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Write an essay in about 500 words on rainwater harvesting.
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Answers
Rainwater Harvesting Methods
Rainwater harvesting is a very simple method that can be practiced by anyone. There are primarily two types of rainwater harvesting methods. The first one is surface runoff harvesting. In this method, the water that runs off the surface is focused on. We see how the surface runoff causes a lot of loss of water. However, if we make proper arrangements, we can even save that water to use for various purposes.
In this method, we can collect the surface runoff water by making a path that directs to a storage space like a tank or pond. This can help store water in a large amount which can be used later for a lot of work. Everyone can design an efficient system which will collect large amounts of water from roads, gardens, parks and more. It will definitely be enough to sustain a community and even a city is designed on a larger level.
However, the runoff water will have a lot of impurities. Therefore, it is important to first filter the water properly so it can be reused for all purposes, whether it is drinking or cooking.
Next up, we have rooftop rainwater harvesting. Here, the roof of a house or building works as a rainwater collection unit. It includes equipping the roof with pipes that direct to a pit or tank. These pipes will divert the water falling on the roof in the tank to save water from falling off. This is a very economical and efficient way to harvest rainwater.
Answer:
Explanation:
Rain Water Harvesting as a method of utilizing rain water for domestic and agricultural use is already widely used throughout the world. It is a method which has been used since ancient times and is increasingly being accepted as a practical method of providing potable water in development projects throughout the world.
It has wide application also in urban and semi -urban areas where the reliability and quality of piped water is increasingly being questioned. For centuries the world has relied upon rainwater harvesting to supply water for household, landscape, and agricultural uses. Before city water systems were developed rainwater was collected (mostly from roofs) and stored in cisterns or storage tanks.
Today, many parts of the world, including Hawaii and the entire continent of Australia, promote rainwater as the principal means of supplying household water. On many Caribbean islands where rainwater is the most viable water supply option, public buildings, homes, and resorts all collect rainwater to supply their needs. In Hong Kong, rainwater is collected from skyscrapers to supply water needs.
Rainwater harvesting promotes self-sufficiency and fosters an appreciation for water as a resource. It also promotes water conservation.Rainwater harvesting also conserves energy as the energy input needed to operate a centralized water system is bypassed. Many systems require only a small pump to create water pressure in household pipes.
Local erosion and flooding from impervious cover associated with buildings is lessened as a portion of local rainfall is diverted into collection tanks. Rainwater is one of the purest sources of water available. Its quality almost always exceeds that of ground or surface water.