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Soil Remediation - Different Methods to Restore Soil

February 21st, 2020 by admin

A road in the foreground with a beautiful country landscape in the background

Soil becomes contaminated due to the presence of human-made chemicals. It can often be caused by industrial activity, agricultural chemicals, or improper disposal of waste products. The most common culprits are petroleum hydrocarbons, pesticides, and heavy metals. Soil contamination poses a severe problem for human, animal, and environmental health. At Spectrum Environmental Services, we understand the importance of healthy soil and the environment. There are a few different methods to decontaminate soil.

Thermal Soil Remediation

Thermal soil remediation is a technique that subjects soil to high temperatures. It is typically used for soil that has been contaminated by tainted water or hydrocarbon compounds such as oil or gasoline.

The soil is run through an oven, which causes the contaminants to evaporate. The evaporated material is captured and cooled for proper disposal. The soil, once cooled, can be further tested, and then prepared for recycling.

Air Sparging

Air Sparging is a technique that is used when the soil has been contaminated by toxic vapors or gases. This technique is accomplished by injecting large volumes of pressurized air into the soil to remove the volatile compounds. Rather than excavating the soil first, this method is applied directly to the contaminated site. Air Sparging is one of the more common ways of in-place soil remediation.

Bioremediation

Bioremediation is a technique that uses a biological mechanism for filtering and removing contaminants. The soil is treated by applying aerobic (with oxygen) and anaerobic (without oxygen) bacteria that feed on the specific contaminant that is infecting the site. This bacteria will consume the pollutants in the soil and die off once all the toxic substances are gone.

The only issue with this method is that it requires stable conditions. The soil needs to be about 70 degrees F, and no heavy rains can occur. Covering and insulating the soil can help, but it will take longer to complete.

There are many methods and techniques for soil remediation. If you suspect your soil is contaminated, contact Spectrum Environmental Services. We have the knowledge and expertise to ensure the soil is removed and appropriately decontaminated.

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