摘要
采用硫化法去除冶金工业酸性废水中的砷．除砷形成的含砷（ 主要成分 Ａｓ２ Ｓ３） 废渣用浓硫酸处理，废渣中的砷元素以 Ａｓ２ Ｏ３ 形式回收，纯度达９９ ．４ ％ ，同时回收副产物硫磺等．试验结果表明，该方法的化学反应速度快，工艺过程稳定，砷的总回收率达９５ ％ 以上，除砷效率可达９９ ．９９ ％ ．
Arsenic was decontaminated from an acidic metallurgical wastewater by sulphurization. The obtained residues containing mainly arsenic sulphuret, was then treated with concentrate sulphuric acid, resulting in recovering arsenic in the form of arsenic trioxide with a purity of 99.4 percent and sulphur as by-product. The results showed that this treatment was technically stable and fast with more than 95 percent total arsenic-recovery ratio and 99.99 percent arsenic-removal efficiency from the wastewater.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
1999年第4期310-312,共3页
China Environmental Science
基金
国家自然科学基金
湖南省自然科学基金
