As long as there are human activities, it will cause different degrees of pollution to the environment. The environmental pollution caused by human activities can be divided into industrial pollution, traffic pollution, agricultural pollution, and domestic pollution according to its causes. Among these types of pollution, industrial pollution has contributed a lot 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 in the first place when designing processes. The precision etching line processing involves the use of chemical syrup, which is the most important thing. From the perspective of process design, the contribution to environmental protection mainly comes from the following aspects consider.

(1) The influence of the composition of the solution on the environment. The composition of the solution includes the concentration of the solution and the composition of the solution. From the perspective of controlling source reduction, reducing the concentration of the solution is a good way. The decrease in solution concentration reduces the cost of preparation and also reduces the amount of carry-out. The main contribution to environmental protection is the reduction in the amount of carry-out as the concentration of the solution decreases, but the decrease in the concentration of the solution should be compatible with the actual production process, because a too low concentration will affect normal use or prolong the processing time too much. The production efficiency is reduced, the solution concentration is too low, the solution changes quickly during use, and the frequency of adjustment increases, which brings great inconvenience to production. At the same time, frequent analysis also increases the amount of sewage generated (because of the The solution needs to be analyzed, and then adjusted according to the analysis data.

(2) The difficulty and cost of processing these chemical components. Although environmental protection is an important task, it is for the purpose of the enterprise to obtain benefits. If the processing cost of the chemical components in a formula is too high, no matter how effective it is, it is obviously not suitable for use.

(3) Control during etching production process. The control in the production process is mainly manifested in the recovery of the solution, rather than the direct discharge. The specific method is to add a recovery tank near the working tank, and then perform subsequent processing such as water washing.

(4) Treatment of cleaning water and waste liquid. The necessary water treatment facilities in the etching process should not be harmful to the environment because of their own interests. If there is a new process, there should be a complete 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 must be added to ensure that the wastewater discharged from the etching production line meets the discharge standards.