聚二甲基二烯丙基氯化铵对景观水处理的影响

Influence of Poly-dimethyl Diallyl Ammonium Chloride(HCA) on Disposing Landscape Water

[目的]研究阳离子絮凝剂聚二甲基二烯丙基氯化铵(HCA)对景观水处理的影响。[方法]选取浊度、UV254、Zeta电位、叶绿素和残余铝作指标,研究HCA的助凝作用,并比较HCA助凝后形成的絮体强度与聚合氯化铝(PAC)、Al2(SO4)3处理后形成的絮体。[结果]PAC+HCA将景观水浊度降低至1.53 NTU,对UV254去除率为36%,出水叶绿素含量为9.85μg/L,溶解性残余铝为0.12 mg/L。HCA助凝效果明显,出水优于硫酸铝和PAC处理后的出水。二次搅拌表明,PAC+HCA处理后的絮体强度和再凝结能力明显强于PAC、Al2(SO4)3。[结论]PAC+HCA复合使用对景观水处理效果优于分别使用PAC和Al2(SO4)3。

[ Objective] The propose was to study the influence of cationic flocculants HCA on processing landscape water. [ Method] With turbidity, UV254, Zeta potential, chlorophyll and residual aluminum as indexes, the HCA coagulation was studied and the floc intensity formed after HCA coagulation aiding was compared with the floe formed after PCA and Al2 （ SO4 ） 3 processing. [ Result ] PAC ＋ HCA decreased the turbidity of landscape water to 1.53 NTU. Its UV254 removal rate was 36%, the effluent chlorophyll content was 9.85 μg/L and dissolved residual aluminum was 0.12 mg/L. The coagulation effect of HCA was obvious and its effluence was superior to that disposed with PAC and Al2（SO4）3. The secondary mixing indicated that the floc intensity and recuagulating ability after PAC ＋ HCA disposing were obviously stronger than that of PAC and Al2（SO4）3. [Conclusion] The effect of composed application of PAC ＋ HCA in disposing landscape water was superior to that of using PAC and Al2（SO4）3 respectively.