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Water Purification in Cambodia. UWAter University of Western Australia EWB Challenge 2008 Jessica Equid Tom Pope Andrew Stead John Verran Patrick DonovanBeau Mavric. Problem Definition. 80% of deaths in Cambodia result from water borne illnesses - PowerPoint PPT Presentation
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Water Purification in CambodiaUWAterUniversity of Western AustraliaEWB Challenge 2008
Jessica Equid Tom PopeAndrew Stead John VerranPatrick Donovan Beau Mavric
Problem Definition
• 80% of deaths in Cambodia result from water borne illnesses
• Lack of sufficient, cost effective filters available
• Villagers source up to 16% of their water from deep wells– contains unsafe levels of arsenic
• Drinking water standards– pathogens, microorganisms and turbidity
eliminated• Cheap, Simple, Long-lasting water
filter surface water
deep wells
shallow wells
stored rainwater
bottled water
Solution
Solution - Backwashing
Prototype Construction
Prototype Construction
Prototype Construction
Prototype Construction
Prototype Construction
Prototype Construction
Prototype Construction
Turbidity Testing
• Utilised scale prototype• Visual and taste tests performed on discharge
from unit
Turbidity Testing
• Utilised scale prototype• Visual and taste tests performed on discharge
from unit
INPUT OUTPUT
Arsenic Removal Testing
• Small scale prototype constructed• Varying concentrations of arsenic
tested• Reduced arsenic to safe levels
– average reduction 90%
Sand mixtureIron nails
Implementation
• Locally available resources• Local Labour & Construction• Project Costing
– cost of materials for single filter, estimated to be less than $500• Monitoring and maintenance
– ensure filter provides safe water for extended time period• Waste Management
– safe disposal of all wastes
Kanchan Life Straw Ceramic Water Purified Sono 3-Kolshi UWA Community Filter0
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Filter Cost Per User
Implementation
• Locally Available Resources• Local Labour & Construction• Project Costing
– cost of materials for single filter, estimated to be less than $400• Monitoring and maintenance
– ensure filter provides safe water for extended time period• Waste Management
– safe disposal of all wastes
Impact assessment
• Environmental– arsenic sludge removal and disposal– all materials can be recycled
• Economic – local industries supported– jobs created– minimal ongoing costs
• Social– increased local knowledge base– Improve community health
Summary
• Filter is cheap, simple, long-lasting• Proven to be affective• Implementation and impacts considered and evaluated
