Naïade mobile solar water purifier
Naïade is a solar-powered UV water disinfection and purification system
Naïade is a mobile stand alone water purifier built by Nedap. The system uses solar power to operate and disinfects water using ultraviolet (UV) technology, eliminating need for use of any chemicals. The unit can purify 3000 liters a day with a >99% kill rate of bacteria and viruses.
The product can be purchased through local resellers located in Angola, Burkina Faso, Congo, Côte d’Ivoire, Ghana, Kenya, Liberia, Madagascar, Mali, Morocco, Nigeria, Rwanda, South Africa, Togo, Brazil, Columbia, Ecuador, Haiti, Mexico, Peru, Suriname, China, Bangladesh, India, Indonesia, Japan, Sri Lanka, Vietnam, The Netherlands, Romania, Spain, Turkey, Afghanistan, Israel, Pakistan, USA, and Australia.
~3600 USD (€3000) Converted on June 16th 2021
The UV Waterworks Standard is a similar standalone disinfection unit.
Goal 6: Clean water and sanitation
Target users include children and adolescents in developing and rural areas.
This product is produced in the Netherlands.
As of 2021, approximately 1000 units have been distributed Interview with manufacturer
Primary water purification method
Manufacturer-specified water treatment rate, measured in liters per hour
Laboratory-evaluated log scale removal rate of bacteria
Laboratory-evaluated log scale removal rate of viruses
Laboratory-evaluated log scale removal rate of protozoa
Reduction levels of heavy metals and/or arsenic through this treatment system
Manufacturer-specified maximum level of inlet turbidity (NTU)
Range or value of outlet turbidity levels (NTU)
Is there safe water storage integrated into this product?
A Naïade unit consists of a solar panel, ultraviolet (UV) light, plastic body, a battery and several filters. The solar panel has a capacity of 75 W, and the UV light inside has a capacity of 20 W. The plastic body has a water storage capacity of 100 L, and the outside of the body has pictograms to depict how to use the unit. The water is cleaned through the use of mechanical filters and UV light. The UV light inactivates bacteria, viruses and worm eggs, while the mechanical filters clean impurities, removing particles both large and microscopic to make the water safe to drink.
Maintenance can be carried out by users and local technicians.
Replacement components include the filters, UV lamps, and batteries.
The product is designed to provide safe disinfection of water using smart UV disinfection technology, while being simple to install and maintain. The UV disinfection system is designed to have a >99% kill rate of bacteria, protozoa and viruses.
Testing performed by UNESCO-IHE determined 3 log removal of E.coli.
Testing performed by Marmara University (Turkey), Water Research Institute (Ghana), Ghana Standards Board (Ghana), Water Quality Labs (Tanzania), Ministre de l’energie, des mines et de l’eau (Mali), ATIRA (India), Rwanda Bureau of Standards, Chinese Center for Disease Control, KIWA and UNESCO-IHE (Netherlands).
Potential safety hazards arise from the use of UV lamps, as UV light damages the eyes. Safety guidelines for proper installation and maintenance should be followed.
Batteries can be added to the unit to store energy for operation at night.
Voigt, E., Jaeger, H., and Knorr, D., 2013, Comparison of Systems Available on the Market. Securing Safe Water Supplies, Securing Safe Water Supplies, Academic Press, pp. 41-74.
United Nations World Water Assessment Programme, 2006, Water, A Shared Responsibility, The United Nations World Water Development Report 2.
This paper presents general information on UV disinfection for remote areas using filtration units:
Chabi, K., Zeng, J., Guo, L., Li, X., Ye, C., and Yu, X., 2020, Small-scale drinking water treatment unit of filtration and UV disinfection for remote area. Water Supply. 20(6): 2106–2118.
This product has been evaluated for E.coli removal by UNESCO-IHE.
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