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Pollution Prevention and Control Technologies for Plating Operations


Section 4 - Chemical Solution Maintenance

4.7 MEMBRANE ELECTROLYSIS

4.7.5 Costs
4.7.5.1 Capital Costs
4.7.5.2 Operating Costs


4.7.5.1 Capital Costs

Equipment costs for two different manufacturers of membrane electrolysis equipment are shown in Exhibit 4-31, based on their estimated removal capacity for iron from a bath containing 10 g/l of iron. Installed costs are approximately 5% to 20% higher than equipment costs.

4.7.5.2 Operating Costs

Operating costs for the membrane electrolysis technology are presented in Exhibit 4-32. These are based on the operation of units designed for the removal of 400 g/day of iron from chromic acid solutions containing 4 to 10 g/l of iron.


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