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响应面法优化克浅十油田废水的混凝沉淀工艺

Keywords: 响应面法,混凝沉淀,去除率,油田废水

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Abstract:

以克浅十污水处理站原水为研究对象,采用混凝沉淀工艺,探讨优选出的复配混凝剂投加量、助凝剂投加量及静置时间对原水中浊度和总铁去除效果的影响。应用Box-Behnken中心组合实验和响应面分析法,建立混凝剂对处理原水的二次多项式数学模型,确定了混凝沉淀去除原水浊度和总铁的优化工艺参数分别为:复配混凝剂投加量为152.15mg/L、143.84mg/L,助凝剂投加量为4.14mg/L、4.32mg/L,静置时间为11.77min、11.22min。在此工艺条件下回归方程得到的浊度和总铁的去除率预测值与实验值接近,且拟合性良好,误差介于3%~5%之间。通过均值内插法,对比浊度和总铁的多元二次回归方程,推导得出的2组最佳工艺条件均能满足浊度和总铁的去除要求。

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