Can chorine dioxide prevent bromate formation in water plants using ozone?
Yes. Water plants using ozone can form bromates when the source water has bromide. At Ozone plants in Contra Costa California and El Paso Texas, chlorine dioxide doses of 1.0 mg/L to 1.5 mg/L reduced bromate formation from 50% to 78%. Also, at the Contra Costa Plant, it was demonstrated that 1.0 mg/L chlorine dioxide dose was superior to ammonia addition in reducing the bromates. For more information about the El Paso Study contact Dr. Doug Rittmann at drrittmann@elp.rr.com. 2. Can chlorine and quicklime be added in the same compartment and be dosed into a sedimentation tank by a dosing pump for the purification of water? When chlorine is added with quicklime in the same compartment, the effectiveness of chlorine as a disinfectant is rendered practically useless. The effectiveness of chlorine as a disinfectant depends greatly on the pH level of the water. As the pH increases, there is less hypochlorous acid formed from the chlorine addition thereby making it less effective as a disinfe
