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高氮渗滤液短程深度脱氮及反硝化动力学
引用本文:孙洪伟,王淑莹,张树军,杨庆,侯红勋,彭永臻.高氮渗滤液短程深度脱氮及反硝化动力学[J].环境科学,2010,31(1):129-133.
作者姓名:孙洪伟  王淑莹  张树军  杨庆  侯红勋  彭永臻
作者单位:北京工业大学北京市水质科学与水环境恢复工程重点实验室;安徽国祯环保节能科技股份有限公司;
基金项目:“十一五”国家重大科技专项(2008ZX07317-007-1);;北京市自然科学基金重点项目(8091001);;国家自然科学基金项目(50808128)
摘    要:采用单级UASB-SBR生化系统处理实际高氮晚期渗滤液,重点研究了系统的有机物和氮去除特性,同时考察了SBR短程生物脱氮系统内微生物的反硝化动力学特性.试验结果表明,该生化系统能够高效、深度去除渗滤液内高浓度有机物和氮.UASB反应器的平均COD负荷为6.5 kg/(m3.d),去除速率为5.3 kg/(m3.d).在进水COD平均为6 537 mg.L-1,NH+4-N为2 021mg.L-1的条件下,出水分别为354 mg.L-1和2.8 mg.L-1以下,去除率分别为94.6%和99.8%,尤其是该系统获得了99.2%的TN去除率,出水TN20 mg.L-1,实现了深度脱氮的目的.SBR反应器实现并维持了稳定的短程硝化,通过90%以上的亚硝化率实现高效的氨氮去除,同时SBR系统内微生物的反硝化特性符合Monod动力学方程.

关 键 词:垃圾渗滤液  单级UASB-SBR  深度脱氮  短程硝化  动力学  
收稿时间:2009/2/28 0:00:00
修稿时间:5/4/2009 12:00:00 AM

Advanced Nitrogen Removal via Nitrite from Landfill Leachate with High Nitrogen Concentration and Kinetics of Denitritation
SUN Hong-wei,WANG Shu-ying,ZHANG Shu-jun,YANG Qing,HOU Hong-xun and PENG Yong-zhen.Advanced Nitrogen Removal via Nitrite from Landfill Leachate with High Nitrogen Concentration and Kinetics of Denitritation[J].Chinese Journal of Environmental Science,2010,31(1):129-133.
Authors:SUN Hong-wei  WANG Shu-ying  ZHANG Shu-jun  YANG Qing  HOU Hong-xun and PENG Yong-zhen
Institution:1.Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering;Beijing University of Technology;Beijing 100124;China;2.Anhui Guozhen Environmental Projection Sci.& Tech.Co.Ltd.;Hefei 230088;China
Abstract:The treatment of real leachate from municipal landfill with high ammonia nitrogen (NH+4-N) content was investigated by using lab-scale first-stage up-flow anaerobic sludge bed (UASB)-SBR biological system. The denitritation kinetics characteristics of microbial population in the SBR reactor was also studied. Experimental results clearly showed that the average organic loading rate of UASB reactor reached 6.5 kg/(m3·d), the average organic removal rate was 5.3 kg/(m3·d). High concentrations of COD and nitrogen contained in landfill leachate were removed efficiently, average COD and NH+4-N of influent could be reduced from 6 537 mg·L-1and 2 021 mg·L-1 to 354 mg·L-1 and 2.8 mg·L-1, respectively, the removal efficiencies reached 94.6% and 99.8%, respectively. Especially, above 99.2% removal efficiency of TN was obtained, and effluent TN concentration below 20 mg·L-1,so advanced nitrogen removal was achieved in the biological system. Ammonia nitrogen was removed by high effective partial nitrification with above 90% nitrite accumulation ratio, and the denitritation kinetics characteristics of the microbial population was fit well for Monod Equation.
Keywords:landfill leachate  first-stage UASB-SBR  advanced nitrogen removal  partial nitrification  kinetic  
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