ABSTRACT
Results expected in sulfate-reducing environments include decreased concentrations of sulfate and heavy metals coupled with an increase in pH and alkalinity (1-4). The use of biological sulfate reduction to treat contaminated groundwater containing sulfate and dissolved heavy metals has been
1 INTRODUCTION
With the development of the national economy, coal has become one of the main energy in China. Coal mining will bring negative effects to the local ecological environment in benefits also. Coal waste is the solid waste from coal mining and coal washing process and dark grey rocks associated with coal seam in coal forming process. Its carbon content is low, and it’s harder than coal. At present, 20% of coal mining quantity with coal waste discharged in China. The coal waste would be increased about 4 million tons every year all over the country, but it’s about 60 million tons in comprehensive utilization, and the rest of the nearest melange storage form of coal gangue (Pei Z.Y., et al., 2011).
