TAILIEUCHUNG - Lecture Environmental science - Chapter 18: Municipal solid waste: Disposal and recovery

Sustainability in natural systems is built on the closed-end process of recycling materials. Our present society produces so much that is not recyclable, like resin-molded chairs and air polluting automobile tires, that it is necessary to apply intention to source reduction and product responsibility. Chapter 18 provides knowledge of municipal solid waste and how to disposal and recovery. | Chapter 18 Municipal Solid Waste: Disposal and Recovery All materials thrown away from homes and commercial establishments; note the PLASTIC!!!!!! Where does it go? => Landfill => Combustion => Recycling Sanitary Landfill Done Right Methane can be captured and used as a fuel Line with impermeable clay to prevent leachate from polluting ground H2O Cover daily with “clean fill” to reduce odor and pests Monitor peripheral wells for contamination Why would a city want a landfill? Environmental reasons: Decreases fuel cost for transport Stringent stand and yield positive results Current standards are better than old ones Trucks leak when transporting waste Monetary reasons: Cities must pay dumping fees Make $ from the methane Jobs Increase revenue from recycling . Municipal Solid Waste Composition Rethink “waste” Nature reuses everything and so should we. Disposal (Recycle ) Landfills (Recycle ) Combustion: DIOXIN - Waste of Energy Cost; If it’s not “a” waste; “cost” to recycle lower; “cost” to dispose of is reduced or eliminated. Recycle or Die The Ocean Gyre Trash Vortex A mass of PLASTIC trash TWO TIMES the size of Texas! Trash gone wrong Ocean gyre from space Trash inside the ocean gyre Trash inside a dead baby Albatross Cleaning Up: - Ships would haul filters out in the ocean, drag it back to shore and repeat each step to clean the trash gyre. The cost would be prohibitive! The Gyre Important solutions to ocean pollution problems: Use biodegradable plastic Ban the worst type of plastics ( hard to degrade ) Clean up the trash currently in the gyre Clean up your nearby beach Recycle!

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