摘要
为了去除电路板废水中的NO_(3)^(-)′N、NH_(4)^(+)—N、TP、COD及Cu^(2+)从而最终实现废水的达标排放,选用铁碳、活性炭及天然沸石进行了静态实验与动态实验.结果表明:(1)静态实验最佳运行参数为:温度25℃,铁碳投加量450 g/L,活性炭投加量45 g/L,沸石投加量140 g/L,铁碳段反应时间90 min,活性炭段反应时间90 min,沸石段反应时间50 min,工艺总水力停留时间230 min.在该条件下,工艺对NO_(3)^(-)—N、NH_(4)^(+)—N、TP、COD与Cu^(2+)的去除率分别达到81.9%,92.3%,87.6%,67.2%与96.2%.(2)在80 d的连续流动态实验中,NO_(3)^(-)—N、NH_(4)^(+)—N、TP、COD与Cu^(2+)的平均去除率达到69.2%,78.3%,82.3%,62.4%和94.8%.铁碳耦合天然材料工艺处理电路板生产废水表现优异.
To achieve compliant discharge standards for wastewater from circuit board manufacturing,which contains NO_(3)^(-)—N,NH_(4)^(+)—N,TP,COD,and Cu^(2+),static and dynamic experiments were conducted using a combination of iron-carbon,activated carbon,and natural zeolites.(1)The results of static experiments showed that the optimal operating parameters were:temperature 25℃,mass ratiOof iron carbon to wastewater 1∶2.5,dosage of activated carbon 45 g/L,dosage of zeolite 140 g/L,reaction time of 90 min for the iron carbon section,90 min for the activated carbon section,50 min for the zeolite section,and the to tal process hydraulic retention time of 230.Under these conditions,the removal rates of NO_(3)^(-)—N,NH_(4)^(+)—N,TP,COD,and Cu^(2+)reached 81.9%,92.3%,87.6%,67.2%,and 96.2%,respectively.(2)In the 80-day continuous flow dynamic experiment,the averageremoval rates of NO_(3)^(-)—N,NH_(4)^(+)—N,TP,COD and Cu^(2+)reached 69.2%,78.3%,82.3%,62.4%and 94.8%.Iron-carbon coupled natural materials process for the treatment of printed circuit board production wastewater has excellent performance and provides a new idea for the treatment of wastewater from multi-pollutant systems.
作者
于宏扬
杨鑫
林山杉
YU Hongyang;YANG Xin;LIN Shanshan(School of Environment,Northeast Normal University,Changchun 130117,China)
出处
《东北师大学报(自然科学版)》
北大核心
2025年第2期135-141,共7页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(41772236).
关键词
电路板生产废水
铁碳微电解
活性炭
天然沸石
circuit board production wastewater
iron-carbon micro-electrolysis
activated carbon
natural zeolite
