壳聚糖改性活性炭纤维毡处理含铜废水的研究

Research on the chitosan-modified activated carbon fiber felt for the treatment of copper-containing wastewater

采用壳聚糖改性活性炭纤维毡处理含铜模拟废水,考察了其对Cu^(2+)的去除效果及电化学再生效果。吸附试验结果表明,当pH=3,温度为30℃,Cu^(2+)初始质量浓度为100 mg/L,吸附时间为8 h时,出水Cu^(2+)﹤0.5 mg/L,达到《污水综合排放标准》(GB 8978—1996)一级排放标准要求。电化学再生试验结果表明,在优化条件下,经再生的壳聚糖改性活性炭纤维毡对Cu^(2+)的去除率达72.39%。

The chitosan-modified activated carbon fiber felt has been used for the treatment of copper-containing wastewater,and its removing effect on Cu^2+and electrochemical regenerating effect investigated. The adsorption experiment results show that when pH=3,temperature 30 ℃,Cu^2+initial mass concentration 100 mg/L,and adsorption time 8 h,the effluent concentration of Cu^2+is less than 0.5 mg/L,reaching the first-level discharge standard specified in the Integrated Wastewater Discharge Standard(GB 8978-1996). The electrochemical regeneration experiment results show that under optimized conditions,the removing rate of the regenerated chitosan-modified activated carbon fiber felt on Cu^2+reaches 72.39%.