State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, 200237 Shanghai, China.
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, 200237 Shanghai, China; Shanghai Institute of Pollution Control and Ecological Security, 200092 Shanghai, China.
Sci Total Environ. 2020 Jun 20;722:137946. doi: 10.1016/j.scitotenv.2020.137946. Epub 2020 Mar 14.
A comprehensive characterisation of four phenolic compounds in surface water and various emission sources was conducted simultaneously in a typical industrial city upstream of the Taihu Lake watershed. The overall concentrations of the target compounds ranged from 0.15 to 2.75 μg/L in the surface water and from 0.43 to 377 μg/L in the emission sources. Relatively high concentration levels were observed in August, during which the rainy season typically occurred in the study area, indicating seasonal emission sources. The spatial distribution revealed severe phenolic-compound contamination in the northeast part of the study area. According to the relationships between the surface water and emission sources, combined-sewer overflow and surface runoff from agricultural activities were identified as seasonal emission sources that were responsible for the increased concentration levels in wet seasons. Indirect discharge of industrial wastewater was proposed as a persistent emission source responsible for the severe contamination level in the northeast region over the entire sampling period, accounting for 16.5% of the phenolic-compound load in a demonstration river section. The findings of this study are useful for identifying the sources of phenolic compounds and controlling the contamination from the main sources in a typical industrial city.
对太湖流域上游典型工业城市的地表水中和各种排放源中的四种酚类化合物进行了综合特征描述。目标化合物在地表水中的总浓度范围为 0.15 至 2.75μg/L，在排放源中的浓度范围为 0.43 至 377μg/L。在 8 月份观察到相对较高的浓度水平，该月份通常是研究区域的雨季，表明存在季节性排放源。空间分布显示研究区域的东北部存在严重的酚类化合物污染。根据地表水和排放源之间的关系，合流制污水溢流和农业活动的地表径流被确定为季节性排放源，这导致了雨季浓度水平的增加。工业废水的间接排放被认为是持久性排放源，导致整个采样期间东北部地区的严重污染水平，占示范河流段中酚类化合物负荷的 16.5%。本研究的结果有助于识别酚类化合物的来源，并控制典型工业城市的主要来源的污染。
