丙烯酰胺-丙烯酸-丙烯羟肟酸共聚物乳液脱除电镀废水中的重金属离子

采用反相乳液聚合法合成了丙烯酰胺(AM)-丙烯酸(AA)-丙烯羟肟酸(AHA)共聚物乳液.考察了该共聚物配方中丙烯羟肟酸用量,共聚物乳液的投量和pH值对电镀废水中重金属离子的脱除效果.结果表明:pH=10,丙烯羟肟酸在共聚物乳液中的用量＞15%,共聚物乳液的投量为20～30 mg/L时,脱除电镀废水中重金属离子的效果最好,Cr、Cu、Ni和Zn等重金属离子的脱去率＞99.5%,处理后的水中每种重金属离子浓度＜0.2mg/L.

Removal of heavy metal ions in electroplating wastewater by AM-AA-AHA copolymer emulsion

Copolymers of acrylamide(AM)- acrylic acid( AA)- propylene hydroxamic acid (AHA) were synthesised by inverse emulsion polymerization. It is investigated the impact of propylene hydroxamic acid content in copolymer, copolymer dosage and pH in electroplating wastewater to the metal ions removal effect. The results showed: pH = 10. propylene hydroxamic acid content in the polymer≥ 10%, amount of the copolymer 20-30 mg/L in electroplating wastewater, removal of the metal ions is most effective, chromium, copper, nickel and zinc metal ions removal ratio ≥99.5%, the concentration of any ion ≤0.2 mg/L in treated water.