Write short note on rain water harvesting for 5 marks
Answers
Answer:
Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing them to run off. Rainwater can be collected from rivers or roofs and redirected to a deep pit (well, shaft, or borehole), aquifer, a reservoir with percolation, or collected from dew or fog with nets or other tools. Its uses include water for gardens, livestock,[1] irrigation, domestic use with proper treatment, indoor heating for houses, etc. The harvested water can also be used as drinking water, longer-term storage, and for other purposes such as groundwater recharge.
Answer:
Rainwater harvesting is a method used for collecting, storing and using rainwater for various purposes, for example, for landscape irrigation. This technique is used to collect rainwater from different hard surfaces like rooftops and other manmade hard surfaces above the ground.
The rainwater that falls on the roof is channelized by the roof catchment systems into a tank through gutters and pipes. Using rainwater for laundry, garden use and for flushing the toilets can reduce 70% of the consumption of main water by a household. If rainwater is supplied to the hot water systems it can reduce the consumption by 85%.