Research on the water quality evaluation and nutrients removal efficiency of ecological ditch

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Duan, Zhengda^1 ; Zhang, Huayong^1 ; Wang, Hualin^1 ; Zhong, Meifang^1 ; Wang, Zhongyu^1 ; Huang, Hai^1

Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing

102206, China^1

关键词: Comprehensive index method;    Construction lengths;    Nitrate nitrogen;    Nutrients removal;    Pollutant removal;    Removal efficiencies;    Total nitrogen removal;    Water quality evaluation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/5/052022/pdf
DOI  :  10.1088/1755-1315/227/5/052022

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Ecological ditches have a good effect on improving polluted runoff, and their removal efficiency and construction length play a decisive role in the implementation of ditches. Based on the field monitored data of Wulihu River, the water quality was evaluated by the comprehensive index method. Then, the removal efficiency of nutrients in the ecological ditch was studied, and the optimum lengths of ecological ditch for main pollutant removal were obtained. The results showed that the water quality gradually became better along the Wulihu River and the removal efficiency of chemical oxygen demand was the largest (60.52%). The optimum ecological ditch length for total nitrogen removal was 6.05 km and that of nitrate nitrogen, nitrite nitrogen, chemical oxygen demand were 29.45 km, 5.61 km and 6.92 km, respectively.