Not only for groundwater remediation, ozone can also be used for soil remediation. The process of ozone soil remediation is utilized for the purpose of eliminating soil contamination resulting from a variety of pollutants such as petroleum hydrocarbons, solvents, and pesticides. This technique entails the injection of ozone gas into the affected soil, which ultimately oxidizes and decomposes the harmful contaminants.
Due to its strong oxidizing properties, ozone is capable of rapidly breaking down contaminants into less hazardous compounds. This makes ozone soil remediation an attractive option for soil decontamination as it is both cost-effective and eco-friendly when compared to other remediation methods. Consequently, it has proven to be successful in numerous polluted locations across the globe.
Why Ozone is Chosen for Soil Remediation
In recent times, ozone has emerged as a viable option for eliminating a broad range of soil contaminants in polluted sites. Ozone treatment effectively targets both biodegradable substances that degrade at a sluggish pace and non-biodegradable compounds. Although many hydrocarbon contaminants can be biodegraded when dissolved, their attachment to soil particles impedes their degradation.
Moreover, the presence of an intricate network of water pipes and utility lines throughout a site makes excavation an impractical option. On the other hand, ozone treatment is straightforward to implement and does not necessitate extensive soil displacement. Remarkably, ozone soil remediation has demonstrated a reduction of contaminants by up to 99%, underscoring its effectiveness.
What can be Destroyed by Ozone
- Ozone soil remediation can address various types of contaminants, including:
- BTEX (benzene, toluene, ethylbenzene and xylene)
- Chlorinated solvents
- Petroleum hydrocarbons
- Solvents (TCE, MTBE, etc.)
Benefits of Ozone Used for Soil Remediation
- Apart from featuring minimal equipment expenses, the implementation of ozone also incurs low operating costs.
- The installation process will result in negligible disruption to the site.
- Ozone provides in-situ destruction of specific components.
- Ozone treatment leads to a swift reduction in the mass and concentration of contaminants in soil and water. Remarkably, noticeable outcomes can be achieved in a matter of weeks.
- Ozone treatment results in a clean reaction and produce no hazardous by-products.
- Microbubbles are employed to eliminate VOCs from soil pores and groundwater, thereby reducing the oxidative burden on soil that is commonly associated with liquid oxidants.
How is Ozone Soil Remediation Applied
- Site Assessment: A complete evaluation of the site is carried out to determine the kinds of contaminants existing in the soil and their concentrations. The information gathered from this assessment is utilized to determine the appropriate ozone injection rate and duration necessary for the soil remediation process.
- Soil Preparation: Prior to ozone injection, the soil is prepared by drilling boreholes or inserting pipes into it. Subsequently, ozone is introduced into the soil through these apertures.
- Ozone Injection: Ozone gas is introduced into the soil via specialized equipment that employs high-pressure pumps to deliver the gas. As a result of the ozone gas injection, the contaminants undergo oxidation and decomposition into less harmful substances.
Following the completion of ozone injection, post-treatment validation is performed to verify that the contaminants have been remediated to satisfactory levels.
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