作　　者： ; ; ; ;

机构地区： 广东工业大学

出　　处： 《中国给水排水》 2004年第11期52-54,共3页

摘　　要： 　处理含沙量在20～30kg/m3以上的高浊水时须采用高分子絮凝剂,然而对架桥絮体的构造特征却知之甚少,为此采用沉降及图像分析技术,探讨了含沙高浊水架桥絮体的分形结构特征。结果表明,稳态絮体具有多孔、开放的分形结构,渗透率较大。这种分形构造对絮体的混凝及沉降性能影响显著,质量分维值不同则沉速差异较大。 High molecular flocculant shall be used for treatment of high turbid water with slit content over 20-30 kg/m^3,but little was known about the structure of bridging flocculated aggregates.The fractal structure of bridging flocculated aggregates in high turbid water with slit content was discussed by using settling and image analysis technology.The result shows that the flocculated aggregates at steady state are porous and opened in fractal structure with larger infiltration rate.This fractal structure has significant impact on coagulation and settling performance of flocculated aggregates,and settling velocity is different greatly at various mass fractal dimensions.

关 键 词： 含沙高浊水 架桥絮体 质量分形

领　　域： [建筑科学]