Sulfur dioxide regulations governing emissions

Other factors which have a significant influence on process selection iaclude absolute quantity of sulfur present, concentration of various sulfur species, the quantity and concentration of other components ia the stream to be treated, quantity and conditions (temperature and pressure) of the stream to be treated, and, the location-specific environmental regulations governing overall sulfur recovery and allowable sulfur dioxide emissions (3). 

National Ambient Air QuaHty Standards (NAAQS) have been estabHshed for ozone (qv), nitrogen oxides, lead (qv), carbon monoxide (qv), sulfur dioxide, and particulates. The standards have been set to safeguard human health and the environment. Many areas of the country violate one or more of the NAAQS. To achieve healthful air for all citizens, the states estabHsh an implementation plan for each area that violates the NAAQS for any of the six criteria pollutants. The plan is a strategy designed to achieve sufficient emission reductions to meet the NAAQS within the deadline. Based on the implementation plan, specific regulations are written which govern the operations emitting the pollutant. 

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