波纹斜槽板沉降器中的旋流絮凝特性

介绍了一种新型的快速波纹斜槽板沉降器,从理论上分析了波纹斜槽板中旋流的形成机制,推导出了斜槽区旋流絮凝反应速度的表达式,并通过实验研究了悬浮液流经波纹斜槽的絮凝规律,经数据回归得到了相应的絮凝反应方程.文中还讨论了流体流速对悬浮颗粒在波纹槽中的絮凝度的影响以及旋流絮凝作用对絮凝体压缩度的影响.实验结果表明,当流速小于30mm/s时,絮凝速度常数k平均达0.002 24.

Vortex Flocculation in Settling Clarifier with Corrugated Inclined Trough

A novel rapid settling clarifier with corrugated inclined trough was introduced in this paper.The vortex flow inside the inclined trough was theoretically analyzed,and a formula was deduced to determine the flocculation rate caused by the vortex flow.Then,an experiment was performed to investigate the flocculation regularity of suspension flowing through the trough.Moreover,a model that accords with the flocculation was regressed with the experimental data.The variation of the flocculation constant with the flow velocity and the effect of flocculation on the compressibility of the flocs were finally discussed.It is found that,at a flow velocity of less than 30 mm/s,the measured mean flocculation constant reaches 0.002 24.