****!!!!**** "the reaction between the ferrous ion and chlorite is very fast (5–15 s) over a range of pH 6.5–8.0; in this condition a ferrous ion dose of 3.31 mg Fe/mg ClO2 completely reduced chlorite to chloride, producing minimal residual soluble iron. For pH higher than 8.0–8.5, chlorite removal is lower due to the natural transformation of the ferrou ions to ferric hydroxide. Within these pH values, chlorite can be removed completely with ferrous ion concentrations higher than the stoichiometric value. Moreover, the application of ferrous salts for chlorite removal during the coagulation process enhances the performance of the coagulation and flocculation treatment"

***!!!!*** {Includes table of pathogen effectiveness levels} "Chlorite is the major inorganic by-product of the reaction of chlorine dioxide in water. Usually, the amount of chlorite formed will be 40-60% of the amount of chlorine dioxide which has reacted. " "Chlorine dioxide systems: acid chlorite and electrochemical generators "Typical chlorite yield for an acid-chlorite generator varies between 65-68%. Overall conversion efficiency is much lower than this as much of the acid remains unreacted." "Chlorine Dioxide ClO2 will inactivate pathogenic micro-organisms at the same rate between pH 5 and 9. This makes it ideal for disinfection of potable water and process water where the pH is up around 8.0." "ClO2 is approximately 5 times more soluble than chlorine and 50 times more soluble than ozone." "Chlorine Dioxide Reaction with Inorganic Compounds--Ammonia Nitrogen... Iron... Manganese..." "Sulfur Compounds... Cyanide..." "Oil and Gas... frac water"