Download presentation
Presentation is loading. Please wait.
Published byLeo Gibbs Modified over 9 years ago
1
Solid and Hazardous Waste
3
Any solid unwanted material U.S. produces 11,000,000,000 tons per yr.
5
The Solid Waste Problem
7
Open dumps Ocean Dumping Landfills Exporting Incinerating Options for Disposal
9
Open Dump Common in developing countries, Illegal in developed countries. Drop off trash Dump in Chimalhuacán, Mexico Kids working in a dump in Tegucigalpa, Honduras
10
Problems with Open Dumps Disease! Rodent problems Groundwater pollution Organisms eat trash sick
11
Sanitary Landfills 1) 1)Dig a giant hole 2) 2)Line hole with plastic liner 3) 3)Place solid waste in hole 4) 4)Cover each day with 6” soil. Only NEWER ones have lining (15%) Possible leakage to groundwater if liner rips.
14
Bacteria break down solid waste methane. Pipes suck out methane and is burned to create electricity.
15
Disposal by Incineration AKA “Waste-to-Energy” Trash is burned heat is used to generate electricity 1000 plants in world (110 in US)
16
Incinerator Problems CO, PM, & heavy metals released Control devices must be installed; scrubbers/electrostatic precipitators, $$$ Ash produced landfills
17
Ocean Dumpin g 55,000,000 lbs of trash are dumped in sea every yr. 300,000 lbs of fishing gear.
20
Pacific Trash Gyre-Urban Runoff
22
Resource Conservation and Recovery Act Federal law in U.S. governing the disposal of solid and hazardous wastes. “Cradle to grave” tracking on hazardous materials.
23
Integrated Waste Management Variety of methods to minimize waste (3 R’s= Reduce, Reuse, Recycle)
24
Reducing Waste Reduce consumption Reduce packaging Trash taxes Photo/biodegradable plastics
25
Refillable Bottles Use fabric bags for groceries Reuse car parts, motor oil etc. Reuse 5 cents off/ bag TJ’s: Bring bags back 25 $ raffle Corona Factory, Mexico
26
Recycle Turning discarded materials into new materials. Pros: reduces virgin resource use, frees up landfill space, less deforestation, less habitat loss
27
Cons: Expensive for cities to start, trucks create CO 2, more expensive products. Recycling plants create CO 2 Global Warming
28
GIRL ALERT! M.A.C make-up Bring in 6 old M.A.C containers and receive 1 free lip gloss, lipstick, or eye shadow!
29
Recycled Materials Glass bottles Aluminum Cans (2/3 are recycled, non-renewable resource) Paper – –Low grade – –Requires bleach to de-ink
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.