曝气频率及溶解氧对匹配厌氧氨氧化型亚硝化反应的影响  

Effect of Aeration Frequency and Dissolved Oxygen on Anaerobic Ammonium Oxidation Type Nitrosation

作　　者：伍健伯 李旭光[1] WU Jian-bo;LI Xu-guang(Shenyang Jianzhu University,Liaoning Shenyang 110168,China)

机构地区：[1]沈阳建筑大学环境学院

出　　处：《辽宁化工》2019年第12期1179-1182,共4页Liaoning Chemical Industry

摘　　要：试验采用匹配厌氧氨氧化型SBR工艺处理模拟废水,反应器在(28±1)℃,pH=7.5~8.0,曝气量为0.2~0.3 L·min^-1条件下启动。通过静态试验考察在不同曝气频率(曝气5 min/停曝5 min、曝气15 min/停曝15 min、曝气30 min/停曝30 min及曝气45 min/停曝45 min)和溶解氧(DO=0.5 mg/L、1.0 mg/L、1.5 mg/L和2.0 mg/L)对反应器内部分亚硝化的迚程的影响。结果表明:在曝气频率为曝气30 min/停曝30min、DO=1mg/L时,NO2-N积累率维持在90%以上。适中的间歇曝气能有效促迚亚硝化细菌富集,有利于积累高浓度的NO2-N。The simulated wastewater was treated by the matched anaerobic ammonium oxidation type SBR process.The reactor was started at(28±1)°C,pH=7.5~8.0,and the aeration amount was 0.2~0.3 L·min^-1.The effect of the aeration frequency and dissolved oxygen on the progress of partial nitrosation in the reactor was investigated through static test.The results showed that the NO2-N accumulation rate maintained above 90% when the aeration frequency was 30 min/30 min of aeration on/off time and DO=1 mg/L.Moderate intermittent aeration can effectively promote the enrichment of nitrite bacteria and facilitate the accumulation of high concentrations of NO2-N.

关 键 词：匹配厌氧氨氧化的部分亚硝化工艺 曝气频率 DO NO2-N积累率 

分 类 号：TQ085[化学工程]