ADVANCED AIR QUALITY

A Permit by Rule (PBR) Application for an Interior Surface Coating Facility

BOBBY MYERS

Columbia Southern University

Abstract

Environmental pollution is caused by various activities. For instance, the car industry is a major contributor to the contamination that takes place on a daily basis. For example, smoke emissions, car spraying, tire burning, and the burning of fuel like petrol or diesel are some of the activities that lead to environmental pollution. Car spraying, for example, is a primary cause of contamination. This paper will focus upon the amounts of spray content used per, rates of emission, determine the health effects associated with air pollution, their impact on the environment, and effective ways of curbing the contamination.

A Permit by Rule (PBR) Application for an Interior Surface Coating Facility

General Considerations for Operation

Face Velocity

Face velocity is the procedure whereby there is sufficient speed movement of air in the booth to enable it trap solvent emissions and particulate substances, therefore, is removed through the filters of a stack exhaust (Godish.,Davis., & Fu 2015). The face is referred to as the section whereby intake air goes in. The calculations of face velocity should consider the following:

1.0 The rate of make-up unit through which air run flows in cubic feet per minute.

2.0 The flow rate of exhaust fun in ft or cfm

3.0 The operation procedure entire opening section of the booth.

Calculations of either circular or rectangular opening are:

Circular

Area=

Rectangular

Area= Length x Width

A= 5m x 4m = 20m2

If the booth features numerous openings, the overall area will be derived by addition of each section. The air makeup flow rate and exhaust booth fun units will be subtracted:

Flow rate = exhaust fun flow = unit of air make up the flow rate

Thus, face velocity= total intake area/flow rate.

Filter velocity

Filter velocity can only be determined if slow-moving air is sufficient through filters in such a way that the drop of pressure is sustained and allowable in each filter, along with capturing particulate substances.

Method

To determine filter velocity, the calculation below must be made;

The exhaust fun flow rate in f3/min.

The booth filter area.

The booth including numerous filters will have its net area determined by the addition of areas of different booths Region (T. C. E. Q., Paso, E., Rubinstein, C., & Area, T. B., 2007).On the basis of the fact that the booth is comprised of the air makeup equipment and exhaust fun, the exhaust fun flow rate will be utilized as the net air that shifts into the booth will originate from the exhaust fan.

Flow rate = exhaust flow rate

Filter velocity= rate of flow/ total filter area

Thus, filter velocity = 15/20 = 0.75m3/s

VOC and ES Content per Vehicle

The calculations in this section are based on the provisions of Texas Car Body Repairs development team (T. C. E. Q., Paso, E., Rubinstein, C., & Area, T. B., 2007). The Exempt Solvents (ES) and Volatile Organic Compounds (VOC) for each automobile is: 10 gallons of coating per vehicle:

· The calculations in this section show the amount (lbs.) of VOC in the pre-mixed thinner/coating that will be utilized in the inner liner coating substance.

· 2.8 lbs, gal of VOC x 10 gal/vehicle = 28.0 lbs of VOC per vehicle.

· The calculations in this section show the amount (lbs) of ES that are in the pre-mixed thinner/coating.

· 2 gals of solvent per vehicle x 0.5 lbs. per gal = 1.0 lbs. ES per vehicle.

The information that the facility will submit for the application of the air permit in regards to ES and VOC amounts are; 1.0 lbs. ES per vehicle and 28.0 lbs VOC per vehicle. The findings were on the basis of the calculations made in this section

Operational Air Emission Rates

The following calculations are made on the basis pf the specifications by the Texas Car Body Repair design team (T.C.E.Q., 2011). The rates of emission averaged across a 5-hour duration and a work week of 4 days.

Inner Liner Coating Material Content: 28.0 lbs. VOC/vehicle

Exempt Solvent composition: 1.0 lbs. ES/Vehicle

Peak Hourly Rate and Yearly Emission Rates:

VOC for two vehicles – hourly rate and yearly emission rate:

· 28 lbs. VOC/Vehicle x 2 automobiles= 56.0 lbs VOC each day.

Hourly: 56.0 lbs. VOC/day/ 1 day/ 5 hours= 11.2 lbs. VOC per hour.

Weekly: 56.0 lbs. VOC/day x 4 days per week= 56 x 4= 224.0 lbs. VOC per week.

Yearly: 224. lbs VOC/weeks x 52 weeks= 11, 648.0 lbs VOC per year.

ES for 2 automobiles- hourly and annual emission rate;

· 1.0 lbs ES/vehicle x 2 automobiles= 2.0 lbs per day.

Hourly:2.0 lbs ES/vehicle/ 1 day/ 5hours= 0.4 lbs ES/hr.

Weekly: 2.0 ES/day x 4 days/week == 8.0 lbs per week.

Anually: 8.0 ES/week x 52 weeks per year= 416.0 ES/year.

Potential to Emit (PTE): ES and VOC calculations are based on annual tons (1 ton = 200lbs.)

VOC: 11,648 lbs./year/2000 lbs. = 5.82 tons VOC per year.

ES: 416.0 lbs. ES/year/2000 lbs.= 0.21 tons ES per year.

To secure an air permit, the facility should comply with the TCEQ-guidelines set for emission rates. PRRR, 30 TAC 106.433 (6)(A) articulates that the facility cannot have a surplus of six pounds of VOC emissions each hour; the emissions are averaged over give-hour periods and five hundred pounds each week on the basis of enclosed work area or booth. The facility will be utilizing 11.2 lbs, which means that it is within the required restrictions. The average VOC per hour for two booths is 5.6 lbs. Further, the two booths consume 224 lb. of VOC each week, which averages to 112lbs. per booth each week. The facility must keenly observe the VOC emissions to ensure that it stays within the required level (T.C.E.Q., 2011).

The Potential to Emit is the standard that states the permitted peak capacity for a source to discharge any kind of air pollutant from such a facility (T.C.E.Q., 2011). If the emission is higher than 100/ton per year, the facility will be mandated to secure a Title V permit for operations. Based on the figures of 5.82 tons VOC annually, the facility will not be mandated a Title V permit since they do not reach 100 tons of VOC per year. Finally, they are shifting towards the right path with the process of air permit application.

References

Fischer, C. (2010). FROM THE TRENCHES.

Godish, T., Davis, W. T., & Fu, J. S. (2015). Air quality (5th ed.). Boca Raton, FL: CRC Press.

Region, T. C. E. Q., Paso, E., Rubinstein, C., & Area, T. B. (2007). Texas Commission on Environmental Quality. target

Texas Commission on Environmental Quality. (2011). Surface coating facilities: A guide for

obtaining air authorization in Texas. Retrieved from