A/O体积比对BAF前置反硝化工艺性能的影响  

INFLUENCE OF VOLUME RATIO OF ANOXIC FILTER ON AEROBIC FILTER ON PROCESS PERFORMANCE OF BAF PRE-DENITRIFICATION

作　　者：张诗华[1] 郑俊[1,2] 张刚[3] 宁靓[2] 

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243002 [2]马鞍山市华骐环保科技发展有限公司,安徽马鞍山243051 [3]浙江省环境保护科学设计研究院,浙江杭州310007

出　　处：《水处理技术》2010年第1期70-73,共4页Technology of Water Treatment

基　　金：国家十一五科技攻关计划引导项目(2004BA649C)

摘　　要：基于A/O法的BAF前置反硝化脱氮工艺同时具有A/O工艺和BAF工艺的优点,试验考察了4种A/O体积比(n)对生活污水中COD、氨氮及总氮去除效果的影响。研究结果表明,COD的去除率与n呈正相关;同时该工艺具有很强的硝化和脱氮性能,其出水氨氮和总氮均能达到城镇污水处理厂污染物排放标准(GB18918-2002)的一级A标准;当n为2/3时,该工艺对氨氮和总氮的去除率均达到最佳,分别为92.7%和70.4%;此外,在回流比为150%,进水流量为16.5L.h-1,气水体积比为4:1～6:1,水温为19.5～26.5℃的条件下,O段对TN的去除率7.2%,发生同步硝化反硝化现象。The BAF pre-denitrification process on the basis of the A/O process integrates the advantages of the BAF and A/O processes. The influence of the four volume ratios ofanoxic filter （n） to aerobic filter on the removal effect of the BAF pre-denitrification process for organic matters （COD）, ammonia nitrogen （NH3-N） and total nitrogen （TN） in the domestic wastewater was studied. Results revealed that the removal efficiency of COD has positive correlation with volume ratios ofanoxic filter to aerobic filter. Meanwhile, the proeess has a good performance ofnitrification and nitrogen removal. The effluent concentration ammonia nitrogen and total nitrogen meet the first level A criteria specified in the discharge standard of pollutants for municipal wastewater treatment plant （GB 18918-2002）. When the volume ratio was 2/3,the highest removal efficiencies of NH3-N and TN were respectively 92.7% and 70.4%,which was the best operation condition. Additionally, under the conditions of the reflux ratio was 1.5; wastewater flux was 16.5 L·h^-1 ;gases/water was 4 -6;temperature was 19.5 -26.5 ℃ ,the TN removal efficiencies reach 7.2% in the anoxic filter, which shows simultaneous nitrification and denitrification.

关 键 词：A/O 体积比 生活污水 BAF 前置反硝化 

分 类 号：X703.1[环境科学与工程—环境工程]