Efficiency of chlorine
Active chlorine kills or inactivates 99.9% of the pathogenic microorganisms in water extremely reliably and prevents recontamination* when residual chlorine is left behind.
Chlorine is by far the most commonly used disinfectant in the world, according to the World Chlorine Council. Where it has been widely adopted, chlorine has helped eradicate waterborne diseases such as cholera, typhoid and dysentery. Chlorine also removes the myxobacteria, mould and algae that develop on the walls of water pipes and in cisterns and other water tanks.
It should be noted that although bacteriological contamination of water is responsible for the vast majority of waterborne diseases, active chlorine (as well as active chlorine produced using WATA™ devices) treats only the bacteriological contamination of water. Active chlorine does not remove the various sediments, elements, materials, etc. that make water cloudy. It also does not treat the chemical contamination of water (by heavy metals, arsenic, fluorine, etc.).
* (WHO, 2004, Water Treatment and Pathogen Control, IWA Publishing, pp. 44-50)
WATA™ devices enable the local production of a chlorinated derivative called sodium hypochlorite. Sodium hypochlorite is produced in 85 countries. Since the end of the 19th century to the present day, its production has increased from 35,000 tonnes to 44 million tonnes.
While some chlorinated derivatives for treating water are dangerous, sodium hypochlorite produced with WATA™ is less corrosive. Ingesting it is certainly unpleasant, but it is not dangerous. The chlorine solution produced with WATA™: 1 / is four times less concentrated in chlorine than bleach; 2 / has a lower pH than bleach, so it is more active and effective as a disinfectant.
Conservation and stabilization
Proper storage is necessary to ensure that the sodium hypochlorite solution that has been produced is stable over time. Active chlorine concentrate should be stored in non-metallic, opaque and firmly closed containers. Bottles must be kept away from light and in the coolest possible place. A high storage temperature decreases the stability of the solution, resulting in a loss of concentration and an accelerated decomposition of the active chlorine into chlorates. Note that chlorine will store better in a full container than in a half-empty container, where it will be oxidized by the air that is present.
In order to ensure that the sodium hypochlorite solution lasts longer, it is necessary to avoid the presence of metallic impurities in the raw materials (water and salt) used in the production.
Shelf life of the solution produced with WATA™
The sodium hypochlorite produced with WATA™ devices does not have a stable chlorine concentration over time. We recommend using the solution 24 hours after it has been produced.
If you want to keep your chlorine solution longer, it is necessary to stabilize it.
As such, WATALUX SA has developed a stabilization kit, it will be commercialize in 2019.