According to the nature of copper alloy base polishing wastewater from Shenyang Mint and through the comparison of comprehensive analysis of treatment method for the similar wastewater, a technological process with neutralized method for treating acidic washing water and rinsing water was put forward; the wastewater after treating reached the standard of the national discharge.

Semi-solid isothermal treatment is thought as a potential technology in the manufacturing non-dendritic structure alloy slurry, the research of this technology is helpful to rich the theory of semi-solid metal forming and accelerate the application of this technology.