Treatment Effect of Pig Manure-derived Biochar-based Metal Catalyst for Pig Breeding Wastewater

• 作者: Jiangcheng SHU Jiawei HU Yijue GAO Zhijun ZHANG
• 来源期刊: 亚洲农业研究:英文版
• 学科: 地球科学
• 关键词: Pig manure Metal-loaded biochar Hydrogen peroxide Catalytic oxidation Pig farm wastewater
• 年，卷（期）: 2020,（6）
• 页码范围: 16-20
• 页数: 5页
• 分类号: X70

摘要

[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.