Technologies for Cleaning Up Contaminated Sites

Technologies for Cleaning Up Contaminated Sites

Certain land development or subdivision in Australia involves doing a significant amount of work to remove contaminants from the ground. Industrial spills, urban runoff, atmospheric pollution, and agricultural runoff could cause significant contamination in soil, sediment, fractured rock or dissolved in water. There are several remediation technologies that companies and contractors could use. Here is a list of some of the most popular remediation tech:

Bioremediation

This method makes use of various microorganisms that degrade and digest certain types of organic contaminants present in groundwater, sludge, solids, or soil. The microorganisms consume the contaminants and then metabolize them as an energy source, removing the impurities from the original source. Bioremediation should only be handled by skilled contractors, such as Earthworks remediation contractors Melbourne.

Air Sparging

This is a popular method used to clean up aquifers. The method provides aquifers with a dose of oxygen injection that will remove organic contaminants by a process of volatilization. It works on both volatile and non-volatile contaminants. The oxygen injection flushes out contaminants into a contained zone where the material can be treated.

Bioreactor Landfills

Organic waste is sent to landfills where it is treated with liquid and air that optimizes natural microbial processes that break down and degrade organic compounds. This method is fast and stable.

Electrokinetics

This technique is used with soil. The contaminated soil is placed between two ceramic electrodes. The electrodes are divided as a cathode and an anode. The soil is then given a direct, low-intensity electric current. The procedure causes water and ion to move towards the electrodes. Then these compounds are removed from the electrodes.

In Situ Chemical Reduction

This method treats contaminated, often toxic, organic compounds with a reductant material (or at least reluctant generating material. Then the degradation process starts from the subsurface and the contaminated compounds become potentially non-toxic. This method is highly recommended for removing toxic metals like lead as the process absorbs precipitation and degrades metals into oxyanions.

Evapotranspiration Covers

This is a lauded environmentally friendly way to remove contaminants. The method uses the natural way of how water precipitates out of landfills to remove contaminants at the same time. It’s suited for highly hazardous industrial landfills.

In Situ Flushing

This tech uses a solution to remove containments from the soil. It makes contaminants mobilize and soluble, making it easy to remove various toxic particles from soil.

Phytotechnologies

This is a unique type of contaminant removal method that uses vegetation to address the problems and flush out the toxins. It works with soil, sediment, and water areas. This method also destroys some types of contaminants wholly.

Multi-Phase Extraction

This method uses equipment like a downhole pump to create a vacuum to remove contaminated groundwater. Then vaporization is used to separate the water from contaminants such as petroleum. This system lowers water tables and should be carefully assessed before implementing.

Nanoscale Materials

Nanoscale materials have large surface area to volume ratio, so they are highly reactive. These materials can be used at large sites to remove contaminants such as oil or chlorine from soil and water. It’s commonly used at sites affected by oil spills.

Any of the above technologies are commercially available for remediating sites. Most of the above works with common contaminants like dioxins, arsenic, Chromium VI, mercury, and persistent organic pollutants. However, do use a skilled contractor and use careful monitoring systems in advance.

 

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