【摘要】 研究了一种自来水厂铝盐污泥对水中磷的去除特性。吸附试验表明,铝盐污泥(Alum Sludge,AS)对磷的吸附符合Langmuir吸附等温方程,磷吸附容量高达12 500 mg/kg,其对磷的吸附随pH值的升高而降低,且随着AS和磷质量比的增加而增大。与单独使用混凝剂相比,在使用聚合氯化铝(PAC)混凝剂的同时加入AS能够提高磷的去除率,降低PAC的用量,AS能够强化对磷的去除效果。更多还原

【Abstract】 The removal characteristic of phosphorus from wastewater by alum sludge from waterworks was studied through adsorption test.The results showed that phosphorus adsorption by alum sludge(AS) fitted the Langmuir adsorption isotherm equation,and the adsorption capacity of phosphorus was up to 12 500 mg/kg,while phosphorus adsorption decreased with the increase of pH and went up with the increasing mass ratio of AS and phosphorus.Comparing with using coagulant individually,using polymeric aluminum chloride(PAC) and AS could improve the removal rate of phosphorus and reduce the amount of PAC,so AS could strengthen removal effect of phosphorus.更多还原