体积比对改良A2／O-同步脱氮除磷装置去除效果的影响  

Effect of Volume Ratio on Simultaneous Nitrogen and Phosphorus Removal Effect in Modified A^2/O Device

作　　者：杨胤[1] 赵静[1] 王田天 周少奇[2,3,4] 

机构地区：[1]华南理工大学土木与交通学院,广东广州510640 [2]华南理工大学环境与能源学院,广东省教育厅环境保护与生态修复重点实验室,广东广州510006 [3]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640 [4]贵州科学院,贵州贵阳550001

出　　处：《水处理技术》2016年第4期91-95,共5页Technology of Water Treatment

基　　金：国家自然科学基金(21277052);广州市环保局示范和应用项目;中央高校基本科研业务费专项资金(2014ZM0085);广东省自然科学基金项目(S2011040005784);教育部留学回国人员科研启动基金

摘　　要：研究设计了一套改良A^2/O-强化同步脱氮除磷装置,探讨了该装置在处理南方城市低碳氮比的城市污水的同步脱氮除磷功能,给出了该装置的优化运行参数。研究结果表明,在温度为22~28℃、好氧池末端DO的质量浓度为1.5 mg/L、HRT为8 h,硝化液回流体积比为200%,缺氧混合液回流体积比为150%,污泥回流体积比为60%~80%,厌氧池、缺氧池、好氧池体积比为1:2.6:6.4时,中试装置出水COD和NH_4^+-N、TN、TP的质量浓度平均分别为36.52 mg/L和0.87、12.95、0.43 mg/L,符合GB 18918-2002一级A标准。A modified A2/O device that enhances the removal of nitrogen and phosphorus has been designed for the municipal wastewater of low C/N ratio in cities of south China. The effect of the modified A2/O device on simultaneous nitrogen and phosphorus removal has been investigated. Then the optimum operation parameters of the device were obtained. The results showed that mass concentrations of COD, NI-L＋-N, TN and TP in the effluent from the pilot plant were 36.52, 0.87, 12.95 and 0.43 mg/L, respectively, when the temperature, mass concentration of DO of the tail end of aeration pool, HRT, nitrification liquor reflux volume ratio, anoxic mixture reflux volume ratio, and sludge reflux volume ratio were 22--28 ℃, 1.5 mg/L, 8 h, 200%, 150%, and 60%--80%, respectively, with the volume ratio of anaerobic tank, anoxic tank and aerobic tank being 1：2.6：6.4. The quality of final effluent was satisfactory with one-class A criteria of GB 18918--2002.

关 键 词：城市污水 同步脱氮除磷 中试 低碳氮比 

分 类 号：X703.1[环境科学与工程—环境工程]