微絮凝-超滤工艺处理电镀废水的工艺参数研究

Study of the Microflocculation-ultrafiltration Technology During the Processing of Electroplating Waste Water

絮凝和膜分离在水处理领域中日趋成熟,这为工业废水的深度处理提供了技术支撑。鉴于此,本文主要研究了微絮凝在超滤处理电镀废水过程中的影响,重点考察了PAC絮凝剂的投加量对膜通量、浊度去除率、UV_(254)去除率等影响,结果表明,PAC最佳投入量50 mg/L及与PAM复配质量比50:1时,超滤性能最佳。结合SDI、COD_(Cr)、pH等指标,验证了微絮凝-超滤耦合作为反渗透深度处理电镀废水预处理工艺的可行性。

Flocculation and membrane separation technology are becoming increasingly mature in the field of water treatment,providing technical support for the advanced treatment of industrial wastewater.Therefore,this article mainly studied the influence of micro flocculation process in the ultrafiltration treatment of electroplating wastewater,focusing on the effects of the dosage of PAC flocculant on membrane flux,turbidity removal rate,UV_(254) removal rate,etc.The results showed that the optimal dosage of PAC at 50 mg/L and the mass ratio of PAC to PAM at 50:1 resulted in the best ultrafiltration performance.Combining indicators such as SDI,COD_(Cr) and pH,the feasibility of micro flocculation ultrafiltration coupling as a pretreatment process for reverse osmosis deep treatment of electroplating wastewater was verified.