Author(s)

Gang Wang^1,2*, Denghua Yan^1,2, Tao Pan³, Xiaoyan He^1,2, Jun Qi³, Minglei Ren^1,2, Liping Zhao^1,2, Fan Wang^1,2, Zhongbo Zhang^1,2, Xiaoming Jiang^1,2, Xiaodi Fu^1,2

¹State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, China.
²Research Center on Flood and Drought Disaster Reduction of the Ministry of Water Resources, Beijing, China.
³Beijing Longtao Environmental Technology Co Ltd., Beijing, China.

Water quality target management in watershed is the fundamental choice of city rivers suffering both serious pollution and severe water shortage. In this study, we performed a case study regarding river pollution control plan based on water quality target management in the North Canal River catchment of Beijing section, in order to obtain effective water quality improvement programs. The ammonia nitrogen (NH₃-N) and chemical oxygen demand (COD) were taken as the main controlling pollutants. Water quality targets and basic water quality improvement scenarios were set up considering different intensities of population regulation scenarios and gradually strengthening emission control measures. The MIKE11 model was adopted to simulate the effects of a range of water quality improvement scenarios. Results indicated that the basic scenarios could dramatically improve the surface water environment. However, additional intensive and combined measure programs should be implemented to ensure that the water quality would basically meet the targets of corresponding water function zones. The results highlight the need to implement water conservation in water shortage urban river basin and show the importance of enhancing drainage communication and conducting ecological water replenishment in such kind basins. It is expected to provide a reference for the water environment management practice of other metropolis in the world facing both crisis of water resource shortage and water environment pollution.

Water Quality Target Management, Water Quality Improvement Programs, Mike11 Model

Wang, G. , Yan, D. , Pan, T. , He, X. , Qi, J. , Ren, M. , Zhao, L. , Wang, F. , Zhang, Z. , Jiang, X. and Fu, X. (2019) Study on Technical Schemes for Major Pollutants Emission Reduction in Beijing North Canal River Basin Based on Watershed Water Quality Target Management. Journal of Water Resource and Protection, 11, 1327-1350. doi: 10.4236/jwarp.2019.1111077.