Temat: system quality - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of Water Age and Flushing of the Water Supply Network of the Pressure Reduction Zone
Autorzy:: Świętochowska, Martyna
Bartkowska, Izabela
Powiązania:: https://bibliotekanauki.pl/articles/2202171.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: water distribution system
water age
water quality
flushing water system
pressure zone
Opis:: The water of appropriate quality introduced in the water system changes its chemical properties. Depending on the chemical properties of water and pipe materials, various phenomena may occur, e.g. corrosion, and biofilm structure. The decreasing water demand in existing water systems leads to a reduction in the water flow velocity in the pipes. Accordingly, the age of the water in the system increases. It is especially visible at connections and long sections of the network. The deteriorating water quality along with the elapsing time of its stay in the pipes makes it necessary to perform appropriate measures, e.g. flushing the network. Water supply services usually perform them intuitively. The choice of flushing sites, times, or flow rates is not measured and verified. The age of the water and the efficiency of flushing can be simulated in computer programs. EPANET provides tools for such simulations. The research aimed to check the effects of flushing the network and the age of water in the pressure reduction zone. This is a case that is particularly prone to the increasing age of water. The research has shown that the network flushing sites used so far contribute to the exchange of water in the main water pipes. The simulations showed the need for the additional flush in new places, and in the tested case, the age of the water in the pipes is as much as the intervals between subsequent rinses.
Źródło:: Journal of Ecological Engineering; 2022, 23, 10; 229--238
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evaluation of Stormwater System Influence on the River Using Algae
Autorzy:: Babko, Roman
Szulżyk-Cieplak, Joanna
Danko, Yaroslav
Duda, Sylwia
Kirichenko-Babko, Marina
Łagód, Grzegorz
Powiązania:: https://bibliotekanauki.pl/articles/123804.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: stormwater system
river
water quality
bioindication
algae environmental indices
Opis:: One of the widespread sources of river pollution is the wastewater coming from both wastewater treatment plants and the stormwater system. Wastewater can vary significantly in composition and concentration of substances introduced into water bodies. Municipal effluents may contain significant amounts of organic matter and ammonia. Storm drains are diverse in composition and depend on the nature of the surface from which the water collects, but carry more suspended solids and less nutrients. The research was aimed at assessing the effect of surface runoff collected by the stormwater system from the territory of the city of Lublin on the Bystrica River using popular environmental indices, calculated on the basis of periphytonic algae species abundances: species number, Shannon’s H, rarefied species number, Pielou’s evenness, trophic diatom index (TDI). It was observed that the correspondence between a species diversity and the quality of the environment is not always straightforward. Therefore, the periphytonic algae diversity increases under the influence of runoff, as evidenced by the Shannon index. Nevertheless, pronounced changes are noted in the structure of the algal community, as shown by the Pielou index and NMDS. However, these changes in the structure are invisible if the trophic diatom index (TDI) is relied upon.
Źródło:: Journal of Ecological Engineering; 2020, 21, 2; 214-221
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Assessment of Physicochemical Characteristics of Surface Water in the Full-Dyke and Semi-Dyke Systems: A Case Study
Autorzy:: Khanh, Huynh Cong
Nam, Tran Sy
Powiązania:: https://bibliotekanauki.pl/articles/2173265.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: An Giang province
full-dyke system
semi-dyke system
surface water quality
Opis:: The present study aimed to assess the physicochemical characteristics of surface water in the full-dyke (FD) and semi-dyke (SD) systems of the An Giang province. Water samples were collected in both seasons in 2019 (1) the first monitoring phase in the dry season (April) and (2) the second monitoring phase in the rainy season (October). At each season, the surface water samples were collected at 15 sites in the FD system and 15 sites in the SD system to analyze the water quality parameters. The results showed that the concentrations of DO, COD, BOD, TSS, NO3-, NH4+, TKN, PO43- and TP parameters in the FD system were higher than in the SD system and there was a significant difference (p<0.05), except the value of pH and DO in the dry season. The DO, COD, BOD5 and TSS concentrations in the FD system tended to exceed the Vietnamese standard threshold (QCVN 08:2015/BTNMT, column B1), but in the SD system, these values were within the allowable limits of Vietnamese Standard. Other parameters, such as NO3-, NH4+, TKN, PO43- and TP exceeded the threshold of the Vietnamese standard in both systems. The results of this study provide the scientific information on water pollution inside the FD system. Therefore, it was expected that the local government of the An Giang province should have long-term strategies to manage the FD system to improve the water quality inside the FD system.
