In order to seek cheap and effective adsorbent, Hangjin 2# clay was improved by polyaluminium sulphate to prepare a complex adsorbent which was used to adsorb the phosphate in domestic waste water. The influence of phosphate concentration, pH value of solution, and temperature on adsorption capacity was studied. The results show that the adsorption capacity and equilibrium time increase, and the removal rate of phosphate decreases while the initial concentration of phosphorus increases. The best removal rate is obtained at pH value from 6 to 10. With the increasing of temperature, the adsorption capacity decreases. The adsorption was fitted by the Temkin equation.Hangjin 2# clay-polyaluminium sulfate complex adsorbent is an excellent phosphate sorbent.%以寻求廉价而高效的吸附材料为目的,研究了利用聚合硫酸铝改性杭锦2#土制备复合吸附剂的方法.用此吸附剂对生活废水中的磷酸根进行吸附,讨论了磷酸根浓度、溶液pH值、温度对吸附容量的影响.结果表明:增加初始磷浓度,去除率下降,吸附量和吸附平衡时间增加;溶液pH值为6-10时复合吸附剂对磷酸根的去除效果最好;吸附能力随温度的升高而减小;Temkin方程更适合描述磷酸根在杭锦2#土-聚合硫酸铝复合吸附剂上的吸附行为,杭锦2#土复合吸附剂是良好的磷吸附剂.
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