Figure 1.
Schematic representation of the pilot experiment.
1-aeroelasticity;2-outlet;3-aeroelasticity collective chamber;4-perforated regulator plate;5-cyclic aeration system;6-pressure stabilization chamber;7-valve;8-voltage regulator pipe;9-aeration branch (DN15);10-aeration trunk (DN15);11-float;12-suspended carrier;13-filler bracket;14-air compressor;15-up-flow cylinder;16-watertight compartments;17-air chamber;18-back flow chamber;19-aeration chamber;20-inlet pipe;21-air releaser;22-anchor block.
Figure 2.
Variation of nitrogen pollutants concentrations for WLA-OBCO combined system during operation.
Figure 3.
Denitrification effects of WLA-OBCO combined system during operation.
Figure 4.
Variation of TOC concentration and removal efficiency during operation.
Figure 5.
Changes of oligotrophic denitrifiers number on the fillers during operation.
Figure 6.
DGGE profiles of the 250-bp PCR fragment of 16S rDNA genes (V3 region) amplified from different biofilm samples.
Table 1.
Closest relative species or isolated oligotrophic denitrifying bacteria of the selected clones (Determined by an NCBI BLAST search).