EWA Tech is dedicated to provide
alternative solutions in the fields of
water and energy and to contribute to
the global efforts to protect the
environment.
Few facts about water
1/6 of world population dose not have access to safe water.
Every minute one person in India die from a water related disease.
Every minute 4 persons across the world die from water related disease.
In North America average person consume 105.7 gallons of water per day.
In Europe average person consume 52.8 gallons of water per day.
In developing countries average person consume 1.3 gallons of water per day.
As population grows, the availability of water decreases.
Global worming cause chronic drought in more and more area every decade.
Few facts about water from air
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Air humidity is an unlimited renewing water resource
&
1 m3 of air contains 10 to 40 grams water vapors
Accordingly
There are 10,000-40,000 tons of water in 1km air
&
EWA’s plant that extract water from 1
3
cubic km of air per day will produce more
than 3 million cubic meter of fresh water
per year!
The Atmospheric Ocean
2/3 of the globe are covered by oceans.
100% of the globe is covered by the ‘Atmospheric Ocean’.
100% of the word’s population is living on land.
The water in the Atmospheric Ocean is salt-free, fast
renewing and available free of charge to any mankind.
EWA’s technology enable to capture the
water from the Atmospheric Ocean (air
humidity) in order to supply fresh water
almost everywhere at reasonable price.
Few facts about water from air
All water available on earth originated from
the atmosphere.
&
Natural precipitation are contaminated by
air pollution.
&
Upon storage, many pollutants, such as
industrial, fertilizers, pesticides, sewage
and air-pollution accumulate in the water.
The Problems
 Deficiency in Fresh Water
 Lack of Access to Fresh Water
 Low Sanitation & Hygiene
 Limited Infrastructure

Deficiency in Fresh Water
More than billion people suffer from
shortage and/or inadequate drinking water
every day.
According to the Population Action
International, by 2025 more than 2.8 billion
people in 48 countries will face water
deficiency ranging from severe water
shortages to major life-threatening crises,
Water
unless dramatic solutions
deficiency
are introduced.

Limited Access to Fresh Water
More than 25% of the global
population are leaving without
access to piped fresh water ,
most of them are in Africa,
Asia and South America.
 Low Sanitation & Hygiene
Every 8 seconds child in the developing
countries die from disease caused by
unsafe drinking water.
Food and water are major causes of life
threatening diseases.
One Quarter of the world population suffering
from the lack of safe drinking water.
Water pollutants, originated from industries,
agriculture and urban activities cause cancer,
brain-damage and other severe diseases.
 Limited Infrastructure
The rapid growth of population, urban and
rural, and accompanying growth in industry
and agriculture force governments to
enlarge infrastructures for water treatment
and transport in order to provide fresh
water, but…
The existing budgets are
insufficient to fulfill all
demands.
The EWA Goals:
Suitable almost for all climates conditions, all over the globe.
Low dependency on the ambient air humidity.
Low energy consumption.
Utilization of all types of energy sources, including low-cost heating
sources such as waste and solar heat.
Water can not be contaminated by airborne microorganisms.
Air pollution dose not affect water quality.
Suitable for every capacity from 10 liter to 1,000 cubic meters per day.
Modular system, which could be adjusted to the consumer's actual needs.
The EWA’s Plants are able to supply
water at the place of consumption,
without the need for long and expensive
pipe systems.
The Technology
EWA Technology involves three complementary processes:
1. Adsorption of water from the air on solid desiccant.
2. Desorption of the absorbed water.
3. Water condensation and quality adjustment.
Scheme of the Basic EWA Technology
Blower
Adsorption/
Desorption
Unit
Filter
Controlling valve
Heater
Condenser
Minerals
Cold stage
Hot stage
Water
EWA III – 3rd generation of the EWA Technology
Cold stage (adsorption)
Hot stage (Desorption)
EWA III composed multi stage adsorbtion/desorption unit with pressure
condenser that enable recovery 90% of heat energy need to be invested.
Patent application IL195444-08
Water capacity of 5,
10, 25, 100, 200, 300
and up to 1,000 cubic
meter of water per day
Control
Adsorption/D
esorption
unit
Condenser
EWAIII10
EWAIII5
How its’ working…
Stage 1 – Door opens, air flows in and
released dry (10,000m3/h).
Stage 2 – Door closes, lower blower turns
off, the valve of the heat exchanger opens
and the circulated air is heated to 85oC.
Stage 3 – Steam valve opens and the steam
are sucked out by a piston and pressed into
the condensation container.
Stage 4 – Steam are condensed in the
condensation container and pumped out as
water.
Stage 5 – Latent and pressure heat are
being returned to the heat storage tank.
Stage 6 – Heating and steam valves are
closed, followed by door opening.
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2.5m
15m
18m
EWA III's are modular water plants, based on EWA III10 element, which could be
combined in various options, up to 200 units. The area required is 1squar meter for
daily production of 1m3 of water
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5m
For large water plants, EWA-Tech offers its unique Gasification technology to reduce
energy expenses and minimize carbon emission.
Influence of air humidity on water
cost/production
140
120
100
80
60
40
20
0
20
40
60
80
100
Relative humidity (% )
EWA III is almost not influenced by the ambient Relative Humidity.
Water Quality
EWA's plants produce high quality water
that stands all demands for drinking water,
without the need for water treatment.
www.wt-ewa.com