tailieunhanh - Water Pollution Types of water pollution Sources of water pollution Clean Water Act Treatment of waste water

According to the traditional water pollution control approach, user-requirement issues would often be overlooked because the identification of such problems is not based on objectively verifiable indicators. Whereas an impact issue can be identified by the presence of, for example, a pollution source or a human activity causing deterioration of the aquatic resources (. deforestation), user-requirement issues are identified by a lack of water of adequate quality for a specific, intended use. . | CH. 21 22 Water Pollution Types of water pollution Sources of water pollution Clean Water Act Treatment of waste water Possible Test Questions 1. List and discuss 6 categories of water pollutants. 2. Discuss how sewage is related to biological oxygen demand BOD dissolved oxygen and eutrophication. 3. Discuss the problems associated with pesticide use. Use DDT as a specific example. More in Ch 22 4. Why were PCBs thought to be a miracle chemical Why is this organic chemical an environmental curse . 5. Contrast point source pollution and non-point source pollution giving examples of each. 6. Distinguish among primary secondary and tertiary treatments for wastewater. Water Pollution physical chemical biological changes in water quality that adversely affect living organisms. Degradation. Types Infectious Agents Oxygen-Demanding Wastes Inorganic Pollutants Organic Chemicals Sediment Particulates Thermal .

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