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.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
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)
关键词
间歇曝气
短程硝化反应
亚硝化细菌
NO2-N
intermittent aeration
short-term nitrification reaction
nitriosation bacteria
NO
- N
