Chlorine Dioxide in Drinking Water
Chlorine Dioxide for Drinking Water Treatment
Drinking Water Chlorine Dioxide Systems
The biocidal capability of chlorine dioxide, especially at high pH values, is well documented and this coupled with its' oxidising capabilities makes it an ideal choice for the treatment of drinking water.
For drinking water treatment chlorine dioxide is used in both pre-oxidation and post-oxidation steps. Chlorine dioxide will remove naturally occurring organic compounds that may react with chlorine to produce trihalomethanes, a suspected carcinogen. It also aids in the oxidation of inorganic molecules such as manganese and iron and increases coagulation, thus improving water clarity.
In most circumstances chlorine dioxide is more effective as a disinfectant than chlorine against water borne pathogenic microbes such as viruses, bacteria and protozoa. This includes the cysts of Giardia and the oocysts of Cryptosporidia which can cause severe stomach infections. Due to its' action on biofilm chlorine dioxide will both remove and prevent re-growth of bacteria within the drinking water distribution network. This ensures that clean water leaving the source remains clean to the point of use.
Chlorine dioxide can be used at extremely low concentrations. Pre-oxidation levels will depend upon the amount of contamination within the incoming water but are typically between 0.5-2.0 ppm. Post oxidation concentrations are as low as 0.2-0.5 ppm to achieve excellent disinfection results. Chlorine dioxide is active as a biocide for at least 48 hours ensuring long term water hygiene.
Our chlorine dioxide systems can be tailored to suit your drinking water requirements. From simple disinfection of pre-treated water to complete water treatment systems for boreholes our systems will provide accurate and reliable dosing for many years.
