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《Chinese Journal of Environmental Engineering》 2012-01
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Effects of operating conditions on shortcut nitrification process

Lü Yongtao1 Wang Lei1 Wu Hongya2 Chen Zhen3 Wang Tao1 Wang Zhiying1(1.School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China; 2.Xianyang Yu Wen Civil Engineering Co.Ltd.,Xianyang 712000,China; 3.Jiangsu Sunny Environmental Protection Engineering Co.Ltd.,Nanjing 210019,China)  
To provide sufficient nitrite as electron acceptor for Anammox process,the effects of operating conditions on shortcut nitrification were investigated in an SBR.Culture medium was used for enrichment of ammonium-oxidizing bacteria(AOB) inoculated from SBR,the AOB and nitrite-oxidizing bacteria(NOB) was present in a quantitative ratio of 104:1.Operating conditions of shortcut nitrification were investigated,the optimal temperature of 30 ℃,pH of 7.5~8 and nHCO-3/nNH+4-N of 1 were gained for the growth of AOB.The SBR was optimized according to the optimal conditions,and 90% of ammonia removal efficiency and above 85% of nitrite accumulation efficiency were reached respectively when the influent ammonia concentration was 250 mg/L.The quantity of AOB and NOB was in a ratio of 103∶ 1.Sufficient nitrite was provided as stable electron acceptor for the subsequent Anammox process for high ammonia concentration wastewater treatment.
【Fund】: 国家自然科学基金资助项目(51108367);; 陕西省教育厅专项基金资助项目(11JK0759) 陕西省教育厅重点实验室建设项目(11JS056)
【CateGory Index】: X703
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