含砷废渣填埋场及矿井渗滤液除砷工艺研究  

Study on Arsenic Removal Process of Waste Residue Landfill and Mine Leachate

作　　者：李鹏 LI Peng(Hunan Zhongji Enwironmenual Invest Co.,Ltd.,Changsha 410002,China)

机构地区：[1]湖南中集环境投资有限公司,湖南长沙410002

出　　处：《湖南有色金属》2021年第3期63-66,共4页Hunan Nonferrous Metals

摘　　要：以湖南某含砷填埋场及矿井渗滤液为对象,以高铁酸钠为氧化剂,研究了在不同铁砷质量比、反应pH值、反应时间及PAM添加量的条件下,对含砷渗滤液处理的最佳反应条件。结果表明,高铁酸钠处理此含砷渗滤液的最佳反应条件为:铁砷质量比为4.0,pH值为6.0,反应时间为20 min,PAM添加量为0.6mg/L,在此条件下,砷的去除率达99%以上,砷的残余浓度远低于0.05mg/L。Taking the leachate from an arsenic containing landfill and abandoned mine in Hunan Province as the research object,and using sodium ferrate as an oxidant to treat arsenic containing leachate,the optimum reaction conditions for arsenic containing leachate were studied under the conditions of different mass ratio of iron to arsenic,pH value,reaction time and PAM dosage.The results shows the optimum reaction conditions of arsenic removal process of waste residue landfill and mine leachate by sodium ferrate as:mass ratio of iron to arsenic is 4.0,pH value is 6.0,reaction time is 20 min,and PAM dosage is 0.6 mg/L.Under these conditions,the removal rate of arsenic is more than 99%,and the residual concentration of arsenic is much lower than 0.05 mg/L.

关 键 词：高铁酸钠 含砷渗滤液 pH值 氧化 

分 类 号：X758[环境科学与工程—环境工程]