process of rain water harvesting in 4 pages
Answers
Answer:
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Explanation:
Rainwater harvesting is the process of collecting rainwater from surfaces on which rain falls, filtering it and storing it for multiple uses. Rainwater harvesting puts the supply of water back to normal levels. It is the collection and storage of water from surfaces that rain has fallen upon.
Answer:
Explanation:Rainwater harvesting is the simple process or technology used to conserve Rainwater by collecting, storing, conveying and purifying of Rainwater that runs off from rooftops, parks, roads, open grounds, etc. for later use.
How to Harvest the Rainwater?
Rainwater harvesting systems consists of the following components:
Catchment- Used to collect and store the captured Rainwater.
Conveyance system – It is used to transport the harvested water from the catchment to the recharge zone.
Flush- It is used to flush out the first spell of rain.
Filter – Used for filtering the collected Rainwater and remove pollutants.
Tanks and the recharge structures: Used to store the filtered water which is ready to use.
The process of rainwater harvesting involves the collection and the storage of rainwater with the help of artificially designed systems that run off naturally or man-made catchment areas like- the rooftop, compounds, rock surface, hill slopes, artificially repaired impervious or semi-pervious land surface.
Several factors play a vital role in the amount of water harvested. Some of these factors are:
The quantum of runoff
Features of the catchments
Impact on the environment
Availability of the technology
The capacity of the storage tanks
Types of the roof, its slope and its materials
The frequency, quantity and the quality of the rainfall
The speed and ease with which the Rainwater penetrates through the subsoil to recharge the groundwater.
Rainwater Harvesting System
Why do we Harvest Rainwater?
The rainwater harvesting system is one of the best method practised and followed to support the conservation of water. Today, scarcity of good quality water has become a significant cause of concern. However, Rainwater, which is pure and of good quality, can be used for irrigation, washing, cleaning, bathing, cooking and also for other livestock requirements.
Advantages of Rainwater Harvesting
The benefits of rainwater harvesting system are listed below.
Less cost.
Helps in reducing the water bill.
Decreases the demand for water.
Reduces the need for imported water.
Promotes both water and energy conservation.
Improves the quality and quantity of groundwater.
Does not require a filtration system for landscape irrigation.
This technology is relatively simple, easy to install and operate.
It reduces soil erosion, stormwater runoff, flooding, and pollution of surface water with fertilizers, pesticides, metals and other sediments.
It is an excellent source of water for landscape irrigation with no chemicals and dissolved salts and free from all minerals.
Also Read: Disappearing Act of Water
Disadvantages of Rainwater Harvesting
In addition to the great advantages, the rainwater harvesting system has few disadvantages like unpredictable rainfall, unavailability of the proper storage system, etc.
Listed below are few more disadvantages of the rainwater harvesting process.
Regular Maintenance is required.
Requires some technical skills for installation.
Limited and no rainfall can limit the supply of Rainwater.
If not installed correctly, it may attract mosquitoes and other waterborne diseases.
One of the significant drawbacks of the rainwater harvesting system is storage limits.