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Connectors as a key to efficient storm water management system: an in-situ assessment of residential estates in Poland

Gama Marques Paulina

Architecture Civil Engineering Environment

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2023

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Vol. 16, no. 4

1--14

EN

Adaptation to climate change often aims to increase the ability of cities to retain water. In recent years, there has been a shift in the approach to managing storm water from traditional methods to nature-based methods, which view storm water as a valuable resource. This study conducted a systematic analysis of eleven contemporary housing estates that are commonly considered sustainable. The study aimed to identify the elements of rainwater management and determine whether these elements form a system. The research found that, in most cases, not all elements of a rainwater management system (RMS) were present. The housing estates in Gdańsk and Gdynia demonstrated some features of an RMS but were still incomplete due to missing elements such as channels and gaps in curbs that guide rainwater. The results suggest that the implementation of some elements of an RMS does not necessarily create a fully functional system. A fully effective RMS requires the integration of all necessary elements to allow water to flow between them.

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Review of impacts of climate changes on the urban water security of Islamabad, Pakistan

Shah Attaullah, Karim Rehmat, Ali Karamat

Journal of Water and Land Development

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2022

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no. 54

109--115

EN

The global warming and subsequent climate change has seriously threatened the glaciers of the Hindukush Karakoram Himalaya (HKH) region. These glaciers provide water to more than 60% people of the 11 countries, including Pakistan. The capital city of Pakistan has witnessed unprecedented urbanisation, population increase, development of new townships and associated economic activities. These challenges, together with climate change, have created severe pressure on the water resources of the city. In this mixed mode research, including questionnaire survey of 20 questions was distributed among the residents of the city online through Google Form. The questions were related to the expected impact of climate change on the availability of water, measures for conservation of water etc. About 205 residents from various parts of the city with different demographic backgrounds responded. This was followed by Focus Group Discussions (FDGs) of the experts and the major challenges to the urban water security of Islamabad with special reference to climate change have been assessed. The research has revealed that the water resources of the city are highly unsustainable. The residents have high concerns about the availability and quality of water. The results have shown that there is a number of governance issues in water distribution systems of the city. There are no organized water conservation strategies employed by City Government. The lack of institutional and policy framework has further complicated the situation. Residents seem willing for metering of water for its conservation. Recommendations have been made to municipal authorities for rational water resource management of the city.

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Contribution to the Treatment of Urban Wastewater in the City of Fez by Coagulation and Flocculation Using a Biodegradable Reagent

Elmansouri Ibtissame, Lahkimi Amal, Benaabou Mohamed, Chaouch Mehdi, Eloutassi Noureddine, Bekkari Hicham

Journal of Ecological Engineering

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2022

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Vol. 23, nr 2

77--85

EN

This study includes two parts; the first one, concerns evaluation of the physicochemical and microbiological quality of the urban wastewater of the city of Fez, through a space-time dynamics. In turn, the second part deals with the contribution to the treatment of these effluents, by a new biodegradable reagent in the process of physicochemical treatment (coagulation flocculation). For this purpose, the sampling of urban wastewater was carried out 4 months (September, December, February and June 2019), at a rate of two samplings per period on 4 specific sites along the river Fez, the degree of contamination of which differs from one site to another, according to space and time. The diagnostic of these stations showed a high level of pollution that is difficult to biodegrade. Indeed, this pollution can cause negative effects not only on the environment but also on human’s health. In order to take long-term action against the low quality of water and to replace certain inorganic coagulants, alternative processes for water treatment using cactus powder were set up. The characterization of results showed that the urban effluent has a high load in terms of electrical conductivity (EC), dissolved oxygen, chemical oxygen demand (COD), as well as concentrations of faecal coliforms, streptococci and staphylococci. In addition, the purifying power revealed that the removal rate of COD reaches maximum values of 38% and 58% forlimeand the mixture of lime with cactus powder, respectively.

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The Applications of Graph Algorithms to Modeling of Integrated Urban Water Management System

Łazuka Ewa, Futa Anna, Jastrzębska Magdalena, Łagód Grzegorz, Szeląg Bartosz, Fatone Francesco

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 5

277--289

EN

The application of methods using graphs to model a variety of engineering issues has been known for several decades, but the application of graph algorithms to model the urban water management issues is a completely new approach. The article reviews the scientific literature on integrated urban water management systems in terms of the use of graph theory algorithms in this topic. Such a review has not been done before and constitutes a completely novel study. Some of the algorithms presented are directly derived from graph theory, while others were developed from other sciences, including environmental engineering or genetics, to solve specific engineering problems. The paper presents a general scheme and a brief description of the most important components of an integrated urban water management system. The necessary concepts of graphs were defined, the origin and the principle of graph algorithms used in modeling water management issues (Loop-By-Loop Cutting Algorithm, Hanging Gardens Algorithm, Tree Growth Algorithm, Dijkstra’s Algorithm, Genetic Algorithm, and Bayesian Networks Algorithm) were described. Their use in modeling the issues in stormwater, sanitary sewage and water distribution system was described. A complete list of scientific literature in this field was provided.

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Nawierzchnia przepuszczalna inwestycją w przyszłość

Chlipalski Krzysztof

Drogi Publiczne

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2020

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nr 1

41--46

PL

W artykule zostało opisane zagadnienie zagospodarowania przestrzennego jako „miasta-gąbki”, wpisujące się w strategię zrównoważonego rozwoju. Omówiono szczegółowo koncepcję „miasta-gąbki” akumulującego wody deszczowe i oddającego wilgoć w czasie suszy. Jednym z innowacyjnych rozwiązań w tej koncepcji jest budowa nowych i rekonstrukcja starych nawierzchni w technologii nawierzchni przepuszczalnych dla wody.

