Air dispersion modelling of gas turbine power plant emissions in Makassar by using AERMOD

Abstract

Activities at PT. PLN (Persero) Makassar Tello Sector especially Gas Turbine Power Plant produces exhaust emissions that can be pollution for the environment if the quality is not monitored. Therefore, an analysis of the pattern distribution of exhaust emissions in Gas Turbine Power Plant needs to be done to determine the concentration produced and dispersion pattern and direction of its spread. The modeling in this study uses AERMOD software and requires meteorological support data and ground elevation to run the software. The results showed that the distribution of SO2, NO2, CO, and particulates gas pollutants was in line with the dominant wind direction found in windrose. The concentration received by the receptors is very small and does not exceed the ambient air quality standards based on South Sulawesi Governor Regulation Number 69 of 2010 which is 365 μg/Nm3 for SO2, 150 μg/Nm3 for NO2, 10,000 μg/Nm3 for CO, and 230 μg/Nm3 for particulates. Thus, the impact received by the receptor is not felt directly.