18-12-2014, 03:26 AM
Rain Water Harvesting In Kannada Language
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rain water harvesting ppta in kannada language
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Rain Water Harvesting In Kannada Language
30-03-2017, 03:43 PM
Water is our most precious natural resource and something most of us take for granted. We are now increasingly aware of the importance of water for our survival and poor supply, especially in a dry continent like Australia. Collecting rainwater simply involves collecting water from the surfaces on which rain falls, and then storing this water for later use. Water is usually collected from the roofs of buildings and stored in rainwater tanks. This is very common in rural Australia. Water can also be collected in the prey of rain falling on the ground and producing runoff. Water collection is the accumulation and deposition of rainwater for reuse in place, rather than allowing it to drain. Rainwater can be collected from rivers or roofs and in many places the collected water is redirected to a deep well (well, well or well), a reservoir with percolation or collected from dew or mist with nets or other tools. Its uses include water for gardens, livestock, irrigation, domestic use with adequate treatment and heating for houses, etc. Harvested water can also be used as potable water, long-term storage and for other purposes such as groundwater recharge.
Advantages
Rainwater harvesting provides an independent water supply during regional water restrictions and in developed countries is often used to supplement the main supply. Provides water when there is a drought, can help mitigate low-lying flood and reduces demand in wells that can allow groundwater levels to be sustained. It also helps in the availability of potable water since rainwater is substantially free of salinity and other salts. The application of rainwater harvesting in the urban water system provides a substantial benefit to both water supply and wastewater subsystems by reducing the need for clean water in the water distribution system, less rainwater Generated in the sewage system. There has been a large body of work focused on the development of Life Cycle Assessment and Life Cycle Assessment methodologies to assess the level of environmental impacts and the money that can be saved by implementing rainwater harvesting systems.
More development and knowledge is required to understand the benefits that rainwater harvesting can provide to agriculture. Many countries, especially those with an arid environment, use rainwater harvesting as a cheap and reliable source of clean water. To improve irrigation in arid environments, soil ridges are constructed in order to trap and prevent rainwater from running down hills and slopes. Even in periods of low precipitation, enough water is collected for the crops to grow. Water can be collected from roofs, dams and ponds can be built to maintain large amounts of rainwater so that even on days where there is little or no rainfall, there is enough available to irrigate crops.
Advantages
Rainwater harvesting provides an independent water supply during regional water restrictions and in developed countries is often used to supplement the main supply. Provides water when there is a drought, can help mitigate low-lying flood and reduces demand in wells that can allow groundwater levels to be sustained. It also helps in the availability of potable water since rainwater is substantially free of salinity and other salts. The application of rainwater harvesting in the urban water system provides a substantial benefit to both water supply and wastewater subsystems by reducing the need for clean water in the water distribution system, less rainwater Generated in the sewage system. There has been a large body of work focused on the development of Life Cycle Assessment and Life Cycle Assessment methodologies to assess the level of environmental impacts and the money that can be saved by implementing rainwater harvesting systems.
More development and knowledge is required to understand the benefits that rainwater harvesting can provide to agriculture. Many countries, especially those with an arid environment, use rainwater harvesting as a cheap and reliable source of clean water. To improve irrigation in arid environments, soil ridges are constructed in order to trap and prevent rainwater from running down hills and slopes. Even in periods of low precipitation, enough water is collected for the crops to grow. Water can be collected from roofs, dams and ponds can be built to maintain large amounts of rainwater so that even on days where there is little or no rainfall, there is enough available to irrigate crops.
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