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Our paper analyzes nitrogen and phosphorus removal from sewage in a biofilter. The analysis was based on the multi-variant simulations of the combined system: fixed-film – activated sludge performance. An activated sludge ASIM 2d model related with the model of pollutions’ transformations in fixed film was used for the calculations. The results of exploitation analyses performed on the objective treatment...
Aim of the study In the present study, we aimed to verify empirical formulas for calculating mean low flow (MLF) with the view to evaluating available water resources for mountain catchments, located in the upper Vistula Basin. The following empirical formulas were analysed: Punzet and Stachý. Material and methods The studies were conducted in the following stages: analysis of significant trends for...
This paper presents an analysis of stormwater quality from urbanized catchments (roads) and the effects of its treatment with retention and retention-infiltration basins. The research was carried out on two types of objects: a retention-infiltration basin in Kraków and three reservoirs by Road No. 4 near the city. The following pollution indexes were analyzed: COD, total suspended solids and mineral...
The study evaluated the selected empirical formulas for calculating annual peak flows with specific return period (QT ) in southern Poland. Data used in the calculations in the form of observation series of peak annual flows were derived from the Institute of Meteorology and Water Management in Warsaw and covered a multi-year period of 1986-2015. The data were statistically verified for their homogeneity,...
For this study we investigated the Rzyki G watercourse catchment situated in Andrychów District of Wadowice County in the western part of Poland’s Malopolska Region. The basis for the analyses were daily values of precipitation and runoff sums and flow rates in the analyzed watercourse. The empirical data were obtained from systematic precipitation measurement conducted in 1992-2001 by means of a...
Our paper analyzed the hydraulic aspects of a rainwater-collecting pipe operation in the conditions of rainfall events calculated using two different models. Model I is recommended for use across the entire country, while model II has a more local character. The dimensions of the collecting pipe were determined in two variants, depending on the employed rainfall model. Finally, the hydraulic capacity...
W artykule dokonano przestrzennej charakterystyki zasobów wodnych krajobrazów kulturowych zlewni zbiornika Mściwojów. Analiza została przeprowadzona w oparciu o dane przestrzenne oraz metody GIS za pomocą narzędzia Arc Hydro Tools 9.0 działającego w środowisku oprogramowania ARC GIS firmy ESRI. Szczegółowo przeanalizowano zlewnię dwóch cieków: Wierzbiaka i Kałużnika. W celu określenia rozkładu przestrzennego...
Wpływ czasu koncentracji i charakterystyk opadu na kształtowanie się hydrogramu odpływu w małej zlewni niekontrolowanej. Celem artykułu była ocena wpływ czasu koncentracji i charakterystyk opadu na kształtowanie się hydrogramu odpływu w małej zlewni niekontrolowanej. Analizę przeprowadzono dla zlewni rzeki Sidzinka. Jej zlewnia w większości znajduje się na terenie gminy miejskiej Kraków. Czas koncentracji...
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