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COD removal rates in different components of the liquid treatment system. Data are mean ± S.D. (range).
| COD removal rate |
||
|---|---|---|
| mg h−1 | kg m−3GAC d−1 | |
| settling tanksa | 195 ± 104 (65–489) | – |
| pre-process tank GAC | 428 ± 197 (101–749) | 0.64 ± 0.30 (0.15–1.12) |
| EC process | 58 ± 217 (-340–460)b | – |
| post-process holding tank GAC | 64 ± 47 (10–200) | 0.10 ± 0.07 (0.01–0.30) |
Data from steady state only (d > 14), see figure.
Negative values denote that measured COD increased over treatment time.
