Table 1 Summarising numbers on scrubber washwater concentrations, fluxes and impact on water quality for scenario HIGH (20% scrubbers)
From: The impact of scrubber discharge on the water quality in estuaries and ports
|  | Units | Conc. docks (1) | WQS (2) | CLOSED loop—scenario HIGH | OPEN loop—scenario HIGH | ||||
|---|---|---|---|---|---|---|---|---|---|
Discharge conc. (90th perc.) | Flux kg year−1 (20% scrubbers) | Conc. increase docks | Discharge conc. (90th perc.) | Flux kg year−1 (20% scrubbers) | Conc. increase docks | ||||
Cr | µg L−1 | 3.34 | 5 | 10,120 | 448 | 0.122 | 45.0 | 342 | 0.093 |
Cu | 8.38 | 7 | 1780 | 78 | 0.021 | 130 | 998 | 0.273 | |
Ni | 5.86 | 4* | 6060 | 268 | 0.073 | 127 | 994 | 0.272 | |
Zn | 32.9 | 20 | 1524 | 66 | 0.018 | 260 | 1863 | 0.509 | |
V | 3.94 | 4 | 25,000 | 1107 | 0.303 | 500 | 4069 | 1.112 | |
Ace | ng L−1 | 4.92 | 60 | 745 | 3.28E−02 | 8.96E−03 | 648 | 5.27 | 1.44 |
Acy | 7.20 | 4000 | 185 | 7.87E−03 | 2.15E−03 | 536 | 4.34 | 1.19 | |
Ant | 2.67 | 100* | 446 | 1.96E−02 | 5.37E−03 | 308 | 2.50 | 0.685 | |
Fluoran | 9.51 | 6.3* | 661 | 2.88E−02 | 7.89E−03 | 478 | 3.84 | 1.05 | |
Flu | 3.72 | 2000 | 2370 | 1.05E−01 | 2.86E−02 | 1200 | 9.81 | 2.68 | |
Naph | 8.24 | 2000* | 6370 | 2.82E−01 | 7.70E−02 | 6960 | 57.0 | 15.6 | |
Phe | 7.95 | 100 | 6970 | 3.08E−01 | 8.43E−02 | 3700 | 30.3 | 8.28 | |
Pyr | 13.0 | 40 | 554 | 2.40E−02 | 6.55E−03 | 1220 | 9.90 | 2.71 | |
Total PAH | 58.1 |  | 22,200 | 9.80E−01 | 2.68E−01 | 13,620 | 111 | 30.4 | |