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化工学报  2015 

多因素对反硝化除磷过程中COD、N和P的去除分析

DOI: 10.11949/j.issn.0438-1157.20141549, PP. 1467-1475

Keywords: 反硝化除磷,响应面,COD,硝酸盐氮,温度,缺氧反应时间

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Abstract:

以A2O-生物接触氧化(BCO)工艺系统反硝化除磷活性污泥为研究对象,应用CentralCompositeDesign(CCD)设计考察了起始COD浓度、硝酸盐氮浓度、反应温度和缺氧反应时间对反硝化除磷反应的3个响应值COD去除率(Ycod)、N去除率(Yn)和P去除率(Yp)的影响。结果表明,起始COD对反硝化除磷反应中COD、N和P的去除都有重要影响,且缺氧反应时间对Yn有较大影响,反应温度对Yp有很大影响;3个响应值的模型方程均显著,R2分别为0.9853、0.9118和0.9972;当COD为316.95mg·L-1、硝酸盐氮为42.26mg·L-1、反应温度为27.19℃、缺氧反应时间为237.37min时,Ycod、Yn和Yp的模型预测值分别为93.54%、99.96%和99.56%,试验响应值分别为92.03%、91.15%和81.64%

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