Proposal presentation of our final year project...includes - Water and life - Water Purification Technologies - Our proposed solution - Estimated budget -Etc.

1. Page 1

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DO WE HAVE ENAUGH
WATER ?
DO WE HAVE DRINKABLE
WATER?

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40% Population has organized
water supply.
59.4% is depending on other sources
such as well, river, stream
Including 10% unprotected
sources.
IN OUR COUNTRY

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MAJOR IMPURITIES PRESENT I
DRINKING WATER
• Bacteria
• Virus
• Dirt and sediment
• Chlorine
• Lead
• Arsenic

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Here Comes ….
Important Of PURIFICATION!

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Department Of Mechanical & Manufacturing Engineering
Faculty of Engineering
University of Ruhuna
Hapugala
Galle Sri Lanka

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Advisor
Dr. Ruwan Gallage
Co-Advisors
• Dr. Srimal
• Mr. Vedhitha
• Mr. T. Ranjan

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DOMESTIC
WATER
PURIFIER
Wickramarathne G.T (EG/2012/2111)
Thiviyanesan K. (EG/2012/2098)
Thajivan S. (EG/2012/2090)

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WATER PURIFIER
Water purification is the transition of dirty harmful
water into clean safe water.
IN SRILANKA
-BOILING
-CHLORINATION
DISADVANTAGES
Bad smell and taste
Organic chemical
could be formed.

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COMMON TYPE WATER FILTER
Ultra Violet WATER TREATMENT

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REVERSE OSMOSIS

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DISTILLATION
Remove Salts..sediments..bacteria..etc..
No VOC removed.

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SLOW SAND FILTER
 Low energy requires…
 Low cost
But…
 Very slow…Heavy…

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ARSENIC REMOVING METHODS
 Oxidation
 Coagulation and filtration
 Activated alumina
 Granular ferric hydroxide

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ACTIVATED CARBON FILTER
• Most effective at removing
Chlorine, sediment , VOC, taste and odor
• Not effective at removing minerals, salts
and dissolved inorganic compounds

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Technology Money

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Healthy Sri Lanka
Product of Sri Lanka
Best for Sri Lanka

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Our Design

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How to remove salt taste and
hardness of water?

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How to remove the arsenic?
Theory :

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How to remove the arsenic?

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How to remove the arsenic?

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How to remove the
 VOC’s
 Insecticides and weedicides
 Bad taste and odors
 Chlorine
 Radon and
 Etc…

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Methods of manufacturing
activated carbon filter…
Clean coconut
shell
Sun dry.
Burn dried coconut
shell at
300-500 C for 3-5
hours.
Soak charcoal in
CaCl2 or ZnCl2
for 12-18 hours.
Wash charcoal
with distilled water
Spread on tray at
room temperature
to be drained.
Dry in oven at
temperature 110 C
for 3 hours.
Crushing
Pack activated
charcoal in plastic
vessel

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How to remove viruses, bacteria
and other micro-organisms?
UV- purifier

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Proposed time schedule

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Budget( Approximately)
• Fabrication – Rs. 10,000
• Testing and other – Rs.10,000