浮沉池中斜板装置对气浮运行效果的影响研究

Effect of Inclined Plates on Flotation Performance in Flotation/Sedimentation Tank

以松花江水为原水,研究了浮沉池内部侧向流斜板装置对气浮运行效果的影响。试验结果表明,斜板装置对气浮净水效果具有一定的不利影响:对于低浊水基本无影响;随着原水浊度和浮渣层厚度的增加,不利影响略有增加;加入斜板装置后落渣现象严重,排渣周期有缩短趋势。由于气浮分离区上部固有的分层流结构受斜板装置的影响较小,因此对有机污染物的去除效果影响不大。

Taking raw water from Songhua River as research object, the influence of the inclined plates in the flotation/sedimentation tank on the flotation performance was studied. The results show that the inclined plates in the tank have a certain adverse influence on the flotation performance. There is no influence on floated water quality when the raw water turbidity is low. However, the adverse influence increases with increasing of raw water turbidity and the floated layer thickness. The frequency of float discharge increases after the addition of the inclined plates. The removal efficiency of organic contaminants is not influenced much because the stratified flow structure in the separation zone of the flotation tank is not influenced much by the inclined plates.