Pollution Prevention and Control Technologies for Plating Operations

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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

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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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