微污染矿井水中微絮体的形成及分形特征  

Fractal characteristics of forming micro-flocs in micro-polluted mining water treatment

作　　者：范荣桂[1] 邓岚[1] 朱东南[1] 

机构地区：[1]辽宁工程技术大学环境科学与工程学院,阜新123000

出　　处：《环境工程学报》2013年第1期214-220,共7页Chinese Journal of Environmental Engineering

基　　金：辽宁省教育厅项目(L2010169);煤炭协会煤炭科研计划项目(MTKJ2012-309);辽宁工程技术大学校基金项目(SCDy2012009)

摘　　要：利用分形理论阐述了微污染矿井水中微絮体形成的分形生长特征,考察了微絮体形成过程中的影响因素,探讨了微絮凝机理,利用絮体的分形维数表征各影响因素对微絮体形态的作用结果,结果表明,微絮体形态与其分形维数之间具有良好的相关性,且分形维数越大,微絮体更加紧实,越易于沉降,滤后水的浊度越小;同时考察了微量铁锰离子对微絮体形态的影响,为微絮凝深床过滤工艺参数的改进提出了建议。The fractal theory was used to expound the fractal characteristics of the forming micro-flocs in micro-polluted mines water treatment process. The several affecting factors in the formation process of micro-floes were studied. The floeeulation mechanism was also discussed. Meanwhile, the fraetal dimension was used to present the characterization of micro-floes forming in various affecting factors. The results showed that there was close relation between micro-floes forming and fraetal dimension. During floeculation, the larger the size of frac- tal dimension, the lower the turbidity of filtered water. It was easy to settle when the micro-floes were more tight. The fractal characteristics of micro floes forming were affected by the trace iron and manganese ions. It was useful to improve efficiency of the micro-floceulation deep bed filtration process.

关 键 词：微絮体 分形特征 微絮凝时间 深床过滤工艺 

分 类 号：X703.1[环境科学与工程—环境工程]