粘土矿胶粒及其含富里酸悬浊体系的电动特性
ELECTROKINETIC PROPERTIES OF CLAYORE AND AFFECT BY FA IN SUSPENSION
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摘要: 本文主要研究了氯化铝(AC)和聚合氯化铝(PAC)凝聚二氧化硅(S)、高岭土(G)和蒙脱土(M)胶粒,以及它们分别与含富里酸悬浊体系的电动特性及其影响因素.实验结果表明,在投加铝絮凝剂后的胶体颗粒凝聚絮凝过程中,胶体颗粒的负电位值迅速降低并变号,这种电中和、吸附凝聚作用取决于所加絮凝剂的特性、悬浊体系中胶体颗粒的表面积及其结构特性.天然有机富里酸(FA)对悬浊体系中胶体颗粒的凝聚具有明显的影响.Abstract: Electrokinetic properties and influence factor of coagulating silicon dioxide, kaolin and mnot-morillonite colloidal particles by aluminium chloride (AC) and polyaluminium chloride (PAC) were studied in this paper, the reults showed that the negative Zeta electric potential changed into positive sign in coagulating of colloidal particles by AC and PAC. The coagulating character was affected by added flocculent, superficies and colloidal particles structure. Fulvic acid had obvious effects for coagulating of colloidal particles.
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Key words:
- colloidal particle /
- fulvic acid /
- flocculent electrokinetic property /
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