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Linking elevated rainfall with sewage discharge volume

Wiktor Halecki

Wiktor Halecki

Nano-Tech Environmental Polska Ltd.Cracow, Poland
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Halecki, Wiktor
, 
Anna Młyńska

Anna Młyńska

Department of Water Supply, Sewerage and Environmental Monitoring, Faculty of Environmental and Power Engineering, Cracow University of TechnologyCracow, Poland
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Młyńska, Anna
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Tomasz Sionkowski

Tomasz Sionkowski

Grundfos Pompy LtdPrzeźmierowo, Poland
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Sionkowski, Tomasz
 und 
Krzysztof Chmielowski

Krzysztof Chmielowski

Department of Natural Gas Engineering, Faculty of Drilling, Oil and Gas, AGH University of Science and TechnologyCracow, Poland
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Chmielowski, Krzysztof
  
31. Dez. 2023
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Online veröffentlicht: 31. Dez. 2023
Seitenbereich: 135 - 146
DOI: https://doi.org/10.2478/oszn-2023-0020
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© 2023 Wiktor Halecki et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1.

Daily sewage outflows from the WWTP and daily rainfalls in the period 2018–2023
Daily sewage outflows from the WWTP and daily rainfalls in the period 2018–2023

Figure 2.

Average daily sewage outflows from the WWTP and average daily rainfalls in particular years of the period 2019–2022
Average daily sewage outflows from the WWTP and average daily rainfalls in particular years of the period 2019–2022

Figure 3.

Frequency of daily sewage outflows at specific magnitudes from the WWTP in the period 2018–2023
Frequency of daily sewage outflows at specific magnitudes from the WWTP in the period 2018–2023

Figure 4.

Average daily sewage outflows from the WWTP and average daily rainfalls in specific months during the period 2018–2023
Average daily sewage outflows from the WWTP and average daily rainfalls in specific months during the period 2018–2023

Figure 5.

Frequency of daily sewage outflows at specific magnitudes from the WWTP in specific months during the period 2018–2023
Frequency of daily sewage outflows at specific magnitudes from the WWTP in specific months during the period 2018–2023

Figure 6.

Dependence between daily rainfalls and daily sewage outflows from the WWTP in the period 2018–2023
Dependence between daily rainfalls and daily sewage outflows from the WWTP in the period 2018–2023

Figure 7.

Dependence of daily sewage outflows from the WWTP on rainfall intensities
Dependence of daily sewage outflows from the WWTP on rainfall intensities

Descriptive statistics for daily sewage outflows in particular years during the period 2019–2022

Parameter Year
2019 2020 2021 2022
Min [m3/d] 2,520 3,820 7,630 5,760
Max 43,150 32,970 50,440 31,590
Avg 13,969 11,716 12,250 12,438
S 4,783 4,626 4,520 3,572
CV [−] 0.34 0.39 0.37 0.29

Descriptive statistics for daily sewage outflows in particular months of the period 2018–2023

Parameter Month
I II III IV V VI VII VIII IX X XI XII
Min [m3/d] 3,750 2,520 3,550 6,470 6,870 7,010 4,240 5,870 6,050 7,050 6,600 3,540
Max 35,260 32,970 18,430 31,090 43,150 30,320 28,370 50,440 35,430 31,350 26,670 31,590
Avg 13,546 14,856 11,631 11,890 14,635 12,525 12,543 12,185 12,603 12,184 10,658 11,505
S 4,591 4,232 2,332 3,725 5,768 4,263 4,343 5,403 4,925 4,047 2,916 4,318
CV [−] 0.34 0.28 0.20 0.31 0.39 0.34 0.35 0.44 0.39 0.33 0.27 0.38
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