Environmental Engineering Reference
In-Depth Information
Data
Applicability
Permeability
Technology applicable in zones of low hydraulic
conductivity, especially with a high proportion of
clay
Depth of water pool
The technology can be applied in different ways
in saturated and unsaturated ground
Scope of contamination
To evaluate the placement of electrodes and
recuperation shafts
Electro-osmotic
To estimate the flow rate of water and
contaminants that can be induced
Cationic exchange capacity
(CEC)
This is a more efficient technology when the
CEC is low
Metal analysis
Technology is applicable to soluble contaminants
in water, but not to non-polar organic products
Salinity
This technology is more efficient when the
salinity is low. Gaseous chlorine can be
produced by chlorine ion reduction at the anode
Factor of contaminant transfer
Characterizes the total current required to
depollute the site
Table 15.9. Data and applicability of the electrokinetic method [ITR 97]
15.5.3 . Incineration
The purpose of incineration is the transformation of pollutants by an increase in
temperature (800ºC-1,200ºC) that induces a conversion of the pollutants into carbon
dioxide and steam, with a precipitation of combustion residues. Transformation of
the pollutants into simple inoffensive molecules makes it possible to classify this
technique as one of the most effective. The ashes obtained after incineration are
transferred to the technical center to be disposed of or, in certain cases, re-used.
It is important to point out that the high temperatures used during incineration
have implications on the re-use of treated ground because of the changes in the
physical, chemical and biological properties of the material. The changes in ground
texture and loss of natural organic components reduce the capacities of treated
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