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Dr. Mariusz Starzec
Department of Infrastructure and Water Management

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0 Climate Change
0 Drainage Systems
0 Flood Risk
0 Low Impact Development
0 Stormwater Management

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Drainage Systems
Flood Risk
Stormwater Management
Low Impact Development
Retention sewage canal
innovative drainage systems

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Journal article
Published: 05 September 2020 in Resources
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Stormwater is a valuable resource, whose management in harmony with nature is one of the main challenges of modern water management. The problems encountered are additionally exacerbated by the lack of space for the development of sustainable drainage systems. For that reason, new housing estates should be designed considering efficient stormwater management. This paper assesses five stormwater management models to determine the statistically most appropriate model for managing stormwater in newly designed multi-family housing estates using multi-criteria analysis. Various options were assessed by means of the scoring method based on six groups of criteria (political, economic, social, technological, legal, and environmental). The research considered the different views and priorities of the experts involved in stormwater management in Poland. A survey conducted among them showed that the statistically most suitable way of managing stormwater is its infiltration into the ground with the use of infiltration basins or tanks. Only if the possibility of their application is excluded, should the application of other models of stormwater management, especially its retention, be considered. It is expected that the research results presented in this paper will be a guide for investors and developers, and their use will allow people who are not experts in the field of stormwater management to make appropriate decisions.

ACS Style

Sabina Kordana-Obuch; Mariusz Starzec. Statistical Approach to the Problem of Selecting the Most Appropriate Model for Managing Stormwater in Newly Designed Multi-Family Housing Estates. Resources 2020, 9, 110 .

AMA Style

Sabina Kordana-Obuch, Mariusz Starzec. Statistical Approach to the Problem of Selecting the Most Appropriate Model for Managing Stormwater in Newly Designed Multi-Family Housing Estates. Resources. 2020; 9 (9):110.

Chicago/Turabian Style

Sabina Kordana-Obuch; Mariusz Starzec. 2020. "Statistical Approach to the Problem of Selecting the Most Appropriate Model for Managing Stormwater in Newly Designed Multi-Family Housing Estates." Resources 9, no. 9: 110.

Journal article
Published: 02 September 2020 in Resources
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To determine the effectiveness of the retention capacity utilization of traditional and innovative drainage systems equipped with damming partitions, the detailed model tests were carried out. The research results allowed indicating what values of the hydraulic parameter of the innovative drainage system should be adopted in order to effectively use the retention capacity of drainage collectors. The adoption of short distances between the LKR damming partitions and a high level of permissible rainfall of stormwater Hper turned out to be the most effective solution. In the most favorable conditions, the peak flow was reduced by up to 60% (717.46 dm3/s) compared to the values established in the traditional drainage system (1807.62 dm3/s). The benefits obtained resulted from the increased retention efficiency of the drainage system after equipping it with the damming partitions. It was found that the innovative system always achieved the maximum retention capacity with longer rainfall compared to the traditional system. In the real catchment area, an increase in the use of the retention capacity of the drainage system, from an initial value of 65% for a traditional system to almost 88% for an innovative system, was also found. Very large variability of the volume of accumulated stormwater in the conduits of the traditional and innovative drainage system was observed during rainfall, which generated the peak rainfall discharge in the innovative system. With rainfall of TRK duration, the innovative system accumulated up to 746.50 m3 more stormwater compared to a traditional system, which was 49.2% of the total retention capacity of the drainage system, with a value of 1515.76 m3. The approach to reduce the growing flood risk in cities provided the right approach to long-term urban drainage system planning, especially since traditional drainage systems are still the leading way to transport stormwater in cities. In addition, the innovative sewage system gives the possibility of favorable cooperation with any objects (LID) and retention tanks with any hydraulic model. The implementation of an innovative system allows achieving significant financial savings and reducing the need to reserve areas designated for infrastructure investments.

ACS Style

Mariusz Starzec; Józef Dziopak. A Case Study of the Retention Efficiency of a Traditional and Innovative Drainage System. Resources 2020, 9, 108 .

AMA Style

Mariusz Starzec, Józef Dziopak. A Case Study of the Retention Efficiency of a Traditional and Innovative Drainage System. Resources. 2020; 9 (9):108.

Chicago/Turabian Style

Mariusz Starzec; Józef Dziopak. 2020. "A Case Study of the Retention Efficiency of a Traditional and Innovative Drainage System." Resources 9, no. 9: 108.

