【摘要】 实验室制备涂氧化钛的改性滤料,对微污染水进行强化过滤处理,结果表明:其去除浊度、有机物、藻细胞等污染物的能力要比普通石英砂滤料强:与涂氧化铁的改性滤料相比,二者去除浊度的能力相近,但涂氧化钛的改性滤料去除有机物、藻细胞的能力要强。根据改性滤料的除污机理,滤料去除浊度的能力与其表面电位和其结合有机物的能力有关;而去除有机物、藻细胞的能力主要与其表面晶格金属阳离子价数有关,金属离子价数越高,其结合有机物阴离子基团的摩尔数就多,去除有机物、藻细胞的能力就强。这为新型高效滤料的研制提供了方向。更多还原

【Abstract】 The modified media coated by titania was made in laboratory scale,and used to treat micro-polluted water in this study.The experiment results showed that its abitily of removing turbidity,organic pollutants,algae cells is higher than that of quartz media.Compared with modified media coated with iron oxide,of which the ability for removing turbidity is similar,but better for removing organic pollutants and algae cells.According to mechanism of removing pollutants,the ability for removing turbidity relates with both its surface electic potential and its ability of bonding with organics,and for removing organic pollutants and algae cells mainly relates with ionic valence of metal cation bound on its surface for mondified media,the higher ionic valence of metal cation is,the more amount of anionic group bound by metal cation,its ability to remve organic poullutants and algae cells is better.This achievement put forward to make a new filtration media.更多还原