investigation on reducing environmental impacts of waste water from coal washery plant

Environmental impacts of Aghdarband coal mine: pollution by heavy metals

Aghdarband coal mine, located in NE of Iran, with annual coal and waste production capacity of about twenty million and six thousand tons, respectively, causes the increase of the concentration of some heavy metals in the soil and surrounded sediments. This paper deals with geochemical distribution and environmental effects of the heavy metals on the sediments around the mine, using geochemical...

Cradle to Grave : The Environmental Impacts from Coal Cradle to Grave : The Environmental Impacts from Coal Clean Air Task

Environmental Impact Assessment of Coal Washing Plant (Alborz- Sharghi –Iran)

This paper utilises the modified Folchi method to assess the environmental impact of coal washing plant, Alborz Sharghi, North-east Iran. In this study, the number of factors designed in the method was slightly modified by focusing on the environmental impact of coal washing operations. In addition, few other factors were designed and added to the previous factors. Then, twenty-one values of en...

Macro Perspective: E-Waste Environmental Impacts

The industrial revolution followed by the advances in information technology during the last century has radically changed people's lifestyle. The increasing economic development has introduced another aspect of pollution in the environment and that is “E-waste”. Electronic waste, abbreviated as e-waste, consists of discarded old computers, TVs, refrigerators, radios-basically any electrical or...

This Drying System Uses a Combination of Thermal Energy from Boiler and Condenser Cooling Water as the Heat Source for Coal Drying USE OF POWER PLANT WASTE HEAT TO REDUCE COAL MOISTURE PROVIDES PLANT PERFORMANCE AND ENVIRONMENTAL BENEFITS

In recent years, subbituminous coal from the Powder River Basin and lignites from Texas and North Dakota have captured an increasing share of the power generation market involving pulverized coal-fired power plants. However, these coals contain relatively large amounts of moisture, which affect unit performance, stack emissions and plant maintenance costs. The moisture also results in fuel hand...

Study of Gas Environment Impacts on Volumetric Coal Matrix Changes

The Outburst can be defined as a sudden release of coal and rock accompanied by large quantities of gas into the underground coal mine workings which represents a major hazard in underground coal mines. Gas drainage has been proven to be successful in reducing outburst hazards by decreasing the in-situ gas pressure. One of aspect of gas drainage from coal seams is coal matrix volume changes. Cu...