Journal article
Published: 09 August 2020 in Energies
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The growing interest in the use of unconventional energy sources is a stimulus for the development of dedicated devices and technologies. Drain water heat recovery (DWHR) units can be an example of such devices. They allow the recovery of part of the heat energy deposited in grey water. This paper describes the results of research on the assessment of the financial profitability of the use of two horizontal heat exchanger solutions, taking into account the actual distribution of cold water temperature during the operating year in the plumbing and two operating regimes of the premises as the residential and service facilities. The analysis showed that the use of a horizontal heat exchanger with increased efficiency in a dwelling in a 15-year life cycle allowed for achieving more than twice as much savings (reaching up to EUR 1427) compared to a classic horizontal heat exchanger. At the same time, it was shown that the installation of this type of equipment was more profitable the greater the water consumption of the premises. The article also notes the impact of cold water temperature in the installation on the results of the analysis. It was featured that taking temperature on the basis of installation design recommendations led to significant distortions in the financial analysis. On the other hand, comparing the method of averaging the cold water temperature (daily, monthly and yearly), it was determined that averaging the temperature over the annual cycle was an acceptable simplification of the model. The research results presented in the paper have a practical aspect and may constitute guidelines for designers and potential investors. In addition, they can be an incentive to continue research on heat exchangers by other scientific centers, which on a global scale will increase the universality of their use.

ACS Style

Kamil Pochwat; Sabina Kordana-Obuch; Mariusz Starzec; Beata Piotrowska. Financial Analysis of the Use of Two Horizontal Drain Water Heat Recovery Units. Energies 2020, 13, 4113 .

AMA Style

Kamil Pochwat, Sabina Kordana-Obuch, Mariusz Starzec, Beata Piotrowska. Financial Analysis of the Use of Two Horizontal Drain Water Heat Recovery Units. Energies. 2020; 13 (16):4113.

Chicago/Turabian Style

Kamil Pochwat; Sabina Kordana-Obuch; Mariusz Starzec; Beata Piotrowska. 2020. "Financial Analysis of the Use of Two Horizontal Drain Water Heat Recovery Units." Energies 13, no. 16: 4113.

Journal article
Published: 20 February 2020 in Resources
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In order to identify the most effective variants for reducing flood risk in cities and to provide protection for water resources, an in-depth study was carried out. The research results allowed for the identification of sustainable drainage infrastructure solutions that should be used to increase the efficiency of traditional drainage systems. The most effective solution turned out to be the simultaneous use of low impact development facilities and stormwater flow control devices in drainage systems (Variant IV). Applicationof this variant (maximum discharge QOmax = 246.39 dm3/s) allowed for the reduction of the peak flow by as much as 86% in relation to those values that were established in the traditional drainage system (maximum discharge QOmax = 1807.62 dm3/s). The use of Variant IV allowed for a combination of the advantages of low impact development (LID) facilities and stormwater flow control devices in drainage systems while limiting their disadvantages. In practice, the flow of rainwater from the catchment area to the drainage system was limited, the share of green areas increased, and the drainage system retention capacity grew. The proposed approach for reducing the increasing flood risk in cities and providing protection for water resources provides a structured approach to long-term urban drainage system planning and land use guidelines.

ACS Style

Mariusz Starzec; Józef Dziopak; Daniel Słyś. An Analysis of Stormwater Management Variants in Urban Catchments. Resources 2020, 9, 19 .

AMA Style

Mariusz Starzec, Józef Dziopak, Daniel Słyś. An Analysis of Stormwater Management Variants in Urban Catchments. Resources. 2020; 9 (2):19.

Chicago/Turabian Style

Mariusz Starzec; Józef Dziopak; Daniel Słyś. 2020. "An Analysis of Stormwater Management Variants in Urban Catchments." Resources 9, no. 2: 19.

Journal article
Published: 05 May 2019 in Resources
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In recent years an increase of interest in usage of renewable energy sources as a substitution of fossil fuels is being noticeable. However, the waste heat potential, which can be used as an additional source of energy for heating water in buildings, is being omitted. The sources of this heat can be grey water discharged from such sanitary facilities as showers or washing machines. In response to this issue, we took on the task to define and analyze key factors affecting the development of DWHR (Drain Water Heat Recovery) systems using PESTLE (political, economic, social, technological, legal and environmental) analysis. The strengths and weaknesses of these systems were also identified. The studies were based on CFD (computational fluid dynamics) modeling tools. In the Autodesk Simulation CFD software environment, a DWHR unit was made, which was then analyzed for heat exchange efficiency. The obtained results were the basis for preparing the strategy for the development of Drain Water Heat Recovery systems. It was made using the SWOT/TOWS (strengths, weaknesses, opportunities and threats/threats, opportunities, weaknesses and strengths) method, which precisely orders information and allows presenting the project characteristic in readable way for a recipient. The results of the conducted analysis indicated the lack of acceptance on the part of potential users and the resulting need to promote the use of Drain Water Heat Recovery systems at residential level.

