Water: Resources and Pollution. Chapter 23. Outline:. Hydrologic Cycle Water Compartments Water Availability Freshwater Shortages Increasing Water Supplies Water Management and Conservation Water Pollution Water Quality Today Water Pollution Control Water Legislation. WATER RESOURCES.
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1. Define: hydrologic cycle.
2. Compare and contrast: aquifer and artesian.
3. What is the best way to measure the water volume of a river or stream? Does the season matter? Why?
Discharge. ( example: cubic feet per second)
Yes. Stream discharges usually vary over the year.
4. Off the major water compartments, which has the greatest volume? The least?
Greatest: the oceans
Least: the atmosphere
CaCO3 + H2SO4 CaSO4 + H2O +CO2
In RO, feedwater is pumped at high pressure through permeable
membranes, separating salts from the water..
The feedwater is pretreated to remove particles that would clog the
membranes. The quality of the water produced depends on
the pressure, the concentration of salts in the feedwater, and the salt
permeation constant of the membranes.”
These will collect storm water for treatment.