Hazardous waste
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Hazardous waste



Hazardous waste

Hazardous waste



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Hazardous waste Presentation Transcript

  • 1. Hazardous wastes may be: liquid, solid or gas toxic highly corrosive explosive
  • 2. Examples: Insulation, plastics, lubricants Pesticides Cleaners Metals - lead, mercury, zinc radioactive wastes.
  • 3. U.S. did not address hazardous waste issues until 1980’s.safe disposal is expensive companies dumped it illegally to save $$$.
  • 4. Comprehensive Environmental Response, Compensation, and Liability Act of 1980Commonly referred to as the Superfund Act.
  • 5. GOAL: Nationwide programaddressing serious threats from hazardous wastes. Made polluters pay for cleanup.
  • 6. Superfund gave EPA the right to: to Sue responsible parties for the release or potentialrelease of hazardous wastes and make them clean up or pay for clean up of the site.
  • 7. Potential Responsible Parties: Current and former site owners Operators of the site Anyone who disposed of or produced waste found at the site
  • 8. Superfund Trust Fund –financed by taxes on Chemical and petroleum industries What happens when no responsible party can be identified?Clean-up costs are taken from 8.5 billion Superfund Trust Fund.
  • 9. The Story of the Love Canal in Niagara Falls, NY HookerChemical Co., City of Niagara Falls & U.S. Army dumped toxic chemicals into abandoned canals. Schools and homes were built over the dumpsite.
  • 10. Love Canal Story Continued: 1976heavy rains caused chemicals to leak, rise to surface and seep into basements. 1978– 1980, federal emergency declared – 950 homes evacuated
  • 11. Love Canal Story Continued: Dumpsite covered with a clay or synthetic cap and special drainage system Hooker Chemical Co reimbursed EPA Superfund $128 million; U.S. Army $8 million
  • 12. 1. Produce less of it
  • 13. 2. Reuse – Ex. Dow Chemical reuses a solvent several times.
  • 14. 3. Biological treatment – bacteria used to break down hazardous waste into harmless products.
  • 15. 4. Physical Treatment – using physical processes to remove hazardous wastes. Ex. Evaporation, distillation
  • 16. 5. Chemical Treatment – using chemicals to make wastes harmless
  • 17. 6. Deep-well injection: wastes pumped deep into ground & absorbed into rock below groundwater.
  • 18. 7. Drums buried underground What’s wrong with this picture?
  • 19. 8. ship to poorer states or developing countries with less stringent laws.
  • 20. 9. Incinerate
  • 21. Hazardous Wastes at Home: Collection sites forchemicals, oils, batteries (for recycling) FYI - 2 L of old oil canmake 1,000,000 L of fresh water undrinkable!
  • 22. End Slide Show!