Ozone for Groundwater & Soil Remediation

Overview
As the search for the ideal groundwater treatment technology continues, more companies are discovering the benefits of ozone. Since the early 1990's, ozone has been used for hundreds of successful in-situ chemical oxidation (ISCO) projects.

Low cost and speed of reaction are the two main advantages leading many to pursue ISCO. Ozone can be used as a primary treatment or final polishing method, and is effective for remediation of groundater, saturated soil and vadose zone contaminants.

Ozone is delivered via horizontal or vertical wells and oxidizes organic contaminants in two ways: direct oxidation, or generation of free radical intermediates. Ozone itself oxidizes compounds such as aromatics and chlorinated alkenes. Hydroxyl radicals attack organic contaminants and break down their carbon-carbon bonds.

For maximized effectiveness, ozone requires closely spaced delivery or injection points. A general rule of thumb for

well spacing is approximately a radius of influence 20’ in diameter.

As awareness of ozonation as a viable treatment alternative for soil and groundwater remediation increases, few suppliers and manufacturers are capable of providing expert design aassistance and technical support necessary for a safe and effective ozone treatment project. As an ozone system integrator, Piper Environmental Group will evaluate your project needs to determine the best ozone system for your specific application.

Ozone Advantages

• Moves easily through soil
• 12 times more soluble than oxygen in water
• Oxidation by ozone is rapid
• Complex organics break down to carbon dioxide or less persistent/less toxic molecules
• Decomposition leads to oxygenation and biostimulation (for aerobically degradable compounds)
• Ozone is produced on site from just air and electricity, eliminating the need for hazardous chemical transportation and storage
  

Capabilities & Applications

• BTEX
• MTBE
• Aliphatic Hydrocarbons
• Polyaromatic (PAH) Hydrocarbons
• Heavy Hydrocarbons
• Diesel Fuel
• Chlorinated Solvents
• Pesticides
• VOCs