Sustainable Mining and Metallurgy

To improve the product water quality, oxidation ponds and surface flow constructed wetlands are used to treat the effluent from sewage treatment plants and replenish the river. At the initial stage of project construction, ecological restoration materials were used to repair the bottom soil of oxidation ponds and wetlands in situ. By setting up ecological base and solar aeration devices in the oxidation pond, using diatomite and volcanic rock as wetland fillers, and planting a variety of aquatic plants in the wetland, the effluent of the project can stably meet the class V standard of the Environmental Quality Standard of Surface Water(GB 3838—2002), which not only ensures the water quality of the river, but also beautifies the landscape.