【摘要】 采用纳滤对含铜废水进行试验研究,讨论了初始浓度、操作压力、运行时间、阴离子种类、浓差极化对处理效果的影响。试验结果表明NF90膜对含铜废水有良好的处理效果,去除率超过了98%,出水铜浓度低于2.0mg/L,根据污水综合排放标准(GB8978-1996),该试验中的含铜废水经纳滤处理后均可以达标排放;随着废液体积的浓缩,铜离子浓缩可达10倍以上,可回用于镀件漂洗,实现铜金属的再生利用。更多还原

【Abstract】 The experiments on cupric wastewater were conducted.The effects of the initial copper concentration,pressure,concentration polarization and different anions on the performance of nanofiltration membranes were investigated.The experimental results showed that the removal efficiency of cupric was higher than 98% and its concentrations in permeation liquid were lower than 2.0mg/L,meeting the Discharge Standard(GB8978—1996) or using as water for washing electroplated products,which verified that nanofiltration is an effective method for the removal of copper;By the condense of cupric solution,copper enrichment reached to tenfold and realize the hope of regenerating the copper.更多还原