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Page Name: Rainwater harvesting


Posted by: project ideas
Created at: Wednesday 30th of May 2012 06:30:17 AM
Last Edited Or Replied at :Wednesday 30th of May 2012 06:30:17 AM
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, usually of acceptable quality for household needs and renewable at acceptable volumes, despite forecasted climate change (CSIRO, 2003). It produces beneficial externalities by reducing peak storm water runoff and processing costs. In municipalities with combined sewer systems, reducing storm runoff is especially important, because excess runoff during heavy storms leads to the discharge of raw sewage from outfalls when treatment plant capacity cannot handle the combined flow. Rainwater harvesting systems are simple to install and operate. Running costs are negligible, and they provide water ..................==> [ Click Here to Read More ]



Page Name: Rainwater harvesting from rooftop catchments


Posted by: project maker
Created at: Tuesday 21st of February 2012 04:55:48 AM
Last Edited Or Replied at :Tuesday 21st of February 2012 04:55:48 AM
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ent supply system, and also in areas where good quality fresh surface water or groundwater is lacking.
Annual rainfall ranging from less than 500 to more than 1 500 mm can be found in most Latin American countries and the Caribbean. Very frequently most of the rain falls during a few months of the year, with little or no precipitation during the remaining months. There are countries in which the annual and regional distribution of rainfall also differ significantly.


Technical Description
A rainwater harvesting system consists of three basic elements: a collection area, a conveyan..................==> [ Click Here to Read More ]



Page Name: Safe Water Technologies


Posted by: project report expert
Created at: Monday 27th of June 2011 04:44:18 AM
Last Edited Or Replied at :Monday 27th of June 2011 04:44:18 AM
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e of drinking water available, even if low levels of bacteria are present. Often, rainfall is seasonal, and large storage tanks would be required to bridge the dry season. While water can be safely stored for long periods, the large tanks may be too expensive. In such cases, small storage tanks provide an inexpensive and convenient water source during the rainy season, and other sources should be found for the dry season. • Surface water requires more treatment than groundwater or rainwater, since it usually has very high bacterial contamination. In order to ensure that treatment is alwa..................==> [ Click Here to Read More ]



Page Name: RAIN WATER HARVESTING


Posted by: project report expert
Created at: Saturday 18th of June 2011 04:26:09 AM
Last Edited Or Replied at :Tuesday 19th of June 2012 04:24:11 AM
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s it will be contaminated with dust, bird droppings etc. Roof gutters should have sufficient incline to avoid standing water. They must be strong enough, and large enough to carry peak flows. Storage tanks should be covered to prevent mosquito breeding and to reduce evaporation losses, contamination and algal growth. Rainwater harvesting systems require regular maintenance and cleaning to keep the system hygienic.
Subsurface dyke
A subsurface dyke is built in an aquifer to obstruct the natural flow of groundwater, thereby raising the groundwater level and increasing the amount of water store..................==> [ Click Here to Read More ]



Page Name: RAINWATER HARVESTING ARTIFICIAL DISCHARGE TO GROUND WATER


Posted by: academic expert
Created at: Monday 18th of April 2011 01:51:20 AM
Last Edited Or Replied at :Thursday 26th of July 2012 11:58:59 PM
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two are usually permanent or semi-permanent; and the sandbag check dam is usually for temporary purposes. Also, there are check dams that are constructed with rock fill or wooden boards. These dams are usually used only in small, open channels that drain 10 acres (0.040 km2) or less; and usually do not exceed 2 feet (0.61 m) high.
2.2 Subsurface dams
Subsurface Dams are groundwater dams, which are structures that intercept or obstruct the natural flow of groundwater and provide storage for water underground.
They have been used in several parts of the world, notably India, Africa ..................==> [ Click Here to Read More ]



Page Name: RAINWATER HARVESTING full report and ppt


Posted by: seminar topics maker
Created at: Sunday 06th of February 2011 10:53:13 PM
Last Edited Or Replied at :Friday 14th of September 2012 06:41:50 AM
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ncreasing soil moisture levels for urban greenery, increasing the groundwater table via artificial recharge, mitigating urban flooding and improving the quality of groundwater. In homes and buildings, collected rainwater can be used for irrigation, toilet flushing and laundry. With proper filtration and treatment, harvested rainwater can also be used for showering, bathing, or drinking. The major benefits of rainwater harvesting are summarised below:
• rainwater is a relatively clean and free source of water
• rainwater harvesting provides a source of water at the point where it is nee..................==> [ Click Here to Read More ]



Page Name: Rain water harvesting in surrounding areas


Posted by: sharathsingh
Created at: Friday 17th of September 2010 04:46:22 PM
Last Edited Or Replied at :Saturday 18th of September 2010 12:12:46 AM
areas , surrounding, harvesting , water, Rain ,
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Dear sir,...

I am sharath and I am a student, I want more information about rain water harvesting, as I have decided to prepare academic projects report on this topic, so please help me?

Please do the above needful,..

Thank you,.....................==> [ Click Here to Read More ]



Page Name: RAINWATER HARVESTING AND ARTIFICIAL RECHARGE TO GROUND WATER full report


Posted by: best project report maker
Created at: Sunday 07th of February 2010 07:25:01 PM
Last Edited Or Replied at :Friday 23rd of November 2012 05:38:24 AM
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N URBAN AREAS
RAINWATER HARVESTING SYSTEMS ARE SIMPLE WHICH CAN BE ADOPTED BY INDIVIDUALS
PROVIDE HIGH QUALITY WATER THROUGH DILUTION WHEN RECHARGE TO GROUND WATER
IT CAN IMPROVE THE ENGINEERING BUILDING FOUNATION WHEN CISTERNS ARE BUILD AS PART OF

THE SUBSTRUCTURE OF THE BUILDINGS, AS IN THE CASE OF MANDATORY CISTERNS


DISADVANTAGES OF RWH

TAKE CONSIDERABLE AMOUNT OF TIME TO PAY FOR ITSELF
LEKAGE FROM CISTERNS CAN CAUSE THE DETERIORATION OF LOAD BEARNG SLOPES
THE SUCCESS OF RAINFALL HARVESTING DEPENDS UPON THE FREQUENCY AND AMOUNT OF RAINFALL

THEREFORE IT ..................==> [ Click Here to Read More ]



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