Environmental Engineering Reference
In-Depth Information
(a)
(b)
100
100
80
80
60
60
40
40
Sand
Sand
20
20
0
0
No Osorb
Fe-Osorb
(1%)
Fe-Osorb
(2%)
Mg-Osorb
(1%)
Mg-Osorb
(2%)
Zn-Osorb
(1%)
Zn-Osorb
(2%)
No Osorb
Fe-Osorb
(1%)
Fe-Osorb
(2%)
Mg-Osorb
(1%)
Mg-Osorb
(2%)
Zn-Osorb
(1%)
Zn-Osorb
(2%)
100
100
80
80
60
60
40
40
Soil mix
Soil mix
20
20
0
0
No Osorb
Fe-Osorb
(1%)
Fe-Osorb
(2%)
Mg-Osorb
(1%)
Mg-Osorb
(2%)
Zn-Osorb
(1%)
Zn-Osorb
(2%)
No Osorb
Fe-Osorb
(1%)
Fe-Osorb
(2%)
Mg-Osorb
(1%)
Mg-Osorb
(2%)
Zn-Osorb
(1%)
Zn-Osorb
(2%)
Simulated runoff events
Simulated runoff events
1st
2nd rd
4th
5th
6th7th
1st
2nd
3rd4th
5th6th
7th
FIGURE 33.5
Removal eficiency of nitrate via unsaturated (a) and saturated (b) bioretention systems among Fe-Osorb, Mg-Osorb, and Zn-Osorb with three staggered concen-
trations (0%, 1%, and 2%) in two bioretention base media (sand and soil mix) from seven sequential runoff events. Loading for each event was 10 mg of nitrate-N in
1 L (10 ppm).
