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THE VULAMANZ RURAL WATER FILTER (VA-RWF)

The VA-RWF is a point-of-use household water treatment unit that removes suspended material, colloids, and water-borne pathogens from raw water, providing safe drinking water. It is an African technology addressing major challenges in Africa, with high user acceptance and sustainability. Economically attractive, it offers a promising option for drinking water provision to rural households.

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THE VULAMANZ RURAL WATER FILTER (VA-RWF)

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  1. THE VULAMANZ RURAL WATER FILTER (VA-RWF) … towards Safe Water and Improved Health in Africa ….

  2. THE CHALLENGE ….. Un-serviced rural and peri-urban communities currently consume raw water that may be contaminated with pathogens. This can result in diarrhoea, cholera, skin rashes etc, condemning these citizens to a downward spiral of poor health and poverty.

  3. VA-RWF Overview… • a point-of-use (POU) household water treatmentunit consisting of a microfilter and apost-disinfection step • removes suspended material, colloids, andwater-born pathogens to give a safe drinkingwater from raw waters contaminated with biological pathogens • based on a unique woven fabric microfiltration material developed in SA • developed by water researchers from SUN, DUT, SSU(US) and AIT(Thailand), sponsored by the WRC, DST and Umgeni water. • Significant input from Rural Communities in the development. • An African Technology addressing major challenges in Africa …

  4. The VA-RWF V1 …

  5. The VA-RWF : Operation … • pour raw water into feed tank • add 3-5 drops of Jik into 5 L product container • open tap and collect water !

  6. The VA-RWF : Cleaning … • Brush the membranes with the brush provided • Drain the tank … Usually once in two weeks to once a month…

  7. The VA-RWF : Product Quality … • Product turbidities < 1 NTU for feeds up to 300 NTU • Complete deactivation of faecal coliforms, from combinedaction of membranes and disinfectant • Will produce a safe drinking water from most African surface waters ….

  8. The VA-RWF: User Acceptance and Sustainability • DST-IPRD Project (and administered by WRC) – 2015 to 2017 • Finalise technology and demonstrate at 1000 households around SA • 500 units implemented in Capricorn District Municipality (Limpopo Province) and 500 units implemented in Bizana (Eastern Cape) • Outcomes: • Units have been in operation for periods ranging from 12 months to 26 months • > 95 % of units in Limpopo still in operation • > 95 % of users believe that there has been a major benefit from using the units • > 95 % would recommend further rollout of the units to other un-serviced households • some users claim observable health benefits, since using the units

  9. The VA-RWF: User Acceptance and Sustainability

  10. The VA-RWF: Economics … • VERY ATTRACTIVE when compared to alternate options, i.e. • Bottled water • Water kiosks

  11. The VA-RWF: SUMMARY • addresses a very important need in Sub-Saharan Africa, and other developing regions • produces a safe drinking water from raw waters contaminated with pathogens, without treatment chemicals or energy • extremely robust unit, easy to operate and clean • VERY HIGH user acceptability and perceived benefit • Economically very attractive • A VERY PROMISING OPTION FOR DRINKING WATER PROVISION TO RURAL HOUSEHOLDS …..

  12. Quo Vadis ???

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