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{{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.
}}
===Operations and maintenance===[[Image:naiade3.jpg|thumb|right|200px| Adding source water]][[Image:naiade4.jpg|thumb|right|200px| Protected unit in a cage]][[Image:naiade2.jpg|thumb|right|200px| The Naiade has been designed to remove bacteria, protozoa, viruses and colloidal parts from raw sweet waterpurification unit. It operates without the use of fossil fuel or 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
==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. ==Maintenance requirements=Treatment Efficiency=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 cleaning procedure should be as follows:* Daily cleaning the PV panel for optimal energy supply* Regular rinsing or washing of the filter bags to avoid blockage by sediments or a micro biological layer* Regular cleaning of the glass tube of the UV lamp to avoid sedimentation. This highly depends on the chemical consistency/content of the raw water. A colored LED indicates the status. After 8,000 hours of use the unit starts giving warning for necessary replacement of the UV lamp, although the users still have 2,000 hours of use to exchange the UV lamp. After 10,000 hours the unit will not supply any water until the old UV lamp has been replaced.Replacement of the UV lamp can be done on the spot by just undoing four screws.The UV lamp is a standard industrial UV lamp. ==Treatment efficiency==
{{Treatment_Efficiency
|lab:bacteria=Up to 100%
|lab:viruses=>99.9999%
|lab:protozoa=>99.9%
|lab:helminths=Up to 100%
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.
==Cost==Maintenance====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 cleaning procedure should be as follows:* Daily cleaning the PV panel for optimal energy supply* Regular rinsing or washing of the filter bags to avoid blockage by sediments or a micro biological layer* Regular cleaning of the glass tube of the UV lamp to avoid sedimentation. This highly depends on the chemical consistency/content of the raw water.{{Treatment_Cost|CapCost=US$ 3A colored LED indicates the status. After 8,000 hours of use the unit starts giving warning for necessary replacement of the UV lamp, although the users still have 2,500 (Ex Works000 hours of use to exchange the UV lamp. After 10, 000 hours the unit price)will not supply any water until the old UV lamp has been replaced.Replacement of the UV lamp can be done on the spot by just undoing four screws.The UV lamp is a standard industrial UV lamp. |OpCost=US$ 0===Manufacturing====|ReplCost=US$ 95The unit does not contain any moving parts except for the electro-magnetic tap.|5yCost=US$ 30 (estimated cost over 1 year)|litreCost=US$ <0It is made of tropical resistant poly ethylene.003 (All material as well as the applied technology is based on daily production of 3the intensive use in remote and tropical areas. The device was laboratory test from Unesco-IHE,500 liters)Institute for Water Education. }}Note: Field tests were done by the capital costs exclude Water Research Institute of the costs Council for water sanitation awareness programs Scientific and maintenance trainingIndustrial Research, local support for installation Ghana and maintenanceATIRA-Ahmedabad, transport India.Amongst others, received two prestigious international awards on sustainable development. ====Estimated Lifespan====The estimated lifespan of the unit is over 10 years. Filter bags and fees 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 used time of lamp and dutiesa light in front of the unit will indicate when the lamp needs to be replaced. ===Field experiences===Naiade projects have been realized in:
==Movies=Manuals, videos and links===*[httpshttp://filehostwww.nedap-naiade.com www.nedap-naiade.com]*[http:/index/www.phpnaiadenorthamerica.com www.naiadenorthamerica.com]*[https://www.youtube.com/watch?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: 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