More
and More and More Green Elements in Buildings – part c
Rainwater
harvesting is another fairly convenient green element in a building that is
affordable by the local. Such system recycles water for irrigation or toilet
flushing. In fact, such strategy is not an innovative thinking and has been
used 4000 years ago in Greece.
But
of course, the current system that most people use is much advance than the one
used in ancient Greece. There are two main techniques of rainwater harvesting.
The first one Is storing rainwater on surface for future use and the other is
recharging them to ground water. The first scheme of collecting rainwater
through gutter and pipe to the rainwater tank is widely used by public. And the
later one that recharge water to the ground is a new concept that need further
components such as trenches, dug wells, hand pumps, etc.
The
benefits by rainwater harvesting are wide spread, ranges from the community, local
councils to the developers. It reduces mains water consumption, water supply
infrastructure costs and the requirements for new or bigger dams. Also, it
improve water security of supply, asset protection such as lawns, gardens and
motor vehicles, and storm water quality.
I
don’t know how much water can be saved through such system, however, it works
more than just a system that recycles water, but also a mind to protect and
sustain our environment. With more and more green elements installed in a
buildings, public show their care on sustainability.
References:
Elements
of Green Building
Rainwater
Harvesting
http://www.bluescopesteel.com.au/building-products/rainwater-harvesting
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