Witeam Commercial (Int’l) Limited
SOLAR DESALINAION SYSTEM
Clean & High Efficiency Background of Solar Application
Suitable for Waste Water, Hard Water, Shallow Surface Seawater, Deep
Seawater, Brackish river Water, Beach Well ◙ Quality ◙ Security ◙ Efficient
◙ Independence ◙ Energy Conservation
1. Quality of Water
With distillation by the energy of the
sun water evaporates and condenses
afterwards as high-purity water. For
this reason water of highest quality is
for you all time at disposition.
2. Security of Supply
The sunbeams, which achieve the
earth alone on the today's day, could
cover the world power requirement for
Water Resources Renew & Comprehensive 180 years. The sun is our only
inexhaustible energy and reliable
Utility of Clean Energy source.
3. Efficient
We utilize clean energy—Ultra red solar optical technology, Vacuum distillation,
Though utility of heat recycling, it will
etc. to combine collecting of water resources, solar energy concentration,
only take several minutes from
desalination and treatment of water, water distribution etc. and sustainable
preheating, desalination to fresh
renewable energy in an integrated systems, to provide high efficient, low
water.
consumption, reliable long lasting water supply system.
4. Independence
Our Objective
Dedicated to fresh water and clean water supply at far-remote and dry areas, As self operator you are independent
which the Operation Cost is only up to 1/10 against Reverse Osmosis (RO). of the quality of public water supply.
Water Resources 5. Energy Conservation
We consider when various quality water can be used, how about the volume and
95% of the consumed energy is of
quality of the water, and will propose all kinds of technical solutions based on local
solar, electricity is only contribute to
geographical conditions, to design the clean energy-solar energy desalination and
pumping water by centrifugal pump, or
purification system to the maximum extent.
water transmission from water
Drink Water pipelines by high pressure pump,
We source different ways to reduce energy consumption, and maintain long
which is of very low power load and
lasting water supply.
save energy dramatically. The system
Multi Stage Utility can fitted with solar energy power, to
Water after desalinated, can be used for irrigation, gardening, swimming pool, or
out of electricity system completely.
flush WC, bathing.
Multi Stage Treatment
----- Witeam Solar Energy
Water after desalinated and purified, heating energy will be used to heat the swim
pool, hot bathing, and industrial production of strong brine by condensation.
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

SYSTEM INTRODUCTION
We adopt vacuum distillation technology, which collects and
concentrate the sun power as power of desalination of water to
realize supply of fresh water.
Within in a vacuum environment, pressure reduction is low,
desalination of pure water realized from the impurities in high
temperature.
SYSTEM FEATURE
1. By taking a series of technical 4. System power consumption is low.
measurements, corrosion and sediment of the Power consumption for water delivering is very
equipments being completely avoided or low in low temperature and multi-effect, only
delayed. need hundreds of volts electricity (on vacuum
environment and suction pump), solar power
2. Pretreatment of intake seawater is much
system can be self-fitted, no need power station
more simplified which is benefited from low
facility which can reduce production cost.
system operation temperature. Only need to be
filtered by filter screen before flowing into the 5. High system heating efficiency.
low temperature and multi-effect devices, no Temperature difference of 30℃ can arrange 12
need additive agent like acid-adding treatment heat transmit effect ratio, then can reach water
like the multi-stage flashing method which can production ratio of 10 or so.
save a lot. 6. Safe and reliable system operation. As
3. Plenty redundant designed system. At noon, low temperature and multi effect system is of
production of water can reach 120% of the tube condensation and tube film type evaporator,
designed value; at early morning and nightfall even leakage of heat transmitting tube occurred
period, production of water can be stable at 20% by corrosion, as the pressure of vapor side is
of rated value. bigger than the pressure of film side, high
salinity water cannot flow into the product water,
Seperating Tube the similar failure are avoided that the system
adopts high reliable module design with much
greater safety.
7. Close production system, well control of
the flow.
8. Sensor fitted behind of every
concentrating mirror of the solar desalinating
unit, for auto sun tracking, simple but practical.
9. Small dimensions of the production
equipments, more applicable for big scaled
production.
10. Product water is pure water up to WHO drinking water standard that is for direct drinking.
11. All type of natural water source can be treated.
12. The Solar Sea Water Desalination System is used for household, Sea land resorts village,
hotel, mining and factories, community, large town etc. User Friendly!
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

