Finishing Chemical Wastes
finishing chemicals - Do You?
Keep product lids secure and closed tightly to prevent spills and
Store containers off the ground and in an area where they won't
corrode. (Store over
spill containing pallets when possible.)
Remember that any water contaminated with such chemical waste becomes
Ask your local painting supply company about regulations in your
area, recycling opportunities and proper disposal methods.
Cutting fluids - Do You?
Conserve as much as possible.
Filter solid matter that builds up in fluid.
Follow all manufacturers recommendations on
fluid use and maintenance.
Research and choose the optimum fluid for your
common processes and materials
Select a fluid which may be easily recycled
or select a fluid that is least harmful to the environment.
coating materials - Do You?
Determine if coating material is hazardous. Dry paint may not be
Use coating with high solid content (usually 35% or more), as they
require fewer coats.
Teach students proper and efficient application techniques.
Consider water-based coatings.
Buy only as much as you need.
and solvents - Do You?
Solvents can be expensive, treat them so and conserve them.
Consider less hazardous strippers when possible.
Reuse solvents and strippers (use dirty solvent to first loosen
metal coating and then proceed with fresh; filter solvents to prolong
you must dispose of strippers and solvents: use a legitimate recycling
facility or permitted hazardous waste treatment facility.
- Do You?
Reuse rinse water for metal working processes
Dry wipe or brush pieces before rinsing to prolong the life of your
Remember never to put waste water down a storm drain, sump or septic
system. Inquire with your local water authority and follow
their recommendations. This waste water could be put into a
municipal treatment system.
Metal Finishing Chemical Wastes (cont.)
(sawdust, kitty litter and others) -
Remember that absorbents used to absorb hazardous materials will
become hazardous and require special disposal.
Use drip trays and pans to prevent spills.
Use squeegees to recover product and cleanup spills
Use rags that can be “wrung” out to recover product.
towels/rags - Do You?
Avoid disposable shop rags and use a shop towel recycling service
Wring out shop towels to reclaim solvents and other products (use
proper personal protection e.g., gloves).
Avoid chemicals which may hinder laundering of shop towels (e.g.,
perchloroethylene and toluene).
Keep clean and dirty shop towels separate and well-labeled containers.
cans - Do You?
Return defective cans to supplier; do not throw away.
Use refillable spray canisters for cutting fluids.
Remember that only totally empty cans may be landfilled.
- Do You?
Efficiently cut and use
metal to get the most from each piece.
Reuse scraps for future projects.
dust and shavings - Do You?
Always wear personal protective clothing and respirator when when
working around metal dust
Collect shavings/dust and store in a bucket. (Check with metal recycler
for possible recycling.)
Try to keep metal shavings out of sump and drains.
Containers and Packaging of Metal Working Supplies
- Do You?
Return empty containers
to the distributor for re-use when possible
Train students to scrape paint containers clean so they are lawfully
Reuse and recycle paper and cardboard as recommended under General
Buy products with as little packaging as possible.
Separate reusable and recyclable packaging materials from those
that can only be disposed of.