Product Electrolytic Recovery Additional free information on any of these items can be obtained by circling the appropriate number on the reader service card.

Heavy Metal Recovery Electrodialytic System U. S. FiltetNarrendale lonsep Corp. Inc. Warrendale, Pa. Rockland, Del.

U.S. Filter/Warrendale’s Retec Systems are uaed to recover copper, cadmium, gold, silver, nickel, zinc, and other heavy metals. Retec systems recover metals from rinsewaters (drag-out or stagnant rinses), ion exchange regenerants, water going to ion exchange units. and spent baths. Metal recovery of less than 1 ppm is pos- sible in many cases. Specially designed Retec systems are also available for acid recovery and purification.

Ionsep Electrodialytic Systems enable consistent metal finishing by continuously removing contaminants and con- stantly remaking the process chemicals. Ionsep processes reduce chemical purchases, minimize waste treatment, and improve manufacturing quality. Ionsep systems reform chromic, nitric, sulfuric, and phosphoric acids, sodium hydroxide, proprietary formulations, and electroless nickel solutions; feature a small footprint and low operating costs; and can be automated for reduced labor.

Circle 150 on reader information card

Cyanide Oxidation System with Metal Recovery Covo Corp. Sarasota, F/a.

Covo Corp. has developed a new system for automatic oxidation of cyanide waters with simultaneous recovery ol gold, silver. and copper from sterling silver and low karat gold bright dipping (bombing) solutions. The equipment consists of drag-out tank; separator, holding. and recovery tanks; electrolytic recovery unit: through-flow oxidation and pH adjusting reactor: and a metering system. The operation is fully automatic. The water discharged from the system complies with EPA discharge limits. COW Corp. manufactures customized systems to accommodate differ- ent .jewelry production capacities.

Circle 151 on reader information card

Circle 152 on reader information card

Electrowinning Systems Remco Engineering Ojai, Calif.

Remco Engineering’s Barrel Plating or Parallel-Plate- Type Electrowinning Systems remove metals to very low levels. They are suitable for treating batch dumps or regenerant from an ion exchange system. Compact. ef- ficient, and easy-to-operate, these low-cost systems min- imize waste treatment expense.

Circle 153 on reader information card

METAL FINISHING . JULY 1998 0 Copyright Elsevier Science Inc. 15