Table 2.
Dominant prokaryotic phyla percentages in the slow sand filtration systems (SSF) tested1.
| Phyla | SSF-1 (control) | SSF-2 (iron) | SSF-3 (copper) | SSF-4 (brass) |
|---|---|---|---|---|
| Proteobacteria | *42.89% | *43.2% | *37.57% | *42.54% |
| Acidobacteria | *16.92% | *12.05% | *12.46% | 0.4% |
| Planctomycetes | *14.9% | *14.64% | *11.74% | 0.6% |
| Bacteroidetes | *6.46% | *11.39% | *10.64% | *5.46% |
| Verrucomicrobia | *4.38% | *3.83% | 5.09% | 0.3% |
| Actinobacteria | 1.2% | 0.9% | *8.69% | *1.9% |
| Firmicutes | 0.7% | 0.2% | 1.2% | *15.5% |
| Cyanobacteria | 1.3% | 2.5% | 1.2% | *31.1% |
*The main five phyla detected in all the SSF schmutzdeckes. See Fig. 4 for their relative abundances.
1Streptophyta plant subdivision genera were detected.