When reporters arrived at Baoshan Non-ferrous Metal Mining, the staffs were busy in handling the work of their newly constructed waste water plant. It is a project to efficiently remove the heavy metal from the waste water, which can meet the standards of waste water release and reuse it. In recent years, great efforts were tried by Guiyang county to handle the comprehensive renovation work of environment pollution and pollutants discharge reduction. 790 million yuan was placed on the comprehensive renovation of 15 heavy metal pollution projects. According to the data, thanks for the sound implementation work on emission reduction measures, 745tons of chemical oxygen demand, 98tons of ammonia nitrogen, and 3744tons of sulfur dioxide were reduced by the county.