The stainless steel annealing and pickling process can product large quantity of waste mixed acid(HF/HNO3) that must be treated through acid purification system.
不锈钢生产退火酸洗过程会产生大量废混酸（HF/HNO3），通过酸净化系统对废酸进行处理。
Proposed is a process for purification of yellow humic acid by heterophase cation-exchange membrane. After electrophoresis, its purity was up to 95% and recovery, 88.47%.
研究了一种新的黄腐酸提纯工艺方法，采用异相离子交换膜进行黄腐酸的电渗析提纯，黄腐酸经电渗析后的纯度可达95% ，收率为88.47% ；
The working process of resin bed and working principle of acid purification unit and flowchart are described particularly. Making comparison of acid consumption of using it before and after.
详细介绍了树脂床工作过程和酸净化装置的工作原理及工艺流程，对酸净化装置投入前后的酸耗量做了对比。
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