摘要
以实际城市生活污水为处理对象,调整A/O分段进水工艺结构和运行参数,对比研究了系统去碳、脱氮、除磷性能,着重分析了改进后工艺(改良UCT分段进水工艺)的脱氮除磷机理.结果表明,改良UCT分段进水工艺在进水分配比40%:30%:30%,污泥龄8～9 d,内循环和污泥循环比75%,厌氧区、缺氧区、好氧区的体积比1∶3∶6的运行条件下,可以同时获得碳、总氮、总磷的高效去除,去除率分别为(83.9±3.3)%、(83.5±1.4)%和(86.6±2.4)%,对比A/O分段进水工艺脱氮除磷性能得到了显著的提升.
The anoxic/oxic （A/O） step feed process unit and operation parameters were adjusted to increase organics and nutrient removal by reconfiguring the process into a modified University of Cape town （UCT） step feed process treating municipal wastewater. The nutrients removal mechanisms in the modified UCT step feed process were discussed in detail. Results showed that the simultaneously highest removal efficiencies of chemical oxygen demanding （COD） of （ 83.9 ＋ 3.3 ） %, total nitrogen （TN） of （ 83.5 ＋ 1.4） % and phosphorus of （86.6 ＋ 2.4） % were obtained in the modified UCT step feed process with the optimum operation parameters, which were the influent distribution ratio of 40% ： 30% ： 30% , the sludge retention time of 8 -9 d, both the internal recycle ratio and the sludge recycle ratio of 75% , and the ratio of anaerobic/anoxic/oxic volumes of l ： 3 ： 6. In comparison with A/O step feed process, nitrogen and phosphorus removal performance was remarkablely improved.
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2012年第11期1704-1709,共6页
Journal of Beijing University of Technology
基金
北京市属高等学校人才强教计划高层次人才资助项目(PHR20090502)
'城市水资源与水环境国家重点实验室'开放基金资助项目(QAK201006)
北京工业大学研究生科技基金资助项目(ykj-2011-6576)
关键词
分段进水
缺氧
好氧
同步硝化反硝化
反硝化除磷
生物脱氮
step feed
anoxic/oxic （A/O）
simultaneous nitrification and denitrifieation （ SND ）
denitrifying phosphorus removal
biological nutrient removal （BNR）
