Table 1.
Total cell count per liter volume of the three BAC filters
| Day | Cell number (1011/L) | ||
|---|---|---|---|
| Filter 1 | Filter 2 | Filter 3 | |
| 82 | 7.7 ± 1.8 | 7.3 ± 2.6 | 7.4 ± 1.2 |
| 88 | 8.1 ± 2.7 | 7.3 ± 1.0 | 7.4 ± 0.8 |
| 95 | 8.6 ± 1.4 | 7.3 ± 1.0 | 8.2 ± 1.6 |
| 96 | 4.5 ± 0.9 | 4.7 ± 1.0 | 4.3 ± 0.8 |
| 103 | 8.6 ± 2.3 | 7.8 ± 2.6 | 7.0 ± 1.6 |
The biomass densities were measured from activated carbon samples taken from the top surface of the filter beds. Data show means of three replicates ± standard deviation. Filters 1 and 2 were filled with granular activated carbon whereas filter 3 was filled with extruded activated carbon