Urine Diversion in Durban -...
Transcript of Urine Diversion in Durban -...
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Håkan Jönsson Farewell Symposium25 October 2017
Urine Diversion in Durbanhas it exceeded the original vision?
Chris Buckley
Pollution Research GroupUniversity of KwaZulu-Natal
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Durban Background
• 2000 Cholera outbreak• Full-scale roll-out of free water, sanitation
and hygiene education to unserved• 60,000 full VIP toilets
– how to empty?• Urine diversion toilets (80,000)
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Urine and Faeces Separated at Source
NB: NOT RECYCLED
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Urine Diversion Closet
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Bill Gates
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• 5 days of discussions and field trips• 81 presentations
Regional 2-week course in Kimberley on Ecological Sanitation (15 Jan 2005)
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Those were the days, my friend ...2005
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Third International Conference on Ecological Sanitation
The provision of sustainable sanitation services to peri-urban and rural communities in the
eThekwini (Durban) municipality
Neil Macleod(CEO eThekwini Water and Sanitation)
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The Research Agenda
• The impact of UD toilet waste and urine on the environment, including crops grown in the waste material
• The use of grey water for urban agriculture• Analysis of the drying process of the
faecal matter in the UD toilet vaults• The impact of UD toilets on community
health, particularly in areas where no proper sanitation service existed previously
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STUDY AIM
• To evaluate the health outcomes of dry sanitation, water provision and hygiene programmes in the peri-urban areas of eThekwini Municipality.
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Episodes of Diarrhoea & Vomiting Averted
Total episodes of diarrhoea reducedEpisodes averted X Households X People / household= .51 X 56377 X 5.4= 155 262 episodes of diarrhoea averted
Episodes of diarrhoea reduced in < 5 year oldsEpisodes averted / children < 5 years= 1.3 X 30 000= 39 000 episodes of diarrhoea averted
• eThekwini Municipality – Water and Sanitation Unit; • World Health Organisation (Geneva)• Swedish Institute of Infectious Disease (Sweden)
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PRG test site: Preparation of columns containing soil and buried waste from urine diversion toilets
Dry waste
Wet waste
Mixed waste
Filling waste into columns
Construction of concrete columns
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Focus on Entire Value Chain
BMGF
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A Practical Demonstration
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Durban Ecosan Course 2008
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Urine Nitrification Reactor
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Reuse Trials of Products
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2008
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2013
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2008
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2013
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UD Sludge Processing
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Viscous Heater at Isipingo
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New ISO Standard
Durban 27 to 30 June 2017
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IWA publication (in progress)
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Reflections• Cholera• Municipality with vision• Government Subsidy• Research support – PRG• Vuna Hypothesis – pay people to use toilet• Need to develop a policy• San policy – recognise not just 1 system• Don’t like but use• No retail sales• Need ceramic pedestal• Not a profit but a lower cost• Emerging concerns – CEC – path, gene transfer• Aim for reuse, but cautious implementation• Aha – not all get a free service• Overtaken by progress – low flush• Local industry• Design – away from house
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Urine Diversion in Durbanhas it exceeded the original expectations?
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Urine Diversion in Durbanhas it exceeded the original expectations?
Yes !!!It has ….
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Acknowledgements
• eThekwini Water and Sanitation– Neil Macleod– Teddy Gounden– John Harrison– Bill Pfaff– Dave Wilson
• WRC– Jay Bhagwan
• Partners in Development– Dave Still
• EnviroSan– Jacques Rust