化学还原法处理含铬废水

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英文篇名：Treatment of Chromium-containing Wastewater by Chemical Reduction 作者：杨欢 英文作者：YANG Huan;College of Biological and Pharmaceutical Engineering,Wuhan Huaxia University of Technology; 关键词：六价铬 ; 还原 ; 硫酸亚铁 英文关键词：hexavalent chromium;;reduction;;ferrous sulfate 中文刊名：GZHA 英文刊名：Guangzhou Chemical Industry 机构：武汉华夏理工学院生物与制药工程学院; 出版日期：2019-06-23 出版单位：广州化工 年：2019 期：v.47 语种：中文; 页：GZHA201912037 页数：3 CN：12 ISSN：44-1228/TQ 分类号：114-115+147

摘要

铬是人体必需的一种元素,但是六价铬是环境及水质中的一种主要污染物。本实验用化学还原法处理含铬废水,研究了以硫酸亚铁为还原剂,改变p H值和还原剂投料量,对废水中六价铬去除率的影响。在硫酸亚铁理论投料量下,改变待测废水pH值;在最佳pH值下,改变还原剂硫酸亚铁的投料量。实验数据对比发现,pH值为中性时,硫酸亚铁的投料量为理论投料量的1. 12倍时,对废水中六价铬的去除率最高。
        Chromium is a necessary element for human body,but hexavalent chromium is a main pollutant in environment and water. Chromium-containing wastewater was treated by chemical reduction method,and the removal rate of hexavalent chromium in wastewater was studied by using ferrous sulfate as reducing agent and changing the pH value and the amount of reducing agent. Under the theoretical dosage of ferrous sulfate,the pH value of the wastewater was changed. At the optimum pH,the amount of the reducing agent ferrous sulfate was changed. The comparison of experimental data showed that when the pH value of wastewater was close to neutral and the amount of ferrous sulfate was1. 12 times of the theoretical amount,the removal rate of hexavalent chromium in waste water was the highest.

引文

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