摘要
实验测定了平直叶轮动态混合絮凝器内絮团浓度的空间分布。结果表明,沿絮凝器半径方向,絮团浓度先是随半径的增大而增大,在达到某一最大值后则转而降低;在絮凝器的轴向,絮团浓度在叶轮上方附近存在极大值,在上下两侧,则逐渐降低;但在器壁附近,絮团浓度的轴向分布有所不同。文中运用沉降-扩散理论,结合絮凝器内的流体动力条件,对上述现象进行了合理解释。
Floc concentration distribution in a dynamic flocculator with a flat vane wheel was measured experimentally.The results showed that floc concentration increased with radius firstly and began to cut down at a certain position.A similar distribution was observed in the axial direction of the flocculator,i.e.the maximum concentration existed on the nearby plane where vane wheel occupied,but a difference took place in the zone near the wall. Both sedimentation and diffusion theories associated with fluid dynamic characteristics were applied to explain successfully the phenomena mentioned above.
出处
《过滤与分离》
CAS
2004年第2期5-7,17,共4页
Journal of Filtration & Separation
基金
国家自然科学基金资助项目(20276007)
关键词
絮凝
动态混合
浓度分布
flocculation
dynamic mixture
concentration distribution
