2018–2022 | |||||||
---|---|---|---|---|---|---|---|
min. | average | max. | Value | min. | average | ||
min. | average | max. | |||||
before Dyna Sand filters | 84 | 10 | 1226 | 3468 | 1122 | 725 | |
after Dyna Sand filters | 162 | 0 | 63 | 319 | 50 | 63 | |
reduction, % | 84 | 20.0 | 93.3 | 100.0 | 96.4 | 11.4 | |
before Dyna Sand filters | 107 | 0 | 248 | 2000 | 150 | 310 | |
after Dyna Sand filters | 168 | 0 | 10 | 98 | 6 | 14 | |
reduction, % | 107 | 32.0 | 91.9 | 100.0 | 93.0 | 12.5 | |
before Dyna Sand filters | 98 | 16 | 158 | 1000 | 119 | 141 | |
after Dyna Sand filters | 166 | 0 | 3 | 5 | 1 | 5 | |
reduction, % | 98 | 72.2 | 97.5 | 100.0 | 99.0 | 4.0 |
2018–2022 | |||||||
---|---|---|---|---|---|---|---|
Indicator Unit | Sampling point | Number of samples | Value | median | standard deviation | ||
min. | average | max. | |||||
temperature, °C | before Dyna Sand filters | 869 | 0.70 | 11.80 | 22.90 | 11.80 | 5.60 |
after Dyna Sand filters | 869 | 2.60 | 12.00 | 21.10 | 12.20 | 5.00 | |
before Lamella separator | 415 | 2.40 | 11.93 | 21.80 | 12.10 | 5.31 | |
after Lamella separator | 330 | 2.90 | 12.47 | 21.80 | 12.50 | 5.32 | |
pH | before Dyna Sand filters | 881 | 7.20 | - | 8.70 | 8.20 | 0.10 |
after Dyna Sand filters | 881 | 7.10 | - | 8.30 | 7.80 | 0.20 | |
before Lamella separator | 417 | 7.03 | 7.98 | 8.47 | 8.06 | 0.25 | |
after Lamella separator | 413 | 7.03 | 8.05 | 9.18 | 8.09 | 0.18 | |
conductivity, µS/cm | before Dyna Sand filters | 881 | 270.00 | 391.00 | 578.00 | 387.00 | 35.70 |
after Dyna Sand filters | 881 | 269.00 | 390.00 | 576.00 | 384.00 | 36.00 | |
before Lamella separator | 419 | 240.00 | 340.00 | 553.00 | 325.00 | 56.50 | |
after Lamella separator | 416 | 227.00 | 325.00 | 487.00 | 326.00 | 26.14 | |
turbidity, NTU | before Dyna Sand filters | 869 | 0.57 | 5.94 | 133.00 | 4.00 | 6.55 |
after Dyna Sand filters | 869 | 0.09 | 0.22 | 0.81 | 0.20 | 0.06 | |
before Lamella separator | 397 | 9.23 | 36.38 | 278.00 | 30.50 | 25.02 | |
after Lamella separator | 397 | 2.70 | 10.45 | 55.60 | 9.30 | 5.2 | |
color, mgPt·dm−3 | before Dyna Sand filters | 869 | 3.9 | 15.24 | 182.00 | 14.1 | 7.7 |
after Dyna Sand filters | 869 | 1.8 | 4.2 | 8.99 | 4.1 | 0.9 | |
before Lamella separator | 389 | 5.8 | 72.2 | 288.0 | 72.7 | 30.7 | |
after Lamella separator | 389 | 3.9 | 24.9 | 91.1 | 24.0 | 10.6 | |
UVA 254nm− | before Dyna Sand filters | 866 | 0.123 | 0.302 | 1.450 | 0.290 | 0.076 |
after Dyna Sand filters | 866 | 0.070 | 0.140 | 0.257 | 0.139 | 0.024 | |
before Lamella separator | 388 | 0.151 | 0.306 | 1.037 | 0.286 | 0.124 | |
after Lamella separator | 388 | 0.093 | 0.158 | 0.392 | 0.150 | 0.042 | |
KMnO4 index mgO2· dm−3 | before Dyna Sand filters | 318 | 1.00 | 2.44 | 4.10 | 2.44 | 0.45 |
after Dyna Sand filters | 318 | 0.21 | 1.32 | 2.30 | 1.36 | 0.34 | |
dry residue 105°C, % | before Dyna Sand filters | 55 | 170.0 | 226.4 | 328.5 | 226.0 | 32.3 |
after Dyna Sand filters | 55 | 120.0 | 204.4 | 304.0 | 205.0 | 33.3 | |
Fe total, mg· dm−3 | before Dyna Sand filters | 196 | 0.0080 | 0.1370 | 2.4800 | 0.0750 | 0.2390 |
after Dyna Sand filters | 196 | 0.0000 | 0.0112 | 0.1300 | 0.0100 | 0.0117 | |
