预臭氧氧化对聚硅酸铝铁絮凝效果及絮体形态影响研究  

Study on the effect of preozonation on the flocculation capacity and floc structure of polysilicate aluminum ferric

作　　者：吴春笃[1,2] 段明飞[2] 解清杰[2] 

机构地区：[1]扬州环境资源职业技术学院,江苏扬州225127 [2]江苏大学环境学院,江苏镇江212013

出　　处：《工业水处理》2011年第6期21-23,共3页Industrial Water Treatment

基　　金：国家"十一五"重大水专项资助项目(2008ZX07317-001)

摘　　要：从絮体的分形结构、粒度、有效密度等微观特性出发,研究预臭氧氧化对聚硅酸铝铁絮凝效果和絮体形态的影响。结果表明,臭氧具有良好的助凝作用,并存在臭氧最佳投加量。一定浓度的臭氧能增大混凝过程中絮体的粒径,改变絮体的形态,使其更加规整,从而使分形维数发生变化。同时,适当的预臭氧氧化能增大絮体的有效密度,使絮体更加密实,提高沉降性能。The effect of preozonation on flocculation capacity and floc morphology of polyaluminum ferric silicate has been studied,with the emphasis on the micro-characteristics,such as fractal structure,granule size,effective density,etc.of the floc.The results show that ozone has very good coagulant capacity,having optimal dosing quantity.A certain concentration of ozone can increase the granule size of floc in the process of flocculation,change the floc morphology,making it more standarized,so as to make the fractal dimension change.At the same time,the appropriate preozonation can increase the effective density of the floc,making the floc more dense and improving its sedimentation capacity.

关 键 词：预臭氧氧化 聚硅酸铝铁 絮体 

分 类 号：X703.1[环境科学与工程—环境工程]