Top Tips for Pollution Prevention for Metal Fabrication Facilities
The following ideas have been used in metal fabrication shops around the
state to prevent pollution.
- Extend machine coolant life to reduce waste.
- Keep contaminants out of coolant sumps.
- Use biocides such as silver to reduce bacteria.
- Remove oils and metal chips from coolant periodically.
- Sanitize sumps and equipment periodically.
- Drain metal chips completely and recycle chips and coolant.
- Use countercurrent rinses and multiple rinse stages.
- Reduce bath drag-out by slowing withdrawal of parts from bath.
- Optimize orientation of parts on racks.
- Maximize drip time (at least 20 seconds).
- Use drain boards between tanks.
- Use fog spray rinsing.
- Use air knives or squeegees to wipe bath solutions off part.
- Use minimum bath concentrations.
- Reduce wastes from cleaning operations.
- Reduce the need to clean.
- Extend cleaner life.
- Maximize the efficiency of the cleaning system.
- Use less toxic cleaners.
- Reduce painting wastes.
- Reduce plating wastes.
- Reclaim solvent for reuse.
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