Thermal desorption is actually a remediation method that is being used in cleaning soils that are contaminated. This kind of method will use heat in order to vaporize contaminants and works for the volatile contaminants. It includes the organic wastes such as that is composed of hydrocarbons, paint wastes, mixed wastes and some others more.
To use thermal desorption, various soil characteristics should be considered in the process. It includes moisture, bulk density and some others more. If in case the moisture content of the soil is just too high, the cost of the treatment will be greater or higher because of the extra energy that will be used in drying the soil.
The idea about thermal desorption is that this will need the process of heating the soil and vaporizing the contaminants that have low boiling point, which will collect the contaminants and to also output the remediated soil.
The heat that is also applied by the disorder will affect directly the low boil temperatures of organic contaminants and will also readily turn this into vapor or perhaps will volatilize it. Absorption is actually a property of the soil and this is also the ability of the soil to accumulate the contaminants on the surface of the particle.
Thermal desorption is considered to be one of the more versatile treatment methods due to the reason where it could be implemented on site or off site. For the larger projects, it is usually desirable to use for the onsite treatment system in order to cut down the transportation costs, but for the small projects, it is usually not cost effective in investing on the capital that’s needed for the on site thermal desorption unit.
One of the biggest benefits of thermal desorption is where this is very fast. Depending on the soil and the contaminant conditions, the throughput between 20 and 160 tons per hour will be achieved. This is because of the speed that can be achieved by thermal desorption and it is likewise used for time sensitive projects.
Thermal desorption likewise is used in remediating sites which have not been contaminated extensively. Another thing about thermal desorption is that this will need excavation in treating the soil, which is why treatments of small contaminated areas are possible to where other treatment systems could not treat like the small volumes of soil.
Thermal desorption is usually being used in cases to where the soil will be reused after the treatment. Thermal desorption is also an ideal system for such projects because the treatment will occur onsite and will not change the soil’s physical characteristics. Thermal desorption may need watering after the treatment process because moisture that’s present in the soil before the treatment will have to be removed, but the soil is the same in the case of the low temperature thermal desorption.
Direct thermal desorption is very successful and is likewise a viable option to remediate contaminated sites. Because of the unexpected roofing materials that’s mixed in with other contaminants, indirect thermal desorption is not a satisfactory remediation technique on the hazardous materials.