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DEMONSTRATION OF THE HIPOX ADVANCED OXIDATION TECHNOLOGY FOR THE TREATMENT OF MTBE-CONTAMINATED GROUNDWATER
Citation:
Speth*, T F. AND G. Swanson. DEMONSTRATION OF THE HIPOX ADVANCED OXIDATION TECHNOLOGY FOR THE TREATMENT OF MTBE-CONTAMINATED GROUNDWATER. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-02/094 (NTIS PB2003-103275).
Impact/Purpose:
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Description:
The HiPOx technology is an advanced oxidation process that incorporates high-precision delivery of ozone and hydrogen peroxide to chemically destroy organic contaminants with the promise of minimizing bromate formation. A MTBE-contaminated groundwater from the Ventura County Naval Base in Port Hueneme, CA was used to evaluate this technology. Due to extremely high concentrations of bromide in the feed water (1.3 mg/L) and the desire to limit bromate formation, an experimental system was operated with 630 ozone injector ports in series. In all trials, the HiPOx system reduced MTBE from 748 ug/L to below its regulatory limit of 5 ug/L; however, bromate was not maintained below its regulator limit of 10 ug/L. The oxidative intermediate tert-butyl alcohol (TBA) was below its regulatory effluent limit of 12 ug/L in two of the three trials. Therefore, the experimental HiPOx system was not fully successful with this atypical water at the chosen oxidant doses. A model calculation is presented that uses many simplifying assumptions to show that this HiPOx system may have been fully successful at this location under the chosen oxidant doses if the influent bromide concentration was 0.56 mg/L, or less.