CHLORINATION

The ultimate stage of water treatment is disinfection. It consist in the destruction of pathogen microorganisms present in water, to make it drinkable according to human consumption standards. Contrary to UV or ozone treatment, chlorination has a double effect:

• Disinfection effect during the injection.
• Remanent effect to guard water against subsequent contamination during storage.

Injected chlorine will initially react with easily oxydable elements (Iron...) and then with organic matter to form mono, di and trichloramine which will be eliminated afterwards. Then the chlorine injected after this point (break point) will be active free chlorine which means remanent chlorine. The WHO Standards are recommending a final active free Chlorine amount of 0,5 mg/l. 

LMS France mainly use NaDCC Chlorine (Sodium Dichloroisocyanurate) in granules for disinfection. Granules are dissolved in a container to form a basic solution. Thanks to a proportional dosing pump, which do not require any electrical feeding, the solution is injected in the water to be treated.