【摘要】 研究了原水pH的变化对超滤膜过滤性能的影响.原水pH的下降减小了有机物的表观尺寸并增强了其疏水性,加强了超滤膜吸附有机物的能力,但同时造成了严重的膜污染.在混凝作为预处理的情况下,pH的下降有助于混凝去除有机物,因而有利于减轻膜污染.更多还原

【Abstract】 The aim of this investigation was to study the effect of pH variation on performance of ultrafiltration.The reduction in pH of raw water can decrease apparent size and enhance the hydrophobic for organics,hence the ability of adsorption onto membrane was enhanced and severe fouling was resulted.When the coagulation was used as pretreatment,the reduction in pH was useful for removal organics and mitigation of fouling.更多还原