水动力学条件对絮体形成的影响  

Effect of hydrodynamic condition on floc formation

作　　者：武道吉[1] 马军[1] 谭凤训[2] 

机构地区：[1]哈尔滨工业大学环境科学与工程博士后流动站,哈尔滨150001 [2]山东建筑大学市政与环境学院,济南250101

出　　处：《工业用水与废水》2007年第1期4-8,共5页Industrial Water & Wastewater

基　　金：国家自然科学基金资助项目(59825106);山东省中青年科学家基金资助项目(2004BS08012)

摘　　要：利用颗粒运动方程,分析颗粒运动导致的碰撞絮凝,提出涡旋惯性离心力和剪切力是颗粒接触絮凝的主要动力因素,其中涡旋剪切力是主导动力;湍流过渡区控制絮体的成长尺度和密度;并讨论了提高絮凝效率的技术途径。Based on the particle motion equations, the contract flocculation caused by the motion of granular was analyzed. It was proposed that, bortex shear force and inertial centrifugal force were the main driven force causing particle contact flocculation, and the vortex shear force was the dominant kinetic factor; the floc diameter and density was controlled by transition zone of the turbulent flow; meanwhile, the technology for improving flocculation efficiency was also discussed.

关 键 词：水动力学 絮凝颗粒 接触絮凝 

分 类 号：TQ085[化学工程]