KAJIAN LINGKUNGAN DAN PEMODELAN DISPERSI SO2 DI UDARA PADA PLTU 1000 MW DENGAN MENGGUNAKAN MODEL GAUSSIAN PLUME; ENVIRONMENTAL STUDY AND SO2 DISPERSION MODELING OF 1000 MW COAL POWER PLANT BY USING GAUSSIAN PLUME MODEL

Baturante, Nur Jannah, Eko Sugiharto

2015 | Disertasi | FMIPA

Gaussian plume model was used to model the SO2 dispersion of 1000 MW coal power plant. This study used seven scenarios to figure out the effect of meteorological condition, effluent chemical and physical condition, and pollutant source physical condition to SO2 dispersion which result from coal burning in power plant. Those scenarios are emission rate, atmospheric stability, wind speed, height and diameter of stack, gas exit velocity, and gas exit temperature. The result showed that the increase of sulfur in coal increase ground level concentration of SO2. Decreased of atmospheric stability, caused the increase of SO2 ground level concentration that closer to the pollutant source. Height and diameter of stack, gas exit velocity, and gas exit temperature showed similar effect. Sulfur dioxide ground level concentration decreased and occured closer to the pollutant source, caused by the increase of those parameters. The highest SO2 ground level concentration resulted from coal with 0.5% sulfur, highest emission rate 852.25 g/s and in the most unstable atmospheric condition, 113.63 ?g/m3. The value has exceeded the threshold and gave negative effects on human and the environment.

Kata Kunci : Gaussian Plume; emission rate; ground level concentration; coal; SO2 dispersion.