The coupling between hydrodynamic and purification efficiencies of ecological porous spur-dike in field drainage ditch

作     者：Lei Rao Pei-fang Wang Qing-song Dai Chao Wang 饶磊;王沛芳;戴青松;王超

作者机构：College of Mechanics and Materials Hohai University Nanjing 211100 China Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education Hohai University Nanjing 210098 China College of Environment Hohai University Nanjing 210098 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2018年第30卷第3期

页      面：373-383页

核心收录：

学科分类：081504[工学-水利水电工程] 08[工学] 0815[工学-水利工程] 

基　　金：Project supported by the National Science Funds for Creative Research Groups of China(Grant No.51421006) the National Major Projects of Water Pollution Control and Management Technology(No.2017ZX07204003) the National Key Plan for Research and Development of China(Grant 2016YFC0502203) the Key Program of National Natural Science Foundation of China(Grant No.91647206) the Qing Lan Project of Jiangsu Province 

主　　题：Porous water permeable material ecological spur-dike field drainage ditch pollutant removal rate coupling 

摘      要：In this study, a series of ecological porous spur-dikes are arranged in an experiment channel to simulate a real field drainage ditch. The inside and outside flow fields of spur-dikes are determined by numerical simulations and experimental methods. An Ammonia-Nitrogen（NH3-N） degradation evaluation model is built to calculate the pollution removal rate by coupling with the inner flow field of the porous spur-dikes. The variations of the total pollutant removal rate in the channel are discussed in terms of different porosities and gap distances between spur-dikes and inlet flow velocities. It is indicated that a reasonable parameter matching of the porosity and the gap distance with the flow velocity of the ditch can bring about a satisfactory purification efficiency with a small delivery quantity of ecological porous materials.