[Objectives]To treat pig farm wastewater and solve the problem of pollution caused by it to surface water or groundwater.[Methods]Fe and Zn/biochar(AC)was prepared by dipping method using pig manure-derived biochar as...[Objectives]To treat pig farm wastewater and solve the problem of pollution caused by it to surface water or groundwater.[Methods]Fe and Zn/biochar(AC)was prepared by dipping method using pig manure-derived biochar as carrier.The preparation conditions were investigated,and the screened metal-loaded biochar was characterized.Pig farm waste water was treated with metal-loaded biochar-H2O2 catalytic oxidation method.[Results]At the COD concentration of 2904 mg/L,0.02 g Zn/AC and 0.005 mL H2O2 showed the highest COD removal rate(qe)from pig breeding wastewater under conditions of reaction time of 8 h,pH value of 7 and temperature of 55℃,reaching 70.98%.[Conclusions]Fe or Zn-loaded biochar made from pig manure-derived activated carbon has a certain catalytic capacity for the actual oxidation treatment of pig farm wastewater.The activity of Zn/AC was higher,and its COD removal rate from pig farm wastewater was also higher.展开更多
基金Scientific and Technological Innovation Project of Jingjiang City,Jiangsu Province(HDCXJ6001).
文摘[Objectives]To treat pig farm wastewater and solve the problem of pollution caused by it to surface water or groundwater.[Methods]Fe and Zn/biochar(AC)was prepared by dipping method using pig manure-derived biochar as carrier.The preparation conditions were investigated,and the screened metal-loaded biochar was characterized.Pig farm waste water was treated with metal-loaded biochar-H2O2 catalytic oxidation method.[Results]At the COD concentration of 2904 mg/L,0.02 g Zn/AC and 0.005 mL H2O2 showed the highest COD removal rate(qe)from pig breeding wastewater under conditions of reaction time of 8 h,pH value of 7 and temperature of 55℃,reaching 70.98%.[Conclusions]Fe or Zn-loaded biochar made from pig manure-derived activated carbon has a certain catalytic capacity for the actual oxidation treatment of pig farm wastewater.The activity of Zn/AC was higher,and its COD removal rate from pig farm wastewater was also higher.
