rain water harvesting
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FEASIBILITY STUDY FOR RAIN WATER HARVESTING AT SVNIT CAMPUS, SURAT
By : MITESH PATEL (U10CE046)
Mentor: Shri Ravin tailor
Assistant Professor
CED, SVNIT
IntroductionThe total amount of water on earth remains
constant. The rapid growth in population together with the extension of irrigated agriculture and industrial development, are putting stress on the natural ecosystems. In the face of growing problems, society has begun to realize that it can no longer subscribe to a use and discard philosophy with any natural resource. One such resource is WATER. To deal with it, a technique called RAIN WATER HARVESTING was introduced where rain water is used to meet some of our daily needs.
What is Rainwater HarvestingRainwater harvesting is the accumulating and
storing, of rainwater. It has been used to provide drinking water, water for livestock, water for irrigation or to refill aquifers in a process called ground water recharge.
The principle of collecting and using precipitation from a catchments surface.
Rain water harvesting means to make optimum use of rain water at the place where it falls i.e. conserve it and not allow draining away and causing floods elsewhere.
Need of Rainwater Harvesting Water is becoming scarce. Surface water is inadequate to meet
our demand. We have to depend on ground water. To reduce soil erosion. Groundwater is getting depleted and
polluted. Improves the ground water quality. Increasing population of India. Of the total water on earth, only 3%
constitutes freshwater. Rest is saline water in the oceans.
11% of the total fresh water on earth is groundwater available up to a depth of 800m which can be extracted for use
Rainwater Harvesting Techniques
Roof top rainwater harvesting.
Surface runoff harvesting .
Roof Top Rain Water HarvestingIn rooftop harvesting, the roof becomes
the catchments, and the rainwater is collected from the roof of the house/building. It can either be stored in a tank or diverted to artificial recharge system. This method is less expensive and very effective and if implemented properly helps in augmenting the ground water level of the area.
How to Harvest Rainwater Collect water from the rooftop. Draw it down from pipes. Filter the water. Store in a sump or tank for later use. Charge the groundwater through a soak pit. Lead the water into a well to increase ground water content.
Elements of Rooftop Rainwater Harvesting
CATCHMENT
CONDUITS
FILTERS
STORAGE FACILITY
SURFACE RUNOFF HARVESTINGHarvesting of surface
runoff and storage of the same into reservoirs such as water pans makes it available for use when required.
In this method of collecting rainwater for irrigation,waterflowing along the ground during the rains will be collected to a tank below the surface of the ground.
Advantages of RWH RWH is the ideal solution for
all water requirements. Increase in ground water level. Reduces flooding of roads . Reduced soil erosion. Improves the ground water
quality. Low cost and easy to maintain. Reduces water and electricity
bills
Disadvantages of RWHSeasonal nature and uncertainty of rainwater supply
depending on the region in the world.
Capital costs .
Regular maintenance and cleaning is essential for
successful operation.
Study Area:-SVNIT CampusTotal roof top area = 1,29,655.77 m2
daily amount of water to be
Collect:- 5186.23 m3
No of bores need for harvesting:-208
Amount of water to be collect in 30 days:-173586.9m3
SummaryOn of the best way to solve the world burning
facing issue: Water Scarcity.Helps in Raising Ground water level.Harvested water can be used for Daily household
needs.It is economical.Its not a permanent solution as water is not
available throughout the year but it can be utilized to its maximum extent.
Water is an important resource we should be very careful while dealing with it.
Rain Water Harvesting
Noble Goal
THANKYOU