Faq

At present in India, ClO2 is used principally as a primary disinfectant for surface waters with odor and taste problems. It is an effective biocide at concentrations as low as 0.1 ppm and over a wide pH range. ClO2 penetrates the bacteria cell wall and reacts with vital amino acids in the cytoplasm of the cell to kill the organism. The by-product of this reaction is chlorite. Of importance is that toxicological studies have shown that ClO2’s disinfection by-product, chlorite, poses no significant adverse risk to human health.

Chlorine dioxide is environmentally friendly and in fact is a pollution protection technology that protects the environment and human health from bacteria and by-products formed from other disinfection methods. For example, in the pulp and paper industry the use of ClO2 has virtually eliminated dioxin in mill waste water and has led to a significant improvement in the aquatic eco-system.

It should first be noted that both chlorine and chlorine dioxide are powerful and effective disinfectant agents. Chlorine has been and continues to be a very effective disinfectant which is responsible for making and keeping drinking water safe for people around the world. In the instances in which the drinking water source is surface water, which contains organic materials, ClO2 offers the following benefits. First, ClO2 functions via an oxidative rather than chlorinating reaction. This virtually eliminates the formation of chlorinated organic compounds which are suspected to increase cancer risk. Second, ClO2 is generated on site, thereby eliminating the need for site storage of chlorine and/or transportation thereof

Pure chlorine dioxide cannot be purchased in solid, liquid or gaseous form. In fact, because ClO2 is such a highly effective and reactive chemical, transportation of ClO2 is not permitted. Chlorine dioxide must be produced and used at the point of application. Chlorine dioxide generators are automated and user friendly.

The cost of chlorine dioxide is dependent on the cost of the precursor chemicals-sodium chlorite or sodium chlorate-and the chemicals required to convert these chemicals into ClO2. The cost of ClO2 will also depend on the generation method employed. When compared to the cost of chlorine, the cost of ClO2 is higher. However in those instances in which chlorine is not the preferred regulatory or environmental alternative, ClO2 is a very attractive alternative. The capital equipment costs of generating ClO2 are also far less than that of other alternatives like ozone which can also be used for water treatment.

Solutions of approximately 1% ClO2 (10 g/L) may safely be stored at 5℃ for several months, with little change in concentration, provided that the solution has no gas space and is protected from light