分配比对分段进水A^2/O工艺脱氮除磷的影响  

Affection of distribution ratio of influent on nitrogen and phosphorus removal of step feed-A^2/O process

作　　者：徐宇峰[1,2] 王让 唐锋兵 林佳琪[1,2] 张炜 李思敏 XU Yu-feng;WANG Rang;TANG Feng-bing;LIN Jia-qi;ZHANG Wei;LI Si-min(Hebei Engineering Research Center for Water Pollution Control and Water Ecological Remediation,Hebei University of Engineering,Handan 056038,China;College of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学河北省水污染控制与水生态修复工程技术研究中心,河北邯郸056038 [2]河北工程大学能源与环境工程学院,河北邯郸056038

出　　处：《浙江大学学报（工学版）》2018年第4期761-768,共8页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(51508149);河北省自然基金资助项目(E2014402101);国家水体污染控制与治理科技重大专项资助项目(2012ZX07203-003);河北省应用基础研究计划重点基础研究资助项目(12966738D)

摘　　要：以低C/N实际污水为研究对象,研究进水分配比对分段进水A^2/O工艺脱氮除磷性能的影响.以稳态条件下建立的物料平衡方程为基础,分析进水分配比对处理过程的影响.结果表明,分段进水A^2/O工艺平均出水CODCr和NH3-N质量浓度基本维持为25.6~41.2mg/L和0.35~1.40mg/L,出水水质较稳定;出水TN、TP受进水分配比的影响明显.根据已建立的物料平衡方程分析发现,当进水分配比由6∶3降低至3∶6时,缺氧单元反硝化脱氮贡献率由36.95%升至83.47%,厌氧单元反硝化脱氮贡献率由43.81%降至12.30%,好氧单元同步硝化反硝化脱氮贡献率由19.24%降至4.23%,缺氧单元反硝化成为去除TN的主要途径,TN总体去除率升高9.95%;缺氧单元缺氧聚磷除磷贡献率由5.20%升至13.00%,好氧单元好氧聚磷除磷贡献率由94.80%降低至87.00%,好氧聚磷为去除TP的主要途径,但TP总体去除率降低5.37%.The low-C/N municipal wastewater was taken as the research object,and the influence of influent distribution ratio on nitrogen and phosphorus removal in A 2/O step feed process was analyzed.The influence of influent distribution ratio on the treating process was analyzed based on the material balance equations established under steady-state conditions.Results showed that the average effluent mass concentrations of COD Cr and NH 3-N were maintained at 25.6-41.2 mg/L and 0.35-1.40 mg/L respectively,which were stable.The average effluent concentrations of TN and TP were obviously affected.The established material balance equations were analyzed.While the distribution ratio of influent was decreased from 6∶3 to 3∶6,the contribution rate of the denitrification in anoxia unit was increased from 36.95%to 83.47%,which in anaerobic unit was decreased from 43.81%to 12.30%,and the contribution rate of the simultaneous nitrification and denitrification in aerobic unit was decreased from 19.24%to 4.23%.The anaerobic denitrification became the main way to remove TN,and the general removal efficiency of TN was increased by 9.95%.The contribution rate of dephosphatation in anoxia unit was increased from 5.20%to 13.00%,which in aerobic unit was decreased from 94.80%to 87.00%.The aerobic dephosphatation was the main way to remove TP,and the general removal efficiency of TP was decreased by 5.37%.

关 键 词：分段进水 脱氮除磷 去除途径 A2/O工艺 物料平衡 

分 类 号：TU998[建筑科学—市政工程]