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Case Studies: Reducing Drag-out losses reduces economic and environmental costs
| Reducing Drag-out losses reduces economic and environmental costs
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INTRODUCTION
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This small company of 15 staff coats metal parts with hard chromium on top of nickel. The metal plating line is automated to move the parts from one bath to the next: degreasing, bright nickel, semibright nickel, pickling, and chrome bath. Between the tanks are rinsing sealed water tanks and continuous rinsing.
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FINANCIAL DETAILS
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Investment Amount:
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US $3,525 |
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Estimated Time to Recover Investment:
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N/A |
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Estimated Life Cycle of the Investment:
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10 years |
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Finance Sources:
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N/A |
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TECHNOLOGY
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Technology Used:
The assessment methodology used was the Minimization Opportunities Environmental Diagnosis (MOED). This methodology allowed the company to determine that drag-out losses were 2.4 times the theoretical loss level. A redesign of the mechanism which transports the materials to be coated from bath to bath removed parts that hindered the drainage of bath substances after the materials were removed from the bath.
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Technology Provider:
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| TECHNOLOGY FEASIBILITY ANALYSIS: |
Technical feasability analysis:
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Economic feasability analysis:
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Environmental feasability analysis:
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Environmental assessment:
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ENVIRONMENTAL BENEFITS
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Benefits: Reduced Water Pollutants
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Details:
Annual savings:
Chromic acid - 480 kg (1,058.2 pounds), or 12% reduction;
Nickel chloride and nickel sulphate - 945 kg (2,083.3 pounds), or 30% reduction;
Boric acid - 360 kg (793.7 pounds), or 60% reduction;
Sulfuric acid - 360 kg (793.7 pounds), or 14% reduction;
Degreasing agents - 596 kg (1,313.9 pounds), or 6% reduction;
Water - 6,814 m3 (8,912.4 cubic yards), or 60% reduction.
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