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H2o Engineering Inc. | Advanced Remediation Solutions

Frequently Asked Questions

Below are some of our most frequently asked questions.

Have a question about ozone cleaning or ozone oxidation technologies for in situ remediation applications? Please complete the form at the bottom of the page.

• What is ozone?

Ozone is one of the oxidants used for in situ chemical oxidation (ISCO). Compared to other treatment methods, ISCO offers two important advantages when used for the remediation of contaminated groundwater. First, it tends to minimize the amount of waste material produced. Second, treatment is often accomplished in a shorter period of time. The result? Cost savings from reduced materials and labor expenses.

• How is ozone gas formed?

Ozone gas is formed when oxygen molecules (O₂) are exposed to a controlled high voltage electrical field. As oxygen molecules pass through this field, a portion of them are split, creating a pair of O₁ atoms. Seeking molecular stability, these atoms recombine with other O₂molecules in the air stream to form ozone (O₃). More soluble in water than oxygen, ozone is a more powerful oxidizer than other ISCO compounds, which include Permanganate (NaK), Hydrogen Peroxide (H₂O₂) and Sodium Persulfate (NaSO4).

• What materials are compatible with ozone?

Stainless steel, Teflon, Kynar, Viton, and SCH 80 PVC at concentrations below 3% by weight in air. HDPE and natural rubbers should not be utilized with ozone.

• What is the typical treatment time with ozone?

Each system is sized based on site-specific conditions. The systems are not one size fits all. The total treatment time is dependent on the site-specific goals and characteristics and should be sized accordingly.

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