粒径和pH值对EPRC除磷性能影响的试验研究  

Effects of the Particle Size and pH Value on EPRC in Phosphate Removal

作　　者：吴玲琳[1] 刘焱[1] 王世和[1] 张怡[1] 黄敏[1] 

机构地区：[1]东南大学市政工程系,南京210096

出　　处：《安全与环境工程》2008年第3期45-48,共4页Safety and Environmental Engineering

基　　金：江苏省太湖水污染治理科技专项项目(BS2007146)资助

摘　　要：研究了EPRC对磷素的吸附特征,考察了粒径和初始pH值对EPRC吸附性能的影响,分析了不同条件下EPRC的吸附过程。研究结果表明:随着粒径减小,EPRC对磷素的吸附量增大,吸附平衡时间缩短;溶液在酸性条件下的吸附速率较碱性条件快;反应过程中,溶液pH值先升高,达到最大值后再降低,最后达到平衡。The adsorption characteristics of phosphorus on EPRC was studied and the effect of particle size of EPRC and initial pH value on the phosphorus adsorption by EPRC was investigated. The results showed that the smaller the particle size of EPRC, the greater the adsorption capacity of EPRC to phosphorus, and the shorter the equilibrium time of adsorption. The adsorption velocity was the biggest when the initial pH value of the aqueous solution was acidic. In the reactor course, the pH value increased gradually at first, decreased when reaching the maximum, and, at a certain stage, achieved the balance.

关 键 词：EPRC 除磷 吸附 影响因素 

分 类 号：X703.1[环境科学与工程—环境工程]