摘要
针对河道水体氨氮超标的问题,采用微孔管道空气-臭氧混合曝气增氧技术,研究曝气种类、时间、位置等因素对河道水质改善的影响。运行结果表明该技术对NH^(+)_(4)-N有较好的去除效果,运行13 d时水质有明显改善,下游段河水改善效果好于中上游段;经过1个月左右的运行,下游段河水NH^(+)_(4)-N去除率达到73.3%,浓度降为0.92 mg/L,达到《地表水环境质量标准》(GB 3838-2002)中III类水标准。试验结果为以氨氮为主要超标因子的河道治理提供了切实可行的工程技术借鉴。
Aiming at the problem of excessive ammonia nitrogen in river water,the microporous duct air-ozone aeration technology was adopted to study the influence of aeration type,aeration time and aeration location on the improvement of river water quality.The operation results show that this technology has a good removal effect on NH^(+)_(4)-N,and the water quality has been significantly improved after 13 days of operation.The improvement effect of the lower reaches is better than that of the middle and upper reaches.After about one month of operation,the NH^(+)_(4)-N removal rate of the downstream reaches 73.3%,and the concentration of NH^(+)_(4)-N is reduced to 0.92 mg/L,which meets the Class III water standard in the Environmental Quality Standard for Surface Water(GB 3838-2002).The test results provide practical engineering technology reference for the river channel with ammonia-nitrogen as the main over-standard factor.
作者
王正芳
胡建利
曹新
张玉龙
桂林
Wang Zhengfang;Hu Jianli;Cao Xin;Zhang Yulong;Gui Lin(Suzhou Institute of Trade & Commerce, Suzhou 215000, China;Safety and Environmental Protection Agency, Suzhou xiangcheng economic development zone, Suzhou 215131, China;Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China;Jianjia Environmental Technology(Suzhou) Co., Ltd, Suzhou 215144, China)
出处
《环境科学与管理》
CAS
2021年第10期86-91,共6页
Environmental Science and Management
基金
中央高校基本科研业务费专项资金自由探索项目(2232019D3-21)
苏州经贸职业技术学院院级课题(YJ-ZK2112)。
关键词
曝气复氧
原位修复
臭氧
微米气泡
氨氮去除
aeration reoxygenation
in-situ remediation
ozone
microbubble
NH^(+)_(4)-N removal
