Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
Jiangsu Provincial Academy of Environmental Sciences, Nanjing 210036, China.
Int J Environ Res Public Health. 2019 Feb 1;16(3):428. doi: 10.3390/ijerph16030428.
A mathematical model for simulating hydrodynamics and pollutants migration in a tidal river network was constructed, which takes the temporal and spatial distribution of rainfall runoff and non-point pollutants into consideration. Under the design hydrologic conditions of a typical hydrological year, the daily concentration change process for the control section is obtained. Aiming at the uncertainty of hydrology and water quality parameters such as flow direction, flow rate and concentration change in tidal river network area, a statistical analysis method is used to obtain the maximum allowable concentration of pollutants in the control section under the condition of the water quality standard assurance rate of. Then, a formula for calculating the pollutions emission intensity of point and non-point sources is derived. The method was applied to the pollution source control in a typical region like Taihu in China.
构建了一个潮汐河网水动力及污染物迁移的数值模型，该模型考虑了降雨径流和非点源污染物的时空分布。在典型水文年的设计水文条件下，得到了控制断面的日浓度变化过程。针对潮汐河网区域水流方向、流量和浓度变化等水文学和水质参数的不确定性，采用统计分析方法，得到在保证水质标准达标率为 95%的条件下，控制断面的污染物最大允许浓度，进而推求点源和面源污染物排放强度的计算公式。并将该方法应用于中国太湖流域等典型区域的污染源控制。
