Both activity and stability of the catalyst can be improved in heterogeneous Fenton reaction,in particular,with no limitation for the working p H and no production of the sludge.In this work,a combination of catalyst ...Both activity and stability of the catalyst can be improved in heterogeneous Fenton reaction,in particular,with no limitation for the working p H and no production of the sludge.In this work,a combination of catalyst Cu_2O and pore-channel-dispersed H_2O_2is proposed to treat the pulp wastewater.Degradation degree of CODs in the wastewater was up to 77%in the ceramic membrane reactor using Cu_2O powder(2.0 g·L^(-1))and membranefeeding H_2O_2(0.8 ml·L^(-1))within 60 min.Evolution of·OH radical formation in the advanced oxidation process was analyzed with a fluorescent method.Utilization efficiency of H_2O_2was successfully enhanced by 10%with the membrane distributor.Further on,the catalyst recyclability was evaluated in a five-cycle test.The concentration of copper ions being dissolved in the treated water was monitored with ICP.After Cu_2O/H_2O_2(membrane)treatment the effluent is qualified to discharge with COD concentration lower than 15 mg·L^(-1)with regard to the national standard GB25467-2010.展开更多
研究了以水淬渣-累托石为吸附剂对含Cu2+的冶金废水进行处理。实验结果表明,在不调节含Cu2+冶金废水pH值的条件下,水淬渣与累托石质量比为3∶1,吸附剂用量为0.03 g/mL,作用时间为20 m in,温度为25℃(常温)时,Cu2+的去除率达99.8%,对Cu2...研究了以水淬渣-累托石为吸附剂对含Cu2+的冶金废水进行处理。实验结果表明,在不调节含Cu2+冶金废水pH值的条件下,水淬渣与累托石质量比为3∶1,吸附剂用量为0.03 g/mL,作用时间为20 m in,温度为25℃(常温)时,Cu2+的去除率达99.8%,对Cu2+的吸附容量为0.302 mg/g,处理后的水符合国家污水综合排放标准(GB8978-1996)一级标准。水淬渣-累托石混合吸附剂比水淬渣或累托石单一吸附剂除Cu2+效果要好。展开更多
基金Supported by the Prospective Research Project of Jiangsu Province(BY2014005-06)
文摘Both activity and stability of the catalyst can be improved in heterogeneous Fenton reaction,in particular,with no limitation for the working p H and no production of the sludge.In this work,a combination of catalyst Cu_2O and pore-channel-dispersed H_2O_2is proposed to treat the pulp wastewater.Degradation degree of CODs in the wastewater was up to 77%in the ceramic membrane reactor using Cu_2O powder(2.0 g·L^(-1))and membranefeeding H_2O_2(0.8 ml·L^(-1))within 60 min.Evolution of·OH radical formation in the advanced oxidation process was analyzed with a fluorescent method.Utilization efficiency of H_2O_2was successfully enhanced by 10%with the membrane distributor.Further on,the catalyst recyclability was evaluated in a five-cycle test.The concentration of copper ions being dissolved in the treated water was monitored with ICP.After Cu_2O/H_2O_2(membrane)treatment the effluent is qualified to discharge with COD concentration lower than 15 mg·L^(-1)with regard to the national standard GB25467-2010.
文摘研究了以水淬渣-累托石为吸附剂对含Cu2+的冶金废水进行处理。实验结果表明,在不调节含Cu2+冶金废水pH值的条件下,水淬渣与累托石质量比为3∶1,吸附剂用量为0.03 g/mL,作用时间为20 m in,温度为25℃(常温)时,Cu2+的去除率达99.8%,对Cu2+的吸附容量为0.302 mg/g,处理后的水符合国家污水综合排放标准(GB8978-1996)一级标准。水淬渣-累托石混合吸附剂比水淬渣或累托石单一吸附剂除Cu2+效果要好。