Źródło:: Journal of Ecological Engineering; 2022, 23, 7; 10--19
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Assessment of Surface Water Quality in the Hau Giang Province Using GIS and Statistical Approaches
Autorzy:: Thuan, Nguyen Cong
Powiązania:: https://bibliotekanauki.pl/articles/2173356.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: GIS
geographical information system
multivariate statistics
water quality index
water supply
Opis:: The study aimed to assess the surface water quality in the Hau Giang province in 2021 at 44 locations (with a frequency of 5 times per year) using Principal Component Analysis (PCA), Cluster Analysis (CA) and GIS. Surface water quality was compared with the national technical regulation on surface water quality (QCVN 08-MT:2015/BTNMT, column A1) and Water Quality Index (WQI). The results showed that the surface water quality parameters of total suspended solids, organic matters, nutrients, coliform, and Fe far exceeded the allowable limits, while the Cl-, color, and CN- parameters were within the allowable limits of QCVN 08-MT:2015/BTNMT, column A1. The values of WQI showed that the water quality of the Hau Giang province ranged from poor to excellent. The water quality at the Vam Cai Dau and Hau River areas could only be exploited for water supply, but appropriate treatment is needed. CA divided the monitoring months into three distinct clusters and reduced the sampling sites from 44 to 33 locations, reducing 25% of monitoring cost per year. PCA revealed three main factors which could explain 69.0% of the variation in water quality. The water pollution sources were mainly industrial and agricultural discharges, domestic and urban activities, transportation activities, salinity, hydrological conditions and water runoff. The current findings provide useful information which support local environmental managers and water supply companies for safe and sustainable.
Źródło:: Journal of Ecological Engineering; 2022, 23, 9; 265--276
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The Use of Hydrophytes for Additional Treatmnet of Municipal Sewage
Autorzy:: Pichura, Vitalii
Potravka, Larisa
Ushkarenko, Viktor
Chaban, Viktor
Mynkin, Mykola
Powiązania:: https://bibliotekanauki.pl/articles/2086397.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: water quality
sewage
treatment system
Eichhornia crassipes
Lemna minor
pollutant
water treatment
Opis:: At the current stage of discharge and treatment of municipal sewage and other types of wastewater in the territory of Ukraine, traditional technologies of biological treatment in aero-tanks by the process of aerobic oxidation involving active silt characterized by low efficiency are largely used. It was established that biological treatment and additional treatment of sewage involving hydrophytes are efficient. The research on wastewater quality and the efficiency of sewage treatment was conducted in three phases: Phase 1 – “the quality before treatment”, Phase 2 – “the quality after mechanical-biological treatment” at the existing municipal treatment plants, Phase 3 – “the quality after additional treatment by hydrophytes”. In order to determine the efficiency of using hydrophytes additional treatment, Eichhornia crassipes (water hyacinth) and the perennial aquatic plant Lemna minor were planted in one treatment pond. The results of the experiment made it possible to determine high efficiency of using hydrophytes for additional sewage treatment. In particular, the efficiency of additional treatment in the treatment ponds removing the residue of suspended pollutants for 40 days was 32%, toxic salts – 13.0–23.0%, oil products – 30.0%, biogenic substances – 68.5–83.3%. It caused a drop in the values of chemical and biological oxygen demand for 5 days by 89.6% and 61.2%, respectively. The efficiency of sewage treatment removing toxic salts and oil products reached 97.7%, whereas in the case of mineral and organic pollutants – up to 99%. That contributed to a considerable increase in the wastewater quality by the criteria for fisheries. In particular, high nutritional value of Eichhornia crassipes and Lemna minor allowed obtaining 12.5 tons of hydrophyte wet mass that can be used as green manure, feeds for farm animals, poultry and fish.
Źródło:: Journal of Ecological Engineering; 2022, 23, 5; 54--63
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Analiza skutków łączenia lokalnych sieci wodociągowych
Results analysis of connection local water distribution system
Autorzy:: Sowiński, J.
