Emission from Thermal Power Plant having stacks of heights 100m and 275m

Abstract

Power is a basic demand of today's world, therefore many power plants are set up across the world to supply the demand of the power and they are of various different categories, Thermal power plant is one of the type of such plants uses thermal energy for power generation or to produce electrical energy. Despite having so many advantages thermal power plants are a threat to environment. Thermal power plant caused air pollution by emitting pollutant like PM, NOx, SOx, TPP are one of the examples of point source. Air pollution is a threat to environment, impact flora and funa and fine particles from industrial plants and numerous other sources are particularly dangerous to human health. Main pollutants from these plants are SOx, NOx, and PM. Ministry of Environment Forest and Climate Change (MoEF&CC) look after such plants and suggest measures, and set limits to emissions from these plants. MoEF&CC previously suggested that the height of 275m for the stack to emitted flue gas into the atmosphere, it got amended in 2017, suggested that power plant with a power generation capacity of mini 100MW or more with wet FGD system installed, should construct a stack of mini 100m height or H=6.902(Q*0.277)^0.555. Pollutant dispersion in the atmosphere varies as the stack height vary thereare max chances for worst condition the GLC from the same source will vary as the stack height varies. This study focused to found out GLC emission from the same plant for two different stack heights i.e., 100 and 275. A case study of Odisha Thermal Power Corporation Limited (OTPCL), the 2400MW(3*800MW)thermal power plant near Kamakhyanagr Dist. Dhenkanal, Odisha is taken, and results show that if the stack height is 275 the max GLC (worst case) obtained will be under National Ambient Air Quality Standard but for stack height 100m max GCL (worstcase) exceeding the NAAQ standard and huge air pollution will happen. Keywords Air pollution . Thermal Power Plant . Stack Height . AERMOD