ACS Style

Sabina Kordana; Kamil Pochwat; Daniel Słyś; Mariusz Starzec. Opportunities and Threats of Implementing Drain Water Heat Recovery Units in Poland. Resources 2019, 8, 88 .

AMA Style

Sabina Kordana, Kamil Pochwat, Daniel Słyś, Mariusz Starzec. Opportunities and Threats of Implementing Drain Water Heat Recovery Units in Poland. Resources. 2019; 8 (2):88.

Chicago/Turabian Style

Sabina Kordana; Kamil Pochwat; Daniel Słyś; Mariusz Starzec. 2019. "Opportunities and Threats of Implementing Drain Water Heat Recovery Units in Poland." Resources 8, no. 2: 88.

Journal article
Published: 11 December 2018 in Water
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This article is aimed at defining the impact of the direction and velocity of waves of rainfall as they pass over interconnected stormwater detention tank systems. The simulations were conducted for a real urban catchment area as part of the Storm Water Management Model (SWMM) 5.1 programme. The results permit us to conclude that the direction and velocity of a moving wave of rainfall have a significant influence on the required volumes of interconnected stormwater detention tank systems. By comparing the modelling test results for stationary rainfall and rainfall moving over the urban catchment area, it has been demonstrated that differences in the required volume of the detention tank located at the terminal section of a stormwater drainage system are inversely proportional to the adopted value of the diameter of the outfall channel for upstream storage reservoirs. In extreme cases, the differences may be up to several dozen percentage points. Furthermore, it has been proven that the arrangement of the stormwater detention tanks in relation to one another and the adopted diameter of the outfall channel are key factors in identifying the degree to which the detention tanks are hydraulically dependent on one another.

ACS Style

Mariusz Starzec; Józef Dziopak; Daniel Słyś; Kamil Pochwat; Sabina Kordana. Dimensioning of Required Volumes of Interconnected Detention Tanks Taking into Account the Direction and Speed of Rain Movement. Water 2018, 10, 1826 .

AMA Style

Mariusz Starzec, Józef Dziopak, Daniel Słyś, Kamil Pochwat, Sabina Kordana. Dimensioning of Required Volumes of Interconnected Detention Tanks Taking into Account the Direction and Speed of Rain Movement. Water. 2018; 10 (12):1826.

Chicago/Turabian Style

Mariusz Starzec; Józef Dziopak; Daniel Słyś; Kamil Pochwat; Sabina Kordana. 2018. "Dimensioning of Required Volumes of Interconnected Detention Tanks Taking into Account the Direction and Speed of Rain Movement." Water 10, no. 12: 1826.

Conference paper
Published: 30 July 2018 in E3S Web of Conferences
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The aim of the article is to determine the impact of the structural solution of piling partitions of an innovative retention canals on the hydraulic conditions of its functioning in a specific sewerage network. Three types and different variants for controlling the operation of piling partitions were analyzed. The research shows that the construction of piling partitions has a significant impact on the achieved reduction rate of sewage outflow from the analyzed sewerage network. In addition, the construction of piling partitions also determines the volume of sewage that can be restored in sewer networks. The most tangible effects were observed when the partitions were made in the system (1), i.e. they had drainage holes of an adjustable geometry. In this example, a reduction in the peak sewage outflow from the sewage network to a value of only 531.36 dm3/s was observed, which corresponds to the value of the wastewater reduction coefficient β = 0.34. What is worth emphasizing, with the other methods of functioning of piling partitions, small values of the wastewater reduction coefficient were also obtained successively for the system (2) β = 0.35, while for the system (3) β = 0.43. On the basis of the tests carried out, it was also found that the authoritative time for dimensioning the sewerage network equipped with piling partitions always takes values higher than the reliable time for dimensioning a traditional sewerage network

ACS Style

Mariusz Starzec. The impact of construction of piling partitions on the retention efficiency of a sewerage network. E3S Web of Conferences 2018, 45, 00087 .

