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ASSESSMENT OF COMBINED SEWER OVERFLOW CHAMBERS IN THE CITY OF TRNAVA USING CFD MODELING
Abstract
Lengthening periods between precipitation have been recorded and we can see a change in the distribution of rain over time. An increased number of these phenomena has also been confirmed by the IPCC. Due to this change in the redistribution of rainwater and the impact of high urbanization, sewerage systems are affected. The problem of a high number of impermeable areas is also associated with a high degree of urbanization. During torrential rains in combination with impermeable surfaces, the time of outflow into the sewerage network is reduced and the amount of water drained through the sewerage network is increased. In these cases, the flow in the sewer network may be higher than the design flow and network overload may occur. These networks contain combined sewer overflows (CSO?s), which are currently considered to be sources of pollution for the recipient. The aim of this work is to use CFD modeling to assess the sewer network, CSOs themselves and find a suitable solution. The city of Trnava was chosen as the locality of interest, where there are 22 CSO?s.
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References6
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Technical infrastructure: https://www.trnava.sk/sk/clanok/technicka-infrastruktura [25.11.2021]
Government Regulation n. 269/2010, Regulation of the Government of the Slovak Republic laying down requirements for achieving good water status, in Slovak
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