Electroplating P2 Pollution Prevention Program FDEP

Electroplating P2 Pollution Prevention Program FDEP

Introduction Types of electroplating Opportunities for pollution prevention Pollution Prevention Program FDEP

Types Chrome (hard vs. decorative) Nickel (corrosion) Zinc & cadmium (corrosion) Copper, tin, gold (conductivity) Aluminum anodizing Pollution Prevention Program FDEP

P2 Opportunities Improved housekeeping Reducing drag-out Improved rinsing Improved controls Metal recovery Less hazardous chemicals Pollution Prevention Program FDEP

Improved Housekeeping Repair leaks Train personnel Remove anodes when not in use Remove fallen parts Keep the floor dry Pollution Prevention Program FDEP

Drag-out Reductions Use drip boards Increase hang time Use optimum positioning Reduce part withdrawal rate Lower bath concentration Use a wetting agent Use fog or spray rinses Increase solution temperature Pollution Prevention Program FDEP

Improve Rinsing Efficiency First step establish baseline 1. Determine drag-out volumes 2. Determine rinse water rates 3. Establish rinse criteria Pollution Prevention Program FDEP

Improved Rinsing Efficiency Counter current rinsing Mechanical agitation Flow controls Conductivity controls Pollution Prevention Program FDEP

Metal Recovery Evaporation Ion exchange Reverse osmosis Electrowinning Pollution Prevention Program FDEP

Less Hazardous Chemicals Low and no cyanide baths Trivalent vs. Hexavalent chrome Advanced technology Pollution Prevention Program FDEP

Conclusions Changes simple to complex – Water conservation – Chemical conservation and reuse – Advanced alternatives Room for improvement in all shops Pollution Prevention Program FDEP