化工园区水环境中优控化学品的污染特征及风险评估

为了更好地掌握化工园区生产运行过程中排放的主要污染物在环境水体中的实际质量浓度，客观评价化学品在环境中的分布及对环境和生物体造成的影响，文章综合了水环境相关的污染物毒性数据和化工园区背景资料, 确定了优先控制化学品清单，通过选取重庆长寿化工园区内及周边上下游8个采样点位进行监测分析，对该段长江水体中优先控制化学品进行风险评价.评价结果表明:化工园区内污水处理厂中的三氯甲烷、Zn、四氯化碳等污染物具有较高的生态风险，而周边长江江段水样中也发现Cr和Zn具有生态风险，研究结果可为下一步对园区污染物制定日常管理和风险防控提供研究基础和科学支撑.

Characteristics and Risk Assessment of Priority-Controlled Chemicals in Water Environment of Chemical Industrial Parks

A list of priority-controlled chemicals was made according to the relevant toxicity data of pollutants in water environment and the basic information of the Changshou chemical industrial park, which is in Chongqing city and adjacent to the Yangtze River, in order to fully understand the concentration and distribution of the key pollutants in the surrounding water discharged by the running industrial park and to evaluate the effect of these pollutants on the environment and organisms. Eight sampling sites inside and outside the industrial park and in the surrounding river basin were selected for monitoring. The results showed that pollutants such as trichloromethane, zinc and carbon tetrachloride in the sewage treatment plant in the park have high ecological risks and that chromium and zinc found in the water samples of the surrounding Yangtze river also have high ecological risks. The research result can be the basis for proper management and risk prevention and control of chemical pollution in the industrial park.