浓缩回用稀土氯化铵废水新工艺研究_李会婷

浓缩回用稀土氯化铵废水新工艺研究_李会婷第33卷第6期现代化工June20132013年6月ModernChemicalIndustry浓缩回用稀土氯化铵废水新工艺研究李会婷，邱祖民*(南昌大学环境与化学工程学院，江西南昌330031)摘要:通过分析稀土氯化铵废水的特性，针对现有废水处理技术缺陷提出稀土氯化铵废水循环利用的新工艺方案。该方案可实现稀土氯化铵废水的闭路循环，以最低的能耗使废水中的氯化铵自浓缩，且回收的产品中氯化铵的质量分数达95%以上，从根本上解决稀土氯化铵废水污染和资源回收再利用的问题。关键词:稀土废水;闭路循环;蒸发结晶;氯化铵中图分类号:X756文献标志码:A文章编号:0253－4320(2013)06－0101－03Noveltechnologyforcondensationandreclamationoftherare-earthammoniumchloridewastewaterLIHui-ting，QIUZu-min*(SchoolofEnvironmentalandChemicalEngineering，NanchangUniversity，Nanchang330031，China)Abstract:Thecharacteristicsofrare-earthammoniumchloridewastewaterareinvestigated．Basedonthedefectsofexistingwastewatertreatmenttechnology，noveltechnologyaboutrare-earthammoniumchloridewastewaterrecyclingisprovided．Theproblemofpollutionandresourcesrecoveryfortherare-earthammoniumchloridewastewaterwithclosedcirculationofwastewatercanbesolvedthroughauto-concentratingwastewaterwiththelowestenergyconsumption．Therecycledammoniumchloridecanreach95%．Keywords:rare-earthwastewater;closedcirc