C/N对A^2O耦合生物曝气滤池脱氮除磷的影响  

Effect of C/N on Nitrogen and Phosphorus Removal in A^2O Coupled Biological Aerated Filter

作　　者：李怡 朱恒亮 LI Yi;ZHU Hengliang(Guizhou Institute of Technology,College of Resources and Environmental Engineering;Woter Environment Limited Company： Guiyang 550003,China)

机构地区：[1]贵州理工学院资源与环境工程学院 [2]中国水环境集团有限公司,贵州贵阳550003

出　　处：《水处理技术》2018年第9期120-123,共4页Technology of Water Treatment

摘　　要：针对生物曝气滤池(BAF)处理效率常因进水碳源不足和硝化不充分而受到限制的问题,本研究报道了1种厌氧-缺氧-好氧(A^2O)耦合BAF强化污水脱氮除磷和有机物去除的新策略,并进一步探究进水C/N对营养盐污染物去除的影响。结果表明,A^2O耦合BAF能够有效去除营养盐,并且COD、TN和TP的去除率分别为91%、84.9%和92%。C/N对A^2O耦合BAF反应体系COD的去除影响不明显,并且COD去除主要集中在厌氧区域。m(C)/m(N)由3增加至5,TN和磷酸盐的去除效率增加,但进一步增加C/N,TN和磷酸盐的去除不明显,因此A^2O耦合BAF体系的优化m(C)/m(N)是5。Aimed at the problem of biological aeration filter （BAF） treatment efficiency is often limited by insufficient carbon source and inadequate nitrification. A new strategy of anaerobic/anoxic/oxic （A2O） coupled BAF for nitrogen and phosphorus removal from wastewater and organic matter removal was studied, and the effect of influent water C/N on nutritive salt pollutant removal was further explored. The results showed that, A2O coupled BAF could effectively remove nutritive salt, and the COD, TN and TP removal efficiencies was 91%, 84.9% and 92%, respectively. The effect of C/N on the COD removal from A2O coupled BAF system was not obvious, and the COD removal mainly concentrated in the anaerobic area. When m（C）/m（N） increased from 3 to 5, TN and phosphate removal efficiency increased, however, further increase of C/N, TN and phosphate removal was not obvious. Therefore, the optimum m（C）/m（N） of A2O coupled BAF system was 5.

关 键 词：脱氮除磷 A^2O耦合生物曝气滤池 C/N 

分 类 号：X703.1[环境科学与工程—环境工程]