用双氧水氧化-铁盐沉淀法从含砷废水中去除砷试验研究  

Removal of Arsenic From Arsenic Wastewater by H 2O 2 Oxidation—Ferric Salt Precipitation Method

作　　者：陈芳芳[1] 陈辉[2] CHEN Fangfang;CHEN Hui(Modern Education Technology Center,Jiangxi University of Technology,Nanchang 330098,China;Office of Academic Affairs,Jiangxi University of Technology,Nanchang 330098,China)

机构地区：[1]江西科技学院现代教育技术中心,江西南昌330098 [2]江西科技学院教务处,江西南昌330098

出　　处：《湿法冶金》2022年第4期372-375,共4页Hydrometallurgy of China

基　　金：江西省教育厅科学技术研究项目(GJJ202006)。

摘　　要：某冶炼厂区土壤中含砷,雨水渗透后产生含砷废水,其中砷质量浓度在5~100 mg/L之间。研究了采用氧化—铁盐法从此类废水中去除砷,考察了氧化剂用量、铁盐用量、反应温度、反应时间和搅拌速度对除砷的影响。结果表明:在氧化剂用量n(H_(2)O_(2))/n(As)=1.1/1、铁盐用量n(Fe)/n(As)=1.3/1、搅拌速度100 r/min、60℃下反应2.0 h,废水中砷质量浓度降至0.12 mg/L以下,砷脱除效果较好。There is arsenic in the soil of a smelting plant,and the wastewater containing arsenic is produced after the infiltration of rainwater,and the arsenic concentration is 5~100 mg/L.Recovery of arsenic from the wastewater by H_(2)O_(2)oxidation—ferric salt precipitation method was studied.The effects of oxidant dosage,ferric salt dosage,reaction temperature,reaction time and stirring speed on arsenic removal were examined.The results show that under the conditions of oxidant dosage n(H_(2)O_(2))/n(As)=1.1/1,ferric salt dosage n(Fe)/n(As)=1.3/1,stirring speed of 100 r/min,reaction time of 2.0 h and temperature of 60℃,arsenic concentration in the wastewater decreases to less than 0.12 mg/L,and arsenic removal effect is good.

关 键 词：废水 砷 双氧水氧化—铁盐深沉 脱除 

分 类 号：TF803.25[冶金工程—有色金属冶金] X703[环境科学与工程—环境工程]