COD/BOD Removal with the GasTran Ozone Injection System

The table below shows selected results of tests using the GasTran ozone injection system to treat wastewater for the
reduction of COD/BOD. It should be noted that not all BOD/COD is amenable to treatment with ozone. Some specifies
are completely unaffected by ozone and others are converted to more biodegradable compounds which can actually
increase BOD. As shown below, in cases where ozone is effective, the GasTran system has shown very high COD
removed/Ozone transferred ratios.

Low COD

Medium COD

High COD

Starting COD = 623 mg/L

Starting COD = 6485 mg/L

Starting COD = 15964 mg/L

Starting BOD = 334 mg/L

Starting BOD = N/A

Ozone Dose = 26.4 ppm

Ozone Dose = 14.7 ppm

Ozone Dose = 50.6 ppm

Transfer Efficiency = 86 %

Transfer Efficiency = 100 %

System Pressure = 0 psig

Ozone Concentration = 4.5 wt %

Ozone Concentration = 3.0 wt %

G/L Ratio = 0.44

G/L Ratio = 0.45

G/L Ratio = 1.31

Outlet COD = 497 mg/L

Outlet COD = 5901 mg/L

Outlet COD = 12610 mg/L

Outlet BOD = 232 mg/L

Outlet BOD = N/A

4.5 mg/L BOD removed per mg/l ozone transferred

BOD NA

4.7 mg/L COD destroyed per mg/l ozone transferred

39.7 mg/L COD destroyed per mg/l ozone transferred

66.3 mg/L COD destroyed per mg/l ozone transferred

Spartan Environmental Technologies
Air and Water Treatment

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

COD Removal with GasTran Ozone Injection System