复合曝气生物滤池运行参数的试验研究  

Research on Operating Parameters of Combined Biological Aerated Filter

作　　者：孙楠[1] 董玲[1] 

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243002

出　　处：《环境科学与管理》2011年第6期67-70,共4页Environmental Science and Management

摘　　要：以宜兴市华骐污水处理厂的二级出水作为研究对象,研究碳氮比、水力负荷和气水比对复合曝气生物滤池运行的影响。研究发现,以葡萄糖作碳源,当碳氮比6:1时,滤池对总氮的去除率能达到80%以上,出水亚硝酸盐浓度很低。保持碳氮比为6,随着水力负荷的增大,滤池对总氮的去除率会有所下降,但增大到3.5 m/h时,去除率仍保持在60%以上;水力负荷对于浊度和COD的去除率影响不是很大。随着气水比的增大,好氧段对于COD的去除率呈上升趋势。A pilot scale experiment was carried out with effluent from secondary treatment of Huaqi Wastewater Treatment Plant in Yixing as research object.The C/N ratio,hydraulic load and the gas-water ratio were investigated to analyze their impacts on combined biological aerated filter（CBAF）.The results show that taking glucose as carbon resource with C/N ratio of 6：1,the total nitrogen（TN） removal rate of the biofilters can reach over 80%,and the NO2-concentration in the effluent is low.Maintaining this C/N ratio,the TN removal rate decreased with the increasing of hydraulic load,which was still more than 60% when the hydraulic load was up to 3.5m/h;the turbidity and COD removal rate were not significantly influenced by hydraulic load.The COD removal rate in the aerobic zone increased with the rise of gas-water ratio.

关 键 词：复合曝气生物滤池 水力负荷 碳氮比 气水比 

分 类 号：X703.1[环境科学与工程—环境工程]