摘要
采用倒置A2/O工艺处理垃圾渗滤液与城市污水混合后的污水脱氮。正交试验得到,水力停留时间是影响混合污水脱氮和有机物去除的控制因素;理论最优运行参数是HRT为9 h、ρ(DO)为2 mg/L、R为80%、r为200%,该工况下COD、NH3-N和TN的平均去除率分别为77.4%、97.2%和62.4%,出水浓度可稳定地达到GB18918-2002《城镇污水处理厂污染物排放标准》一级A标准。
The reversed A2 /O process was used for nitrogen removal of landfill leachate and municipal wastewater.The results showed that HRT was the key factor for nitrogen and organics removal efficiency by orthogonal experiment.On conditions of HRT 9 h,DO 2.0 mg /L,R 80%,r 200%,the effect of organics and nitrogen removal was the best,and the average removal rate of COD,NH3-N,TN were 77.4%,97.2% and 62.4%;meanwhile the effluent concentration could steadily meet A-level of the first-order of the＂Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant＂.
出处
《环境工程》
CAS
CSCD
北大核心
2010年第5期39-42,46,共5页
Environmental Engineering
基金
广州市科技计划项目(2007J1-Q411)
广州大学新苗计划项目(20071002)
关键词
倒置A2/O工艺
垃圾渗滤液
城市污水
脱氮
正交试验
水力停留时间
reversed A2 /O process
landfill leachate
municipal wastewater
nitrogen removal
orthogonal experiment
hydraulic retention time
