Changes

Sump tank

456 bytes added, 00:21, 29 November 2014
Construction, operation and maintenance
===Construction, operation and maintenance===
[[Image:sump tank 3.jpg|thumb|right|200px|A 20,000 litre sump tank collects rainwater. Source: [http://rainwaterharvesting.wordpress.com/2011/06/21/hi-tech-vs-low-tech-in-the-water-sector/ Hi-Tech vs Low-tech in the rural drinking water sector]. June 21, 2011]]
[[Image:sump tank 4.png|thumb|right|200px|For those who have connected the rooftop to sumps, it is time to clean up the roof, pipes and filters and the sump itself and be ready to collect the bounty. Source: [http://www.indiawaterportal.org/news/preparing-monsoons-mazhapolima-way-kerala-simple-rooftop-rainwater-harvesting-and-aquifer Preparing for the monsoons the 'Mazhapolima' way in Kerala: Simple rooftop rainwater harvesting and aquifer recharge]]]
* The overflow pipe should be just below the tank / sump cover so that there is no ‘dead space’ and the tank can be used to its maximum capacity. The overflow pipe should divert the excess water away from the sump and the foundations of other buildings and structures. This water should be directed to gardens or into the storm water drain and should not create slushy areas. A reverse U bend should be installed at the end of the overflow pipe so that light and other impurities do not enter the tank.
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