摘要：

采用2种新型重金属絮凝剂巯基乙酰化胺甲基聚丙烯酰胺（MAAPAM）和聚乙烯亚胺基黄原酸钠（PEX）处理含铜废水，分别考察了其单独和复配处理对废水中Cu²⁺的去除效果。结果表明，PEX和MAAPAM对不同Cu²⁺浓度的废水均具有良好的去除性能，且PEX对Cu²⁺的去除效果优于MAAPAM。当采用PEX和MAAPAM复配处理含Cu²⁺废水（Cu²⁺质量浓度为100 mg/L，pH为6.0）时，先投加340 mg/L的MAAPAM进行絮凝试验，在快搅2 min时投加10 mg/L的PEX继续搅拌，出水中Cu²⁺的剩余浓度可以满足排放标准要求，且具有较低的处理成本。

关键词: 高分子絮凝剂, 含铜废水, 螯合沉淀, 复配

Abstract:

Copper-containing wastewater was treated by two kinds of novel heavy metal flocculant, called mercaptoacetyl aminomethyl-polyacrylamide(MAAPAM) and polyethyleneimine-sodium xanthogenate(PEX), respectively. The removal effect of Cu²⁺ in wastewater was investigated by using two flocculants separately and in pairs. The results showed that PEX and MAAPAM had excellent performance for removing wastewater with different Cu²⁺ concentrations, and PEX had better removal effect on Cu²⁺ than MAAPAM. In the flocculation test, when 340 mg/L of MAAPAM was first added in the copper-containing wastewater with initial Cu²⁺ concentration of 100 mg/L at pH 6.0, and then 10 mg/L of PEX was added after stirring the mixture rapidly for 2 min, the residual concentration of Cu²⁺ in the effluent could meet the discharge standard and had lower treatment costs.

Key words: macromolecule flocculant, copper-containing wastewater, chelation precipetation, compound

中图分类号: 

• X703.1