摘要:
砷是自然界常见元素,环境中的砷源自包括含砷金属矿石的开采、焙烧、冶炼、化工、炼焦、火电、造纸、皮革等生产过程中排放的含砷烟尘、废水、废气、废渣,在冶金工业生产过程中,约有30%左右的砷进入水、气和土壤中,使附近土地受到严重的砷污染.砷污染土壤给人类生态环境造成巨大危害,已经成为全球性的环境问题.人们对清除土壤砷方法进行了大量研究,当前砷污染土壤治理工艺主要有:固化/稳定化、焙烧挥发、沉淀、萃取、淋洗、生物法等.本文对砷污染土壤的处理工艺进行了简单介绍.
Abstract:
Arsenic is a common element in nature,environmental arsenic from arsenic metal ore mining,roasting,smelting,chemical,metallurgical,power,paper,leather and other production process emissions containing arsenic dust,waste water,waste gas and waste residue.In the production process of metallurgical industry,about 30% of the arsenic emitted in water,air and soil in land near by caused serious arsenic contamination.Arsenic contaminated soil has caused great harm to human ecological environment,and has become a global environmental problem.There has been a lot of research on the removal of soil arsenic,the arsenic contaminated soil remediation process mainly include:solidification/stabilization,volatilization roasting,precipitation,extraction,leaching and biological method.In this paper,the processing technology of arsenic contaminated soil at home and abroad is introduced briefly.
下载: