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Siphon filter

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{{Language-box|english_link= Siphon filter | french_link= Coming soon | spanish_link= Coming soon | hindi_link= Coming soon | malayalam_link= Coming soon | tamil_link= Coming soon | swahili_link=coming soon | korean_link= Coming soon | chinese_link=虹吸净水器 | indonesian_link= Coming soon | japanese_link= Coming soon }} [[Image:siphon.png|right|100px80px]][[Image:siphon2siphon_reg.pngjpg|thumb|right|250px200px| Siphon filter as sold in shops]] The Siphon filter is a candle-type water filter which uses siphon pressure to force water through a high-quality ceramic filter element. The innovative useage usage of the siphon results in a high flow rate of 4-6 liters per hour. The Siphon filter is very compact, as only a filter element, a plastic hose, and a valve are needed, while existing storage containers can be used. A washable fabric is used as a pre-filter before the water enters the ceramic element. Therefore, protecting the ceramic filter from premature clogging when using turbid water.

The filter is designed as a point-of-use filter in households. The filter element is impregnated with silver in order to increase the efficiency of the filter.

===Suitable conditions===

{| border="1" cellpadding="5" cellspacing="0" align="center"

|-

! width="50%" style="background:#efefef;" | Advantages

! style="background:#ffdeadf0f8ff;" | Disadvantages

|-

| valign="top" | - Easy to use: after 15-20 litres, the upper container has to be refilled<br>

- It is user friendly, easy to maintain and lasts longer than other ceramic filters<br>

- It has a very low production cost and a very low cost for the users<br>

- Due to the activated carbon filtered water tastes and smells good <br>

- High flow rate

| valign="top" | - Clogging if water contains fine silts<br>

| watcrit= Contaminated fresh water

}}

[[Image:siphon2.png|thumb|right|200px| Another version of the siphon filter]]===Construction, operations and maintenance===[[Image:siphon3.png|thumb|right|250px200px| Siphon filter demonstration in Mozambique]][[Image:siphon1.jpgpng|thumb|right|250px200px| Principle of a siphon filter]]

====Operation====

====Manufacturing====

The Siphon filter was developed and is now produced by Basic Water Needs India, a company based in Pondicerrythe Netherlands, with a factory in Pondicherry, India. The ceramic filter is quite fragile, the plastic is robust. PresentlyBefore 2011, leakage problems are were solved by gluing the candle caps under strict quality control, however newer models do not have this leakage problem. Plastic bulbs are made in one piece from EVA (material used in hospitals for plastic hoses).

It is not possible to produce the filter locally due to a lack of quality control and unavailability of raw materialsor sometimes only the initial investments needed for this. It might be is possible however, to produce some import the filter elements and assemble these into local plastic parts. This is always done in cooperation with and under the quality control of Basic Water Needs. Local production will be applicable if there’s existing industrial infrastructure. Other products made with the ceramic filter element is the Tulip Table Top water filter and Tulip Group filter.

====Treatment Efficiency====

The Siphon filter has been tested using a certified method by “Waterlaboratorium Noord”, an independent laboratory based in the Netherlands. It was found that even after passing 7000 liters of heaviliy heavily contaminated water, the filter still removed E. Coli by more than 99.99%. The E. Coli test is used as an indicator for the removal of pathogenic bacteria in water. Water-borne bacteria are responsible for the large majority of diseases caused by contaminated water.

====Maintenance====

The plastic parts last up to 5 years.

===Costs===

{{Treatment_Cost2

|CapCost= € 7 - 9

|ReplCost= € 2/year

|5yCost=

|m3Cost= € $ 2 – 5 first year$0, 48-071 – 1, 5414 years after

}}

Figures are assuming filter replacement takes place every year but plastic parts last up to 5 years.

===Field experiences===It is now being implemented in Ethiopia, Malawi, India, Indonesia, Tanzania, Mozambique, Madagascar, Kenya , Ecuador, Peru, Guatemala, Ghana and IndiaBangladesh... ===Manuals, videos, and links==* [http://www.youtube.com/watch?v=j261j90JKZw Youtube movie on the siphon filter]* [http://www.youtube.com/watch?v=d8bIyjFEbes Youtube movie on the Tulip filter]* [http://www.youtube.com/watch?v=NSSeHXymkBw CrystalPur advertisement on Cambodian television]

* [[Solution_of_the_week_6|Akvo solution of the week 6]]

* [http://www.basicwaterneeds.com/wp-content/uploads/2013/11/User-manual-Siphon-water-filter.pdf Tulip Siphon Water Filter Instruction manual]

 

====Videos====

* '''Video #1''': The siphon filter is a new effective and low cost water filter that eliminates turbidity and 99.99% of the bacteria. Henk Holtslag explains how it works. For more information, go to [http://www.connectinternational.nl/english/home Foundation Connect International Foundation Connect International].

* '''Video #2''': The Tulip Siphon filter. A new low cost water filter that eliminates turbidity and all bacteria. Filter capacity: 100 liters per day. Lifetime: 7000 liters. Retail price: 8 to 12 US$. More information at [http://www.connectinternational.nl/english/home Foundation Connect International].

* '''Video #3''': CrystalPur advertisement on Cambodian television.

 

{|style="font-size: 125%"

|-

|{{#ev:youtube|j261j90JKZw|200|auto|<center>Siphon filter - <br>How it works</center>}}

|{{#ev:youtube|d8bIyjFEbes|200|auto|<center>Siphon filter 1</center>}}

|{{#ev:youtube|NSSeHXymkBw|200|auto|<center>CrystalPur advertisement <br>on Cambodian television</center>}}

|}

===Acknowledgements===* [https://www.diageogivingforgood.com/how_filters_work.aspx information on The CrystalPur filter]. World Health Works (WHW), a spin-off of EnterpriseWorks/VITA, makes the CrystalPur filter], which was introduced in response to the need for low-cost domestic water filters in developing countries.* Safe Water Today[http: Supporting Global //www.basicwaterneeds.com/ Basic Water Projects Needs], Waterbedrijf Groningen - invested in the development of the filter.* [http://www.safewatertodayaquaforall.orgnl/Aqua for All]- invested in the development of the filter.

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