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1. TECHNOLOGIES USED FOR CONVERSION OF SEAWATER TO
DRINKABLE WATER
Under the guidance of
Prof. MANJULA K
Assistant Proffesor
Dept of ECE
Dept. of ECE, SJCIT 1
Presented by:
||Jai Sri Gurudev||
S J C INSTITUTE OF TECHNOLOGY
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
TECHNICAL SEMINAR SYNOPSIS
LOKESH C USN:1SJ19EC086

2. 1. Introduction
2. Technology
3. Applications
4. Advantages
5. Future scope
6. References
OUTLINE
Dept. of ECE, SJCIT 2

3. 3
INTRODUCTION
Dept. of ECE, SJCIT
 The freshwater resources are nowadays increasingly short, seawater desalination is a
new technique for freshwater resources replacement, has been highly admired by
many countries and institutions.
 In recent years, research on seawater desalination gradually increased the concern
of researchers, and issues related to energy-efficient desalination has become a hot
spot. Methods usually include seawater desalination by freezing method, electro
dialysis, distillation, reverse osmosis.
Water scarcity problems

4. INTRODUCTION
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 The worldwide availability of fresh water is very limited but the demand of water
in the country is increasing at a rapid rate due to increased use of water for
irrigation, industrialization, population growth and improving the standard of
living.
 This increased demand for water has put pressure on water supply system, which
has lead to overexploitation of water resources, and breaks in the balance of the
ecosystem. Safe drinking water is essential to humans and other life forms but
increased amount of discharged sewage, chemicalization of agriculture and
industry, as well as anthropogenic activities all affects the quality of underground
water.
 The only inexhaustible source of water is the seawater which covers 94% of the
earth’s surface but this water contains about 3.5% salts. Brackish water is totally
unfit for drinking. When there is no other source of water there is no alternative
except to do the desalination of available water.

5. TECHNOLOGY
Reverse osmosis
Solar distillation method
Freezing Process
 Electro dialysis
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Solar distillation plant

6. APPLICATION
 Forward Osmosis
 Reverse Osmosis
 Desalination
 Geothermal
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Reverse Osmosis

7. ADVANTAGES
 Help with habitat protection
 Helps preserve current freshwater supplies
 Provides water to the agriculture industry
 Unlimited ocean water as source
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8. FUTURE SCOPE
• The desalination of brackish water and seawater proves to be a
reliable source of source of fresh water and is proves to be a
solution for the world’s water shortage problem.
Dept. of ECE, SJCIT 8

9. REFERENCES
 Pandey P.K and R. Upadhyay 2016. Desalination of Brackish Water using Solar Energy. International
Journal of Renewable Energy Research .
 Bilal Akash et.al “ENERGY OPTIONS FOR WATER DESALINATION IN UAE” 6TH international
conference on sustainable energy information technology(SEIT 2016), Procedia Computer Science 83
(2016 ).
 S.M. Shalaby, et.al “DESIGN RECOMMENDATIONS FOR HUMIDIFICATIONDEHUMIDIFICATION
SOLAR WATER DESALINATION SYSTEMS” 3rdInternational Conference on Energy and Environment
research, ICEER 2016, 7-11 September 2016.
 Giuseppe Franchini, Antonio Perdichizzi “MODELING OF A SOLAR DRIVEN HD (HUMIDIFICATION-
DEHUMIDIFICATION) DESALINATION SYSTEM” 68th Conference of the Italian Thermal Machines
Engineering Association, ATI2013 ,Energy Procedia 45 ( 2014 ).
Dept. of ECE, SJCIT 9

10. 10
THANK YOU
Dept. of ECE, SJCIT