Product usage background and introduction:
In the production process of the PCB industry, a large amount of micro etching solution, etching solution, copper nitrate and other metals containing different concentrations of copper are produced
High revenue value, and there may be a small amount of copper and heavy metals present in the discharged wastewater. If environmental protection treatment cannot be carried out reasonably, on the one hand
Causing serious waste of resources, on the other hand, heavy metal emissions seep into the soil and water sources, which will affect our survival
The natural environment and one's own health cause serious pollution and harm.
1) Microetching solution
Microetching solutions include sodium persulfate/sulfuric acid system and hydrogen peroxide/sulfuric acid system, which have been widely used in the surface of PCBs in recent years
Surface treatment processes, such as copper deposition (PTH) process, electroplating process, inner layer pre-treatment, green oil pre-treatment, OSP treatment, etc
On the production line, direct electrolysis can cause damage to the anode coating.
2) Etching solution
During the etching process of electronic circuit boards (PCBs), the copper content in the etching solution gradually increases. The etching solution needs to achieve the best etching performance
Effect: Each liter of etching solution should contain 120 to 180 grams of copper and corresponding amounts of etching salt (NH4CI) and ammonia solution (NH3).
The etching solution regeneration cycle system can be divided into acidic and alkaline systems, which can be further divided into extraction method and direct electrolysis method. Can transfer a large amount of original
The post use etching solution that needs to be discharged is reduced and regenerated into a reusable regenerated etching solution. So as to reduce the discharge of production waste liquid,
Reuse reduces production costs and can extract high-purity electrolytic copper metal.
1. Application field:
The production process in the PCB industry produces a large amount of micro etching solution, etching solution, copper nitrate, and other copper containing different concentrations
2. Application system:
Microetching solution
Alkaline etching solution
Acid etching solution
3. Current density: (200-400) A/m2
4. Service life: 12-24 months
