Solvent recovery operation in the automobile industry. Categorize the following
ID: 803696 • Letter: S
Question
Solvent recovery operation in the automobile industry. Categorize the following solvent recovery operation in terms of the waste management hierarchy. (which is 1. Source reduction 2. In-process recycle 3. On-site recycle 4. Off-site recycle 5. Waste treatment 6. Secure disposal 7. Direct release to the environment) Discuss the pollution prevention features of this process. Assess whether this process is pollution prevention.
Process Description: The automotive industry uses robots to paint automobile bodies before attaching them to the chassis and installing other components such as the drivetrain, lights, trim, and upholstery. In order to accommodate different colors, the paint lines must be flushed with a solvent and then recharged with the new color of paint. In the past, this solvent and paint residue was disposed of as hazardous waste or incinerated. The current process of spray painting automobiles uses a closed-loop solvent recovery process.
Explanation / Answer
1)Source reduction : Reducing the pressure for the automotive purge cycle.
*) Shortening the length of the paint lines that had to be purge.
*)Reducing color change frequency.
*)Control of waste exchanges.
2)In - process recycle : Given that using paint so the concept is paint, so the In process recycle in painting are *) storing leftover paint for touch ups.
*)place all solvent wastes in a drum and place a lid to prevent the harmful gases to release into the air.
*)paint wastes : rigid inventory control to reduce thinner use.
*) Only needed paint is used ie sufficient paint is used for use.
*) Provide operator training .
*) Practise proper equipment cleaning methods and use enclosed cleaners.
*) Selter house keepint to reduce oil spills and leakages.
*) recycle solvent onsite.
*) Make leftover paint available to customers.
3) Onsite recycle: Voc emissions : Use high transfer efficiency equipments.
*) Use enclosed cleaning devises.
*) Use low coating VOC.
*)less waste leaving the shop.
*) Owners control of reclaimed solvents purity
*) reduced liability.
*) reduces in reporting.
4)Offsite recycling : protecting the parts during transportation and storage.
*)efficiency of packaging.
*)shop cleanup using high transfer efficiency equipment.
*) Use sityrofoam filters.
8) manage waste automotive waste fluids properly.
5) waste treatment : Body repair : Filler waste is the main waste and it can be treated as follows.
*)Rigid inventory control to minimise bondo use.
*)sweet or vacuum up .
*)dont flush to street or clarifier.
Painting : Paint waste is the main waste.The treatment is *) Rigid inventory control to reduce thinner use.
*) selter house keeping to reduce leaks and spills.
*) practise proper equipment cleaning methods use enclosed cleaners.
*) Use high transfer efficiency equipment.
*)recycle solvent onsite.
Voc emissions can be treated as *) use high transfer efficiency.
*)use enclosed cleaning devises.
*) use low VOC coatings.
sooth filters: use high transfer efficiency equipment.
*) use sytyrofoam filters.
6) Secure disposal : 8) solvent based paints may deprive aquatic organism of oxygen.
*) may cause tumors, to form in arrivals such as fists.
*) use leftover.
storing leftovers.
place all solvent wastes in a drum and place a lid.
7) Reduction, reuse , recycling of all plastic wastes.
*) reduction , reuse, recycle of waste water , paint sludge
*) reduce , reuse, recycle paper, cardboard , packing wastes from all sources.
*) balancing materials.
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