内回流对厌氧氨氧化UASB反应器脱氮性能的影响  

Effects of internal recycle on the nitrogen removal performance of an ANAMMOX UASB reactor

作　　者：付昆明[1] 苏雪莹[1] 王会芳[1] 周厚田 FU Kun-ming*;SU Xue-ying;WANG Hui-fang;ZHOU Hou-tian(Key Laboratory of Urban Storm Water System and Water Environment, Ministry of Education, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China)

机构地区：[1]北京建筑大学环境与能源工程学院,城市雨水系统与水环境省部共建教育部重点实验室,北京100044

出　　处：《中国环境科学》2016年第12期3560-3566,共7页China Environmental Science

基　　金：国家自然科学基金项目(51308025);北京市科研基地建设项目--“节能减排协同创新中心”(2016)

摘　　要：温度为30℃±1℃,厌氧氨氧化污泥为接种污泥,人工配制无机废水为进水,通过改变运行方式,研究内回流对厌氧氨氧化反应器不同运行阶段脱氮效能的影响.结果表明:厌氧氨氧化反应器经过42d启动成功,TN去除负荷为3.26kg/(m^3·d),TN去除率达到76.04%;内回流对于厌氧氨氧化UASB反应器的培养初期与培养成熟后的阶段,表现出完全不同的特征:启动初期,增设内回流(回流比为92%)对反应器运行有负面影响,TN去除率由无回流时的30%下降到19%;颗粒污泥形成后,增设内回流(回流比为92%)对反应器脱氮性能有正面作用,TN去除率由无内回流时的76%提高到84%.The effect of internal recycle on the nitrogen removal by an ANAMMOX UASB reactor at different stages wasinvestigated by changing the operating conditions.The reactor was inoculated with ANAMMOX sludge and fed bysynthetic inorganic wastewater at30℃±1℃.The ANAMMOX reactor was successfully started up in42days,with totalnitrogen(TN)removal efficiency of76.04%at the loading of3.26kg/(m3?d).During the initial stage,the effects ofinternal recycle on the performance of ANAMMOX UASB reactor were completely different for the start-up and maturestage,where the internal recycle(at recycle ratio of92%)had negative effect on the TN removal(the TN removalefficiency decreased from30%to19%)when compared with the case without internal recycle.When granular sludge wasformed,the internal recycle(at recycle ratio of92%)had positive effect on TN removal(the TN removal efficiencyincreased from76%to84%).

关 键 词：内回流 厌氧氨氧化 UASB 颗粒污泥 溶解氧 

分 类 号：X703.1[环境科学与工程—环境工程]