Mn, mg·dm−3 | before Dyna Sand filters | 56 | 0.0004 | 0.0142 | 0.0438 | 0.0094 | 0.0121 |
after Dyna Sand filters | 35 | 0.0000 | 0.0004 | 0.0017 | 0.0004 | 0.0003 | |
chlorides, mg·dm−3 | before Dyna Sand filters | 115 | 8.50 | 13.51 | 18.00 | 14.00 | 2.17 |
after Dyna Sand filters | 114 | 10.00 | 13.32 | 18.00 | 13.00 | 1.78 | |
sulfur, mg·dm−3 | before Dyna Sand filters | 115 | 0.00 | 19.34 | 33.60 | 20.20 | 5.18 |
after Dyna Sand filters | 114 | 8.70 | 20.48 | 30.70 | 20.80 | 4.21 | |
phosphates, mg·dm−3 | before Dyna Sand filters | 114 | 0.000 | 0,030 | 0,140 | 0,020 | 0,032 |
after Dyna Sand filters | 93 | 0.000 | 0.014 | 0.084 | 0.010 | 0.016 | |
ammonia, mg·dm−3 | before Dyna Sand filters | 230 | 0,000 | 0.040 | 1.290 | 0.030 | 0.086 |
after Dyna Sand filters | 230 | 0,000 | 0.009 | 0.060 | 0.000 | 0.014 | |
nitrites, mg·dm−3 | before Dyna Sand filters | 115 | 0.000 | 0.011 | 0.090 | 0.010 | 0.011 |
after Dyna Sand filters | 112 | 0.000 | 0.001 | 0.021 | 0.001 | 0.003 | |
nitrates, mg·dm−3 | before Dyna Sand filters | 115 | 1.63 | 8.85 | 18.40 | 8.70 | 3.11 |
after Dyna Sand filters | 111 | 3.54 | 8.99 | 30.11 | 8.20 | 3.58 |
2018–2022 | |||||||
---|---|---|---|---|---|---|---|
Indicator Unit | Sampling point | Number of samples | Value | median | standard deviation | ||
min. | average | max. | |||||
flow, m3·h−1 | Dyna Sand filters | 767 | 100.0 | 306.3 | 466.0 | 351.0 | 97.2 |
Lamella separator | 724 | 26.8 | 40.3 | 46.3 | 40.4 | 2.3 | |
retention time, minute | Dyna Sand filters | 767 | 17.4 | 30.7 | 81.0 | 23.1 | 14.0 |
Lamella separator | 724 | 16.2 | 18.7 | 28.0 | 18.6 | 1.2 | |
filtration speed, m·h−1 | Dyna Sand filters | 767 | 1.5 | 4.5 | 6.9 | 5.2 | 1.4 |
coagulant dose, m·h−1 | Dyna Sand filters | 767 | 31,0 | 733 | 7021 | 415.2 | 686 |
Lamella separator | 643 | 147 | 319 | 760 | 318 | 79.2 | |
turbidity reduction, % | Dyna Sand filters | 869 | 63.3 | 93.2 | 99.6 | 94.9 | 5.6 |
Lamella separator | 396 | 35.5 | 67.16 | 97.79 | 68.32 | 12.45 | |
color reduction, % | Dyna Sand filters | 868 | 29.0 | 69.7 | 98.3 | 71.1 | 10,0 |
Lamella separator | 388 | 24.9 | 63.3 | 90.3 | 63.9 | 11.8 | |
UVA 254nm reduction, % | Dyna Sand filters | 865 | 26.2 | 52.6 | 93.0 | 52.4 | 8.1 |
Lamella separator | 385 | 20.2 | 46.2 | 79.9 | 45.6 | 8.8 | |
KMnO4 index reduction, % | Dyna Sand filters | 318 | 19.5 | 45.7 | 89.3 | 44.3 | 11.8 |
dry residue reduction, % | Dyna Sand filters | 55 | 0.5 | 9.7 | 34.1 | 7.5 | 7.6 |
Fe total reduction, % | Dyna Sand filters | 196 | 6.2 | 86.2 | 100.0 | 90.6 | 15.8 |
Mn reduction, % | Dyna Sand filters | 35 | 74.2 | 96.4 | 100.0 | 98.0 | 4.9 |
chlorides reduction, % | Dyna Sand filters | 114 | 0.0 | 4.8 | 25.0 | 0.0 | 6.3 |
sulfur reduction, % | Dyna Sand filters | 114 | 10.3 | 19.65 | 33.6 | 19.7 | 3.9 |
phosphates reduction, % | Dyna Sand filters | 93 | 0.0 | 49.6 | 100.0 | 54.9 | 35.1 |
ammonia reduction, % | Dyna Sand filters | 230 | 0.0 | 76.9 | 100.0 | 100.0 | 31.4 |
nitrites reduction, % | Dyna Sand filters | 112 | 25 | 90.2 | 100.0 | 93.2 | 13.7 |
nitrates reduction, % | Dyna Sand filters | 111 | 0.0 | 9.5 | 44.1 | 4.2 | 11.8 |