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响应曲面法在反硝化生物滤池运行参数优化中的应用

张 千 吉芳英 徐 璇

张 千, 吉芳英, 徐 璇. 响应曲面法在反硝化生物滤池运行参数优化中的应用[J]. 环境科学研究, 2015, 28(7): 1138-1144.
引用本文: 张 千, 吉芳英, 徐 璇. 响应曲面法在反硝化生物滤池运行参数优化中的应用[J]. 环境科学研究, 2015, 28(7): 1138-1144.
ZHANG Qian, JI Fangying, XU Xuan. Optimization of Denitrification Biofilter Process Using Response Surface Methodology[J]. Research of Environmental Sciences, 2015, 28(7): 1138-1144.
Citation: ZHANG Qian, JI Fangying, XU Xuan. Optimization of Denitrification Biofilter Process Using Response Surface Methodology[J]. Research of Environmental Sciences, 2015, 28(7): 1138-1144.

响应曲面法在反硝化生物滤池运行参数优化中的应用

基金项目: 国家水体污染控制与治理重大科技专项(2013ZX07314001002); 高等学校学科创新引智计划项目(B13041)

Optimization of Denitrification Biofilter Process Using Response Surface Methodology

  • 摘要: 为预测反硝化生物滤池深度处理城镇污水处理厂二沉池出水的脱氮效果,优化工艺运行参数,以黏土陶粒反硝化生物滤池作为反应器,以人工合成污水模拟污水处理厂二沉池出水,采用中心组合试验设计,利用响应曲面法研究反应器NO3--N去除率与HRT(水力停留时间)、进水中ρ(CODCr)和ρ(NO3--N)之间的关系. 统计结果显示,NO3--N去除模型极显著(P<0.000 1),并且模型预测值与试验值能很好地吻合. 方差分析结果表明,HRT及其与进水中ρ(NO3--N)和ρ(CODCr)的交互作用对反硝化滤池NO3--N的去除率影响不显著(P>0.05),而进水中ρ(NO3--N)和ρ(CODCr)及其交互作用对反硝化滤池NO3--N的去除具有显著影响(P<0.05). 3个因素对NO3--N去除率影响强弱的顺序为进水ρ(CODCr)>进水ρ(NO3--N)>HRT. 在HRT为2.50 h的条件下,当进水中ρ(NO3--N)<11.00 mg/L及ρ(CODCr)>43.00 mg/L时,反硝化滤池NO3--N的去除率可以达到71.0%以上.

     

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  • 刊出日期:  2015-07-25

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