Table 1.
Mean concentrations of nutrients and pharmaceuticals in urban (U) and hospital (H) treated effluents and Arve river up- (RU) and downstream (RD) from the WWTP Output (standard deviation in brackets).
| U | H | RU | RD | |
|---|---|---|---|---|
| Ammonium (mg⋅l−1) | 4 (3.7) | 0.3 (0.4) | 0.24 (0.06) | 0.06 (0.02) |
| Nitrite + nitrate (mg⋅l−1) | 16.5 (9.6) | 65.6 (58.7) | 1.2 (0.3) | 0.8 (0.09) |
| Orthophosphate (mg⋅l−1) | 2.3 (1) | 8.9 (1.5) | 0.02 (0.01) | 0.04 (0.01) |
| COD (mg⋅l−1) | 22.8 (5.1) | 23.9 (2.9) | - | - |
| TSS (mg⋅l−1) | 4.5 (2.5) | 5.3 (1.7) | 3.5 (0.7) | 3.3 (2.5) |
| NSAIDs (μg⋅l−1) | 1 (0.4) | 0.14 (0.04) | 0.0004 (0) | 0.0301 (0.013) |
| Beta-blockers (μg⋅l−1) | 0.5 (0.19) | 0.2 (0.06) | 0.0036 (0.0047) | 0.0119 (0.0071) |
| Antibiotics (μg⋅l−1) | 0.09 (0.06) | 2.6 (1.5) | 0.0025 (0.0001) | 0.0054 (0.0022) |
| Anticonvulsant (μg⋅l−1) | 0.5 (0.12) | 0.6 (0.19) | 0.002 (0.0027) | 0.0118 (0.0055) |
| Analgesic (μg⋅l−1) | 0.4 (0.31) | 0.9 (1.3) | 0.138 (0.0141) | 0.1672 (0.0648) |
| Total PhC (μg⋅l−1) | 2.5 (0.6) | 4.5 (2.6) | 0.1465 (0.0122) | 0.243 (0.120) |
PhC, pharmaceutical compounds; COD, chemical oxygen demand; TSS, total suspended solids; NSAIDs, non-steroidal anti-inflammatory drugs.