动态渗透压力法研究水处理滤料的润湿性  

The wettability of water treatment filter media measured by dynamic osmotic pressure

作　　者：何应东[1] 常青[1] 未碧贵[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070

出　　处：《环境科学学报》2009年第3期555-560,共6页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金项目(No.50578072)~~

摘　　要：润湿性是水处理滤料的一个十分重要的表面性质.以Washburn方程为原理,用动态渗透压力法研究了无烟煤、铝矾土陶瓷及磁铁矿滤料的亲油亲水润湿性.实验结果表明,方法的重现性较好,误差在10%以内.当滤料的粒径范围在0.6～0.9mm之间时,以该法测得无烟煤、铝矾土陶瓷及磁铁矿滤料的亲油亲水比(LHR)值依次为2.511、1.748和1.317,说明无烟煤滤料的亲油性最好,铝矾土陶瓷次之,而磁铁矿的亲油性最差.XPS和FTIR分析结果表明,无烟煤、铝矾土陶瓷及磁铁矿滤料润湿性差别主要归因于其表面化学结构的不同.Wettability is a very important surface property of water treatment filter media. The lipophilic and hydrophilic properties of anthracite, bauxite ceramic and magnetite particles were studied by using a dynamic osmotic pressure method, which is based on the Washburn equation. The reproducibility of the dynamic osmotic pressure method was good, with lower than 10% error. When the particle size distribution was between 0.6 mm and 0.9 mm, the Lipophilic/Hydrophilic Ratios （LHR） of anthracite, bauxite ceramic and magnetite particles were 2. 511, 1. 748 and 1. 317 respectively, which shows that anthracite is the most lipophilic,and magnetite particles are the least lipophilic of these filter media. XPS and FTIR results show that the lipophilic and hydrophilic differences of anthracite, bauxite ceramic and magnetite particles could be ascribed to differences of their surface chemical structure.

关 键 词：动态渗透压力法 水处理滤料 润湿性 含油废水 亲油亲水比 

分 类 号：X703[环境科学与工程—环境工程]