摘要
研究了改性滤料和活性炭去除有机物的分子量分布特性,以及二者结合使用时去除有机物的特性.研究结果表明:涂铁铝砂对水中的有机物有很强的吸附作用,0.45μm膜过滤后总有机物紫外消光值AUV254从0.1 cm-1降到0.055 cm-1,去除率达到45%.其中对分子量大于1×103u的有机物去除效果非常明显,去除率都超过了70%.而活性炭对小分子有机物有很好的去除能力,将涂铁铝砂和活性炭联合使用,可使有机物的去除率增加50%.在实际工程中,要根据原水水质来选择合适的处理工艺.
Presented in the paper is a study of molecular weight distribution of organic matter and the removal of organic matter by using coated filter media and activated carbon in combination. Study shows that coated filter media can effectively remove organic matter. The organic matter UV254 reduces from 0.1 cm^- 1 to 0.05 cm^- 1 and the removing percentage reaches 45 % when the coated filter media is used. For the organic matter with a molecular weight greater than lk, the removing percentage even exceeds 70 %. However, activated carbon has an eminent effect on removing the organic matter with small molecular weight. Test results show that activated carbon and coated filter media are complementary for removing organic matter. The removal is more effective when activated carbon is used along with coated filter media, since the amount of organic matter in the water removed by the coaction of activated carbon and coated filter media increases by 50 %. It must be emphasized in engineering practice that the treatment process for removing organic matter needs to be properly devised in advance according to the real quality of water resources, especially the molecular weight distribution of organic matter in the water.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第6期766-769,共4页
Journal of Tongji University:Natural Science
基金
国家"八六三"高技术研究发展计划资助项目(2002AA601130)
国家科技攻关计划资助项目(2003BA808A17)
关键词
改性滤料
有机物
分子量分布
活性炭
coated filter media
organic matter
molecular weight distribution
activated carbon
