DEVICE AND METHOD FOR CONTROLLING POLLUTANTS DURING CYCLIC UTILIZATION OF WATER RESOURCES IN METAL MINES

摘要

Disclosed are a device and method for controlling pollutants during cyclic utilization of water resources in metal mines. The device comprises a multi-stage water inflow constructed wetland (3), wherein one or more layers of fillers are laid in the multi-stage water inflow constructed wetland (3), and water distribution pipes (4) are buried in the filler layers at different height levels for multi-stage water inflow to degrade or remove pollutants by means of enabling received basin water to flow through each layer of filler. The filler type, a dosage ratio, the particle size and the filling height of each layer of filler in the multi-stage water inflow constructed wetland are specifically selected to be capable of effectively realizing heavy metal adsorption, suspended matter filtering, organic matter degradation, and dephosphorization and denitrification in the multi-stage water inflow constructed wetland, effectively preventing human health from being harmed by heavy metal accumulation, maintaining farmland in good condition and promoting the sustainable and healthy development of agriculture.