Electroplating P 2 Pollution Prevention Program FDEP Introduction

Electroplating P 2 Pollution Prevention Program FDEP

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

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

P 2 Opportunities Improved housekeeping l Reducing drag-out l Improved rinsing l Improved controls l Metal recovery l Less hazardous chemicals l Pollution Prevention Program FDEP

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

Drag-out Reductions l l l l 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 l 1. Determine drag-out volumes l 2. Determine rinse water rates l 3. Establish rinse criteria l Pollution Prevention Program FDEP

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

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

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

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