24
edits
Changes
m
no edit summary
=====Operation=====
[[Image:WATA Instructions.png|thumb|200px|Instructions to create the salt water solution to be transformed into sodium hypochlorite. Taken from the [https://www.antenna.ch/en/activities/water-hygiene/operating-instructions-wata/ WATA<sup>™</sup> manual]]]
The device should only be used by adults. The user guide should be carefully read before use. The chlorination however should be supervised by a qualified person.
Once the salt solution is ready, the WATA<sup>™</sup> device should be totally immersed in the solution. Connect the WATA<sup>™</sup> device to the power supply and turn on the machine. The amount of time it takes to The power supply of the WATA<sup>™</sup> device (of 110V or 220V) is plugged in. The device works on 12 V direct current. It can be plugged directly into a car battery, car battery charger or solar panel. A grid or diesel generator delivering alternating current can also be used with the provided transformer.
Active chlorine is very sensitive to light and degrades relatively quickly if not stabilized for long term storage. The stabilization process involves raising the pH of the chlorine solution and will allow it to be stored up to 6 3 months. It can be achieved with the WataStab <sup>™</sup> reagent kit. If not stabilizing the solution should be used with 24 hours if disinfecting drinking water. It can be stored for longer if destined for cleaning purposes, although the concentration will deteriorate over time and it should be measured before use to ensure an adequate level of disinfection.
====Use for Water Disinfection====
====Other Applications====
The chlorine concentrate is suitable for various applications apart from disinfecting water (chlorine refers to sodium hypochlorite at 6 5 grams of active chlorine per liter): *Dakin’s solution for disinfecting wounds: No dilution (use full concentration of active chlorine at 6 5 grams per liter)
*To clean floors, bathrooms or latrines: 1 part chlorine is diluted with 2 parts water. It needs 5 minutes to react, after which it is rinsed with drinking water.
*To wash hands: 1 part chlorine is diluted with 11 parts water. It needs 5 minutes to react, after which the food should be rinsed with drinking water.
====Maintenance====
Devices need to be rinsed after each procedure with clean water. If after several uses you notice white marks on the WATA<sup>™</sup>, prepare a mixture of 50% vinegar (or lemon juice) and 50% clean water. For the Mini-WATA<sup>™</sup> and WATA-Standard<sup>™</sup>, leave the device to soak for several hours (overnight for example) and then rinse it with clear water. Never scrub the titanium plates. WATA-Plus<sup>™</sup>, Midi-WATA<sup>™</sup> and Maxi-WATA<sup>™</sup> need to be soaked for at least 24 hours and be completely immersed in 6-10 liters of the same vinegar & clean water mixture.
====Estimated Lifespan====
====Costs====
Visit the Antenna Watatechnology.com webshop for the pricing of the WATA<sup>™</sup> range of devices: [https://antenna.odoowatatechnology.com/shopen/order/]
====Field Experiences====
====Further Reading====
* WATA<sup>™</sup> devices and reagents tutorial videos : [https://www.youtube.com/playlist?list=PLLCDBpdIkWj1W4UtNrMnV5Eiblhl1eslm]
* Short video on the WATA<sup>™</sup> device produced by Antenna Foundation for World Water Day 2017: [https://www.youtube.com/watch?v=nNTr8wJqooM]
* Antenna Foundation’s Water & Hygiene department: [https://www.antenna.ch/en/water-hygiene/]
* Frequently Asked Questions (FAQ) about the WATA<sup>™</sup> range of devices: [https://www.antenna.ch/wp-content/uploads/2017/03/FAQ_10.2017_eng-1.pdf]
