利用间歇曝气实现短程硝化的影响因素  

Study on Factors Affecting Short-Term Nitrification in Intermittent Aeration

作　　者：李亚峰[1] 金蒙蒙[1] 魏春飞[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院

出　　处：《沈阳建筑大学学报（自然科学版）》2013年第6期1104-1108,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51108277);住房和城乡建设部科技攻关项目(2011-K7-9);辽宁环境科研教育"123工程"(CEPF2009-123-2-4)

摘　　要：目的研究在短程硝化实现过程中，曝气频率、pH值、DO质量浓度对NO2--N积累的影响．方法以实际生活污水为试验水样，利用N—SBR系统内培养驯化的亚硝化细菌，在间歇曝气条件下，通过控制不同曝气频率、pH值、DO质量浓度，采用静态试验的方式进行短程硝化试验．结果在一定范围内曝气频率越短越有利于亚硝化细菌的生长，在pH值为7．5—8．0时可以实现短程硝化反应；当曝气频率为曝气15min／停曝15min、DO质量浓度为1mg／L时NO2-N积累率最高达到了94．34％．结论间歇曝气方式可以在较短的时间内完成亚硝化细菌的培养驯化，有效地实现短程硝化，减少了能源和碱度的消耗，是一种经济可行的方式．The achievement of shortcut nitrification in the intermittent aeration and the effect of pH, frequen- cy of intermittent aeration and the mass concentration of DO were studied. In the benefit of nitriosation bac- teria acclimation by N-SBR system, using urban sewage, the intermittent aeration was applied for shortcut ni- trification by the way of static test. Under the conditions of frequency of intermittent aeration at aerating 15 min/non-aerating 15 min, pH = 7.5 -8.0 the shortcut nitrification can reach the achievement. The nitrite ac- cumulation had the best effect under the conditions of mass concentration of DO = 1 mg/L and the highest accumulation rate could be up to 94. 34%. Intermittent aeration was an economically feasible way to achieve short-term nitrification, it can not only cultivate and domesticate the nitriosation bacteria much faster, but it can also reduce the consumption of energy and alkalinity.

关 键 词：间歇曝气 短程硝化反应 亚硝化细菌 NO2-N 

分 类 号：X703[环境科学与工程—环境工程]