AIR QUALITY MODELLING IN DOON VALLEY

Abstract

An attempt has been made to study various lime kilns in and around Doon Valley. *Short term sulfur dioxide concentration isopleth have been worked out for Respina and Malsi area. The preent studies have revealed two remarkable facts ; 1., Only 4-5% of sulfur content in coal is emitted by the lime furnance into the environment as sulfur dioxide and the balance is chemisorbed by lime-stone/lime. 2. The concentration of sulfur dioxide that is finally emitted from the furnance attains a high value of the order 40-45 ppm for a very short duration. Most of the sulfur dioxide is emitted within 2-3 hours of firing of furnance. Immediate, short term and long term remedial measures have been proposed