作　　者： ; ; ; ; ;

机构地区： 西安建筑科技大学环境与市政工程学院

出　　处： 《江苏大学学报（自然科学版）》 2011年第5期587-590,共4页

摘　　要： 通过接种普通活性污泥,以氨氮为进水基质,在连续曝气SBR系统中进行了厌氧氨氧化菌的富集与单级自养脱氮效能试验.控制系统DO质量浓度为0.8-1.0 mg.L^-1、温度为30-31℃,经过1 a左右的短程硝化稳定运行期后氮素去除率达到9%;DO质量浓度降至0.3-0.5 mg.L^-1,并将单周期的曝气时间由330 min延长至450 min后,出水亚硝酸盐氮质量浓度由200 mg.L^-1持续降到5 mg.L^-1以下,获得了自养脱氮效果.TN最高去除率和去除速率分别达到79.8%和0.15 kg.kg^-1.d^-1.系统中污泥形态结构由絮体向颗粒态转变;镜检发现污泥内部分布有深色球状物.经FISH鉴定,污泥内部富集了厌氧氨氧化菌.结果表明：连续曝气短程硝化悬浮系统中可直接富集厌氧氨氧化菌,获得单级自养脱氮效果. Inoculated with conventional activated sludge,the enrichment of anaerobic ammonium oxidizing bacteria（AnAOB） and nitrogen removal performance were investigated in continuous aeration SBR mode to treat ammonium rich influent.For the DO concentration of 0.8 to 1.0 mg·L^-1,9% of nitrogen compound was removed after the treatment for one year at the temperature of 30 to 31 ℃.For decreased DO concentration of 0.3 to 0.5 mg·L^-1,when aeration time was prolonged from 330 to 450 min per cycle,autotrophic nitrogen removal was achieved.The maximum TN removal efficiency and removal rate were 79.8% and 0.15 kg·kg^-1·d^-1,respectively.The sludge structure was changed from floc to granules.By microscope detection and FISH analysis,it was found that something like ball was distributed in floc and AnAOB was enriched in sludge.The results show that the enrichment of AnAOB and single autotrophic nitrogen removal can be achieved in suspended system by continuous aeration mode.

关 键 词： 厌氧氨氧化菌 序批式反应器 连续曝气 短程硝化 单级自养脱氮

领　　域： [环境科学与工程]