净水技术Issue(2)：45-50,6.DOI:10.15890/j.cnki.jsjs.2017.02.008
二价铁耦合有机碳源强化低碳源污水脱氮除磷处理
Treatment of Denitrification and Phosphorus Removal of Urban Wastewater with Low-Carbon Enhanced by Fe(H) Coupling Organic Carbon Source
摘要
Abstract
As the shortages of high cost and high sludge production of adding external carbon source for denitrification and chemical phosphorus removal in the effluent of biological system in low-carbon wastewater treatment process in China's southern cities,this research took the simulated wastewater of denitrificaton (BOD/NOx-N =2.5) as research object and Fe (Ⅱ) was dosed in semisequencing SBR anoxia reactor as coupling agent of organic carbon source in order to enhance denitrifying biological activity synergy chemical phosphorus removal efficiency.The low-carbon wastewater was fed to the SBR as influent.Fe (Ⅱ) with different kinds of organic carbon source were added to the SBR,nitrogen and phosphorus removal efficiency was investigated during the experimental period in considering pollutants removal efficiency and economic cost.FeSO4 · 7H2O plus CH3 OH were determined to be the best coupling body.Besides,the result showed that coupling body can increase 2.83％ denitrifying rate,this may be because of the iron promoting the enzyme activity of denitrifying bacteria.The optimal conditions were confirmed by orthogonal experiment,the results showed that the optimal conditions were:m(CH3OH)/m(NOx-N) =5,Fe/P =2.4、T =33 ℃ 、pH =7.The effluent(N and Pconcentration) could reach class Ⅲ of the Environmental Quality Standards for Surface Water under this condition.关键词
低碳源污水/脱氮除磷/二价铁/有机碳源耦合体Key words
wastewater with low-carbon source/denitrification and phosphorous removal/Fe (Ⅱ)/coupling body of organic carbon source分类
资源环境引用本文复制引用
魏伟,李迪武,李杰,郭艳君,何义亮,利德铭..二价铁耦合有机碳源强化低碳源污水脱氮除磷处理[J].净水技术,2017,(2):45-50,6.基金项目
国家水体污染控制与治理科技重大专项(2014ZX07206001) （2014ZX07206001）
