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! 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>
- State-of-the-art UV technology <br>
- Robust technology <br>
- Use of re-usable materials<br>
- Independent of fossil fuel or electrical network <br>
- Alternative to liquid chlorine disinfection <br>
- Environmentally friendly <br>
- The use of a native speaking sales and distribution network <br>
| valign="top" | - Dependent to solar energy, although battery system is standard <br>
- Imported product; with possibility of local production based on annual turnover <br>
|}
{{Potential_Treatment_Capacity_table
- Taste <br>
- Odor <br>
- Color<br>
| not=
- Dissolved Chemicals (such as pesticides, fertilizers, arsenic etc.)*<br>| process=Filtration + UV lighttreatment| watcrit=Sweet Fresh water, not contaminated with dissolved chemicals.
}}
==How Does It Remove Contamination?=Operations and maintenance===The purification of the Naiade are[[Image:naiade3.jpg|thumb|right|200px| Adding source water]] # a sieve to remove larger parts such as leaves, stones etc[[Image:naiade4.# jpg|thumb|right|200px| Protected unit in a 25 micron filter bagcage]]# a 10 micron filter bag # a UV light, which kills any remaining bacteria and viruses[[Image:naiade2.jpg|thumb|right|200px| The Naiade water purification unit.]]
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
====Treatment Efficiency====
{{Treatment_Efficiency
|lab:bacteria=Up to 100%
|lab:viruses=>99.9%
|lab:protozoa=>99.9%
|lab:helminths=Up to 100%
|lab:turbidity=Not available
|lab:iron=-
|field:bacteria=Up to 100%
|field:viruses=Not available
|field:protozoa=Not available
|field:helminths=Up to 100%
|field:turbidity=Strong reduction, only optically indicated
|field:iron=-
|extra_field=-
|lab:extra=
|field:extra=
}}
Based on UV light treatment experience using similar lamp systems, inserted in other Naiade units with different flow speeds, it can be safely assumed that there are no differences between the results obtained in the field and laboratories.
====Maintenance requirements====
Both filter bags can be removed from the unit for cleaning purposes. After careful flushing these bags can be replaced. The life span of the UV lamp is 10,000 operating hours, nearly 3 years. The UV lamp can be replaced within half an hour by the users themselves.
The UV lamp is a standard industrial UV lamp.
==Movies==Manufacturing====The unit does not contain any moving parts except for the electro-magnetic tap. It is made of tropical resistant poly ethylene. All material as well as the applied technology is based on the intensive use in remote and tropical areas. *[https://filehostThe device was laboratory test from Unesco-IHE, Institute for Water Education.nedapField tests were done by the Water Research Institute of the Council for Scientific and Industrial Research, Ghana and ATIRA-Ahmedabad, India.com/indexAmongst others, received two prestigious international awards on sustainable development.php?q ====Estimated Lifespan===321999ab3f0c61b2f285d0d1dfcd7024&action=0 A short film made by The estimated lifespan of the French TV2 team about unit is over 10 years. Filter bags and UV lamps may need earlier replacement. 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 effectiveness used time of lamp and a light in front of the unit will indicate when the lamp needs to be replaced. ===Field 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]
*[http://www.naiadenorthamerica.com www.naiadenorthamerica.com]
*[https://www.youtube.com/watch?v=9SxbNsPcsnA Youtube Movie Naiade in India]
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