Question

drain water harvesting and rain water harvesting diffrence. answer for many points​

Answer 1

Answer:

• Rain water harvesting is a technique of collection and storage of rainwater into natural reservoirs or tanks, or the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff). One method of rainwater harvesting is rooftop harvesting. With rooftop harvesting, most any surface — tiles, metal sheets, plastics, but not grass or palm leaf — can be used to intercept the flow of rainwater and provide a household with high-quality drinking water and year-round storage. Other uses include water for gardens, livestock, and irrigation, etc.
• Drain water harvesting. ... This is the reason country's IT capital, Bengaluru, has taken its first steps towards 'drain water harvesting'. The Karnataka government has made it necessary for every building in the city with 20 or more flats to have a sewage treatment plant of its own.

Explanation:

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Answer 2

Explanation:

• Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing it to run off. Rainwater can be collected from rivers or roofs and redirected to a deep pit, aquifer, a reservoir with percolation, or collected from dew or fog with nets or other tools.

• A rainwater harvesting system comprises components of various stages - transporting rainwater through pipes or drains, filtration, and storage in tanks for reuse or recharge.

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