Abstract:The study of pollution loading and water environmental capacity is one of the key issues in water environment, water resources management and allocation in watershed. A comprehensive analysis of water pollution loading and environment capacity was conducted in this paper by taking a case study of Taiping Lake Basin, Anhui Province, China. Based on monitoring and statistic data as well as discharge coefficient method, different sources of water pollution were analyzed. Three models, including simplified one-dimension model, Vollen welder model and Dillion model, were used to estimate water environmental capacity of Taiping Lake and other major rivers. Results indicated that 3863.75tons of COD, 410.24tons of NH3-N and 51.63tons of TP was discharged into Taiping Lake in 2011. Water pollution was mainly contributed by urban and rural domestic sewage, accounting for about 60%. Machuan River and Puxi River were more seriously polluted than other rivers in Taiping Lake Basin. The spatial analysis of pollutant discharge suggested that developed regions had relatively higher pollution loading. While Taiping Lake still has large pollutant carrying capacity according to the current water quality management target, the discharge of NH3-N and TP in Puxi River, Yangxi River and Shuxi River were nearly reach the limit. Therefore, the total quantity control of pollutants should be taken in the future.
李响, 陆君, 钱敏蕾, 王祥荣, 樊正球, 王寿兵. 流域污染负荷解析与环境容量研究[J]. 中国环境科学, 2014, 34(8): 2063-2070.
LI Xiang, LU Jun, QIAN Min-Lei, WANG Xiang-Rong, FAN Zheng-Qiu, WANG Shou-Bing. Study on pollution loading and water environmental capacity in watershed—A case study of Taiping Lake Basin, Anhui Province, China. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(8): 2063-2070.