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Problematyka utrzymania nawierzchni wodoprzepuszczalnej w klimacie chłodnym

Suchocka M., Magdziak M.

Drogownictwo

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2018

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nr 7-8

216--222

PL

Idea równoważonej gospodarki wodnej jest częścią ogólnej koncepcji zrównoważonego rozwoju. Niedobór wody w środowisku zurbanizowanym wywiera negatywny wpływ na funkcjonowanie ekosystemu miasta. Z kolei nadmiar wody objawiający się występowaniem podtopień lub powodzi może wyrządzić wiele szkód. Zarządzanie wodą na terenach zurbanizowanych jest dużym wyzwaniem w obecnych czasach, szczególnie po zmianie Ustawy Prawo wodne. Stosowanie nawierzchni o charakterze wodoprzepuszczalnym na terenach miejskich stanowi jedną z dobrych praktyk w zrównoważonym gospodarowaniu zasobami wodnymi. W czasach wzmożonej troski o zasoby wodne i ich jakość należy dążyć do sytuacji, kiedy woda pozostaje tam, gdzie spadła wraz z deszczem. Skuteczną realizację tego celu można uzyskać rozszczelniając obecne nieprzepuszczalne powierzchnie miejskie, w zamian stosując nawierzchnie wodoprzepuszczalne. Rozwiązanie to ma ogromny, niewykorzystany potencjał, ponadto nie generuje dodatkowych kosztów ani trudności w zastosowaniu, pomimo powszechnie panujących poglądów. W artykule zaprezentowano analizy przeprowadzonych badań w Durham, w trudniejszym niż w warunkach Polski klimacie, dotyczące zastosowania nawierzchni wodoprzepuszczalnych. Ich wyniki wskazują, że nawierzchnie przepuszczalne i porowate funkcjonują tam poprawnie i spełniają swoje zadania. Stąd wniosek, że w warunkach polskich mają one szansę zastosowania z takim samym powodzeniem.

EN

The idea of water management is part of the overall concept of sustainable development. The lack of water in the urbanized environment has a negative impact on the city’s ecosystem. On another hand, the water can cause the occurrence of flooding and a lot of damage. Water management in urbanized areas is an important challenge nowadays, especially after the amendment of the Water Law Act. The use of a water-permeable surface in urban areas is one of the good practices in the sustainable management of water resources. In times of increased care for water resources and their quality, we should aim for a situation where water stays where it fell with rain. The effective implementation of this objective can be achieved by using instead the impermeable urban surfaces, the water-permeable surfaces. This solution has a huge, untapped potential, moreover, it does not generate additional costs or difficulties in the application, despite common opinions. The paper presents analyses of the research conducted in Durham, in a climate more difficult than that of Poland, concerning the use of water-permeable pavements. The results show that permeable and porous pavement function properly and perform their tasks. Therefore, it is concluded that in Polish conditions they have a chance to be used with the same success.

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Nawierzchnie wodoprzepuszczalne jako element wspomagający zrównoważony rozwój – ekorozwój na terenach zurbanizowanych

Suchocka M., Magdziak M.

Drogownictwo

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2018

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nr 9

281--287

PL

Sprawne i jednocześnie racjonalne gospodarowanie posiadanymi zasobami, również wodą, to podstawa zrównoważonego rozwoju. Kwestie te są szczególnie istotne na terenach współczesnych miast. W artykule zaprezentowano analizy na temat nawierzchni wodoprzepuszczalnych oraz możliwości ich wykorzystania jako elementów infrastruktury miejskiej w celu redukcji zjawiska spływu powierzchniowego, polepszenia warunków siedliskowych roślin i drzew oraz ogólnej poprawy stanu środowiska, a także podniesienia jakości życia mieszkańców miast. Stosowanie nawierzchni przepuszczalnych wodę przeanalizowane zostało pod kątem zastosowania jako jednej z dobrych praktyk zrównoważonego rozwoju miast.

EN

Efficient and rational management of resources, specially including water, is the basis for sustainable development. These issues are particularly important on the modern cities areas. The article presents the analysis of water-permeable surfaces and the possibilities of their use as elements of urban infrastructure in order to reduce the surface runoff, improve the site conditions of plants and trees, and improve the quality of life of urban residents. The use of permeable water surface has been analyzed in terms of applying it as one of the good practices of sustainable urban development.

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W sprawie renaturyzacji miejskich wód

Łoś M. J.

Gospodarka Wodna

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2015

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Nr 3

86--91

PL

W numerze 5/2014 „Gospodarki Wodnej" ukazał się ciekawy artykuł „Dlaczego warto renaturyzować miejskie rzeki?" [2]. Okazał się on zachętą do podjęcia szerszej dyskusji, zwłaszcza że poruszana tematyka jest niewątpliwie istotna. Tekst nie jest polemiką z tezami autorek wspomnianego artykułu, a jedynie sygnalizuje możliwość szerszego spojrzenia na poruszane tematy.

EN

In the 5/2014 issue of Gospodarka Wodna, an interesting article was published, entitled "Why should we renaturise urban rivers?" [2]. It turned out to be an encouragement for a wider discussion, especially that the raised subject is undoubtedly important. The text does not constitute a polemic with the theses postulated by the authors of the aforementioned article; it only signals the possibility of a broader look at the subject brought up.