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8/14/2019 Prsentation - RHS
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In search of drinking water
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
8/14/2019 Prsentation - RHS
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Amount of drinking water in the world
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Per capita consumption India / World
Litres per person
per day
Drinking 3
Cooking 4
Bathing 20Flushing 40
Washing clothes 25
Washing utensils 20
Gardening 23
Total 135
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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In search of drinking water
In many parts of the world, women spend 2-3 hours a
day fetching waterDesigned by : Shiva Prasad K, 3rdSem, MBA, RRCE
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India rainfall
India annual
rainfall
is within the
top 6 countries
in the world.
But we do not
conserve the
rain water.
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Compare rainfall in 5 Indian cities
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
Janu
ary
Febru
ary
Ma
rch
April
M
ay
Ju
ne
J
uly
Aug
ust
Septem
ber
Octo
ber
Novem
ber
Decem
ber
months
rain
fallinI n
ches
Mumbai
Delhi
Calcutta Chennai
Bangalore
Bangalore gets 37annually but the rainfall is more spread out.
Delhi = 32.1 Mumbai=120 Calcutta=62.3
6
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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India has 2 seasons Floods and Drought
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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What is Rainwater harvesting ?
Capture rain water, store it and use it - it is as simple as
that - Prime Minister Vajpayayee at a national seminar on
Rain water harvesting, New Delhi, May 22, 2000
Collect the rain water falling on house tops, collection
ponds, lakes, open areas with natural grading
Rain water is naturally pure (excepting where it becomes
acid rain due to industrial pollution)
Ground water could be salty or brackish
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
8/14/2019 Prsentation - RHS
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Collecting surface water at the building gate
The rainwater falling on
the open space around the
complex can be collected
near the gate by providing
a gutter with a perforatedlid. The collected water
can be led through a pipe
into a recharge well
of 1 metre dia and 5 metredeep.
If the area around the flat complex is paved with concrete,we collect the water at the gate.
Rain Centre Two views of water collection at the gate.
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
8/14/2019 Prsentation - RHS
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Collecting roof water and draining it in a well
Clean the building roof as a
collector of rainfall.
Draw rainwater down through
pipes and gutters (Rs 2000)
Drain water through a filtering
pit 2x2x2 filled with pebbles
and sand with a cover slab
(Rs1500)
Provide a pipe from the filtering
pit to the well. (Rs 500)
Cost estimates for drawing
shown. Will vary for other units
Rain Centre -
Take roof
water, filter
and charge thewell
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Ground levelsump
tankRain water
1
2
4
5
6
7
8
House - Ground floor
House - Top floor
pump
filter
3
1. Rain water collected
on the roof
2. Flows thru drain
pipe
3. First flush - discard
some initial water4. Water flows thru
a filter - bottom to
top (sponge is filter)
5. Store in a sump
6. Pump water to tank7. Water pumped up
8. Store in a overhead
tank - to house
9. Overflow from sump
charges the aquifer
Roof top Rain Water harvesting
9
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Rural water harvesting
Check dams along a river - RajasthanDesigned by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Rural water harvesting
Water shed management Ralegaon Sidhi - Maharashtra
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Water shed management - CCT
CCT Continuous Contour Trenching
CCT is a trench dug across the sloped hills (along the
contour ) to hold and retain water and to increase the
moisture availability for the plant growth
No CCT
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Rain Centre opens in Bengaluru
Opened in August 2003
Shows how to install
RWH using
Roofwater RWH
Surface water
Collect at gate
Percolation pit
Sump and babywells
Exhibits by CSE
Design help
Rain Centre Rainwater harvesting theme park
at Jayanagar V Block, Bengaluru.
www.raincentre.org
Open Hours : 11 AM to 7 PM all days
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Rain Centre opens in Bengaluru and Chennai
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Rain Water Harvesting Sites
B.M.S. College of Engineering, Bull Temple Road, Bangalore
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
http://kscst.org.in/rwh_files/rwh_initiate_files/Proj_Highlights_01.pdfhttp://kscst.org.in/rwh_files/rwh_initiate_files/Proj_Highlights_01.pdf8/14/2019 Prsentation - RHS
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Rain Water Harvesting Sites
K. C. General Hospital, Malleshwaram, Bangalore
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
http://kscst.org.in/rwh_files/rwh_initiate_files/Proj_Highlights_02.pdfhttp://kscst.org.in/rwh_files/rwh_initiate_files/Proj_Highlights_02.pdf8/14/2019 Prsentation - RHS
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Rain Water Harvesting Sites
KAVERI Poultry Farm, Chitradurga
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
http://kscst.org.in/rwh_files/rwh_initiate_files/Proj_Highlights_12.pdfhttp://kscst.org.in/rwh_files/rwh_initiate_files/Proj_Highlights_12.pdf8/14/2019 Prsentation - RHS
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POSITIVE EXPERIENCEPOSITIVE EXPERIENCE
Economical & effective, compared to conventional system of watersupply
The extra initial cost of construction of RHS can be recouped in 3years and 8 months time.
RHS has no running expenses and saves the energy needed forpumping water.
Once the RHS is maintained properly, the quality of water is bestavailable, unlike the stream water, which is often polluted and needs
treatment to avoid water borne diseases.
Adoption of RHS will have a very positive impact on the health of thebeneficiaries.
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Typical family of 5 - annual consumption and costs
A typical house plot in Karnataka is about 2,400 sq.feet If we harvest the entire 129 cm of annual rainfall, it will
yield 700 litres of fresh water per ground per day.
This will result in 255,500 litres per year
How much water can be harvested in a house ?
Family of 5 that needs 135 litres per person per day willneed 246,375 litres in a year
A typical water tanker in Karnataka carries 12,000 litres
of water and the tanker of water costs Rs 700 to Rs 1,000
during the summer of 2001 This will cost our family of 5, Rs 20,531 annually.
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Rainwater harvesting in Austin Texas
Visited these RWH installations in Austin Texas in Feb 2002
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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With students from a local college at the Rain centre
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Collecting rain water in Temple tanks
Before After
There are many temple tanks in the city of Shringeri,
Karnatka. They act as large storage tanks, percolating rainwater and charging the water table. This allows thousands of
people living around the tank to draw water from their wells
Desilting a temple tank costs between Rs 5 and 10 lakhs and
is being done by the Rotary Club of ChennaiDesigned by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Results to date
The underground water level has come up by 10 to 15 feetin those places that have installed RWH.
There are about 400,000 plots in Bengaluru.
In 2001, about 5000 plots had RWH implemented.
In 2002, this figure is close to 50,000 plots In 2003, the current estimate would be around 80,000
We have reached about 20% of the households.
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Results to date
To cover all the districts of Karnataka, Council hasestablished RWH resource and training center for the
southern states at Mahatma Gandhi Regional Institute for
Rural Energy and Development in Bangalore and District
RWH Nodal Centers at all the 27 districts in the state.
Technical support is also being provided in establishing
RWH system in 176 villages (one each in every taluk of
Karnataka) and 23,680 rural schools in the state (probably
the world's largest RWH project) a programme of Rural
Development and Panchayat Raj, Government ofKarnataka. Over 10,000 people from Bangalore and other
parts of Karnataka have availed technical support on
Rainwater Harvesting from the Council.
Designed by : Shiva Prasad K, 3rdSem, MBA, RRCE
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Designed by : Shiva Prasad K, 3rdSem MBA RRCE
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