A stack source (30 m height above ground) located in a rural area emits 350 g/s

Question

A stack source (30 m height above ground) located in a rural area emits 350 g/s of SO2 into the ambient air. At a time, the wind was observed blowing from due south with a speed of 5.5 m/s at the anemometer height of 10 m. The atmospheric stability class was determined to be “D”.

a. Without considering ground reflection and plume rise, what was the ground-level SO2 concentration in µg/m3 at a receptor of 1,000 m downwind and 10 meter from the centerline?

b. Was health risk a concern? Please provide your justification.

Explanation / Answer

A) The concerntration of the sulphur dioxide at The1000 m down wind can be Determined as follows

The graph ahown here is having the x axis( vertical) and y axis ( horizontal) the x axis is of wind while the y axis is of the concerntration of the sulphur dioxide emissions source.

Now amount of so2 is as= (350*5.5*1000)/10

=1.92µg/m3

B) Yes, in this situation the health risk is concerned. It is because to the fact that sulphur dioxide is very much harmful to the human health and other living organisms in this earth. The continue emissions of sulphur dioxide will lead to the contamination of the atmosphere to a great extent. It will create disease like lung cancer and many other adverse effects to our health so it should be a concern of health risk and issues.

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