Research Article
Reduction of Waste Water in Erhai Lake Based on MIKE21 Hydrodynamic and Water Quality Model
Table 4
The reductions of pollution load in Erhai Lake
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| Hydrological period number | Wet period | Normal period | Dry period | TN | TP | CODcr | TN | TP | CODcr | TN | TP | CODcr |
| 1 | 70.74 | 3.64 | — | 44.43 | 1.67 | — | 16.74 | 0.75 | 39.65 | 2 | 317.37 | 27.24 | — | 187.45 | 17.88 | — | 92.69 | 5.23 | 186.02 | 3 | 39.75 | 1.37 | — | 29.02 | 0.74 | — | 13.32 | 0.33 | 24.38 | 4 | 54.01 | 4.03 | — | 43.36 | 2.09 | — | 17.01 | 1.02 | 23.77 | 5 | 20.64 | 2.00 | — | 15.80 | 1.26 | — | 7.54 | 0.62 | 13.54 | 6 | 36.37 | 1.25 | — | 29.61 | 1.51 | — | 10.32 | 0.60 | 10.35 | 7 | 177.96 | 14.88 | — | 146.67 | 9.69 | — | 52.09 | 4.02 | 59.90 | 8 | 54.04 | 3.69 | — | 44.62 | 3.15 | — | 31.39 | 1.65 | 18.09 | 9 | 9.19 | 1.01 | — | 6.87 | 0.95 | — | 4.72 | 0.48 | 5.39 | 10 | 13.33 | 1.58 | — | 9.83 | 1.04 | — | 6.68 | 0.49 | 7.67 | 11 | 10.45 | 1.46 | — | 8.08 | 1.09 | — | 5.65 | 0.49 | 3.65 | 12 | 16.02 | 1.36 | — | 12.81 | 1.67 | — | 8.55 | 0.70 | 6.84 | 13 | 30.13 | 2.85 | — | 24.38 | 2.48 | — | 17.11 | 1.25 | 23.95 | 14 | 21.44 | 1.82 | — | 16.77 | 2.02 | — | 11.74 | 0.95 | 14.15 | 15 | 18.36 | 1.95 | — | 14.73 | 1.61 | — | 10.45 | 0.73 | 8.35 | 16 | 10.38 | 0.84 | — | 7.60 | 0.49 | — | 4.87 | 0.25 | 2.26 | 17 | 12.93 | 0.81 | — | 9.26 | 1.06 | — | 6.41 | 0.48 | 4.01 | 18 | 17.69 | 0.90 | — | 12.26 | 1.09 | — | 7.54 | 0.49 | 6.18 | 19 | 9.42 | 0.78 | — | 6.98 | 0.62 | — | 4.51 | 0.30 | 3.58 | 20 | 12.36 | 1.42 | — | 8.20 | 0.93 | — | 5.52 | 0.43 | 4.97 | 21 | 11.36 | 1.20 | — | 8.37 | 0.82 | — | 5.60 | 0.44 | 9.91 | 22 | 27.59 | 2.13 | — | 17.38 | 1.14 | — | 11.27 | 0.65 | 14.30 | 23 | 32.39 | 3.51 | — | 22.38 | 2.76 | — | 14.95 | 1.32 | 21.43 | 24 | 15.13 | 1.64 | — | 10.67 | 1.20 | — | 7.43 | 0.65 | 10.71 |
| Total | 1039.04 | 83.38 | — | 737.90 | 59.32 | — | 374.07 | 24.32 | 523.05 |
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“—” is , and the amount of pollutants into lake is less than water environmental capacity.
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