CIPs and the risk posed to the environment due to the release of these pollutants remains unclear. In this study, suspect screening was combined with traceability analysis to determine the type of pollutants present in wastewaters at 9 chemical enterprises and wastewater treatment plants (WWTPs) in the CIPs. Additionally, the distribution of nine pollutants from the WWTPs' effluent stage and the risk they posed to the surrounding river was examined through target analysis. Upon conducting suspect analysis, the presence of 65 and 64 chemicals in the 9 chemical enterprises' wastewaters and WWTPs, respectively, was tentatively identified. Traceability analysis of the compounds screened in the effluent from the WWTPs determined that 41 substances were identified as characteristic pollutants of the chemical enterprises, indicating that the suspect screening strategy enabled relatively more efficient identification of the characteristic pollutants compared to traditional quantitative analysis. Targeting analysis combined with ecological risk assessment showed that metolachlor, carbendazim, atrazine, diuron, and chlorpyrifos posed relatively higher risks to aquatic organisms in the surrounding river. Therefore, the refined management of the wastewater treatment plant in the CIPs is necessary.
由于化工园区（CIP）中化学品的生产和使用，这些区域被认为是高度污染的。然而，CIP 中废水所含的污染物类型以及这些污染物释放对环境造成的风险尚不清楚。在这项研究中，采用可疑物筛查与溯源分析相结合的方法，确定了 9 家化工企业和 CIP 中废水处理厂（WWTP）废水中存在的污染物类型。此外，通过目标分析还考察了 WWTP 出水阶段 9 种污染物的分布及其对周围河流的风险。通过可疑物分析，初步确定了 9 家化工企业和 WWTP 废水中分别存在 65 种和 64 种化学物质。对 WWTP 出水筛选出的化合物进行溯源分析，确定了 41 种物质为化工企业的特征污染物，表明与传统的定量分析相比，可疑物筛查策略能够更有效地识别特征污染物。目标分析与生态风险评估相结合的结果表明，邻异丙甲草胺、多菌灵、莠去津、西玛津和毒死蜱对周围河流中的水生生物构成了相对较高的风险。因此，有必要对 CIP 中的废水处理厂进行精细化管理。
