When there are too many harmful substances in the soil, which exceed the self purification capacity of the soil, the composition, structure and function of the soil will change, and the microbial activity will be eased. Harmful substances or their decomposition products will gradually accumulate in the soil through "soil → plant → human body", or be indirectly absorbed by the human body through "soil → water → human body", to the extent of harming human health, It is soil pollution.
Thermal desorption is a new non combustion technology. In recent years, it has been widely used in the remediation of soil contaminated by agricultural production systems, and has achieved good results in practical applications.
Thermal desorption production line Technical principle of equipment remediation of contaminated soil
The whole process technology of the thermal desorption production line heats the polluted soil to increase the saturated vapor pressure of the agricultural production system adsorbed on the soil, volatilizes into the gas phase and then escapes, and then processes the gas. With the wide application of engineering projects, thermal desorption has gradually developed into in-situ desorption (including hot gas, hot steam, etc.), mobile thermal desorption equipment, rotary kiln thermal desorption equipment, microwave method, etc. At present, hot steam, microwave heating, hot water, hot gas, etc heat treatment Technology for a wide range of applications PC Bs，PAHs， Pesticide, oil and other contaminated soil treatment.
