Municipal Plant Uses Sodium Chlorate/Hydrogen Peroxide Precursor for Chlorine Dioxide Production
Successfully treats 150 MGD of potable water
PurDOX™ BCD was successfully used to treat the water supply at a large Southeastern municipal drinking water plant that supplies 150 million gallons per day. PurDOX™ BCD is a drop-in replacement for a single proprietary sodium chlorate/hydrogen peroxide precursor feed used to generate chlorine dioxide (ClO₂) in small-scale water treatment applications.
International Dioxcide Inc., (IDI), an ERCO Worldwide Company, has been actively offering PurDOX™ BCD into industrial and municipal applications with great success since 2018. IDI partnered with a highly skilled water service provider to assist with the trial.
PurDOX™ BCD generates ClO₂ using the following reaction chemistry:
2 NaClO₃ + H₂SO₄ + H₂O₂ 2 ClO₂ + Na₂SO₄ + 2 H₂O + O₂(g)
In this process, the sodium chlorate and hydrogen peroxide components are pre-mixed into a single precursor solution that is reacted with sulfuric acid to generate chlorine dioxide. While PurDOX™ brand equipment is available directly from IDI, any third-party equipment designed for the small-scale sodium chlorate/hydrogen peroxide process has demonstrated seamless transition when switching over to PurDOX™.
In addition to the generator equipment, the PurDOX™ technology in many instances can use the same storage tanks, day tanks, metering pumps, and feed lines as other similar commercial formulations comprised of an aqueous solution of 40wt.% NaClO₃ and 7-10wt.% hydrogen peroxide.