Final Year Project Progress 01

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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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Progress Evaluation

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Healthy Sri Lanka
Product of Sri Lanka
Best for Sri Lanka

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Proposed Time Schedule

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What we had to do…
Follow the suggestions given at the proposal
presentation section.
Further research phase.
Designing Phase

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What we have done…

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Suggestion by judge panel
- Effect of CKDs in Sri Lanka
- Reasons for kidney disease in Sri
Lanka
- Present Projects on Arsenic in Sri
Lanka
- Pay attention over treatment of other
metals.
- Simplify the apparatus.

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Effect of CKDs in Sri Lanka
More than 15 percent of the population aged 15–70 years in
the North Central and Uva provinces are affected with CKD.
Over 22,000 deaths from the disease have been recorded in
the Anuradhapura district in the North Central Province since
CKD was first identified in 1991.
Over 1,100 CKD patients are hospitalized per month in Sri
Lanka and 300 deaths recorded per year. The death rate,
however, is actually higher than this because many of the
victims die at home
WHO Report

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Reasons for kidney disease in
Sri Lanka
Poor diet
Chronic exposure to cadmium or kidney-damaging pesticides
Arsenic and lead
Genetic susceptibility to kidney failure
Use of ayurvedic or indigenous herbal remedies containing
the sapsanda plant.
• ,
Dr. Shantha Mendis,
WHO’s senior coordinator
Chronic disease prevention and management

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Present Projects/Researches
on Arsenic and Sri Lanka
Arsenite Removal from Drinking Water using naturally available
Laterite in Sri Lanka. Use “ Cabook” which has Fe2O3, Al2O3, and
SiO2. Materials containing Fe, Al and SiO2 can remove arsenic from
drinking water efficiently.
A simple clay filter to strain out kidney
disease ‘culprits’
Agro well projects

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Further research phase.
- Why Electrocoagulation
- What is Electrocoagulation
- Factors affected for Electrocoagulation

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Why Electrocoagulation
• No chemicals.
• Less sludge.
• Low initial cost.
• Easy maintenance.
• Less voltage requirement can be
supplied with solar or wind.
• High effectiveness.

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What is Electrocoagulation

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What is Electrocoagulation
Selecting Electrodes
Ref:source

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Factors affected for Electrocoagulation
Current Density
Where
- m is the mass liberated from the anode (g),
- I is the current (A),
- t is reaction time(s),
- M is molar mass (g/mol), =for Al, M=26.98 g/mol;
- z is valence number=for Al, Z=3
- F is Faraday’s constant (C/mol)=(96,486 C/mol).
𝑚 =
𝐼. 𝑡. 𝑀
𝑧. 𝐹

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Where
R - resistance
k - conductivity of the electrolyte
I - distance between electrodes
A - cross sectional area of the electric field
R=
1
𝑘
𝑙
𝐴
For Large, plate electrodes spaced closely together, the cross section
area between electrodes.
By Ohm's Law
V = IR

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•pH Factor
•O2 supply rate
•Temperature
•Etc.

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Designing Phase
• CAD design.
• Fabrication phase.

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Designing Phase
Our Product.

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What is ultra violet treatment
UV- purifier
source

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Designing Phase
Fabrication Phase.
- Our testing apparatus

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What is Next...
Testing…
With the help of
Civil and Environmental Department-
University of Ruhuna.

Final Year Project Progress 01

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Editor's Notes