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SBR短程硝化的实现、维持及稳定性
引用本文:张强,徐国勋,吴文雯,曾林慧.SBR短程硝化的实现、维持及稳定性[J].城市环境与城市生态,2008(6).
作者姓名:张强  徐国勋  吴文雯  曾林慧
作者单位:上海理工大学城市建设与环境工程学院;
基金项目:上海市教育高地资助项目(568001)
摘    要:以模拟生活污水为研究对象,控制SBR反应器内pH值在7.5~8.5的条件下,实现了短程硝化生物脱氮工艺,NO2--N/NOx--N的比率始终维持在90%以上,同时发现pH值和DO浓度变化特征曲线在短程硝化过程中具有良好的重现性。另外,保持DO浓度在0.5~1.0mg/L,硝化时间为5.5h,可较好的维持短程硝化生物脱氮过程,且经过1个月的运行硝化类型没有发生改变,亚硝酸盐积累率仍保持在90%以上。在此基础上,研究了系统对COD和NH4+-N浓度的抗冲击负荷能力。结果表明,该系统具有较强的抗冲击能力。

关 键 词:SBR  短程硝化  定时控制  低溶解氧  

Achievement,Maintainment and Stability of Shortcut Biological Nitrification in Sequencing Batch Reactor
ZHANG Qiang,XU Guo-xun,WU Wen-wen,ZENG Lin-hui.Achievement,Maintainment and Stability of Shortcut Biological Nitrification in Sequencing Batch Reactor[J].Urban Environment & Urban Ecology,2008(6).
Authors:ZHANG Qiang  XU Guo-xun  WU Wen-wen  ZENG Lin-hui
Institution:ZHANG Qiang,XU Guo-xun,WU Wen-wen,ZENG Lin-hui(Urban Construction , Environment Engineering,University of Shanghai for Science, Technology,Shanghai 20093,China)
Abstract:The shortcut nitrification and denitrification were achieved efficiently by controlling pH value between 7.5 and 8.5 in the sequencing batch reactor (SBR) treating simulated municipal sewage. The nitrosation rate (NO-2-N/NO-x-N) maintained above 90% all the time. The result also showed good repeatabilities of pH value and DO concentration during short nitrification process. With DO concentration at 0.5~1.0 mg/L and aeration time at 5.5 hours,the shortcut nitrification and denitrification can be kept in good...
Keywords:SBR  shortcut nitrification  fixed-time control  low DO  
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