湿法冶金Issue(3)：245-248,4.DOI:10.13355/j.cnki.sfyj.2015.03.20
离子型稀土冶炼废水处理工艺研究
Treatment of Smelting Wastewater of Ionic Rare Earths
蔚龙凤 1陈乡 1王海珍 1孙全庆 1王智鹏 1刘文华 1董欣杨1
作者信息
- 1. 核工业北京化工冶金研究院，北京 101149
- 折叠
摘要
Abstract
By a clean production process ,the wastewater from smelting ionic rare earths ore is high acidity ,high salt ,and concentration of phosphorus ,heavy metal ions ,CODCr and ammonia nitrogen is over the national standard .This study has carried on removing phosphorus ,heavy metal ions from the wastewater .The technological route of removing organic phase -dephosphorization -removing heavy metal ions - step oxidation -quartz sand filtration is determined .The results show that adjusting wastewater pH to 9 .5 using lime milk and adding 20 mg/L polyaluminium chloride ,total phosphorus in the wastewater can be deduced to lower than 1 mg/L ,total phosphorus removal rate can reach 88 .2% .Adding sodium sulphide of 50 mg/L ,and organic chelating agent of 50 mg/L into the waste water after dephosphorization ,reacting 0 .5 h ,the concentration of total lead ion in the supernatant is 0 .17 mg/L ,total lead removal rate is 99% .The effluent water quality meets the Emission Standards of Pollutants from Rare Earths Industry (GB26451—2011) .关键词
离子型稀土/冶炼废水/重金属离子/磷/去除Key words
ionic rare earth ore/smelting wastewater/heavy metal ion/phosphorus/removal分类
资源环境引用本文复制引用
蔚龙凤,陈乡,王海珍,孙全庆,王智鹏,刘文华,董欣杨..离子型稀土冶炼废水处理工艺研究[J].湿法冶金,2015,(3):245-248,4.
