阳离子淀粉复合聚铁基絮凝剂的制备及絮凝效果研究

Preparation and Flocculation Cationic Starch Polymer Composite Flocculant Iron Machine Effect

以聚铁基化合物为基本单元,用3-氯-2-羟丙基氯化铵(CHPTA)为醚化剂制备阳离子淀粉(CS),修饰聚合硫酸铁(PFS)和聚硅酸铝铁(PSAF),制得两种聚铁基-淀粉复合絮凝剂,即PFS+CS和PSAF+CS。并通过红外光谱(IR)对絮凝剂进行了结构表征;通过对废水絮凝前后COD_(Gr)及Zn^(2+)含量测定,探讨了絮凝剂的絮凝效果。结论表明,聚铁基-阳离子改性淀粉复合絮凝剂的絮凝效果较好。

Poly iron-based compound as the basic unit, with 3-chloro-2-hydroxypropyl ammonium chloride （CHPTA） ether agent prepared cationic starch （CS）, modified PFS （PFS） and poly aluminum silicate iron （PSAF）, to obtain two kinds of iron- based poly-starch composite flocculant, namely PFS＋CS and PSAF＋CS.And by infrared spectroscopy （IR） for flocculants were characterized ; wastewater flocculation around CODGr and Zn^2＋ content measured by, discussed flocculation flocculant.Conclusions show that the iron-based poly-flocculation effect of cationic modified starch composite flocculant better.