Water Quality (MBR)
| | Example of Influent and Effluent water Quality |
Parameter | Influent concentration (mg/L) | Effluent concentration (mg/L) | Removal rate (%) | pH | 6.35 | 7.05 | - | Colour (units) | 100 | 10 | 90 | Turbidity (NTU) | 400 | < 1 | > 99.9 | Susoended solids | 220 | < 10 | 95.5 | BOD5 | 180 | < 6 | 96.7 | COD | 400 | < 50 | 87.5 | Total bacteria (no./ml) | > 3 million | Not measurable | Log 6 | Ammonia | 30 | < 1 | 96.7 | Total Phosphate | 4 | < 0.5 | 87.5 | Total Nitrogen | 45 | < 15 | 66.7 | Volatile phenol | 50.6 | < 0.1 | 99.9 | Oil and grease | 36.7 | 3.4 | 91 | Sulfate | 3.8 | < 0.02 | 99.5 | | | | |
*Depending on the biological design of the system. Denitrification generally requires Anoxic conditions; Phosphate removal requires either chemical addition or anaerobic conditions |
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