混凝工艺水力条件的优化与絮体尺寸特性的研究  

Optimization of hydrodynamic conditions in coagulation process and study of floc size characteristics

作　　者：刘百仓[1,2] 黄尔[2] 鲁金凤[3] 白玉华[4] 李涛[1] 杨国洪[2] 蒋文涛[1] 

机构地区：[1]四川大学建筑与环境学院,成都610065 [2]四川大学水力学与山区河流开发保护国家重点实验室,成都610065 [3]南开大学环境科学与工程学院,天津300071 [4]中国市政工程西南设计研究院,成都610081

出　　处：《环境工程学报》2010年第9期1968-1972,共5页Chinese Journal of Environmental Engineering

基　　金：水资源与水电工程科学国家重点实验室开放研究基金资助项目(2009B055);四川大学青年教师科研启动基金资助项目(2009SCU11046)

摘　　要：制造更优的混合和絮凝设备,其核心技术在于设备所提供的水力条件是否更加有利于絮体的形成、是否更加有利于水质处理效果的提高。以成都市府南河水为原水,在不同的快搅强度和不同的快搅时间下进行混凝杯罐实验,混凝剂为硫酸铝、氯化铁,采用激光粒度仪Mastersizer 2000测量絮体平均粒径随时间的变化过程,以去除浊度为目标,分析最优水力条件。实验得到如下结论:(1)快搅强度对氯化铁混凝剂水质处理效果有着明显的影响,快搅时间对硫酸铝和氯化铁混凝剂水质处理效果均有明显影响;(2)以浊度为去除目标,对于硫酸铝通过实验确定快速搅拌强度为250 r/min时,快速搅拌时间为60 s时,水质处理效果最好;(3)以浊度为去除目标,对于氯化铁确定快速搅拌强度为300 r/min时,快速搅拌时间为60 s时,水质处理效果最好。In order to create better mixing and flocculation equipment,it＇s most crucial to provide more effective hydraulic equipment for the flocs formation and improvement of the water quality.The removal effects of turbidity from Funan River raw water in Chengdu with different rapid mix intensity and rapid mix time enhanced conventional water treatment by aluminum sulfate and ferric chloride were investigated,Mastersizer 2000 particle size analyzer was used to measure the average floc size changing with time as an index to analyze the optimal hydraulic condition.The conclusions of the experiment were as follows：（1） rapid mix intensity has a significant influence on water treatment quality by ferric chloride coagulant,rapid mix time has a strong influence on the final water treatment results by aluminum sulfate or ferric chloride coagulant;（2） taking turbidity as target index,it＇s determined through the experiment that the best water quality could be obtained under rapid mix intensity of 250 r/min and the rapid mix time of 60 s by aluminum sulfate;（3） taking turbidity as target index,it＇s determined through the experiment that the best water quality could be obtained under rapid mix intensity of 300 r/min and the rapid mix time of 60 s by ferric chloride.

关 键 词：微污染水 强化混凝 水力条件 絮体 破碎 

分 类 号：TU991.2[建筑科学—市政工程]