Solid and Hazardous Waste PPT. Notes
- Largest landfill closed in 2001
- New York wants to transform it into a park
- Waste: Any discarded material with no further use
- Solid waste: unwanted material that is not a liquid or gas
- Municipal solid waste : Produce directly From Homes
- Industrial solid waste: Produced indirectly by industries
- Waste stream: Flow of waste as it moves from the source
- Recycling: sends used goods to manufacture goods
- Composting recovery of organic waste
- 251 million tons of waste in 2006. Only 32.5 % recycled
- Paper and paperboard was 41% of the waste
- E-waste consists of toxic and hazardous waste
- U.S Produces half the world's e-waste
- 10% of e-waste was recycled
- Since 1960, waste has increased 2.8 times
- U.S sells trash to china for recycling
- 98.5% is industrial waste
- 1.5% is msw
- MSW leak toxic liquids in the soil
- Sanitary Landfills: Waste buried in the ground
- Subtitle, of RCRA regulates non hazardous waste.
- Landfills protect groundwater, surface water, and air quality
- Landfills control pathogenic migration
- –Underlying soils
- –Depth to groundwater
- –Landfill liner (triple liner)
- –Leachate collection system
- –Leachate prevention through infiltration and drainage control
- –Cover soil and final landfill cap
- Limit of refuse filing determines volume of waste
- Liner acts like a giant garbage bag
- Leachate is liquid that is migrated from a land disposal site
- MSW is burned in 1000 large waste-to-energy incinerators
- Bacteria decompose waste
- Landfill gas is a mix of gas consisting of half methane
- We can reduce solid waste through refuse, reduce, reuse, repurpose, recycle
- Primary recycling: Materials turned into new products which are sort of the same
- Secondary Recycling: Materials turned into different products
- Recycling plastics is environmentally and economically hard
- Compost=pile of organic debris
- Hazard waste is costly so companies just illegally dump it
- EPA clean brownfields
- Polluters pays principle: polluting parties are charged for cleanup
- Two laws regulating waste management: RCRA and CERCLA
- Deep-well disposal: Hazards are pumped with pressure under aquifers
- Phytoremediation is a term in which plants can be used to clean up contaminated areas