College of Hydrology and Water Resources, Hohai University, Nanjing 210098, Jiangsu, China.
Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, Jiangsu, China.
Int J Environ Res Public Health. 2019 Oct 8;16(19):3774. doi: 10.3390/ijerph16193774.
The water quality target management of the control unit is a convenient and direct technology for water environment management and the development direction of water environment management in China, involving control unit division and water environment capacity calculation. Taking the Taihu Lake Basin in Jiangsu Province as an example, we propose herein the basic principle of the division of a regional control unit in a plain river network and the method of analyzing the rationality of the control unit division. On this basis, the Taihu Lake Basin in Jiangsu Province was divided into 70 control units. To calculate the water environmental capacity in the plain river network area, we established a water environmental capacity calculation framework based on multiple targets of lakes and rivers, and proposed the goal of water quality "double compliance" of the water environmental functional zone and the assessment section. For this study, we calculated the regional water environmental capacity using the mathematical model of the Taihu Lake Basin's water environmental capacity, and the water environmental capacities of the 70 control units were allocated by the weight coefficient method, which established water area and functional division length. The research results described herein were applied to the pollution permit management of the Taihu Lake Basin in Jiangsu Province. It provides important technical support for the establishment of a pollution permit system based on the total capacity to improve environmental quality.
控制单元的水质目标管理是一种方便、直接的水环境管理技术，也是中国水环境管理的发展方向，涉及控制单元的划分和水环境容量的计算。以江苏省太湖流域为例，提出了平原河网地区区域控制单元划分的基本原则和控制单元划分合理性的分析方法。在此基础上，将江苏省太湖流域划分为 70 个控制单元。为了计算平原河网地区的水环境容量，建立了基于湖泊和河流多目标的水环境容量计算框架，并提出了水环境保护功能区和评价断面水质“双达标”的目标。针对本研究，采用太湖流域水环境容量数学模型计算了区域水环境容量，并采用权重系数法分配 70 个控制单元的水环境容量，建立了水域和功能分区长度。本研究结果应用于江苏省太湖流域排污许可证管理，为建立基于总量的排污许可证制度以改善环境质量提供了重要的技术支持。
