48
Water In Ecosystems : A Non Renewable Resource
I So" i
-+
-+
Soil
- - - - - - - -
Low permeability
La)'<'
F '
3 C H C (Chlorinated Hydrocarbons) migration patterns .
19ure , . .
4.2.3 Evolution of contaminants
d ones calculation of the transfer time
For both the saturated and th~ uns~tura~~ta~ce c~ntents in water, must take into
and forecasting of the evolutIOn 0 su
account many phenomena such as:
• convection (directly carried along by water),
kinematic dispersion due to the tortuous flows between the grains of
soil,
h
diffusion in the aqueous or gaseous p ase,
•
I
d · the unsaturated
.
. I decom osition, particularly deve ope In
~~~~~g~~~ which m~y also exist in the saturated zone, etc .
Water In Ecosystems : A Non Renewable Resource
I So" i
-+
-+
Soil
- - - - - - - -
Low permeability
La)'<'
F '
3 C H C (Chlorinated Hydrocarbons) migration patterns .
19ure , . .
4.2.3 Evolution of contaminants
d ones calculation of the transfer time
For both the saturated and th~ uns~tura~~ta~ce c~ntents in water, must take into
and forecasting of the evolutIOn 0 su
account many phenomena such as:
• convection (directly carried along by water),
kinematic dispersion due to the tortuous flows between the grains of
soil,
h
diffusion in the aqueous or gaseous p ase,
•
I
d · the unsaturated
.
. I decom osition, particularly deve ope In
~~~~~g~~~ which m~y also exist in the saturated zone, etc .