Environmental Engineering Reference
In-Depth Information
Figure 12.6.
Tox-map (of
the study site) constructed
time course of
bioremediation, leading
from a highly toxic to a
virtually non-toxic site. Each
step was linked to use of the
manipulations coupled to
microbial biosensor testing
detailed in
Fig. 12.1
to
progressively identify
constraints to
bioremediation and
alleviate them through site
engineering.
Figure 12.6
therefore represents a time
course of bioremediation at
the site as various
constraints were alleviated
and the bioremediation
proceeded progressively
further. At the start of the
time course, the tox-map
highlights that there were
three particularly toxic
areas of the site (designated
by increasingly bright red)
which are delineated by a
yellow boundary
representing site material
that is too toxic for
degradation by
micro-organisms
(predominantly BTEX
degrading bacteria) and
hence for any intrinsic
bioremediation to occur.
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