Potential Environmental Impacts
Potential environmental impacts The negative impacts may occur during construction and operation of power plants. The construction impacts are caused mainly by the following activities of site preparation: clearing, excavation, earthwork, drainage, dredging or dam rivers and other water bodies, establishment of the areas of placement, loan and filling. It employs a large number of workers in the construction of power plants, and this can cause major socio-cultural impacts on local communities. The power plants are considered major sources of air emissions and can affect air quality in the local or regional area. The combustion occurs in the thermoelectric projects emits sulfur dioxide (S02), nitrogen oxides (NOx), carbon monoxide (CO), carbon dioxide (C02) and particulates (which may contain minor metals).The amounts of each depend on the type and size of the facility and the type and quality of fuel, and how it burns. The dispersion and concentrations of these emissions, ground level, are the result of a complex interaction of the physical characteristics of the chimney of the plant, the physical and chemical emissions, weather conditions at the site, or about the same during the time required to move the emissions from the boiler to the receiver at ground level, the topographical conditions of the plant site and surrounding areas, and nature of the receptors (eg ., humans, crops and native vegetation). Typically, clean cooling water is the most important effluent that comes from power plants. Can be recycled or discharged to the extent of surface water without causing major effects in terms of their chemical quality.However, it should be considered the effect of waste heat on ambient water temperature during the evaluation of the plants that provide for use, without recycling, water cooling. A small increase in environmental water temperature can alter radically, communities of plants and wildlife. The other effluent produced by thermoelectric projects are less abundant, but they can cause, greatly, the water quality. For example, effluent from coal-fired power plants contain the wash water cooling system, boiler, of demineralized resin regenerator, the remover of ash and runoff from coal piles, ash and yard and other low-volume discharges caused by accidents or spills. They are different combinations of metals and other chemicals in the wastewater. In plants with fuel oil spills have a negative impact on water quality.As some of the impacts can be completely avoided, or mitigated more successfully, at lower cost, if the site is chosen wisely Main article: Industrial Park (location)