AMA Style

Mariusz Starzec. The impact of construction of piling partitions on the retention efficiency of a sewerage network. E3S Web of Conferences. 2018; 45 ():00087.

Chicago/Turabian Style

Mariusz Starzec. 2018. "The impact of construction of piling partitions on the retention efficiency of a sewerage network." E3S Web of Conferences 45, no. : 00087.

Conference paper
Published: 30 July 2018 in E3S Web of Conferences
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Simplified methods allow a straightforward and quick determination of parameters of interest. A simplified method of calculation to be used must provide sufficiently accurate simulation results. This paper presents the results of tests completed to evaluate the effects of the parameters which describe a sewer catchment area and network on the value of Tp, a parameter applied in the Dziopak method [18]. The results of 2997 hydrodynamic simulations allowed to formulate an artificial neural network the application of which enabled the determination of the value of Tp dependent on the design parameters of a sewer catchment area and network. The artificial neural network had a very low error R2 = 0.9972 between the expected and determined values of Tp. The completed tests indicated a relationship by which an increase of the rainfall duration, a parameter used in the dimensioning of detention tank, is concomitant to an increase in the value of Tp. The calculations made so far included an assumption that the Tp value is constant irrespective of the design rainfall duration for the dimensioning of detention tank; this assumption has led to gross calculation errors. The paper also provides proof that the inclusion of these relationships allows a more precise determination of the service volume required for a multi-chamber detention tank.

ACS Style

Mariusz Starzec. A critical evaluation of the methods for the determination of required volumes for detention tank. E3S Web of Conferences 2018, 45, 00088 .

AMA Style

Mariusz Starzec. A critical evaluation of the methods for the determination of required volumes for detention tank. E3S Web of Conferences. 2018; 45 ():00088.

Chicago/Turabian Style

Mariusz Starzec. 2018. "A critical evaluation of the methods for the determination of required volumes for detention tank." E3S Web of Conferences 45, no. : 00088.

Book chapter
Published: 25 September 2017 in Underground Infrastructure of Urban Areas 4
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ACS Style

M. Starzec; J. Dziopak; D. Słyś; Cezary Madryas; Andrzej Kolonko; Beata Nienartowicz; Arkadiusz Szot. Designing a retention sewage canal with consideration of the dynamic movement of precipitation over the selected urban catchment. Underground Infrastructure of Urban Areas 4 2017, 193 -200.

AMA Style

M. Starzec, J. Dziopak, D. Słyś, Cezary Madryas, Andrzej Kolonko, Beata Nienartowicz, Arkadiusz Szot. Designing a retention sewage canal with consideration of the dynamic movement of precipitation over the selected urban catchment. Underground Infrastructure of Urban Areas 4. 2017; ():193-200.

Chicago/Turabian Style

M. Starzec; J. Dziopak; D. Słyś; Cezary Madryas; Andrzej Kolonko; Beata Nienartowicz; Arkadiusz Szot. 2017. "Designing a retention sewage canal with consideration of the dynamic movement of precipitation over the selected urban catchment." Underground Infrastructure of Urban Areas 4 , no. : 193-200.

Book chapter
Published: 25 September 2017 in Underground Infrastructure of Urban Areas 4
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ACS Style

M. Starzec; J. Dziopak; J Rak; K Boryczko; Cezary Madryas; Andrzej Kolonko; Beata Nienartowicz; Arkadiusz Szot. The impact of the channel retention before the tank on its retention capacity. Underground Infrastructure of Urban Areas 4 2017, 181 -191.

AMA Style

M. Starzec, J. Dziopak, J Rak, K Boryczko, Cezary Madryas, Andrzej Kolonko, Beata Nienartowicz, Arkadiusz Szot. The impact of the channel retention before the tank on its retention capacity. Underground Infrastructure of Urban Areas 4. 2017; ():181-191.

Chicago/Turabian Style

M. Starzec; J. Dziopak; J Rak; K Boryczko; Cezary Madryas; Andrzej Kolonko; Beata Nienartowicz; Arkadiusz Szot. 2017. "The impact of the channel retention before the tank on its retention capacity." Underground Infrastructure of Urban Areas 4 , no. : 181-191.

