As long as there are human activities, there will be different degrees of pollution to the environment. According to the causes of human activities, environmental pollution can be divided into industrial pollution, traffic pollution, agricultural pollution, and life pollution.
Among these types of pollution, industrial pollution contributes the most to environmental pollution and is also difficult to remove. From the perspective of environmental protection and the need for survival, it is very important for every processing enterprise to put pollution prevention and environmental protection first when designing processes.
Metal etching services and process involves the use of chemical solutions, which is even more important. From the perspective of process design, the contribution to environmental protection is mainly considered from the following aspects.
- The impact of solution composition on the environment. The composition of the solution includes the concentration of the solution and the components of the solution. From the perspective of controlling source reduction, reducing the concentration of the solution is a good method. Reducing the concentration of the solution not only reduces the preparation cost, but also reduces the amount of carryover. The contribution to environmental protection is mainly the reduction of carryover as the solution concentration decreases. However, the reduction of solution concentration must be adapted to the actual production process, because too low a concentration will affect normal use or extend the processing time too much, resulting in reduced production efficiency. If the solution concentration is too low, the solution will change quickly during use, and the frequency of adjustment will increase, which will bring great inconvenience to production. At the same time, frequent analysis will also increase the amount of wastewater generated (because the solution must be analyzed before adjustment, and then adjusted according to the analysis data).
- The difficulty and cost of handling these chemical etching components. Although environmental protection is an important task, the purpose of the enterprise is to gain benefits. If the cost of handling the chemical components in a formula is too high, no matter how effective it is, it is obviously not suitable for use.
- Control during the etching production process. Control during the production process is mainly reflected in the recovery of the solution rather than direct discharge. The specific method is to add a recovery tank near the working tank, and then carry out subsequent processing such as water washing.
- Treatment of cleaning water and waste liquid. The necessary water treatment facilities in the etching process are necessary and should not harm the environment for their own interests. If there is a new For the added process, there should be a perfect treatment method for the waste liquid generated by the chemicals used in the new process. If the existing sewage treatment facilities cannot treat it, new corresponding treatment facilities should be added to ensure that the waste water discharged from the etching production line meets the discharge standards.
