响应面法优化污泥电渗透脱水工艺参数

以泥饼含固率作为衡量污泥脱水效果的指标,采用响应面法进行污泥电渗透脱水工艺参数的优化研究。结果表明,最佳反应条件为初始污泥含固率为8.58%,初始电压梯度为20.88 V/cm,初始污泥厚度为2.25 cm,此条件下得到的污泥含固率为48.82%(预测值为48.45%)。方差分析结果表明,回归模型达到显著水平,在研究区域(初始污泥含固率:5%~10%、初始电压梯度12~30 V/cm、初始污泥厚度:1~2.5 cm)内拟合较好,与实验结果吻合度较高。

Parameters optimization of sludge electroosmosis dewatering through response surface methodology

The solid content of mud cake being as the index of sludge dewaterability, the response surface methodology (RSM) was used to study the optimal parameters of electroos-mosis sludge. The results indicated that the optimum initial sludge solid content, initial voltage gradient, and initial thickness of sludge were 8.58%, 20.88 V/cm, 2.25 cm, respectively, solid content of mud cake was 48.82%(forecast value was 48.45%) under the optimal parameters. RSM analysis of variance results showed that regression model reached significant level, fitted well in the study area (the initial sludge solid content: 5%~10%, the initial voltage gradient: 12~30 V/cm, the initial thickness of sludge: 1~2.5 cm), and having higher coincide degree with the experimental results.