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Combined sewer are among the most important objects of a unified sewerage network and therefore high requirements are placed on these objects, whether from hydraulic, hydrological, hygienic or constructional requirements. Their main function, ie hydraulic, is to divide the inflow at the time of torrential rains into a flow continuing to the WWTP and a flow that is relieved from the OK to the recipient. Another important function of relief chambers is related to pollution. Some chamber designs can successfully capt...

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 t...

The purpose of mathematical modeling of runoff flow in sewer networks is to assess the hydraulic capacity and monitor their behavior in different conditions to predict the future state. Models of sewer networks are part of the design process. Their advantage is the possibility of simulating the future state of the network and the precipitation and runoff process in the context of climate change. With the help of simulations, it is possible to anticipate future conditions in the river basin and thus effectively des...

The incidence of extreme rainfall has increased in recent decades. This negative impact of climate change also calls attention to when dealing with the recovery and reconstruction of sewer networks. Slovak cities have built a combined sewer network, which in the event of heavy rainfall, is not able to fulfill their primary function. The pipes are not able to carry the large volume of mixed wastewater, and network overload occurs. This paper focuses on the assessment of individual collectors of the sewerage network...

By building artificial landscape elements, significant changes occur in the spatial structure of the city. The intensification of the formation of paved surface changes the hydrological characteristics of the area. Impermeable surface prevents the penetration of atmospheric waters into the soil horizon, which causes an increase in the volume of runoff, flood peak, and pollution loads in urban stormwater. As a consequence of this phenomenon, during heavy rains, a critical part of the city may be flooded. To reduce ...