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电解浮选用于活性污泥固液分离的正交实验研究

Keywords: 电解浮选,固液分离,正交实验,SS去除率

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Abstract:

本研究旨在探索用电解浮选进行活性污泥固液分离的可行性。研究通过小试试验确定电解浮选进行活性污泥固液分离的适宜工艺条件,在装有Ti/RuO2-IrO2-TiO2阳极、Ti阴极的电解浮选槽中进行了活性污泥固液分离的研究,针对影响电解气浮工艺的4个主要影响因素(水力停留时间、接触室电流密度、分离区电流密度和接触室极板间距)及3个合适的水平进行正交试验。结果表明,分离区电流密度是最主要影响因素。当进水SS浓度为1687mg/L时,在停留时间为25min,接触室电流密度为5mA/cm2,分离区电流密度为4mA/cm2,极板间距为3mm的条件下进行电解浮选验证性试验,悬浮固体颗粒物去除率较高,去除率为98.9%,能耗0.54kWh/m3。

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