摘要
概述了含砷废水目前常用的化学处理方法,指出了传统化学沉淀法的局限性,对臭葱石固砷法处理含砷废水进行了重点阐述。介绍了臭葱石的结构和性质,综述了臭葱石固砷法的研究现状,总结了臭葱石的稳定性研究,并展望了臭葱石固砷法的重要意义。指出臭葱石的稳定性高于无定型砷酸铁,在酸性或中性条件下表现出很低的砷浸出浓度,能稳定存在,满足长期堆存的要求。
The current chemical treatment methods for arsenic containing wastewater were summarized,and the limitations of traditional chemical precipitation methods were pointed out.The treatment of arsenic-bearing wastewater by scorodite fixed arsenic method was expounded emphatically in detail.The structure and properties of scorodite were introduced.The research status of the method of scorodite fixed arsenic was reviewed.The stability of scorodite was summarized,and the important significance of the method of scorodite fixed arsenic was prospected.The stability of scorodite was higher than that of amorphous ferric arsenate.In the acidic or neutral conditions,the scorodite showed low concentration of arsenic leaching,which suggested that scorodite could keep stable and meet the long-term storage requirements.
作者
张楠
方紫薇
郑雅杰
张寿春
ZHANG Nan;FANG Zi-wei;ZHENG Ya-jie;ZHANG Shou-chun(School of Chemistry and Chemical Engineering,Central South University,Hunan Changsha 410083;School of Metallurgy and Environment,Central South University,Hunan Changsha 410083,China)
出处
《广州化工》
CAS
2019年第2期20-23,47,共5页
GuangZhou Chemical Industry
基金
湖南省重点研发计划项目(No:2017SK2254)
关键词
臭葱石固砷法
臭葱石
含砷废水
scorodite fixed arsenic method
scorodite
arsenic-bearing wastewater