PRINCIPLE OF OUR SOLAR DESALINATION SYSTEM
1. Collection;
2. Filtering (filter screen);
3. Sedimentation;
4. Preheating (Preheating pool or Glass house);
5. Heating (Parabolic Vacuum tube focusing & Ultraviolet heating, temperature will reach 70-80 ℃);
6. Desalination (Rotating parabolic mirror focusing on Vacuum tank, temperature will reach 100℃) Fresh
water and high salinity seawater being desalinated;
7. Cooling down by exchanging heat (high salinity seawater application pipeline, passing the preheating
pool, cooling down by ex-changing heat to preheat the taking in seawater);
8. Output fresh water (output desalinated water, turbidity is 0.5 utn, up to Drinking water standard of
WHO);
9. Discharge high salinity seawater10. Application of high salinity seawater (distill heavy water D2O,
KCl, NaCl etc.)
COMPREHENSIVE PERFORMANCES COMPARISON
Parameter Our System Reverse Osmosis
Energy Consumption (KW/T) 0.5 KW 5~9 KW
Dimension (m2/T) 30 m² 0.1 m²
Three Wastes Emission None Little
Stability Normal Good
Maintenance Simple Complex
Cost of Pure Water for 20 Years US$ 0.15/Ton US$ 8.00/Ton
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

INSTRUCTION TO INSTALLATION
& AFTER SALES SUPPORTING
1. Installation, application & Operation manual of Solar
Desalination System will be provided;
2. For large Size (Community model, daily production rate
10000L/day and above), Medium Size (factory model, daily
1000L/day and above) system, onsite investigations for the
mounting location and meteorological conditions;
3. For scales production, visit to local civil water supply will be accompanied by clients;
4. After sales and supporting: for buyer of the year, 2 persons will be trained freely, and 10 years spare parts
to be supplied for large and medium size systems.
PRODUCTS SPECIFICATIONS
1. Residential Household Model:
Description: Suitable for household use, easy to install and move, only 2 M2 mounting area.
SWD-H100L
Fresh Water Output > 100L / Day Concentrating Mirror Dimension 1.8 m x 1.2 m x 1 unit
Automatic Sun Tracking Yes Concentrating Mirror Weight 30 Kg
Tracking Mode Electric Driven Solar Cell Dimension 3 x 1 x 0.1 m
Energy Concentrating Power > 2,500W Regular Service 7 Days
Working Voltage 12v Power Consumption Rate 100w
Water Feed Mode Automatic / Manual Product Type Reflecting and Infiltration
Suction Height 3m MTBF > 1 Year
Protection Alarm Yes Life Cycle > 20 Years
Feed Water Quality Category III Total Weight 50 Kg
Up to WHO drinking water
N32 – S32
Output Water Quality
standard
Suitable Dimension Range or strong sunshine hours
2
2 m2
over 8 Mounting Coverage (m )
Package List
Name Qty. Name Qty.
Concentrating Board 1 Water pipe 1
Fresh Water Tank 1 Automatic Bracket 1
Sea water tank 1 Instruction Manual 1
Desalination Tank 1 Quality Guarantee Certificate 1
Control Box 1 MOQ: 100 Set
Note: Power of 12v, 100w is needed, Solar energy
Actual output water quantity is 130% of the designed value
power system can be fitted
US$ 490.00 / Unit
FOB China Price
(No solar energy power system)
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

