麦饭石矿物材料絮凝剂的制备及特性研究  

STUDY ON PREPARATION AND FLOCULATION EFFECT OF MAIFANITES

作　　者：王昶[1] 林妍[1] 豆宝娟[1] 谈玉琴 

机构地区：[1]天津科技大学海洋与环境学院,天津300457 [2]无锡金鑫集团,江苏无锡214121

出　　处：《环境工程》2016年第6期69-74,89,共7页Environmental Engineering

基　　金：天津市科委重大专项([2014]14ZCDGNC00097);天津市农委重大专项合作项目([2014]201404140)

摘　　要：利用矿物材料麦饭石高含铝量的组分特性,根据絮凝过程的基本原理,初次研制了具有特殊絮凝效果的无机絮凝剂。使用XRD分析仪和SEM扫描电镜对原材料和处理后的絮凝剂表面特性进行了表征分析,以水质的浊度和COD为处理目标函数,深入考察了投加量和p H的影响,得到了最佳的操作条件,并使用了Zeta电位仪,进一步探讨了絮凝前后水中Zeta电位对絮凝效果的影响。在投加量为600mg/L,p H为8时,污水浊度和COD去除率分别可以达到96.22%和82.50%,且絮凝过程具有矾花大、结构紧实、沉降速度快等特点。On the basis of the high aluminum content in mineral maifanites and principle of flocculation process,the inorganic flocculant was initial prepared. The surface properties of the raw and modified maifanites were characterized by using X-ray diffraction（ XRD） and scanning electron microscopy（ SEM）. Taking turbidity and chemical oxygen demand（ COD） as the processing objective function,the influence of flocculant dosage and p H were systematically investigated.At last,the Zeta potential was also determined after flocculation,and the effect of Zeta potential in water sample before and after flocculation was determined. The results showed that the optimum operating condition was in the dosage of600 mg / L,p H = 8. And the wasterwater turbidity and chemical oxygen demand（ COD） removal efficiency was 96. 22 %and 82. 50 %,respectively. The flocculation was proved to be practical for the quickly formed alum,dense structure and fast settlement.

关 键 词：矿物材料 絮凝剂 浊度 ZETA电位 

分 类 号：X703.5[环境科学与工程—环境工程]