Chapter 20: Problem 1
What practices and consequences led to passage of the Clean Water Act of 1972?
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Chapter 20: Problem 1
What practices and consequences led to passage of the Clean Water Act of 1972?
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How are water quality standards determined? Distinguish between water quality criteria pollutants and maximum contaminant levels.
Discuss each of the following categories of water pollutants and the problems they cause: pathogens, organic wastes, chemical pollutants, and sediments.
What are the principles involved in removing biological nutrients from waste, and what is accomplished by doing so? Where do nitrogen and phosphate go in the process?
How may sewage from individual homes be handled in the absence of municipal collection systems? What are some problems with these on-site systems?
Explain the difference between oligotrophic and eutrophic waters. Describe the sequential process of eutrophication.
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