Hazardous waste


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Hazardous waste

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Hazardous waste

  1. 1. Hazardous wastes may be: liquid, solid or gas toxic highly corrosive explosive
  2. 2. Examples: Insulation, plastics, lubricants Pesticides Cleaners Metals - lead, mercury, zinc radioactive wastes.
  3. 3. U.S. did not address hazardous waste issues until 1980’s.safe disposal is expensive companies dumped it illegally to save $$$.
  4. 4. Comprehensive Environmental Response, Compensation, and Liability Act of 1980Commonly referred to as the Superfund Act.
  5. 5. GOAL: Nationwide programaddressing serious threats from hazardous wastes. Made polluters pay for cleanup.
  6. 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. 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. 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. 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. 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. 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. 12. 1. Produce less of it
  13. 13. 2. Reuse – Ex. Dow Chemical reuses a solvent several times.
  14. 14. 3. Biological treatment – bacteria used to break down hazardous waste into harmless products.
  15. 15. 4. Physical Treatment – using physical processes to remove hazardous wastes. Ex. Evaporation, distillation
  16. 16. 5. Chemical Treatment – using chemicals to make wastes harmless
  17. 17. 6. Deep-well injection: wastes pumped deep into ground & absorbed into rock below groundwater.
  18. 18. 7. Drums buried underground What’s wrong with this picture?
  19. 19. 8. ship to poorer states or developing countries with less stringent laws.
  20. 20. 9. Incinerate
  21. 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. 22. End Slide Show!
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