微污染矿井水中微絮体的形成及分形特征

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.

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

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-flocs were studied. The flocculation mechanism was also discussed. Meanwhile, the fractal dimension was used to present the characterization of micro-flocs forming in various affecting factors. The results showed that there was close relation between micro-flocs forming and fractal dimension. During flocculation, the larger the size of fractal dimension, the lower the turbidity of filtered water. It was easy to settle when the micro-flocs were more tight. The fractal characteristics of micro flocs forming were affected by the trace iron and manganese ions. It was useful to improve efficiency of the micro-flocculation deep bed filtration process.