高锰酸钾与粉末活性炭联用工艺絮体粒径变化规律的研究  

THE CHARACTERISTICS OF FLOC SIZE VARIATION UNDER THE APPLICATION OF POTASSIUM PERMANGANATE AND POWDERED ACTIVATED CARBON

作　　者：刘百仓[1,2] 许加权[1] 李俊俊[1] 郑哲[1] 林琳[1] 熊涛[1] 

机构地区：[1]四川大学建筑与环境学院,四川成都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,四川成都610065

出　　处：《水处理技术》2011年第4期29-32,56,共5页Technology of Water Treatment

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);中央高校基本科研业务费四川大学青年教师科研启动基金资助项目(2009SCU11046)

摘　　要：以河水为原水,在选择适宜水力条件的基础上,考察了混凝剂为硫酸铝(AS)、氯化铁(FeCl3),投加粉末活性炭(PAC)和高锰酸钾(KMnO4)强化常规处理工艺时絮体粒径的变化规律。试验中采用激光粒度仪在线多次测量絮体平均粒径,然后利用软件对数据进行处理,考察了不同药剂投量工况组合时浊度、UV254的变化情况。试验结果表明,投加不同量的PAC后,原水的粒径变化不大,但在PAC投量不同的条件下投加相同量混凝剂后,形成的絮体粒径差异明显;在PAC投量与混凝剂投量不变的条件下,投加不同量的KMnO4对絮体粒径的影响也较大;相同条件下,使用50 mg·L-1 FeCl3形成的絮体比60 mg·L-1 AS的大、絮体增长达到稳定所需的时间更短。The characteristics offloc size variation under the application of the aluminum sulfate （AS）, ferric chloride （FeCl3） to river water （raw water） based on the choice of suitable hydraulic conditions with powdered activated carbon （PAC）, potassium permanganate （KMnO4） added to enhance conventional treatment process were investigated. Particle size analyzer was used to measure averaged floc size online, then the origin software was used to analyze the measurement results. The turbidity, and UV254 changes were also investigated. Experimental results show that： after dosing different amounts of PAC, the particle size of raw water changed little, but after the coagulant was added in the water under different dose of PAC, the floc size vary significantly; Different amounts of KmnO4 on the impact of floc size is also significant under the PAC dosage and coagulant dosage unchanged; Under the same conditions, utilization coagulant ofSO mg. L^-1 FeC13 can form bigger floc than that of 60 mg. L^-1 AS, and reach a stable value of the floc size in shorter time.

关 键 词：强化混凝 絮体粒径 高锰酸钾 粉末活性炭 

分 类 号：TQ424[化学工程] TU991.22[建筑科学—市政工程]