School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240 Shanghai, China.
Bioresour Technol. 2010 Jun;101(12):4285-90. doi: 10.1016/j.biortech.2009.12.147. Epub 2010 Feb 11.
The potential benefits of electrolysis-conditioned sludge dewatering treatment were investigated in this paper. Focuses were placed on effectiveness and factors affecting such novel application of electrolysis process. Experiments have demonstrated that a significant improvement of sludge dewaterability evaluated by capillary suction time (CST) could be obtained at a relative low value of electrolysis voltage. A Box-Behnken experimental design based on the response surface methodology (RSM) was applied to evaluate the optimum of the influencing variables. The optimal values for electrolysis voltage, electrode distance and electrolysis time are 21 V, 5 cm and 12 min, respectively, at which the CST reduction efficiency of 18.8+/-3.1% could be achieved, this agreed with that predicted by an established polynomial model in this study.
本文研究了电解条件下污泥脱水处理的潜在好处。重点放在该电解工艺新应用的有效性和影响因素上。实验表明，在相对较低的电解电压下，可以显著提高污泥的脱水性能，用毛细吸水时间（CST）来评估。基于响应面法（RSM）的 Box-Behnken 实验设计用于评估影响变量的最佳值。电解电压、电极距离和电解时间的最佳值分别为 21V、5cm 和 12min，此时 CST 减少效率可达 18.8+/-3.1%，与本研究中建立的多项式模型预测值一致。
