膜技术应用于高酸高盐电池污水分盐处理
翟忠伟
辽宁碧投水环境科技有限公司,辽宁 沈阳 110167
Application of membrane technology in desalting treatment of wastewater from batteries with high acidity and high salinity
Zhai Zhongwei
Liaoning Bitou Water Environment Technology Corporation Ltd., Shenyang 110167, China
摘要 电池污水因含高浓度重金属离子、呈强酸性,存在处理难度大与金属离子回收价值高的双重特点。提出了耐酸分离膜、纳滤膜、RO膜的分盐处理方案,根据不同处理阶段含盐量的变化,对应选择不同种类的RO膜,再结合多效蒸发技术实现盐浓缩提炼,最终达成盐类回收与污水零排放的目标,验证了该技术路线的可行性,同时也验证了膜技术产品的可靠性。
关键词 :
电池污水 ,
高酸高盐污水 ,
膜分离技术 ,
分盐 ,
零排放
Abstract :Battery wastewater presents dual characteristics: significant treatment difficulty and high value in metal ion recovery due to the high concentration of heavy metal ions and strong acidity. The salt separation treatment scheme of acid-resistant separation membranes, nanofiltration membranes, and reverse osmosis (RO) membranes were employed. Based on the changes in salt content at different treatment stages, different types of RO membranes were selected accordingly. Combined with multi-effect evaporation technology, salt concentration and refinement were achieved, ultimately realizing the goals of salt recovery and zero wastewater discharge. The verifies the feasibility of the technical route and the reliability of membrane technology products were also demonstrated.
Key words :
battery wastewater
high-acid and high-salt wastewater
membrane separation technology
salt separation
zero emission
作者简介 : 翟忠伟( 1981— ),男,辽宁沈阳人,高级工程师。
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