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WATER, WATER,EVERY WHERE,BUT NOT A DROP TO DRINK
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Department Of Mechanical & Manufacturing EngineeringFaculty of EngineeringUniversity of Ruhuna
HapugalaGalle
Sri Lanka
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AdvisorDr. Ruwan Gallage
Co-Advisors
Dr. SrimalMr. VedhithaMr. T. Ranjan
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DOMESTIC WATER
PURIFIERWickramarathne 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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What we had to do…
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.
• Follow the suggestions
given at the proposal
presentation section.
• Further research phase.
• Designing Phase
What we have done…
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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 coordinatorChronic 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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What we had to do…
Further research phase.- Why Electrocoagulation
- What is Electrocoagulation
- Factors affected for Electrocoagulation
Follow the suggestions
given at the proposal
presentation section.
• Further research phase.
• Designing Phase
What we have done…
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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 ElectrocoagulationSelecting Electrodes
Ref:source
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What is Electrocoagulation
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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 .𝑀𝑧 .𝐹
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WhereR - resistancek - conductivity of the electrolyteI - distance between electrodesA - cross sectional area of the electric field
R=
For Large, plate electrodes spaced closely together, the cross section area between electrodes. By Ohm's Law V = IR
Factors affected for Electrocoagulation
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Factors affected for Electrocoagulation
• pH Factor
• O2 supply rate
• Temperature
• Etc.
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What we had to do…
Designing Phase• CAD design.• Fabrication phase.
Follow the suggestions
given at the proposal
presentation section.
Further research phase.
• Designing Phase
What we have done…
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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 PhaseFabrication Phase.- Our testing apparatus
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What is Next...
Testing… With the help of
Civil and Environmental Department- University of Ruhuna.
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THANK YOU…
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