摘要
用硫酸亚铁将废水中Ｃｒ（Ⅵ）还原成Ｃｒ（Ⅲ），再用氢氧化镁乳液和废水中的酸，使铬离子、铁离子形成氢氧化物沉淀，澄清分离。这样含铬废水经处理后，铬的含量及ｐＨ值均能达到排放标准。该方法操作简便，效果显著。
Chromium(Ⅵ) in waste water is reduced to Chromium(Ⅲ) by FeSO 4.Then Mg(OH) 2 is added to countreact Cr 3+ and Fe 3+ and to form Hydroxide precipitation in the soultion.After clarification and separation,the pH value Cr 6+ and Cr 3+ concentration could meet the regulation for disposal. The results obtained were satisfactory.
出处
《华东地质学院学报》
1999年第3期265-269,共5页
Journal of East China Geological Institute
关键词
氢氧化镁
废水
铬
废水处理
magesium hydroxide
treatment
waste water
chromium