2. Factory Model
Description:
Factory model is medium size fresh water system, suitable
for factories, enterprises, small communities. Latitude
between N32’ to S32’, total mounting coverage is 30 M2
for the swivel parabolic mirror and the system while the
fresh water production rate is 1 ton (100,000L). It can be
enlarged into 5 Tons, 10 Tons, 20 Tons, 50 Tons according
to client’s request.
SWD-1T
Fresh Water Output > 1 T / Day Concentrating Mirror Dimension 1.8 m x 1.5 m x 8 units
Automatic Sun Tracking Yes Concentrating Mirror Weight 300 Kg
Tracking Mode Electric Driven Solar Cell Dimension 3 x 1 x 0.1 m
Energy Concentrating Power > 20 KW Regular Service 7 Days
Working Voltage DC 12v Power Consumption Rate 500W
Water Feed Mode Automatic / Manual Product Type Reflecting and Infiltration
Suction Height 3m MTBF > 1 Year
Protection Alarm Yes Life Cycle > 20 Years
Feed Water Quality Category III Total Weight 600 kg
Up to WHO drinking water
N32 – S32
Output Water Quality
standard
Suitable Dimension Range or strong sunshine hours
2
30 m2
over 8 Mounting Coverage (m )
Package List
Name Qty. Name Qty.
Concentrating Board 8 Water pipe 200 m
Fresh Water Tank 4 Automatic Bracket 8
Sea water tank 4 Instruction Manual 1
Desalination Tank 4 Quality Guarantee Certificate 1
Control Box 4 MOQ: 10 Set
Notes: Power of 12v, 500w is needed; Solar energy
Actual output water quantity is 130% of the designed value
power system can be fitted.
1. Water to be desalinated/purified should up to local desalination water standard
(contents of salts not included)；
2. To be mounted in plain area, elevation no more than 0.5m.
Technical Requirements
3. Good geological conditions, no slope, cave in and swamp;
4. Height of mounting plain no more than 2m;
5. Solar energy powder system can be fitted.
US$ 4,470.00 / Unit
FOB China Price
(No civil engineering and installation, no solar energy power system)
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

SWD-5T
Concentrating Mirror
Fresh Water Output > 5 T / day 1.8 m x 1.5 m x 40 units
Dimension
Automatic Sun Tracking Yes Concentrating Mirror Weight 1500 Kg
Tracking Mode Electric Driven Solar Cell Dimension 3 x 1 x 0.1 m
Energy Concentrating Power > 50KW Regular Service 7 days
Working Voltage DC 12v Power Consumption Rate 2 KW
Water Feed Mode Manual / Automatic Product Type Reflecting and Infiltration
Suction Height 3m MTBF > 1 year
Protection Alarm Yes Life Cycle > 20 years
Feed Water Quality Category III Total Weight 3 tons
Up to WHO drinking water
N32 – S32
Output Water Quality
standard
Suitable Dimension Range or strong sunshine hours
2
150 m2
over 8 Mounting Coverage (m )
Package List
Name Qty. Name Qty.
Concentrating Board 40 Water pipe 1000 m
Fresh Water Tank 20 Automatic Bracket 40
Sea water tank 20 Instruction Manual 1
Desalination Tank 20 Quality Guarantee Certificate 1
Control Box 20
Actual output water quantity is 130% of the
Notes: Power of 12v, 2kw is needed, Solar energy power
designed value
system can be fitted
1. Water to be desalinated/purified should up to local desalination water standard
(contents of salts not included)；
2. To be mounted in plain area, elevation no more than 0.5m.
Technical Requirements
3. Good geological conditions, no slope, cave in and swamp;
4. Height of mounting plain no more than 2m;
5. Solar energy powder system can be fitted.
US$ 21,500 / Unit
FOB China Price
(No civil engineering and installation, no solar energy power system)
Preheating Tube Standard Unit
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

