Research Article
Comparison of Simultaneous Nitrification and Denitrification for Three Different Reactors
Table 2
Summary of conditions in the reactor.
| | Condition | Suspended sludge reactor (SSR) | Entrapped sludge reactor (ESR) | Mixed sludge reactor (MSR) |
| | Working volume (L) | 10 | 3 | 3 | | Influent feed | Batch | Batch | Continuous | | Air supply | Intermittent | Intermittent | Continuous | | Air flow rate (L/min) | 0.5 | 0.2 | 0.2 | | Dissolved oxygen (DO) in aerobic condition (mg/L) | 4-5 | 4-5 | 4-5 | | Dissolved oxygen (DO) in anaerobic condition (mg/L) | 0.5 | 0.5 | 3-4 | | Influent NH4-N (mg/L) | 40–50 | 40–50 | 40–50 | | Influent NO2-N (mg/L) | <3 | <3 | <3 | | Influent NO3-N (mg/L) | <1 | <1 | <1 | | C/N ratio | 1.5 | 1.5 | 1.5 |
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