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Electroplating industry waste acid treatment: membrane chromatography technology for acid and metal ions efficient recycling 电镀行业废酸处理：膜析技术实现酸与金属离子高效回收再利用

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In the plating industry, the use of polishing liquid is an indispensable part of the production process, but it also brings the problem of acid treatment. This kind of waste acid not only has a complex composition, but also a high acid concentration, direct neutralization and discharge not only consume a lot of alkali, but also produce a lot of waste salt, causing no small pressure on the environment.

In order to solve this problem, the use of membrane disintegrator processing technology is particularly critical. The membrane separator is an efficient separation device, which can selectively separate different components of the mixed liquid through a specific membrane material. In the treatment of electroplating waste acid, the membrane separator can play the following important roles:

Acid recovery: Up to 80% of the acid can be effectively separated and recycled through the treatment of membrane disintegrators. This not only reduces the consumption of fresh acid, but also reduces the discharge of waste acid, thus enabling the recycling of resources.

Metal ion retention: At the same time of acid recovery, the membrane separator can also retain 90% of metal ions. These metal ions usually have a high value and can be further recycled through subsequent treatment, thus improving the utilization rate of resources. At the same time, this also reduces the pollution of metal ions to the environment.

Neutral base saving: Since the membrane separator is able to recover most of the acid, the amount of alkali required for neutralization is reduced. This not only reduces the cost of treatment, but also reduces the amount of waste salt produced as a result of the neutralization reaction.

Reduce waste salt production: Waste salt is one of the main by-products in the neutralization process of electroplating waste acid. Through the treatment of the membrane separator, the amount of waste salt produced can be significantly reduced, thus reducing the risk of pollution to the environment.

In summary, the application of membrane separator treatment technology in electroplating waste acid treatment has significant advantages. It not only enables the effective recovery and reuse of acids and metal ions, but also significantly reduces treatment costs and environmental risks. Therefore, for the electroplating industry, the use of membrane separator treatment technology is an economical and environmentally friendly waste acid treatment solution.

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