Impact of dynamic distribution of floc particles on flocculation effect

• 作 者: NAN Jun HE Weipeng Song Xinin
• 机 构: State Key Laboratory of Urban Water Resource and Environment,School of Municipal and Environmental E
• 出 处: 环境科学学报(英文版)
• 发表日期: 2009年8期
• 关键词: particle size distribution particle counter index weight flocculation process

Polyaluminum chloride (PAC) was used as coagulant and suspended particles in kaolin water. Online instruments including turbidimeter and particle counter were used to monitor the flocculation process. An evaluation model for demonstrating the impact on the flocculation effect was established based on the multiple linear regression analysis method. The parameter of the index weight of channels quantitatively described how the variation of floc particle population in different size ranges cause the decrement of turbidity. The study showed that the floc particles in different size ranges contributed differently to the decrement of turbidity and that the index weight of channel could excellently indicate the impact degree of floc particles dynamic distribution on flocculation effect. Therefore, the parameter may significantly benefit the development of coagulation and sedimentation techniques as well as the optimal coagulant selection.