kannada essay on water harvesting
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hope you need essay on rainwater.
below is the answer.
Rainwater harvesting is a technique used for collecting, storing and using rainwater for landscape irrigation and other uses. The rainwater is collected from various hard surfaces such as rooftops and/or other manmade aboveground hard surfaces.
This ancient practice is growing in popularity due to interest in reducing the consumption of potable water and the inherent qualities of rainwater.
This website will focus on general information about rainwater harvesting systems, rainwater system advantages and disadvantages, and helpful links and references.
Rainwater Harvesting Basic Components
Rainwater systems come in all shapes and sizes, from simple catchment system under a downspout to large above and/or underground cisterns with complex filtration systems that can store thousands of gallons of water.
Most rainwater collection systems are comprised of the same basic components
Catchment surface - rooftop or other raised solid surface. The best catchment systems have hard, smooth surfaces such as metal roofs or concrete areas. The amount of water harvested depends on the quantity of rainfall, the size of the surface and the slope of the catchment area.
Gutters and downspouts - also known as distribution systems. They channel water from the catchment .area to a holding container such as a barrel, cistern or planted area
Leaf screens - a screen that removes or catches debris.
Roof washers - a device that diverts the "first flush" of rain before it enters the storage tank. Most rainwater suppliers recommend that the "first flush" of water is diverted to an outside area of the storage system since the catchment surface may accumulate bird droppings, debris and other pollution.
Storage tanks - In general, the storage tank is the most expensive component of a rainwater harvesting system. There are numerous types and styles of storage tanks available. Storage can be aboveground or underground. Storage containers can be made from galvanized steel, wood, concrete, clay, plastic, fiberglass, polyethylene, masonry and more. Examples of aboveground storage include cisterns, barrels, tanks, garbage cans, aboveground swimming pools and more. Storage tank prices vary based on variables such as size, material and complexity. To inhibit the growth of algae, storage tanks should be opaque and preferably placed away from direct sunlight. The tanks should also be placed close to the area of use and supply line to reduce the distance over which the water is delivered. Also consider placing the storage on an elevated area to take advantage of gravity flow. The tank should always be placed on a stable and level area to prevent it from leaning and possibly collapsing.
Delivery systems - gravity-fed or pumped to the landscape or other end-use areas.
Purification/treatment system - needed for potable systems to make the water safe for human consumption. Please check with your local health department for information on filtration systems and certification requirements.
below is the answer.
Rainwater harvesting is a technique used for collecting, storing and using rainwater for landscape irrigation and other uses. The rainwater is collected from various hard surfaces such as rooftops and/or other manmade aboveground hard surfaces.
This ancient practice is growing in popularity due to interest in reducing the consumption of potable water and the inherent qualities of rainwater.
This website will focus on general information about rainwater harvesting systems, rainwater system advantages and disadvantages, and helpful links and references.
Rainwater Harvesting Basic Components
Rainwater systems come in all shapes and sizes, from simple catchment system under a downspout to large above and/or underground cisterns with complex filtration systems that can store thousands of gallons of water.
Most rainwater collection systems are comprised of the same basic components
Catchment surface - rooftop or other raised solid surface. The best catchment systems have hard, smooth surfaces such as metal roofs or concrete areas. The amount of water harvested depends on the quantity of rainfall, the size of the surface and the slope of the catchment area.
Gutters and downspouts - also known as distribution systems. They channel water from the catchment .area to a holding container such as a barrel, cistern or planted area
Leaf screens - a screen that removes or catches debris.
Roof washers - a device that diverts the "first flush" of rain before it enters the storage tank. Most rainwater suppliers recommend that the "first flush" of water is diverted to an outside area of the storage system since the catchment surface may accumulate bird droppings, debris and other pollution.
Storage tanks - In general, the storage tank is the most expensive component of a rainwater harvesting system. There are numerous types and styles of storage tanks available. Storage can be aboveground or underground. Storage containers can be made from galvanized steel, wood, concrete, clay, plastic, fiberglass, polyethylene, masonry and more. Examples of aboveground storage include cisterns, barrels, tanks, garbage cans, aboveground swimming pools and more. Storage tank prices vary based on variables such as size, material and complexity. To inhibit the growth of algae, storage tanks should be opaque and preferably placed away from direct sunlight. The tanks should also be placed close to the area of use and supply line to reduce the distance over which the water is delivered. Also consider placing the storage on an elevated area to take advantage of gravity flow. The tank should always be placed on a stable and level area to prevent it from leaning and possibly collapsing.
Delivery systems - gravity-fed or pumped to the landscape or other end-use areas.
Purification/treatment system - needed for potable systems to make the water safe for human consumption. Please check with your local health department for information on filtration systems and certification requirements.
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