Study on Arsenic Removal by Scorodite

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Lu, Ming^1 ; Sun, Lifa^1 ; Li, Qingchao^2 ; Jiang, Hongbing^1 ; Yin, Shubiao^1

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan

650093, China^1

Kunming BOE Display Technology Co. Ltd, Kunmin, Yunnam

650093, China^2

关键词: Arsenic pollution;    Arsenic removal;    Discharge standards;    Leaching rates;    Natural environments;    Precipitation methods;    Research object;    Ultra-sonication;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012102/pdf
DOI  :  10.1088/1755-1315/218/1/012102

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

During heavy metal smelting and ore mining, there is a large amount of arsenic in flue gas and waste acid, forming acid sewage. If it is discharged into the natural environment directly, a large amount of arsenic will be placed in the natural environment, causing arsenic pollution and harms to the health of animals, plants and human beings. This article explores the waste acid of copper smelting solution as research object. For the As 5+ solution, the scorodite-A kind of solidnarsenic bearing is low residue of arsenic, easy to store and more stable-prepare by the enviromnent with Ultrasonication. For the As 3+ solution, in order to achieve discharge standards, we use the Lime-iron-washing precipitation method and sulfidation to the arsenic, after that we use the TCLP experiments to check the toxic leaching rate.