Abstract:
Verification of the applicabilityof an effective air quality model in Bangladesh condition,
especially for brickfie1dpollution was the main concern of this thesis work. To achieve
that objective, ambient pollutant concentrations were measured experimentally and
compared with the results generated through modeling using Industrial Source
Complex (ISC3) model. Then the model was applied to predict ambient air pollution
loads under different circumstances.Air sampling was done at different locations in a
cluster of brickfields of 41 brick kilns near Amin Bazar, Savar using Gastec tubes and
High volume sampler. Gastec tubes were used for gaseous pollutants and High volume
sampler was used for Total Suspended Particulates (TSP). Gaseous pollutants included
Sulfur dioxide, Carbon monoxide, and Hydrocarbons. Effects of meteorological
conditions, stack height, and stack exit velocity on the ambient pollutant concentration
were analyzed for multiple pollution sources over a long period of time by using this
model, after successful verification of its acceptability. Significant effect of the
meteorological conditions on ambient air quality was observed. Effectiveness of
increase in stack height to reduce air pollution was also analyzed. Increased stack
height was found effective in reducing average ambient concentration up'to a certain
stack height. Beyond that stack height, change in ambient pollutant concentration with
the increase of stack height was found to be insignificant. Stack exit velocity was found
to have negligible influence on the ambient air quality at the surroundings of the
sources but effect in the cluster area was prominent. In brief, Industrial Source
Complex (lSC3) model was found very effective and appropriate both for gaseous
pollutants and particulate matter for brickfield pollution in Bangladesh and its different
utilizations were exercised successfully in this thesis work.
