Project Overview

The West Weber Water ConservancyDistrict (WWWCD) is building a new drinking water treatment plant to address the needs of the area’s rapidly growing population. The influent source has high amounts of organic taste and odor causing compounds, specifically MIB and geosmin, that will be treated using ozone gas injection.

How Ozone Works

Ozone is made up of three oxygen atoms and reacts with the water to form hydroxide radicals. The hydroxide radicals neutralize the MIB and geosmin compounds.

O₃ + H₂O → OH^- + O₂

Final Design

The basin contains two single-path serpentine channels each capable of handling 12.3 million gallons per day (MGD). Ozone gas is generated at an average rate of 2.9 kg/hr by twoOXW-4k ozone generators. Four ceramic diffusers inject microbubbles into the flow. Excess ozone gas is collected and destroyed by two CDA-500 ozone destroyers integrated into the reinforced concrete lid covering the basin. The basin is constructed with concrete reinforced by no. 4 and no. 5 rebar. The total estimated cost of construction is $1.7 – 1.9 million.

Alternatives

Selected alternatives are bolded

Flow Path Alternatives

• Single Flow Path
• Split Flow Path

Baffle Orientation

• Vertical
• Horizontal

Infusion points

• Single point infusion
• Multiple point infusion

Bubble sizes

• Macrobubbles (> 600 μm)
• Microbubbles (0.5 μm – 10 μm)
• Nanobubbles (0.007 – 0.02 μm)

Acknowledgments

Parry Osborn PE, Dr. Yiming Su, and Prof. Austin Ball