Biomedical Engineering Reference
In-Depth Information
20
Bkg
0
-20
-600
-500
-400
-300
-200
-100
0
20
Bkg
0
-20
-600
-500
-400
-300
-200
-100
0
20
T=0
0
-20
10
-600
-500
-400
-300
-200
-100
0
20
T=1
month
mg/L
0
1
-20
-600
-500
-400
-300
-200
-100
0
0.1
20
T=3
months
0
-20
-600
-500
-400
-300
-200
-100
0
0.01
20
T=10
months
0
-20
-600
-500
-400
-300
-200
-100
0
20
T=14
months
0
-20
-600
-500
-400
-300
-200
-100
0
Figure 10.8. Snapshots of MTBE distribution in Port Hueneme's full-scale biobarrier over the
evaluation period (from Johnson et al.,
2003
).
approximately 18 months. The system was comprised of sections relying on biostimulation
(air injection and oxygen injection only), and bioaugmentation (oxygen injection plus bioaug-
mentation with either the MC-100 or SC-100 cultures). Air injection occurred in the lower
concentration (
<
100
g/L) plume fringes, while oxygen gas addition and bioaugmentation
sections were aligned with the central core of the plume where combined concentrations of
MTBE, TBA, and BTEX components were in excess of 10,000
m
g/L. Figure
10.8
illustrates how
this full-scale system effected MTBE concentration reductions to non-detect levels (
<
5-10
m
m
g/L).
Search WWH ::
Custom Search