Srogosz, M.
Powiązania:: https://bibliotekanauki.pl/articles/399959.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sieć wodociągowa
system dystrybucji wody
jakość wody
wiek wody
network hydraulics
water distribution system
water age
water quality
Opis:: W pracy przedstawiono przykład wykorzystania programu EPANET opracowanego i udostępnianego przez U.S. Environmental Protection Agency do symulacji pracy sieci wodociągowej. Przedstawiono trzy warianty obliczeń symulacyjnych uwzględniających zarówno stan obecny sieci jak i po jej modernizacji. Modernizacja sieci polegała na połączeniu dwóch niezależnych wodociągów oraz dostosowania systemu zasilania w wodę do aktualnych potrzeb. W wyniku przeprowadzonych obliczeń stwierdzono, że wydajność działającego dotychczas systemu pompowego nie będzie wystarczająca do zasilania połączonej sieci; wskazano także najkorzystniejszy wariant modernizacji. Wartości rozbiorów węzłowych oraz ich dobowe histogramy zostały wyznaczone na podstawie rzeczywistych danych pochodzących z przedsiębiorstwa wodociągowego.
The study demonstrates the example of application of the EPANET program developed and made available by the U. S. Environmental Protection Agency to simulate the work of water-pipe network. There are presented three variants of simulating calculations comprising both the present state of the network and the state after its modernization. Modernization of the network was based on the combination of both independent water distribution system network and adjustment of the system of water-supply for actual needs. As a consequence of calculations it was stated that the efficiency of a pump system operating so far will not be sufficient to supply the combined network; the most beneficial variant of modernization was also proven. The values of nodes and their daily histograms have been determined based on the actual data originating from the water-supply company.
Źródło:: Inżynieria Ekologiczna; 2011, 26; 237-246
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The Study of Adsorption Ability of Natural Materials of the Tyumen Region
Autorzy:: Pimneva, L.
Zagorskaya, A.
Powiązania:: https://bibliotekanauki.pl/articles/123127.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: natural sorbent
copper ions
adsorption isotherms
water supply system
drinking water quality
Opis:: The sorption of divalent copper, natural sorbents of kaolinite and montmorillonite clays and carbon sorbent was studied on model solutions under static conditions. Quantitative characteristics of sorption process of copper ions were obtained. The degree of extraction of copper ions from solution was investigated, depending on the concentration of the initial solution and the weight ratio of the sorbent and volume of treated solution. The magnitude of sorption increases along with the increase in the volume of copper sulfate solution with a concentration of 0.02 M at a constant sample of sorbents. A higher carbon sorption capacity of the sorbent, in relation to ions of copper, was compared to kaolinite and montmorillonite clay. A higher sorption capacity of the carbon sorbent with respect to copper ions is established in the comparison with kaolinite and montmorillonite clay.
Źródło:: Journal of Ecological Engineering; 2018, 19, 3; 225-228
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: CFD Analysis of an Innovative Wind Tower Design with Wind-Inducing Natural Ventilation Technique for Arid Climatic Conditions
Autorzy:: Obeidat, Bushra
Kamal, Hammam
Almalkawi, Amal
Powiązania:: https://bibliotekanauki.pl/articles/1839069.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: wind tower
computational fluid dynamics
natural ventilation
wind pressure fluctuation
indoor air quality
passive ventilation system
Opis:: Wind towers are passive architectural elements traditionally used to ventilate buildings in the Middle East’s hot and arid regions. Some recent design initiatives in Jordan are particularly interested in using passive systems for natural ventilation. This paper focuses on an innovative wind tower design as a passive ventilation system, which will be integrated into a train station design in Aqaba, Jordan to improve the air quality in indoor spaces and reduce the cooling loads. The design uses wind-induced effects as the motivating forces to improve natural ventilation. The study optimized the wind tower and evaluated its performance using Autodesk Computational Fluid Dynamics (CFD) simulations and Grasshopper Rhino plug-ins. Airflow and distribution through the tower were analyzed using the CFD model. Grasshopper definitions were used to examine the tower efficiency in lowering the indoor air temperature. Simulations indicated the potential of the proposed wind tower to reduce the temperature by 6.164°C and supply the interior space with the required fresh air rates. This article outlines how wind towers can be used in contemporary architecture and incorporate the simulation methods to pave the way for architects to effectively validate the performance of their design proposals at the early design stage.
