偶联剂修饰伊利石处理含Cu2+生产废水

摘要

Using amino-silane coupling agent KH550 for the modification of illite crude ore,the treatment effect of modified illite on the wastewater containing Cu2+has been researched. The results show that the removing rate of Cu2+can reach 99.5%,when 1.7 g of modified illite is added to 50 mL of wastewater containing Cu2+whose mass concentration is 194.65 mg/L.The residual Cu2+mass concentration is 0.97 mg/L,achieving the"Discharge Standard of Industrial Pollutants for Copper,Cobalt,Nickel"(GB 25467—2010).The adsorption process of Cu2+by modified illite is mainly chemical adsorption.%采用氨基硅烷偶联剂KH550对伊利石原矿进行改性,研究了改性伊利石对某企业含铜废水的处理效果.结果表明:在50 mL Cu2+质量浓度为194.65 mg/L 的含铜废水中投加1.7 g 的改性伊利石,Cu2+去除率可达到99.5%,废水中剩余Cu2+质量浓度为0.97 mg/L,达到《铜、钴、镍工业污染源排放标准》(GB 25467—2010)的铜排放标准要求.改性伊利石对Cu2+的吸附过程以化学吸附为主.