SWD-10T
Concentrating Mirror
Fresh Water Output > 10 T / days 1.8 m x 1.5 m x 80 units
Dimension
Automatic Sun Tracking Yes Concentrating Mirror Weight 3000 kg
Tracking Mode Electric Driven Solar Cell Dimension 3 x 1 x 0.1 m
Energy Concentrating Power > 200 KW Regular Service 7 days
Working Voltage DC 12v Power Consumption Rate 2 KW
Water Feed Mode Automatic Product Type Reflecting and Infiltration
Suction Height 3m MTBF > 1 year
Protection Alarm Yes Life Cycle > 20 years
Feed Water Quality Category III Total Weight 6 tons
Up to WHO drinking water
N32 – S32
Output Water Quality
standard
Suitable Dimension Range or strong sunshine hours
2
400 m2
over 8 Mounting Coverage (m )
Package List
Name Qty. Name Qty.
Concentrating Board 80 Water pipe 2 Km
Fresh Water Tank 40 Automatic Bracket 80
Sea water tank 40 Instruction Manual 1
Desalination Tank 40 Quality Guarantee Certificate 1
Control Box 40
Actual output water quantity is 130% of the
Notes: Power of 12v, 2Kw is needed, Solar energy
designed value
power system can be fitted
1. Water to be desalinated/purified should up to local desalination water standard
(contents of salts not included)；
2. To be mounted in plain area, elevation no more than 0.5m.
Technical Requirements
3. Good geological conditions, no slope, cave in and swamp;
4. Height of mounting plain no more than 2m;
5. Solar energy powder system can be fitted.
US$ 38,500/ Unit
FOB China Price
(No civil engineering and installation, no solar energy power system)
Solar Concentration Arrays Desalination water irrigation
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

SWD-20T
Concentrating Mirror
Fresh Water Output > 20 T / days 1.8 m x 1.5 m x 160 units
Dimension
Automatic Sun Tracking Yes Concentrating Mirror Weight 6 tons
Tracking Mode Electric Driven Solar Cell Dimension 3 x 1 x 0.1 m
Energy Concentrating Power > 400 KW Regular Service 7 days
Working Voltage DC 12v Power Consumption Rate 4 KW
Water Feed Mode Automatic Product Type Reflecting and Infiltration
Suction Height 3m MTBF > 1 year
Protection Alarm Yes Life Cycle > 20 years
Feed Water Quality Category III Total Weight 12 tons
Up to WHO drinking water
N32 – S32
Output Water Quality
standard
Suitable Dimension Range or strong sunshine hours
2
1000 m2
over 8 Mounting Coverage (m )
Package List
Name Qty. Name Qty.
Concentrating Board 160 Water pipe 4 km
Fresh Water Tank 80 Automatic Bracket 160
Sea water tank 80 Instruction Manual 1
Desalination Tank 80 Quality Guarantee Certificate 1
Control Box 80
Actual output water quantity is 130% of the
Notes: Power of 12v, 4Kw is needed, Solar energy
designed value
power system can be fitted
1. Water to be desalinated / purified should up to local desalination water standard
(contents of salts not included)；
2. To be mounted in plain area, elevation no more than 0.5m.
Technical Requirements
3. Good geological conditions, no slope, cave in and swamp;
4. Height of mounting plain no more than 2m;
5. Solar energy powder system can be fitted.
US$ 75,200 / Unit
FOB China Price
(No civil engineering and installation, no solar energy power system)
Desalination water irrigation Solar Concentration Array
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

