RAINBOW DRIVEre-imagining water sources
Rainbow Drive is a 36acre neighborhood with 430 plots located in south east Bangalore. The sloped land posed a challenge for the residents due to excessive flooding during monsoon. Also, due to lack of connectivity to the municipal water supply, the residents depended on ground water from borewells for their daily consumption.As a result of the scarcity and flooding , they opted to conserve, reuse and recycle water through rainwater harvesting, recharge wells and a Phytoroid sewage treatment plant. This was done by creating a layout association that worked collaboratively.
3.
water tariff
>40 KL 30-40KL 20-30 KL
Rs.20 per KL
10-20 KL 0-10 KL
rain water harvesting
community bore wells
water tariff
phytorid stp
storm water jali
recharge well lid
after
WATER METER
REDUCTION IN WATER USAGE, metering heLPED IN CALCULATING CONSUMPTION AND ARRVIE AT A TARRIF
1.
rain water harvesting
before
Rs.60 per KL Rs.40 per KL Rs.25 per KL Rs.15 per KL Rs.10 per KL
Water meters are installed at overhead tanks and at household levels, which monitored the inflow and outflow of water supply and usage respectively. This in-turn helped in tabulating a new water tarrif for the layout. water pricing = water consumption
More than 360 recharge wells, on an average 3 feet in diameter and of depth 20 feet, have been created.
4.
This effectively means zero discharge has been achieved for rainwater for the entire layout.
phytorid sEWAGE tREATMENT pLANT
7.Vegetation sysytem Water meter 6.Decomposition 5.Nutrient uptake 4.Adsorption
recharge well PLANT BED
3.Filtration 2.Bacterial action
Ground water table after
1.Sedimentation
CONVENTIONAL
storm water drains after
storm water drains before
land area
rwh potential
14.56 h
154kl
56ml
dependant on 6 common bore-wells improved aquifer capacity
POLLUTION
ENVIRONMENT FRIENDLY
2.
After the end of the distribution cycle there’s a surplus of 60KL daily, thus making it a self sufficient neighbourhood.
N
ban of digging private borewells.
BETTER WATER QUALITY
AQUIFER :after
area : 14.56 HECTARES PLOTS: 435 Ground water table has risen to around 250ft and hence befitting the surrounding communities.
MAINTAINANCE COST AT RS10,000/MONTH
THE WATER DISTRIBUTION CYCLE
COMMUNITY BORE WELL
AQUIFER :before
POOR WATER QUALITY
MAINTAINANCE COST AT RS40,000/MONTH
annual potential
PHYTORID
Futurarc 2015/ K9792564/Professional/Bengaluru/Page no:2
Ground water table before
water worksthe bengaluru story