Journal article
Published: 01 January 2016 in Journal of Civil Engineering, Environment and Architecture
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Celem artykułu jest określenie wpływu zastosowanego układu hydraulicznego w zbiorniku retencyjnym zlokalizowanym na końcu zlewni położonej wyżej na wymaganą pojemność użytkową wielokomorowego zbiornika retencyjnego położonego na końcu zlewni usytuowanej niżej. Symulacje przepływu i akumulacji ścieków wykonano w zlewni modelowej korzystając z programu hydrodynamicznego SWMM 5.1. Uzyskane wyniki badań modelowych wykazały, że układ hydrauliczny zbiornika ZR1 zlokalizowanego wyżej na sieci ma decydujący wpływ na wyznaczenie wymaganej kubatury użytkowej zbiornika retencyjnego ZR2 usytuowanego na niżej położonej sieci kanalizacyjnej. Na podstawie wyników symulacji komputerowych potwierdzono, że zbiornik ZR2 ma najmniejszą pojemność użytkową, gdy zbiornik górny ZR1 cechuje się jednokomorowym układem hydraulicznym. Uzyskane różnice w pojemności retencyjnej zbiornika dolnego ZR2 sięgają kilkudziesięciu procent, a w skrajnych przypadkach znacznie więcej. Ustalono zależności pojemności zbiorników zaobserwowane dla szerokiego zakresu zmiennego natężenia odpływu ścieków ze zbiorników retencyjnych ZR1 i ZR2

ACS Style

Józef Dziopak; Mariusz Starzec. WPŁYW UKŁADU HYDRAULICZNEGO ZBIORNIKA NA WYMAGANĄ POJEMNOŚĆ UŻYTKOWĄ UKŁADU ZBIORNIKÓW RETENCYJNYCH W KANALIZACJI. Journal of Civil Engineering, Environment and Architecture 2016, 1 .

AMA Style

Józef Dziopak, Mariusz Starzec. WPŁYW UKŁADU HYDRAULICZNEGO ZBIORNIKA NA WYMAGANĄ POJEMNOŚĆ UŻYTKOWĄ UKŁADU ZBIORNIKÓW RETENCYJNYCH W KANALIZACJI. Journal of Civil Engineering, Environment and Architecture. 2016; ():1.

Chicago/Turabian Style

Józef Dziopak; Mariusz Starzec. 2016. "WPŁYW UKŁADU HYDRAULICZNEGO ZBIORNIKA NA WYMAGANĄ POJEMNOŚĆ UŻYTKOWĄ UKŁADU ZBIORNIKÓW RETENCYJNYCH W KANALIZACJI." Journal of Civil Engineering, Environment and Architecture , no. : 1.

Journal article
Published: 01 January 2016 in Journal of Civil Engineering, Environment and Architecture
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ACS Style

Józef Dziopak; Mariusz Starzec. WKŁADKA PIĘTRZĄCA ZWIĘKSZAJĄCA EFEKTYWNOŚĆ HYDRAULICZNĄ PRZELEWÓW KONWENCJONALNYCH. Journal of Civil Engineering, Environment and Architecture 2016, 1 .

AMA Style

Józef Dziopak, Mariusz Starzec. WKŁADKA PIĘTRZĄCA ZWIĘKSZAJĄCA EFEKTYWNOŚĆ HYDRAULICZNĄ PRZELEWÓW KONWENCJONALNYCH. Journal of Civil Engineering, Environment and Architecture. 2016; ():1.

Chicago/Turabian Style

Józef Dziopak; Mariusz Starzec. 2016. "WKŁADKA PIĘTRZĄCA ZWIĘKSZAJĄCA EFEKTYWNOŚĆ HYDRAULICZNĄ PRZELEWÓW KONWENCJONALNYCH." Journal of Civil Engineering, Environment and Architecture , no. : 1.

Journal article
Published: 01 September 2014 in Journal of Civil Engineering, Environment and Architecture
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ACS Style

Jozef Dziopak; Mariusz Starzec. Influence of direction and velocity of precipitation displacement on sewage system dimensioning. Journal of Civil Engineering, Environment and Architecture 2014, XXXI, 63 -81.

AMA Style

Jozef Dziopak, Mariusz Starzec. Influence of direction and velocity of precipitation displacement on sewage system dimensioning. Journal of Civil Engineering, Environment and Architecture. 2014; XXXI (61 (3/I/14):63-81.

Chicago/Turabian Style

Jozef Dziopak; Mariusz Starzec. 2014. "Influence of direction and velocity of precipitation displacement on sewage system dimensioning." Journal of Civil Engineering, Environment and Architecture XXXI, no. 61 (3/I/14: 63-81.