SWD-50T
Concentrating Mirror
Fresh Water Output > 50 T / days 1.8 m x 1.5 m x 400 units
Dimension
Concentrating Mirror
Automatic Sun Tracking Yes 15 tons
Weight
Tracking Mode Electric Driven Solar Cell Dimension 3 x 1 x 0.1 m
Energy Concentrating Power > 1000 KW Regular Service 7 days
Power Consumption
Working Voltage DC 12v 10 KW
Rate
Water Feed Mode Automatic Product Type Reflecting and Infiltration
Suction Height 3m MTBF > 1 year
Protection Alarm Yes Life Cycle > 20 years
Feed Water Quality Category III Total Weight 30 tons
Up to WHO drinking water
N32 – S32 Output Water Quality
standard
Suitable Dimension Range or strong sunshine
Mounting Coverage (m2) 2400 m2
hours over 8
Package List
Name Qty. Name Qty.
Concentrating Board 400 Water pipe 10 km
Fresh Water Tank 200 Automatic Bracket 400
Sea water tank 200 Instruction Manual 1
Quality Guarantee
Desalination Tank 200 1
Certificate
Control Box 200 Actual output water quantity is 130% of the
designed value
Notes: Power of 12v, 10Kw is needed
Technical Requirements
1. Water to be desalinated/purified should up to local desalination
water standard (contents of salts not included)；
2. To be mounted in plain area, elevation no more than 0.5m.
3. Good geological conditions, no slope, cave in and swamp;
4. Height of mounting plain no more than 2m;
5. Solar energy powder system can be fitted.
FOB China Price
US$ 1829,00 / Unit
(No civil engineering and installation, no solar energy power system)
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

3. Community Model
Description: Community model is comparatively
bigger desalination water system; it is used for
community, villages. Latitude between N32’ to S32’,
total mounting coverage is 5000 M2 for the swivel
parabolic mirror and the system while the fresh
water production rate is 100 tons (100,000L).
SWD-100T
Fresh Water Output > 100 T / days Concentrating Mirror Dimension 1.8 m x 1.5 m x 800 units
Automatic Sun Tracking Yes Concentrating Mirror Weight 30 tons
Tracking Mode Electric Driven Solar Cell Dimension 3 x 1 x 0.1 m
Energy Concentrating Power > 2 MW Regular Service 7 days
Working Voltage 压 DC 12v Power Consumption Rate 20 KW
Water Feed Mode Automatic Product Type Reflecting and Infiltration
Suction Height 3m MTBF > 1 year
Protection Alarm Yes Life Cycle > 20 years
Feed Water Quality Category III Total Weight 60 tons
Up to WHO drinking water
N32 – S32
Output Water Quality
standard
Suitable Dimension Range or strong sunshine hours
2
5000 m2
over 8 Mounting Coverage (m )
Package List
Name Qty. Name Qty.
Concentrating Board 800 Water pipe 20 KM
Fresh Water Tank 400 Automatic Bracket 800
Sea water tank 400 Instruction Manual 1
Desalination Tank 400 Quality Guarantee Certificate 1
Control Box 400 Video Surveillance System for 24 Hours
Notes: Power of 12v, 20Kw is needed Actual output water quantity is 130% of the designed value
1. Water to be desalinated/purified should up to local desalination water standard
(contents of salts not included)；
2. To be mounted in plain area, elevation no more than 0.5m.
Technical Requirements
3. Good geological conditions, no slope, cave in and swamp;
4. Height of mounting plain no more than 2m;
5. Solar energy powder system can be fitted.
US$ 349,000 / Unit
FOB China Price
(No civil engineering and installation, no solar energy power system)
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
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http://www.witeam.com.hk

4. Big Desalination System
Description: Big size water desalination system,
used for towns, big factories etc., daily
production 100T/day (100,000L) above, will
make systematical designing according to local
environments, geo location, and water supply
system etc.
CUSTOMER INFORMATION FEEDBACK
1. Latitude;
2. Meteorological condition;
3. Daily production scale;
4. Coast basis (for pipeline installation of big scale application).
Witeam Commercial (Int’l) Limited
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Beijing Office: Tel: (86 10) 8493 8433 Fax: (86 10) 5894 8640 E-mail: bj@witeamgroup.com
Hong Kong Office: Tel: (852) 6527 7869 Fax: (852) 3010 3483 Email: intl@witeamgroup.com
-------------------------------------------------------------------------------------------------------------------------------------------------------------
http://www.witeam.com.hk