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The Naiade water disinfection unit is a spin-off from Nedap’s and Trojan’s know-how of large scale drinking water and industrial waste water treatment plants. The Naiade drinking water disinfection unit very effectively combines the potential offered by solar energy, UV light and battery back-up.
# a UV light, which kills any remaining bacteria and viruses
===Suitable conditions ===The unit has been designed for operation under harsh conditions in grass root societies. Units can be installed, operated and maintained by people with no or little/low technical education or background. {{procontable | proborder="1" cellpadding="5" cellspacing="0" align="none"|-! width="50%" style="background:#efefef;" | Advantages! style="background:#f0f8ff;" | Disadvantages|-| valign="top" | - Immediate use after installation <br>
- Supply for great number of people <br>
- High yield <br>
- Environmentally friendly <br>
- The use of a native speaking sales and distribution network <br>
| convalign="top" | - Dependent to solar energy, although battery system is standard <br>- Imported product; with possibility of local production based on annual turnover<br>|}} ==History and social context== ==Suitable conditions ==The unit has been designed for operation under harsh conditions in grass root societies. Units can be installed, operated and maintained by people with no or little/low technical education or background.
{{Potential_Treatment_Capacity_table
| not=
- Dissolved Chemicals (such as pesticides, fertilizers, arsenic etc.)* <br>
| process=Filtration + UV light treatment
| watcrit=Fresh water, not contaminated with dissolved chemicals.
}}
The Naiade can be installed in 30 minutes by local people without a
technical background. A step-by step, pictured instruction leaflet and tools are provided.
The capacity is about 3,500 liters per day, depending on the scale of organization.
The disinfected water fulfills the World Health Organization standards. Pathogen reduction rates up to 99,9999 99% are obtained in many applications. (More details are available on request). It is strongly recommended to use separate containers for the raw and disinfected water to avoid recontamination.
The unit can function at night using a car battery of not less than
A supervision structure to guarantee optimal use is highly recommended.
{{Treatment_Efficiency
|lab:bacteria=Up to 100%
|lab:viruses=>99.9999%
|lab:protozoa=>99.9%
|lab:helminths=Up to 100%
The UV lamp has a life of 10.000hrs or 3 years at 9 h/day continuous service. The filter needs to be replaced approximately every 12 months depending on TSS of influent/washing frequency. The back up battery (12V-50Ah) lasts 36 hours. Built-in electronics will register the used time of lamp and a light in front of the unit will indicate when the lamp needs to be replaced.
==Cost=Field experiences={{Treatment_Cost|CapCost=US$ 3,500 (Ex Works, unit price)|OpCost=US$ 0|ReplCost=US$ 95|5yCost=US$ 30 (estimated cost over 1 year)|litreCost=US$ <0.003 (based on daily production of 3,500 liters)}}Note: the capital costs exclude the costs for water sanitation awareness programs and maintenance training, local support for installation and maintenance, transport and fees and duties. ==Country experiences==Naiade projects have been realized in:
Afghanistan, India, Sri Lanka, Pakistan, Indonesia, China, Brazil, Surinam, Mexico, Colombia, Morocco, Senegal, Sudan, Mozambique, Madagascar, Burkina Faso, Ghana, Tanzania, Cameroon, Benin, Mali, Egypt, South Africa, Kenya, Nigeria.
===Manuals, videos and links===*[http://www.nedap-naiade.com www.nedap-naiade.com]==Movies==*[http://www.naiadenorthamerica.com www.naiadenorthamerica.com]*[https://filehostwww.nedapyoutube.com/index.phpwatch?q=321999ab3f0c61b2f285d0d1dfcd7024&actionv=0 A short film made by the French TV2 team about the effectiveness of the 9SxbNsPcsnA Youtube Movie Naiade in India]
===Company Information===
Company: Nedap NV <br>
Visitor address:<br>
P.O. Box 101<br>
7140 AC Groenlo<br>
==References=Acknowledgements===
*KIWA Evaluation report. Declaration of the performance of the Naiade, Nieuwegein, The Netherlands, January 2005
*IFFCO Declaration of performance, New Delhi, India, April 2008
*Test results Naiade, Chinese Centre for Disease Control, Beijing, China, May 2007
*Test results of the Naiade, Governement de Bamako, Bamako, Mali, April 2008
*Test results RAND Water South Africa, August 2013
*Test results SEPTA Mexico January 2015