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Harvesting rain - an urban rainwater system, Bangalore,India.

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Uploaded by on Jun 20, 2008

Collecting rainwater in a sump tank. This is one way of harvesting rain. Rooftop is kept clean. A first rain separator can segregate the first 2 mm of rain or be used when the rooftop needs cleaning.
A filter which is made from ferro-cement by the company APTEK removes carbonaceous material like leaves, twigs et al. Then the water is stored in an underground sump tanl to be used when required.
The rule of thumb for Bangalore is 6000 litres of storage to harvest rainwater from a 100 square metre roof area. This will help harvest about 80,000 litres to 100,000 litres of rain every year.
Bangalore has the advantage of good rain, 970 mm on average, which is also well distributed. The rainfall occurs over 60 rainy days from April to November.
Take advantage, harvest rain,reduce demand, recycle grey water adn help solve Bangalore's water problem.

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Uploader Comments (zenrainman)

  • Nice video, informative ... I'm in Arizona ... interested in Desert permaculture, long term sustainability, self sufficiency etc.

  • @DesertDood Thank you..

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  • dude....very good presentation ..but I wonder How do you prevent the sand to not to enter into tank ?

  • Very nice setup. TY for sharing.

  • ple send your telephone no and addressed so that we can asked about the training procedure

  • ple send your telephone no and addressed so that we can asked about the training procudure

  • you tie a 'Netlon' type mosquito mesh to prevent the sand from flowing out of the pipe...

  • how do you prevent the coarse sand from flowing into your sump along with the rain water?

  • How do you prevent the coarse sand from flowing into the pipe and into the sump?

  • I need your permission to share this info with many.........

    good job done sir.

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