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1
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Effect of Development of the town of Przemysl on Operation of its Sewerage System

100%
Stec A., Słyś D.
Ecological Chemistry and Engineering S
|
2013
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vol. 20
|
issue 2
381-396
EN
The paper presents the results of the analysis of the sewage system functioning in the city of Przemysl. It was assumed that, as a result of joining to the city new areas, the volume of stormwater discharged to existing combined sewer system would increase continuously. The information about the areas that are planned to be joined was drawn from current development plan of the city. On the basis of data received from the sewage system exploiter hydrodynamic model of the drainage basin of Zasanie quarter was created. The model is based on the existing sewerage network design and development plan of the city. Simulations with the use of real-life precipitation data collected by the pluviometer in Przemysl were carried out with the use of Storm Water Management Model program.
PL
W pracy dokonano analizy funkcjonowania systemu kanalizacyjnego miasta Przemyśla, w której założono wzrost ilości ścieków deszczowych odprowadzanych do istniejącej sieci kanalizacji ogólnospławnej, będący wynikiem przyłączenie do miasta nowych obszarów. Tereny te zostały ustalone zgodnie z obowiązującym „Studium Uwarunkowań i Kierunków Zagospodarowania Przestrzennego Miasta Przemyśla”. Na podstawie danych uzyskanych od eksploatatora systemu kanalizacyjnego stworzono model hydrodynamiczny zlewni dzielnicy Zasanie. Model ten został zbudowany w programie Storm Water Management Model na podstawie projektu istniejącej sieci kanalizacyjnej miasta i planów zagospodarowania przestrzennego. Do symulacji wykorzystano rzeczywiste dane opadowe, zarejestrowane na deszczomierzach w Przemyślu. Celem przeprowadzonej analizy było określenie wpływu rozwoju terenów miejskich na przepływy ścieków systemem kanalizacyjnym.
2
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The Analysis of Variants of Water Supply Systems in Multi-Family Residential Building

100%
Słyś D., Stec A.
Ecological Chemistry and Engineering S
|
2014
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vol. 21
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issue 4
623-635
EN
Climate change, improper use of water resources, surface waters pollution as well as increase of water requirements are the results of growing population of people in the world. It causes water deficiency in majority of countries in the world, including Poland. Due to the water pollution advanced technologies for its treatment are in demand, what leads to increase of water price. In this connection, there are more often taken actions to reduce water consumption by using rainwater to flush toilets, wash cars, do laundry or water green areas. This publication presents results of Life Cycle Cost analysis of two variants of water supply systems designed for multi-family residential building situated in Rzeszow. In line with LCC methodology the calculations were made throughout the whole life-cycle of the building considering initial investment outlays intended for construction of water supply system as well as operation and maintenance costs. In the first of analyzed variants it was assumed that the system would be fed by municipal water supply network. In the second variant rainwater harvesting system for domestic use was additionally applied. Rainwater stored in the tank would be used in sanitary installation to flush toilets, what leads to lowering the costs of municipal water purchase, reducing fees for rainwater discharge to sewage system and consequently is beneficial for financial standing of the examined building.
3
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Optimization of The Hydraulic System of The Storage Reservoir Hydraulically Unloading The Sewage Network

100%
Stec A., Słyś D.
Ecological Chemistry and Engineering S
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2014
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vol. 21
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issue 2
215-228
EN
After presentation of the characteristics of a water reservoir in CaCO3 excavation pit, called the Turkusowe Lake, situated in the Wolin National Park on the Wolin Island, available results of the analyses referring to the quality of surface water of this water reservoir and being carried out since 1986 as well as those of own studies being carried out from 1999 to 2010 were gathered, collecting this way a research material covering the quarter-century 1986-2010. It was shown that the Turkusowe Lake is a water reservoir being resistant by nature to eutrophication (lake basin development and depth, surrounding by the heights adhering to it, and presence of CaCO3 building the lake basin), whereas an increase in the trophic level and development of eutrophication phenomena in the form of weak phytoplankton blooms being observed, particularly in 2005-2010, is connected with increased anthropogenic pressure in the form of direct discharge of municipal sewage to the lake and waste-water to the soil in the alimentation zone of underground waters feeding this lake. The extent of anthropogenic pressure was so big that it started to prevail over the natural processes limiting an increase in the trophic level in this lake.
4
Content available remote

A LCC Analysis of Rainwater Management Variants

81%
Słyś D., Stec A., Zeleňáková M.
Ecological Chemistry and Engineering S
|
2012
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vol. 19
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issue 3
359-372
EN
The paper presents results of the Life Cycle Cost (LCC) analysis carried out for several variants of rainfall water management in a newly designed multi-family dwelling house. According to the LCC methodology, calculations were performed for the whole undertaking life cycle with both investment outlays and operation/maintenance costs taken into account. The LCC analysis was carried out, in particular, for a variant assuming that the rainwater collected from the roof will be entirely discharged to the sewage system. On the other hand, the second variant provided for replacement of traditional building roof with a green one. Facilities of that type, thanks to their retention properties, may delay runoff of rainwater and reduce the overall quantity of water discharged from roof surface and therefore can be classified as Sustainable Urban Drainage Systems. In the third case considered, rainwater is to be utilised in the building. It was assumed that precipitation water will be stored in a tank and used in the sanitary water supply system for flushing toilets, thus reducing the overall tap water purchase costs.
PL
Przedstawiono wyniki analizy LCC dla kilku wariantów zagospodarowania wód opadowych dla projektowanego wielorodzinnego budynku mieszkalnego. Zgodnie z metodologią określania Life Cycle Cost wykonano obliczenia w pełnym cyklu istnienia przedsięwzięcia, uwzględniając zarówno nakłady inwestycyjne, jak i koszty użytkowania i konserwacji. Analiza LCC została przeprowadzona dla wariantu, w którym założono, że wody opadowe z dachu zostaną odprowadzone w całości do systemu kanalizacyjnego. Natomiast w drugim wariancie tradycyjny dach budynku został zastąpiony dachem zielonym. Tego typu obiekty dzięki swoim właściwościom retencyjnym mogą opóźniać spływ wód opadowych i redukować całkowity odpływ z powierzchni dachu, przez co zaliczane są do zrównoważonych systemów odwadniających (Sustainable Urban Drainage Systems). W trzecim przypadku zastosowano system gospodarczego wykorzystania wody deszczowej w budynku. Założono, że zmagazynowane w zbiorniku wody opadowe zostaną wykorzystane w instalacji sanitarnej do spłukiwania toalet, co pozwoli obniżyć koszty zakupu wody wodociągowej i wpłynie korzystanie na wyniki finansowe funkcjonowania obiektu mieszkalnego.
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