水解反硝化+A/O工艺处理低碳氮比城镇废水试验研究  

PILOT-SCALE STUDY ON THE TREATMENT OF MUNICIPAL SEWAGE WITH LOW C/N BY HYDROLYSIS-DENITRIFICATION + A/O PROCESS

作　　者：李斐[1] 宋英豪[1] 王敏 艾绍碧 贾立敏[1] 苏本生[1] 

机构地区：[1]北京化工大学,北京100029 [2]北京北化工程技术有限公司,北京100029

出　　处：《环境工程》2016年第11期23-28,共6页Environmental Engineering

摘　　要：采用水解反硝化强化脱氮工艺,将水解酸化过程与反硝化脱氮过程相结合,研究此工艺对城镇低碳氮比废水的处理效果。实验表明,系统对COD、NH_4^+-N、TN的去除效果较为稳定,去除率分别为87.95%、99.42%、51.84%,出水COD及NH_4^+-N均优于国家一级A排放标准。当硝化液回流比为100%时,为最优工况,在进水C/N比为1时,系统对TN去除率为55.07%,去除量达45.43 mg/L;进水C/N比为0.82时,系统对TN去除率为50.45%,去除量达37.27mg/L。在C/N<1的条件下,系统仍然表现出较高的脱氮性能。对比水解池与后段A/O缺氧池的脱氮效果,水解池在反硝化脱氮能力及碳源利用率方面均优于缺氧段。Hydrolysis-denitrification technology is the combination of hydrolysis process and denitrification process. The study was about the effects of hydrolysis-denitrification technology treating urban waste water with low C-N ratio. The experiment results showed that the removal efficiency of COD,NH＋4-N,TN were 87. 95% 、99. 42% 、51. 84%,the concentration of COD and NH_4~＋-N in effluent were better than the national emission standards A. The optimal operating condition was nitrification liquid reflux ratio of 100%. When C/N ratio was 1,the removal efficiency of TN was 55. 07%,and TN removal amount was45. 43 mg/L; when C/N ratio was 0. 82,the removal efficiency of TN was 50. 45%,and TN removal amount was 37. 27 mg /L. When C/N ratio was less than 1,the system still had high nitrogen removal performance. In the aspect of denitrification capacity and carbon source utilization,hydrolysis tank was superior to anoxic pond of A2/O technology.

关 键 词：低碳氮比 水解酸化 反硝化 脱氮 碳源利用 

分 类 号：X799.3[环境科学与工程—环境工程]