分别考察了焙烧温度、硫酸浓度和煤系高岭土用量对城市生活污水中磷的吸附率的影响,在此条件下又考察了吸附等温线、吸附动力学和吸附热力学.结果表明,当焙烧温度为700 ℃,硫酸浓度为70%,煤系高岭土用量为0.75g(每50 mL污水)时,煤系高岭土对城市生活污水中磷元素的吸附率分别达到最大.通过对吸附等温线、吸附动力学曲线和吸附热力学曲线的处理,得出硫酸活化煤系高岭土对磷的吸附行为更符合Freundlich模型,液膜扩散是其对磷吸附的主控步骤,且吸附是一个放热过程.%The effect that the phosphorus in the municipal wastewater was adsorpted by roasting temperature, sulfuric acid concentration and coal-measures kaoline consumption was studied, then the adsorption isothermal, adsorption dynamics and adsorption thermodynamic were studied too. The result showed when the roasting temperature was 700 C the sulfuric acid concentration was 70％ and the coal-measures kaoline consumption was 0. 75 g (per 50 mL water), the adsorption rate could be arrived the highest respectively. The action that the phosphorus in the municipal wastewater was adsorpted by sulfuric acid-activated coal-measures kaoline more fitted in the Freundlich model. Kinetic analysis showed that the adsorption rate was mainly governed by liquid film diffusion, and the adsorption process released heat.
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