絮凝过程中絮体分形及其分形维数的测定  

Fractal Floc During Flocculation Processes and the Finding of Fractal Dimension

作　　者：陆谢娟[1] 李孟[2] 唐友尧[1] 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]武汉理工大学土木工程与建筑学院,湖北武汉430070

出　　处：《华中科技大学学报（城市科学版）》2003年第3期46-49,共4页Journal of Huazhong University of Science and Technology

摘　　要：在用粒径为76μm以下粘土配制的原水和以1%硫酸铝作为混凝剂的混凝沉淀实验中,用电子显微镜和影像捕捉器观察到所形成的絮凝体具有自相似的分形特征,其中混凝剂在原水浊度为185mg/L时的最佳投药量为3.2mg/L,并计算出此时所形成的絮凝体的分形维数为2.0.During flocculation processes,the water is put up by the clay whose grain size is less than 76 μm,and the flocculating agent is aluminium sulphate in which concentration is one percent. The floc formed in flocculation processes has a fractal ,selfsimilar structure which is observed with microscope and electronscanning microscope. When the turbidity of the water is 185 mg/L,the best added quantity is 3.2 mg/L. At this time the fractal dimension of floc is calculated to be 2.0.

关 键 词：水处理 混凝剂 混凝 沉淀 絮凝 分形 分形维数 硫酸铝 

分 类 号：TU991.22[建筑科学—市政工程]