rain water harvesting:
-introduction
-hypothesis
-materials list
-procedure
-application
-conclusion
please write 3 paragraph on each of the given points on rain water harvesting
Answers
Answer:
introduction:
Rainwater harvesting system, also called rainwater collection system or rainwater catchment system, technology that collects and stores rainwater for human use. Rainwater harvesting systems range from simple rain barrels to more elaborate structures with pumps, tanks, and purification systems. The nonpotable water can be used to irrigate landscaping, flush toilets, wash cars, or launder clothes, and it can even be purified for human consumption. With water scarcity a pressing problem for many densely populated regions, rainwater harvesting systems can supply households and businesses with water for use in dry seasons and lessen the demand on municipal systems.
rainfall is sporadic and that only a small proportion of global precipitation is easily available for human use, rainwater harvesting can be an efficient means of capturing that precious resource. In cities, much of the rain that falls on buildings, roofs, roads, and other hard landscaping does not percolate into the soil and is instead directed into storm sewers for disposal. Impermeable surfaces cause urban flooding in many areas and generate contaminated unusable water that is directed away from potable water resources. During dry months, local groundwater can be depleted, and many localities struggle to consistently provide enough potable water to meet demand. Rainwater harvesting for nonpotable functions, such as gardening and washing clothes, significantly reduces both the demanded amount of the total fresh water and the strain on stormwater infrastructure. That saving in the demand and supply of potable fresh water is significant in large cities. Although many localities encourage and even subsidize rain barrels and other rainwater harvesting systems, some areas, particularly those in the southwestern United States, view rainwater harvesting as a water rights issue and place restrictions on such collections.
Rainwater harvesting system, also called rainwater collection system or rainwater catchment system, technology that collects and stores rainwater for human use. Rainwater harvesting systems range from simple rain barrels to more elaborate structures with pumps, tanks, and purification systems. The nonpotable water can be used to irrigate landscaping, flush toilets, wash cars, or launder clothes, and it can even be purified for human consumption. With water scarcity a pressing problem for many densely populated regions, rainwater harvesting systems can supply households and businesses with water for use in dry seasons and lessen the demand on municipal systems.
rainfall is sporadic and that only a small proportion of global precipitation is easily available for human use, rainwater harvesting can be an efficient means of capturing that precious resource. In cities, much of the rain that falls on buildings, roofs, roads, and other hard landscaping does not percolate into the soil and is instead directed into storm sewers for disposal. Impermeable surfaces cause urban flooding in many areas and generate contaminated unusable water that is directed away from potable water resources. During dry months, local groundwater can be depleted, and many localities struggle to consistently provide enough potable water to meet demand. Rainwater harvesting for nonpotable functions, such as gardening and washing clothes, significantly reduces both the demanded amount of the total fresh water and the strain on stormwater infrastructure. That saving in the demand and supply of potable fresh water is significant in large cities. Although many localities encourage and even subsidize rain barrels and other rainwater harvesting systems, some areas, particularly those in the southwestern United States, view rainwater harvesting as a water rights issue and place restrictions on such collections.
The simplest rainwater harvesting systems are nonpressurized systems, such as rain barrels, where the pipes run from rain gutters into a tank. Known as “dry systems,” those structures do not hold any water in the pipes after it stops raining and do not create breeding grounds for mosquitoes and other insects. “Wet systems” are necessary when the pipes cannot be configured to run directly into the tanks. In places where the tanks are located some distance away from the collection surfaces or where there are a series of tanks to serve a number of buildings, pipes from the gutter go underground and then up through a riser into the tank. Such systems are often pressurized so that the long runs of pipes do not retain stagnant water.
Explanation:
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