Scenario analysis of water pollution control in the typical peri-urban river using a coupled hydrodynamic-water quality model |
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Authors: | Haifeng Jia Shuo Wang Mingjie Wei and Yansong Zhang |
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Institution: | (1) College of Environmental Sciences, Peking University, Beijing, 100871, China;(2) Environmental Resource and Forest Engineering, State University of New York College of Environmental Science and Forestry Syracuse, NY 13210, USA;(3) Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; |
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Abstract: | The water quality pollution and ecological deterioration in peri-urban rivers are usually serious under rapid urbanization
and economic growth. In the study, a typical peri-urban river, Nansha River, was selected as a case study to discuss the scheme
of peri-urban river rehabilitation. Located in the north part of the Beijing central region, the Nansha River watershed has
been designated as an ecologically friendly garden-style area with high-tech industry parks and upscale residential zones.
However, the Nansha River is currently seriously contaminated by urban and rural pollutants from both nonpoint sources (NPS)
and point sources (PS). In this study, the pollutant loads from point sources and nonpoint sources in the Nansha River watershed
were first assessed. A coupled model, derived from the Environmental Fluid Dynamics Code and Water Quality Analysis Simulation
Program, was developed to simulate the hydrodynamics and water quality in the Nansha River. According to the characteristics
of the typical peri-urban river, three different PS and NPS control scenarios were designed and examined by modeling analyses.
Based on the results of the scenario analysis, a river rehabilitation scheme was recommended for implementation. |
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