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Pollution Preventionfor Paint & Body Shops
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There is always a better way!There is always a better way!
Types of Waste
• Paint
• Paint filters
• Paint solvents
• Masking
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There is always a better way!There is always a better way!
Types of Waste
• Used coolant• Used oil• Oil filters• Spill dry• Shop rags• Cleaning solvents• Spray solvent
• Washwater• Refrigerants• Scrap parts• Batteries• Tires
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There is always a better way!There is always a better way!
Transfer Efficiency
• How much paint actually coats surface vs. paint sprayed
• Benefits– Buy less paint– Replace filter less frequently– Easier and less booth clean-up
• Factors: training, equipment, maintenance, geometry
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There is always a better way!There is always a better way!
Paint Formulation & Mixing
• Solids content
• Water-based primers (& topcoats?)
• Don’t add excess thinner
• Better estimate amount needed
• Provide excess as touch-up paint
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Paint &Paint &
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There is always a better way!There is always a better way!
Paint Equipment
• Spray guns– conventional– High-Volume Low-Pressure– air-assisted airless
• Electrostatics
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Paint &Paint &
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There is always a better way!There is always a better way!
Painter Training
• Clean and maintain equipment
• Minimum air pressure for correct atomization
• Perpendicular to surface (no arcs)
• Uniform distance,speed, and overlap
• Personal Protective Equipment
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Paint &Paint &
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There is always a better way!There is always a better way!
Paint Booths
• Painting and priming in booth
• Filter intake air and exhaust air
• Keep booth clean– no other work (e.g. sanding)– damp clean– no drain holes to ground– dust off workers entering
• Design criteria
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Paint &Paint &
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There is always a better way!There is always a better way!
Paint Booth Filters
• Increase transfer efficiency
• Use non-hazardous paint
• Use graduated density filters
• Use baffles in front of filters
• Use Styrofoam filters
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Paint &Paint &
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There is always a better way!There is always a better way!
Line Cleaning
• Schedule painting from light to dark
• Use paint cups or shorter lines
• Blow paint out of lines and reuse
• Use “dirty” solvent for first cleaning
• Use recirculating gun washer
• Evaluate distillation unit
• Water-based formulations
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Paint &Paint &
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There is always a better way!There is always a better way!
Washwater (from floor cleaning)
• Use better housekeeping and spill prevention
• Use less water– dry cleanup when possible– mop and bucket– high-pressure low-flow nozzle
• Use vacuum floor cleaner
• Watch out: emulsifying cleaner
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Paint &Paint &
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There is always a better way!There is always a better way!
Washwater (from vehicle cleaning)
• Wash only when needed
• Reuse– recirculating wash system– fresh water rinse as makeup water– old wash water for engine cleaning
• Watch out: emulsifying cleaners
• Covered collection pad
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Paint &Paint &
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There is always a better way!There is always a better way!
Hand Washing
• Wipe in rags first
• Solvents strip natural oils
• Are you on septic tank?
• Use gloves
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Paint &Paint &
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There is always a better way!There is always a better way!
Fluid Spills (“spill dry”)
• Prevent spills
• Practice better housekeeping
• Use drip pans
• Use absorbent booms ("pigs")
• Use reusable absorbents
• Investigate peat absorbent
• Wipe up as much as possible
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Paint &Paint &
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There is always a better way!There is always a better way!
Shop rags/towels
• Use inventory control
• Segregate from liquid wastes
• Use industrial laundry
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Paint &Paint &
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There is always a better way!There is always a better way!
Spray Cleaners (brake, carb...)
• Use only when needed
• Use inventory control
• Try pump sprays
• Use alternative cleaners
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PreventionPrevention
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Paint &Paint &
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There is always a better way!There is always a better way!
R12CFC
Refrigerants
• Repair A/C leaks
• Use recovery / recycle equipment
• Technician certification
• Use alternative refrigerant
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PreventionPrevention
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Paint &Paint &
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There is always a better way!There is always a better way!
Used and Scrap Parts
• Store properly– remove and collect fluids– keep out of the weather
• Recycle old parts as scrap metal– brake drums– tire weights– etc.
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Paint &Paint &
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There is always a better way!There is always a better way!
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