Sterilizing and alga killing agent for treating washing water generated in printed circuit board manufacturing process

Abstract

The invention provides a sterilizing and alga killing agent for treating washing water generated in a printed circuit board manufacturing process. The sterilizing and alga killing agent is characterized by being prepared from sodium polysulfide, sodium bicarbonate, methacrylate, amide, a surfactant and pure water. The sterilizing and alga killing agent has a favorable sterilizing effect and has a rapid sterilizing function at a certain concentration, and the single-time killing rate is approximate to 100%; and the dosage of the washing water can be reduced by 1 / 3 to 2 / 3.

Description

technical field [0001] The invention belongs to the technical field of washing water sterilization and algae removal in the manufacturing process of printed circuit boards, and in particular relates to a chemical method for sterilization and algae removal. Background technique [0002] During the electroplating process of printed circuit boards, the microorganisms are mainly slime bacteria, and their metabolism produces a large amount of mucus, which absorbs other suspended substances in the water. . At present, it is generally solved by manual backwashing and pure water replacement. For example, the washing tanks electroplated in PCB factories are maintained once a week to remove a large amount of bacterial secretions on the walls of the washing tanks. Manual scrubbing is required to replace the water, which consumes a lot of time. Bring some pressure on the production capacity of manufacturers. But it is not the most economical method in terms of cost and efficiency. Ma...

AI Technical Summary

Problems solved by technology

However, non-oxidative bactericides and algicides are usually non-oxidative compounds such as chlorophenols and quaternary ammonium salts, and their treatment costs are higher than those of oxidative bactericides.