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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…