3段进水A/O工艺处理生活污水试验研究  

EXPERIMENTAL STUDY ON TREATMENT OF DOMESTIC WASTEWATER BY THREE-STEP FEED A/O PROCESS

作　　者：马吴俊[1] 孙冬青[1] 纪荣平[1,2] 

机构地区：[1]扬州大学环境科学与工程学院 [2]江苏省环境材料与环境工程重点实验室,江苏扬州225127

出　　处：《水处理技术》2013年第8期71-74,共4页Technology of Water Treatment

基　　金："十二五"国家科技支撑计划项目(2012BAJ24B06-02)

摘　　要：采用3段进水A/O工艺处理低碳源生活污水,分析了系统在等比例进水、HRT 12 h、污泥回流比100%的条件下,系统各段对主要污染物的去除效果和生物脱氮性能。结果表明,对COD、NH4+-N和TN的去除率分别为86.80%、95.21%和72.85%,对于m(C)/m(N)仅为4.1的低碳源生活污水有着很好的脱氮性能,显示了系统对碳源的高效利用;随着各段硝化、反硝化细菌数量的减少,氮脱除速率逐渐降低,表观去除率也随之下降,3者呈正相关关系。Treatment of low-carbon source domestic wastewater by three-step feed A/O process was used in this research,and the removal efficiency of major pollutants and biological denitrification performance in each stage of the reactor was analyzed,under the conditions of same flow distribution ratio,HRT=12 h and sludge reflux ratio 100%.The removal efficiencies of COD and NH4＋-N,TN are 86.80% and 95.21%,72.85% respectively,which has a superb denitrification performance for low-carbon source sewage with m（C）/m（N） only 4.1.Result shows that step-feed system can effectively improve the utilization ratio of carbon source.With the reduction in quantities of nitrification and denitrification bacteria along the reactor,the nitrogen removal rate is gradually decreased,and actual removal efficiency is subsequently declined as well.There was a positive correlation between the three.

关 键 词：分段进水 3段A O 生活污水 低碳氮比 生物脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]