厌氧—交替O/A的序批式膜生物反应器脱氮除磷性能比较  

Effect of alternating O/A on treatment performance of the A—O/A SMBR

作　　者：张玉翠[1] 张雁秋[1] 张传义[1] 王晓[1] 鹿飞[1] 孙开蓓[1] 

机构地区：[1]江苏省资源环境信息工程重点实验室(中国矿业大学),江苏徐州221008

出　　处：《环境污染与防治》2009年第3期40-43,共4页Environmental Pollution & Control

基　　金：江苏省研究生创新计划项目(No.CX07B-173Z);中国矿业大学科技基金资助项目(No.0P061059)

摘　　要：提出一种高效脱氮除磷的新工艺,即厌氧—交替O/A的序批式膜生物反应器。在HRT为8.4h、交替O/A时间为10min/10min时,系统氨氮、总氮、总磷的平均去除率分别达到99.57%、89.92%、93.26%。典型周期试验证明,频繁的O/A环境更利于系统高效脱氮除磷,且O/A交替越频繁,系统中反硝化聚磷菌(DPAO)占聚磷菌(PAO)的比例(即缺氧吸磷速率与好氧吸磷速率的比值)越大。当交替O/A时间为10min/10min时,系统中DPAO占PAO的比例为70.87%,比交替O/A时间为30min/30min时提高了66%。Enhanced nitrogen and phosphorus removals were achieved in the anaerobic-alternating aerobic/anoxic membrane bioreactor （A-O/A SMBR）. The treatment at a total HRT of 8.4 h and an alternating O/A of 10 min/ 10 min achieved the high removals of 99.57%, 89.92% and 93.26% for ammonia nitrogen, total nitrogen and total phosphorus respectively. More frequent O/A alternation further improved the treatment performance and resulted in a higher DPAO fraction; at O/A=10 min/10 min, the DPAO fraction of the A-O/A SMBR was 70.87%, which was 66% higher than the fraction when it was operating at O/A=30 min/30 min.

关 键 词：脱氮除磷 反硝化聚磷 交替O/A 

分 类 号：X703[环境科学与工程—环境工程]