Research Progress of Ecological Restoration for Wetlands in Coal Mine Areas

Research advantages of the three main technologies and targets of wetland restoration in coal mine areas including wastewater treatment, landscape and ecosystem establishment and fish farming were summarized in the article. By using fly ash as matrix, assembling phytoplankton and algae and controlling hydraulic conditions, constructed wetlands for wastewater treatment were built based on absorption by plants and biochemical effects by microorganism to treat acrid water with heavy mental concentration. Landscape and ecosystem restoration should take account of regional characteristics to build wetland parks and integrated ecosystem for both landscape and protection and restoration of biodiversity. Fish farming should be built based on appropriate water quality and take tests on selected fish species to assess feasibility and economic benefits in coal mine areas.