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Will hardware polishing pollute water?
It has an impact on the environment, and the metal dust produced by polishing, including the flying dust on the polishing belt, is very harmful.
Pretreatment of hardware products and pollutants
Degreasing process: oil stains and pollutants on the surface of hardware products are removed by degreasing agent in degreasing pool.
Pickling process: according to the requirements of hardware products, the oxidation and corrosiveness of acidic solution are used to remove the rust on the surface of hardware products in the pickling tank.
Phosphating process: The hardware products are soaked in phosphating solution to form a protective film on the surface, which is used as a primer before painting.
The three processes will produce a lot of waste liquid, and cleaning degreasing pool, pickling pool and phosphating pool will also produce a lot of waste water. Wastewater mainly contains pollutants such as pH, COD, ammonia nitrogen and SS.
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