外加剩余污泥水解酸化液碳源时曝气生物滤池的生物脱氮性能  

BIOLOGICAL NITROGEN REMOVAL PERFORMANCES OF BIOLOGICAL AERATED FILTER WITH HYDROLYSIS-ACIDIFICATION LIQUOR OF EXCESS SLUDGE AS ADDITIONAL CARBON SOURCE

作　　者：梅翔[1] 王蓓蕾[1] 成慧灵[1] 吴飞[1] 严小明 陈江 

机构地区：[1]南京林业大学化学工程学院环境工程系,江苏南京210037 [2]南京市江心洲污水处理厂,江苏南京210019

出　　处：《水处理技术》2012年第1期41-46,共6页Technology of Water Treatment

基　　金：国家"十一五"水专项子课题资助(2009ZX07101-15);南京林业大学人才基金资助项目(G2005-06);江苏省研究生培养创新工程资助项目(苏教研[2010]6号);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：利用剩余污泥水解酸化液作为外加碳源研究中部曝气和底部曝气曝气生物滤池(BAF)处理低碳氮比生活污水时的生物脱氮性能。结果表明,碳源与污水投配的流量比以及是否回流对BAF生物脱氮效果影响明显,气水流量比和回流流量比对BAF生物脱氮效果有一定影响;进水NH4+-N、TN质量浓度和COD分别为43.11、45.07、29.2mg.L-1时,中部曝气BAF的NH4+-N和TN去除率分别为99.04%和78.32%,出水COD为32.4 mg.L-1;底部曝气BAF的NH4+-N和TN去除率分别为98.61%和68.99%,出水COD为28.4 mg.L-1。研究表明,BAF在2种运行方式下可获得良好的硝化与反硝化性能,且不会引起二次污染。Biological nitrogen removal performances of the biological aerated filter （BAF） under mid-aeration mode and bottom-aeration mode, respectively, for the treatment of low C/N ratio domestic sewage were studied when the hydrolysis-acidification liquor of excess sludge was used as the additional carbon source. The results showed that the flow ratio of carbon source to influent and whether the recirculation was adopted had obvious influences on the biological nitrogen removal performances, and the air/water ratio and the recirculation ratio had influences to some extent. When the influent NH4＋-N ,TN and COD were 43.11 mg· L^-1 ,45.07 mg· L^-1 and 29.2 mg· L^-1, respectively, NH4＋-N and TN removal rates could reach 99.04% and 78.32%, respectively, and the effluent COD was 32.4 mg· L^-1for the BAF with mid-aeration mode. In the meantime NH4＋-N and TNremoval rates could reach 98.61% and 68.99%, respectively, and the effluent COD was 28.4 mg· L^-1 for the BAF with bottom-aeration mode.This research indicated that good nitrifcation and denitrification performances could be obtained for BAF under two operation modes, and the second pollution could not be caused.

关 键 词：剩余污泥水解酸化液 碳源 低碳氮比生活污水 曝气生物滤池 运行方式 硝化 反硝化 

分 类 号：X703.1[环境科学与工程—环境工程] TQ028.8[化学工程]