水资源保护2018，Vol.34Issue(2)：1-6,6.DOI:10.3880/j.issn.1004-6933.2018.02.01
零价铁与微生物耦合系统强化农田排水脱氮效果研究
Enhanced degradation of nitrogen in agricultural drainage by integrated zero-valent iron and microbiological treatment system
摘要
Abstract
Owing to the characteristics of high nitrogen content and low carbon sources,the treatment of traditional activated sludge is not satisfactory,such as the reaction of ammonia nitrogen.Therefore,combining the two method,the system of the zero-valence iron and the microbial coupling system is formed.In this paper,based on the experiment,studies the zero-valent iron and characteristics of the microbial nitrogen coupling system and the influence factors of system efficiency of denitrification,and analyzed by scanning electron microscopy (sem) is zero-valent iron and the mechanism of microbial nitrogen coupling system.The result shows that the iron planer and the microbial coupling system are more efficient in denitrification when the initial total nitrogen concentration is 15 mg/L.Pickling can increase the surface reaction area of the zero-valence iron and improve the efficiency of denitrification.The optimum dosage of iron planer is 15 g/L,the optimum water retention time for the iron and microbial coupling system is 12 h,the optimum pH for the coupling system ranges from 6.0 to 7.5,and the best temperature is about 35 ℃ for coupled system denitrification.关键词
零价铁/微生物耦合系统/脱氮效果/脱氮机理/实验研究Key words
zero-valent iron/microbes coupling system/denitrification/factors/experimental study分类
资源环境引用本文复制引用
王超,周青,侯俊,张菲,黄喻威,许伊,尤国祥..零价铁与微生物耦合系统强化农田排水脱氮效果研究[J].水资源保护,2018,34(2):1-6,6.基金项目
水体污染控制与治理科技重大专项(2017ZX07204003) （2017ZX07204003）
国家自然科学基金优秀青年项目(51722902) （51722902）
国家自然科学基金创新研究群体项目(51421006) （51421006）
