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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

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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

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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

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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.pdf
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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.pdf
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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.pdf
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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