Environmental Engineering in CE
Peroxyacyl nitrate (PAN), a pollutant is found in the

Automobile exhaust
Exhaust of nitric acid plant
Flue gas of coal based power plant
Exhaust of sulphuric acid plant

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Environmental Engineering in CE
Aerobic biological oxidation ponds used for the purification of polluted water

Destroys/removes pathogen much more effectively if the sewage is chlorinated
Destroys/removes pathogen from the sewage
Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents
All of these

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