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To decontaminate contaminated soils, there are numerous environmental remediation methods used to lessen the chance of causing more harm at the site and to the environment especially during heavy rains. Onsite treatment and off site removal of the contaminated soil are included in the treatment method. Environmental remediation contractors make use of more than one techniques as these cannot offer total clean up the contaminated land. The 3 methods used to remediate the contaminated land are physical removal and containment of polluted soil, soil washing and bioremediation. Removing and Containing Infected Soil The land containing contaminated soil is cleaned with the physical removal of contaminated soil. In this clean up method, people dump the soil in a landfill or incinerate in. Nevertheless the problem with this method is that it can cause new problems like air pollution via burning the toxic material or incarcerating the contaminated soil without decontamination. Liquid or solid contaminants can chemically or physically combine with soil particles. The type of contamination determines the treatment plan which will be utilized. Mostly, heavy metals are broken down into compounds that cannot interact with other materials while toxic organic chemicals like solvents as well as pesticides are incinerated. In landfill, containment method is employed and it includes the utilization of impermeable layers of plastic liners and dense clay caps. In order to protect against spreading the contamination from rain water run-off the soil is isolated on-site. Soil washing method This is pump-and-treat method in which chemical solvents are used to remove toxic materials from the soil. Contaminated soil is cleaned in place with no need to excavate. Chemicals are pumped into the ground to ensure that harmful toxins are flushed away from the ground moving them toward wells that pump it out for processing. This method is ideal if the soil underneath the polluted area is like clay which means not permeable. Chemical treatments using organic and inorganic acids and chelating agents are employed to eliminate heavy metals. Nonetheless, secondary harmful wastes are generated by this approach which may even require extra treatment. Heating oil and solvents are contaminants and they can be present in the soil as liquids and can gradually and ultimately dissolve into the groundwater. In cases like this, to dissolve these pollutants, environmental remediation contractors make use of chemicals such as detergent-related surfactants, and cosolvents like ethanol or methanol. Bioremediation technique This method is thought to be the soundest for the environment. It entails inciting the growth of naturally occurring waste-eating microorganisms so as to break down organic pollutants in the soil. This can be undertaken at the site or soon after excavation. Contaminants are broken down by microorganisms while they use them as a source of food during the aerobic processes, which normally requires oxygen. In general, the slurry bioremediation method will be utilized by environmental remediation contractors in case they used bioremediation method after soil removal. This is going to keep the soil suspended and the microbes in contact with the pollutants by mixing the soil in water. Another bioremediation method is the solid-phase wherein the excavated soil is placed in an isolated area wherein it's being tilled with nutrients and water in order to aid the growth of the microorganisms. Environmental remediation contractors work in environmental construction companies and hubzone small business and help with disaster recovery. They're a team of environment experts that can assist you treat any difficult contamination issue by employing good teamwork, the ideal technique and the best suited technology.
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