Business
Now make pure water from thin air!
By
Quaid NajmiIn April 2012, at the height of
summer, Mumbaikars were shocked to read about the death of a woman in a
Thane village who trudged several kilometres to fetch drinking water and
died from sunstroke. The incident prompted an IITian to build a device
that can convert humidity in the atmosphere into water, right in our
homes.
Anit Asthana, a chemical engineer from the Indian
Institute of Technology (IIT) - Delhi and an MBA from XLRI, Jamshedpur,
was moved to do something about the problem of cheap drinking water,
especially during the summer months and in the drought-prone regions of
the country.
"After a lot of research and experiments, we have
developed India's first Air-Water Generator which can 'make' pure water
from the humidity in the atmosphere, right in your home," Asthana,
managing director of ElectroWater Technologies Pvt. Ltd, Mumbai, told
IANS.
The Air-Water Generator has already been successfully test
marketed in the most rigorous conditions all over India from Mumbai to
Rajasthan, Kashmir to the northeast and the coastal and mountain regions
with encouraging results. It has just secured its first bulk order to
supply 15,000 such generators to Jeevandeep Multipurpose Pvt. Ltd under
the centre's programme 'Nirmal Jal Abhiyan' and plans to flood the
market with the products from February, as the summer sets in.
Available
at present in two models, with three technology patents, the Air-Water
Generator (AWG) can create between nine and 30 litres of water daily
depending on the average humidity of very low to high, he said.
"We
are all aware that water conservation is an important issue. With India
facing water shortage or contamination problems, we must explore more
non-conventional ways of sourcing and utilizing water to combat scarcity
and contamination," said Asthana, whose company has now tied up with
industrialist Dilip Piramal, the promoters of VIP luggage.
However,
the technology to produce water from the air is not new and has been
around in the US, Australia, Israel and some other countries for several
years.
"The only problem was they don't work in very low
humidity conditions, the machines are very expensive and consume a lot
of power, making them beyond reach of the masses," Asthana explained.
For
instance, similar machines work only with minimum 50-60 percent
humidity levels, consume around two units power per litre and cost over
Rs.200,000 per piece.
He went about indigenizing the technology,
created nearly three dozen prototypes and tested them all over India in
various humidity levels, including as low as 30 percent (During the
winter season, Mumbai occasionally goes down to 10 percent).
The
two models finalized were found most suitable to Indian conditions,
producing between 9-30 and 10-40 litres water, consuming between 0.6-1.2
units per litre, with the 28-kg generators costing Rs.21,000 and
Rs.24,000 respectively.
Soon, the company plans to introduce AWGs
with solar power panels and a battery operated portable models,
slightly expensive, but can be used in offices, picnics or outdoor
parties in remote areas, he added.
The solar panels will help the
customers to save on electricity during daytime, and with batteries,
they can use the stored energy for domestic purposes round-the-clock and
go off the power grid totally, Asthana said.
"The unique
features of the AWGs include manufacture under patented technology of
plasma treatment, distributed and perforated heat exchanger which
guarantees absolutely hygienic water, safe for infants and sick people,"
Asthana said.
Bouyed by the initial response from the
test-marketing, the company has set up a full-fledged manufacturing
plant in Vasai, adjoining Thane district, with a capacity of upto
240,000 units per annum.
Discussing the drinking water scenario,
Asthana said in many water scarcity areas or areas of ground water
contamination like in some villages of Punjab and Gujarat, besides
perpetual drought situations like in certain regions of Maharashtra, the
AWGs could prove to be a boon.
"Being an Indian invention with
lowest cost coupled with the most energy efficient technology, the AWGs
can be made available all over the country at a subsidized rate to solve
the drinking water problems confronting millions in Indian villages."
The
ElectroWater Technologies Pvt. Ltd., which has bagged the Ministry of
Chemicals and Fertilisers Award in the category of Polymers for Public
Welfare, also hopes to build a community model which can produce 5,000
litres of water per hour.
In view of the low cost and high
efficiency technology, Asthana sees a potential global market for AWGs
as water problems plague many countries in the world.
"With
proper encouragement and benefits, this can even generate a lot of
foreign exchange for India," said Asthana whose company has pioneered
low-cost and low-energy consuming portable air-conditioners, besides
marketing bladeless fans.
(Quaid Najmi can be contacted at [email protected] )