How do you remediate contaminated soil?
Traditionally, there are three main soil remediation technologies: soil washing, bioremediation and thermal desorption. Soil washing is a process that uses surfactants and water to remove contaminants from the soil.
How much does it cost to decontaminate soil?
Blending contaminated soil with clean soil can cost up to $15,000, while treating soil with innovative treatment technologies can range from $50,000 to $100,000 per acre-foot. Remediating soil isn’t necessarily easy or cheap, but remediated soil prevents long-term, detrimental effects on our ecosystem.
How long does it take to remediate contaminated soil?
Excavating contaminated soil from a commercial property site can take as little as one day or as long as several months or more, depending on various factors.
What are the remediation methods?
Physical remediation techniques include soil washing, vitrification, encap- sulation of contaminated areas by impermeable vertical and horizontal lay- ers, electrokinesis, and permeable barrier systems. Soil washing is a technique widely used for removing heavy metals and organic pollutants from soils.
What are the types of soil remediation?
Soil Remediation Types and Techniques Used
- Thermal Soil Remediation. Thermal soil remediation is a method that removes specific types of contaminants that are best removed by subjecting soil to high temperatures.
- Encapsulation.
- Air Sparging.
- Bioremediation.
What are some examples of environmental remediation?
Environmental remediation techniques include excavation, dredging, oxidation, soil vapor extraction, thermal desorption, pump and treat, nanoremediation, and more.
What is remediation cost?
Remediation Cost means the cost to remedy any Environmental Liability using the most cost effective methods and manner that satisfy applicable Environmental Laws, and which are consistent with the continued use of the affected Assets in the same capacity and for the same purposes as they were being used on the …
How do you purify soil?
One of the most interesting approaches for soil purification is bioremediation. In bioremediation, micro-organisms are used to break down the contaminants within the soil. Bioremediation is most typically used to treat organic contaminants such as oils and petroleum-based fuels.
How long does it take for bioremediation to work?
The bioremediation process may take anywhere from several months to several years to complete, depending on variables such as the size of the contaminated area, the concentration of contaminants, temperature, soil density, and whether bioremediation will occur in situ or ex situ.
How do you excavate contaminated soil?
Contaminated soil is excavated using standard construction equipment, like backhoes and excavator trackhoes. The equipment chosen depends on how large and deep the contaminated area is, and whether access is limited by the presence of buildings or other structures that cannot be moved.