Waterlight wall
Natural water table
Polluted area
Downstream
drainage element
Waterlight layer
Bank of filters with
removable cartridges
(1, 2 or 3, ...)
Upstream-harnessing
drainage element
280
Permeable Reactive Barrier
from a simple clearing of clogged sections to a full replacement of the reactive medium (particularly recommended for barriers that use the adsorption principle). For example, the French company Soletanche-Bachy uses a
patented prefabricated three-chamber system that is inserted into a shaft or
vault/cell. Its two lateral chambers are filled with gravel to passively guide/
manipulate the natural groundwater flow and also permit access to the reactive material, which is usually placed in the middle chamber (Figure 13.3). A
PRB in Amersfoort, the Netherlands, is an EC-PRB, which passively collects
the groundwater through a cutoff wall, and discharges it by means of a pipe
FIGURE 13.3
Panel-drain principle. (Courtesy by Soletanche-Bachy, Solenvironment, Paris, France.)
Natural water table
Polluted area
Downstream
drainage element
Waterlight layer
Bank of filters with
removable cartridges
(1, 2 or 3, ...)
Upstream-harnessing
drainage element
280
Permeable Reactive Barrier
from a simple clearing of clogged sections to a full replacement of the reactive medium (particularly recommended for barriers that use the adsorption principle). For example, the French company Soletanche-Bachy uses a
patented prefabricated three-chamber system that is inserted into a shaft or
vault/cell. Its two lateral chambers are filled with gravel to passively guide/
manipulate the natural groundwater flow and also permit access to the reactive material, which is usually placed in the middle chamber (Figure 13.3). A
PRB in Amersfoort, the Netherlands, is an EC-PRB, which passively collects
the groundwater through a cutoff wall, and discharges it by means of a pipe
FIGURE 13.3
Panel-drain principle. (Courtesy by Soletanche-Bachy, Solenvironment, Paris, France.)