rain water harvesting - kscst
DESCRIPTION
An excellent presentation made by KSCST. The site is also a good resource -http://kscst.org.in/rwh.htmlTRANSCRIPT
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater - the answer
A.R. ShivakumarPrincipal Investigator - RWH
KARNATAKA STATE COUNCIL FOR SCIENCE & TECHNOLOGYIndian Institute of Science
Bangalore – 560 012
Rainwater - the lifeWater is very much essential for lifeIn the modern society water fulfills several needsWater for drinking, bathing and cooking food are among the important daily needs for human kind
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rain water - the answerConventionally water is collected in vessels and stored for a days requirementIn urban areas houses are built with water storing places like underground sump & overhead tank
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater - the sourceFresh water is made available for consumption in many waysNatural springsStep wells, Ponds & lakes
(Bangalore 262 -> 82)Canals, RiversOpen wells & tube wells
(1998, 1 lakh - modest estimate)
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Lakes of Bangalore
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Bellandur Lake, 1942
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
A Sports Stadium today, Sampangi Tank earlier
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Koramangala Tank is today a Housing “Complex”
KGA Golf Course, Once Challaghatta TankRWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Bangalore City Bus Stand, Once Dharmambudhi Tank
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater – for BangaloreWater to Bangalore is being supplied from Cauvery riverTippagondanahalli andHessaraghatta reservoirsTube wellsWater is pumped from a distance of around 100km to a height of nearly a km
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rain water – to/for electricity
Precious electric energy is used to pump water to major storage places in Bangalore and also at individual destinations from ground level to overhead tanksUG Sump, electric pump, overhead tank ect., are integral part of an urban house
(since they have not approached nature for their requirement)
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater – to rely onRain water would be the immediate resource to augment existing water supply systemBy Simply “Catching wherever it falls”Bangalore has around 60 rainy days and like a clock work 85% of the rain arrives between 4p.m. and 7p.m.
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater – at all placesThree methods– Roof top RWH– Runoff RWH (landscapes,
parks, storm water drains, roads, etc.)
– Natural storage and collection through lakes and tanks
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater – the availabilityRainfall in mm for Bangalore(Potential in liters for 40ft X 60ft site)Average 917 2,04,454
1998 1414 3,15,2881999 1011 2,25,3462000 1238 2,76,0242001 1060 2,36,3802002 766 1,70,8602003 726 1,61,8982004 1165 2,59,7952005 1508 3,36,284
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rain water – the needWHO / IS standard – water requirement of a family per day is around 500 ltsWater requirement per year per family is around 1,80,000 ltsWater supply by most urban bodies is far below this figureOn an average a family spends around Rs. 250 Per month for water in Bangalore
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater - the answer
Rainwater Harvesting in "Sourabha"
0
5000
10000
15000
20000
25000
30000
35000
40000
Janu
ary
Februa
ry
March
April
May
June July
Augus
t
Septem
ber
Octobe
r
Novem
ber
Decem
ber
Month
Wat
er in
lite
rs
Water requirement Rainwater available Average Rainwater
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RAINWATER - availability
10,00030020,00060040,000120080,00024004001,00,0003002,00,0006004,00,00012008,00,00024004000
RAINWATER
Lts
ROOFTOPAREA IN
SFT
RAINWATERMM
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater harvesting
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Abandoned well as recharge pit
Recharge pit Filled with pebbles, gravel and sand
Ground water recharge
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
News Paper24th Aug 2004
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
News Paper7th Jan 2004
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
News Paper7th Sep 2004
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
News Paper28th Jan 2004
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
News Paper 28th July 2004
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Sakaleshpura News PaperApril 2006
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Various stages of rainwater Harvesting
Storage G.W. Recharge
Filtering
Channelisation
Collection
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Storage of water
Overhead tank
Ground level
Underground
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Fero-cement TankRWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH at BWSSB Office BanashankariRWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH at CPI Office
FIXING OF POPUP FILTER ON WALL SURFACE
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH at KSCST, PopUp Filter Flush CapRWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH at KSCST,PopUp Filter -Filter Element
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH at BMP, PopUp Filter Filter Element CleaningRWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Sand bed filter
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Before
AfterVi
dhan
a So
udha
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Rainwater Harvesting in a village house at Chitradurga District
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12RWH in a village school for drinking water
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Roof top rainwater harvesting for tile roof building
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Bambo gutter
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Ground water recharge pit Excavation
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
GROUNDWATER RECHARGE THROUGH
BARREL SYSTEM
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
GROUNDWATER RECHARGE THROUGH BARREL SYSTEM
Recharge pit with barrelsUnderground after installation
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Similar to IG with excavated pit lined with size stone without using mortarSoak pits are generally not filled with any filler materialSoak pits are covered at the top by a RCC or stone slabsRainwater is channeled to the soak pits after filtration for ground water recharge
Ground water rechargeRainwater soak pit
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Narrow excavated trenches of around 2 ft. wide and 2 ft. depthFilled with pebbles or aggregates with a top layer of coarse sandRainwater from open spaces, parks, payments, roads etc. can be channeled to these trenches for ground water recharge
Ground water rechargeTrenches
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Ground water recharge – road side trench
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Pavers with holes for ground water recharge
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Combination of PopUp filter and Infiltration gallery with aggregates and sand can be usedNeeds close monitoring of filtration systemSite specificCooperative efforts yields good results
Ground water rechargeOpen well or bore well
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Infiltration gallery around perforated bore well
RWH for Open WellRWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RWH for Open Well
RWH at Kengeri Beedi Workers Housing
RWH at Kengeri Beedi Workers Housing
RAINWATER HARVESTING THROUGH
CLOTH OR SAREERWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
RAINWATER HARVESTING AND GROUND WATER
RECHARGE -
MODEL
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12
Thank youA.R. Shivakumar
Office : 23341652Residence : 23398655Mobile : 98452 12314
RWH Cell, Karnataka State Council for Science and Technology, Indian Institute of Science, Bangalore-12