In large urbanized areas is used rainwater drainage and that has a negative impact on the functionality of the sewerage system during heavy rainfall. Pipes and objects on the sewer network are being overloaded. This causes quick floods. In our research, we are focused on the assessment of part of the sewerage of Trnava city. The collectors C and D belonging to the eastern part of the city. In our assessing we use boundary rain from ombrografic station of Trnava City.

In connection with the optimization of operation at the selected Wastewater Treatment Plant (WWTP), it is important to perform an energy audit with an assessment of the use of electricity and the subsequent economic optimization of the equipment of the WWTP. We can perform the energy balance through Life Cycle Assessment (LCA) analysis in relation to EN ISO 140 40 [1].The aim of this study case is the analysis of the energy balance of WWTP. The appraisal was performed on three different interpretation variants of specific electricity consumption. The conclusion is a comparison of variants of quantification of specific electricity consumption.

Serbia is among the countries with the lowest percentage of industrial and municipal wastewater treatment plants. Approximately 72.0% of the cities have a sewerage system, while only 60.0% of the population are connected to the sewerage network. This article is about recent state of sewerage and wastewater treatment in Serbia. It consists of an analysis of the development and the percentage of population connections to the sewerage network. It provides data on the state of wastewater treatment plants in Serbia, as well as on the amount and method of wastewater treatment. The paper aims to analyse the current situation in the field of wastewater treatment.

No abstract

The paper shows the essence of CFD modeling in sanitary and environmental engineering. Paper includes practical example of assessment of CSO chamber, by using ANSYS Fluent software. This paper also explains the principles, upon which the ANSYS FLUENT software works. Then explains the methodology in creating the model, which is composed of: creating 3D geometry, creating computer mesh, entering of boundary conditions, defining input parameters and finally the actual simulations. In this paper there are also explained methods of modeling, which we use for solving the simulations at the Department of Sanitary and Environmental Engineering.