夏季不同降雨间隔对生物滞留池脱氮效果研究  

Study on the Effect of Different Rainfall Intervals in Summer on Nitrogen Removal in Bioretention Ponds

作　　者：郑杨 潘欣悦 谢泽 解雨薇 陈欣怡 何嘉懿 ZHENG Yang;PAN Xin-yue;XIE Ze;XIE Yu-wei;CHEN Xin-yi;HE Jia-yi(Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education,Hohai University,Nanjing 210098,China;Yangtze Institute for Conservation and Development,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]长江保护与绿色发展研究院,江苏南京210098 [3]河海大学环境学院,江苏南京210098

出　　处：《环境科技》2021年第2期7-11,共5页Environmental Science and Technology

基　　金：国家自然科学基金资助项目(51739002);江苏省水利科技项目(2016011).

摘　　要：生物滞留池作为海绵城市中广泛应用的一种低影响开发措施,可有效缓解城市化所带来的不良影响。试验针对不同降雨间隔条件,对比分析传统直排型、淹没区型和储水内柱型3种生物滞留装置除氮效果的差异。试验结果表明:随着降雨间隔时间的增加,氨氮(NH3-N)、硝态氮和总氮(TN)平均去除效率降低了9.6%~32.3%,降雨间隔时间增大不利于生物滞留装置脱氮;长降雨间隔情况下各装置总氮(TN)去除效率排序为:储水内柱型生物滞留装置>直排型生物滞留装置>淹没型生物滞留装置。综合不同降雨间隔情形,发现储水内柱型装置的去氮效果最优。研究结果可为不同地区生物滞留池及其他生物反应装置的合理设计提供科学依据。As a low-impact development measure widely used in sponge cities, bioretention ponds can effectively alleviate the adverse effects of urbanization. According to different rainfall interval conditions, the experiment compares and analyzes the difference in the nitrogen removal effect of the traditional direct-drainage type, submerged area type and water storage inner column type bioretention devices. The test results show that the average removal efficiency of ammonia nitrogen(NH_(3)-N), nitrate nitrogen and total nitrogen(TN) decreases by 9.6% to 32.3% as the rainfall interval increases, and the increase in the rainfall interval is not conducive to the denitrification of bioretention devices;in the case of long rainfall intervals, the total nitrogen(TN) removal efficiency of each device is ranked as: column-type bioretention device in water storage> straight discharge type bioretention device> submerged bioretention device. Based on the conditions of different rainfall intervals, it is found that the nitrogen removal effect of the column-type device in water storage is the best. The research results can provide scientific basis for the rational design of bioretention ponds and other bioreaction devices in different regions.

关 键 词：海绵城市 生物滞留装置 降雨间隔 除氮 内柱渗水 

分 类 号：X5[环境科学与工程—环境工程]