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6-N.I.M.B.Y. – There is No Away in Throwing. CFC’s break down the ozone layer Why is this a problem?. Pollution in Surface Waters. Methods for killing viruses and bacteria in polluted water. Chlorinating water (may cause cancer-causing agents) High-intensity ultraviolet light.
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6-N.I.M.B.Y. – There is No Away in Throwing • CFC’s break down the ozone layer • Why is this a problem?
Pollution in Surface Waters • Methods for killing viruses and bacteria in polluted water. • Chlorinating water (may cause cancer-causing agents) • High-intensity ultraviolet light
Pollution in Ground Water • Pollution from farmers seeps into soil and contaminates ground water. • Contaminates aquifers
Biodegradable substances – organic substances broken down by bacteria, fungi, or other organisms. • Table 3.6 • Are all substances biodegradable if they say they are?
Hazardous Wastes • Hazardous household wastes • Table 3.7
4 R’s • Reduce, Reuse, Recycle, Recover • These R’s are ranked from best strategy to worst.
Sanitary Landfills • Covered to avoid windblown litter and attract scavengers. • Consist of mostly organic materials
Produces high amounts of leachate (a liquid that results from decomposition • Filtered out and sent to water treatment centers
Anaerobic conditions produce methane and carbon dioxide. • Methane burned off in a controlled manner to prevent explosions.
Secure Landfills • Landfills that are covered once they are full and have wells drilled in them so they can be monitored for leakage from the site • Store hazardous and toxic wastes.
Bioremediation – removal of contaminants from the soil by living things. • Eg. Sunflowers break down radiation into non-harmful chemicals and deposit them in the soil.
