5. Conclusion

The presentation of the main soil treatment processes using physical and chemical techniques shows that there is a wide range of possibilities, to which biological treatments can be added. Table 7 summarizes the characteristics of the main treatments used in terms of cost, risk and image with operators, decision-makers and the public. Site remediation techniques are an adaptation of tried and tested methods, particularly in the field of wastewater treatment. This adaptation is based on the specific characteristics of the soil and groundwater. The main characteristic is the presence of a non-homogeneous mineral matrix and the fragmentary knowledge we have of its capacities and behavior, by...