Peroxide Ozone Advanced Oxidation (Peroxone)
In an H2O2/O3 system, H2O2 is used in conjunction with O3 to enhance the formation of hydroxyl radicals via the
following reaction:
H2O2 + H2O → HO2- + H3O+
O3 + HO2- → •OH + O2- + O2
The process, sometimes referred to as peroxone, employs the following equipment: H202 storage and injection system,
O3 generator and injection system, contactor and mixing tanks, ozone off gas destruct unit, supply and discharge pumps,
and monitoring and control systems.
Ozone is dosed at a ratio of 1 to 2 mg/L ozone per mg/L DOC (dissolved organic carbon); however, higher dosages are
recommended for source waters with high alkalinity (>100 mg/L as CaCO3) or NOM. H2O2 is fed from an aqueous
solution, at peroxide to ozone ratios ranging from 0.3:1 to 3:1. The specific ratio will be a function of disinfection
requirements, bromide concentration, contaminant concentration, and other water quality parameters.
The combined H2O2/O3 process has been demonstrated to be more effective at removing natural and synthetic organics
than O3 or H2O2 alone. In addition, using a combination of O3 and H2O2 to produce hydroxyl radicals, rather than just
O3, allows a lower dosage of O3 to be used.
The theoretical yield of hydroxyl radicals via H2O2/O3 technology is less than that of the H2O2/UV technology; however,
the yield is less affected by water quality (i.e., turbidity, iron, and nitrates lower the yield for UV processes but not
H2O2/O3 processes).
H2O2/O3 systems have been extensively tested and applied in remediation applications for groundwaters. Thus, the
implementation of H2O2/O3 systems has a field-proven history of operation and regulatory acceptance.
H2O2/O3 systems have been well studied at the bench-, pilot-, and field-scale levels for the removal of organic
contaminants such as BTEX, TCE, and PCE. There are currently a number of full-scale H2O2/O3 systems in use for
MTBE remediation. The chemistry behind H2O2/O3 systems is well understood; however, as with all AOPs, pilot-scale
demonstration are generally needed before full scale installation can be designed.
In an H2O2/O3 system, H2O2 is used in conjunction with O3 to enhance the formation of hydroxyl radicals via the
following reaction:
H2O2 + H2O → HO2- + H3O+
O3 + HO2- → •OH + O2- + O2
The process, sometimes referred to as peroxone, employs the following equipment: H202 storage and injection system,
O3 generator and injection system, contactor and mixing tanks, ozone off gas destruct unit, supply and discharge pumps,
and monitoring and control systems.
Ozone is dosed at a ratio of 1 to 2 mg/L ozone per mg/L DOC (dissolved organic carbon); however, higher dosages are
recommended for source waters with high alkalinity (>100 mg/L as CaCO3) or NOM. H2O2 is fed from an aqueous
solution, at peroxide to ozone ratios ranging from 0.3:1 to 3:1. The specific ratio will be a function of disinfection
requirements, bromide concentration, contaminant concentration, and other water quality parameters.
The combined H2O2/O3 process has been demonstrated to be more effective at removing natural and synthetic organics
than O3 or H2O2 alone. In addition, using a combination of O3 and H2O2 to produce hydroxyl radicals, rather than just
O3, allows a lower dosage of O3 to be used.
The theoretical yield of hydroxyl radicals via H2O2/O3 technology is less than that of the H2O2/UV technology; however,
the yield is less affected by water quality (i.e., turbidity, iron, and nitrates lower the yield for UV processes but not
H2O2/O3 processes).
H2O2/O3 systems have been extensively tested and applied in remediation applications for groundwaters. Thus, the
implementation of H2O2/O3 systems has a field-proven history of operation and regulatory acceptance.
H2O2/O3 systems have been well studied at the bench-, pilot-, and field-scale levels for the removal of organic
contaminants such as BTEX, TCE, and PCE. There are currently a number of full-scale H2O2/O3 systems in use for
MTBE remediation. The chemistry behind H2O2/O3 systems is well understood; however, as with all AOPs, pilot-scale
demonstration are generally needed before full scale installation can be designed.
Spartan Environmental Technologies
Air and Water Treatment
Air and Water Treatment
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Spartan Environmental
Technologies, L.L.C.
7383 Lauren J Dr
Mentor, OH 44060
USA
Phone: 800-492-1252
Fax: 440-368-3569
E-mail: info@
spartanwatertreatment.com
Technologies, L.L.C.
7383 Lauren J Dr
Mentor, OH 44060
USA
Phone: 800-492-1252
Fax: 440-368-3569
E-mail: info@
spartanwatertreatment.com