摘要：

针对目前太湖地区日益提高的电镀废水排放标准,提出采用混凝-微滤膜过滤组合工艺来去除电镀废水中的铜和镍。从工程应用的角度出发,研究并探讨FeSO₄混凝-微滤膜法去除电镀废水中铜、镍时的影响因素,并确定其最佳运行参数,考察该组合工艺的实用性。所取电镀废水中Cu²⁺质量浓度为57.6 mg/L,Ni²⁺质量浓度为42.0 mg/L,采用FeSO₄混凝剂及PVDF微滤膜处理后,出水中Cu²⁺和Ni²⁺质量浓度为0.15、0.87 mg/L,低于国家《污水综合排放标准》一级排放标准要求,同时具有较强的经济适用性。

关键词: 混凝, 微滤, 电镀废水

Abstract:

For the increasingly elevated electroplating wastewater discharge standard in Tai Lake area, coagulantmicrofiltration membrane filtration combined process has been used for removing copper and nickel from electroplating wastewater. From the angle of engineering application,the influential factors of FeSO₄ coagulant -microfiltration membrane combined process are studied and discussed,and the most optimum running parameters are confirmed,and its practicability is investigated. The concentration of Cu²⁺ in electroplating wastewater sample is 57.6 mg/L,and that of Ni²⁺is 42.0 mg/L. The concentration of copper and nickel in outflow are changed to 0.15 mg/L and 0.87 mg/L respectively,after treated by FeSO₄ coagulant and PVDF microfiltration membrane. They are both lower than the first class of Wastewater Comprehensive Discharge Standard,and the process has relatively strong economic applicability.

Key words: coagulant, microfiltration, electroplating wastewater

中图分类号: 

• X703.1