模拟生物滞留池强化径流雨水中的氮磷去除研究  

Research on Simultaneous Removal of Nitrogen and Phosphorus in Runoff Rainwater by Bioretention

作　　者：许萍[1] 黄俊杰[1] 张建强 张雅君[1] XU Ping HUANG Junjie ZHANG Jianqiang ZHANG Yajun(Key Laboratory of Urban Stormwater System and Water Environment of Ministry of Education,Beijing University of Civil Engineering and Architecture, Beijing 100044, China Zhengzhou Municipal Engineering Design ＆ Research Institute, Zhengzhou 450046, China)

机构地区：[1]北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室,北京100044 [2]郑州市市政工程勘测设计研究院,河南郑州450046

出　　处：《环境科学与技术》2017年第2期107-112,共6页Environmental Science & Technology

基　　金：国家重大水专项(2010ZX07320-003-005;2010ZX07320-002);北京建筑大学基金项目(00331615008);城市雨水系统与水环境省部共建教育部重点实验室项目(PXM2014014210000057)

摘　　要：为改善生物滞留池对径流雨水中氮和磷的去除效果,考察了不同组合填料和淹没区深度分别对总磷和硝酸氮的影响,找出最优工况,采用小试实验研究优化后的模拟生物滞留池对径流雨水中氮磷的去除效果。结果显示,最优工况是选择麦饭石组合填料,设置淹没区深度为35 cm。经优化后的模拟生物滞留装置在7场模拟降雨实验中,对COD、NH_4^+-N、NO_3^--N、TN和TP去除率分别为:68.65%~82.86%、73.47%~91.69%、29.35%~74.56%、58.66%~74.88%和78.37%~93.90%。该装置对模拟径流中的污染物去除稳定,适合应用于道路滞留带。In order to improve the removal efficiency of nitrogen and phosphorus in the runoff rainwater by the bioretention,the effects of different combined packings and saturated depths on the removal rate of total phosphorus and nitrate were studied.Then the optimal operating conditions were found.Finally,the removal effect of nitrogen and phosphorus by bioretention in bench scale experiment was operated.The results showed that,the optimal condition is choosing the medical stone combined packing and setting saturated zone with depth 35 cm.The removal rates by the device after optimization during seven simulation experiments of COD,NH4^＋-N,NO3^--N,TN and TP were 68.65%-82.86%,73.47%-91.69%,29.35%-74.56%,58.66%-74.88% and 78.37%-93.90% respectively.The removal of pollutants from simulated runoff rainwater by the device is stable,and it is suitable for road residence zone.

关 键 词：生物滞留 氮 磷 组合填料 淹没区深度 

分 类 号：X522[环境科学与工程—环境工程]