Źródło:: Journal of Ecological Engineering; 2021, 22, 2; 86-97
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Nieczystości płynne ze zbiorników bezodpływowych jako źródło zanieczyszczeń mikrobiologicznych wód podziemnych
Liquid waste from septic tanks as a source of microbiological pollution of groundwater
Autorzy:: Nowak, R.
Imperowicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/400687.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: kanalizacja bezodpływowa
zanieczyszczenia mikrobiologiczne
jakość wód podziemnych
sewage holding tank system
microbiological pollutions
groundwater quality
Opis:: W Polsce ogromnym problemem jest zanieczyszczenie środowiska gruntowo-wodnego przez nieczystości płynne, pochodzące ze zbiorników bezodpływowych. Dotyczy to szczególnie terenów wiejskich. Negatywne zmiany stwierdzane są zarówno w sąsiedztwie nieszczelnych zbiorników, z których zagęszczone i zagniłe ścieki infiltrują do gruntu, jak i w wodach powierzchniowych i gruntach ornych, do których trafiają nieczystości z opróżnianych zbiorników. W pracy, na przykładzie wybranej gminy, przedstawiono skalę występowania procederu niekontrolowanego odprowadzania ścieków bytowych do środowiska. Zaprezentowane dane porównano z wynikami oceny jakościowej wód podziemnych, ujmowanych w tej samej gminie do celów wodociągowych. W znaczącej części studni woda nie była bezpieczna pod względem sanitarnym, bowiem stwierdzono w niej obecność m.in. zanieczyszczeń mikrobiologicznych. Wśród oznaczonych mikroorganizmów dominowały organizmy wskaźnikowe zanieczyszczenia wód ściekami bytowymi. Problemy z jakością wody zostały odnotowane na ujęciach, zlokalizowanych w pobliżu posesji, wyposażonych w zbiorniki bezodpływowe lub w miejscach, do których w niekontrolowany sposób trafiały ścieki z opróżnianych zbiorników. W ten sposób wykazano, że istnieje związek między niewłaściwie prowadzoną gospodarką ściekową a jakością wód podziemnych, ujmowanych do celów wodociągowych.
Pollution of soil and water environment by liquid waste originating from septic tanks is a huge problem in Poland. This applies especially to rural areas. Negative changes are observed both in the vicinity of the leaking tanks, from which concentrated and rotten sewage infiltrates into the ground, and in surface water as well as arable land, to which impurities from the emptied tanks are discharged. The paper presents the scale of the practice of uncontrolled domestic sewage discharge into the environment on the example of selected municipality. Presented data were compared with the results of the qualitative assessment of groundwater, which is collected in the same municipality for waterworks. In a significant number of wells, water was not safe in sanitary terms, as the presence of microbiological contamination was recorded. Among determined microorganisms, the indicator organisms of domestic waste pollution prevailed. Water quality problems have been reported at intake points located near the properties equipped with septic tanks or in places, to which sewage from emptying septic tanks were transferred in an uncontrolled manner. In this way it has been shown that there is a relationship between improperly maintained wastewater management and groundwater quality collected for the purpose of water supply.
Źródło:: Inżynieria Ekologiczna; 2016, 47; 60-67
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Wpływ zmiany użytkowania gruntu na jakość wód obszaru zdrenowanego w Lidzbarku Warmińskim
Influence of the change of using soil to the water quality on the drainage systems in object Lidzbark Warmiński
Autorzy:: Cymes, I
Szejba, D.
Szymczyk, S
Świtajska, I
Olba-Zięty, E
Powiązania:: https://bibliotekanauki.pl/articles/949961.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: jakość wody
wody gruntowe
odpływy drenarskie
oczka wodne
water quality
groundwater
outflows from drainage system
small ponds
Opis:: Badaniami objęto wody gruntowe, odpływające siecią drenarską oraz zretencjonowane w oczku wodnym zlokalizowanym na obszarze użytkowanym rolniczo, w części działu drenarskiego obiektu Lidzbark Warmiński na Równinie Sępopolskiej. Badania wykonywano w latach 1998–2000 po zdrenowaniu użytków zielonych oraz w latach 2008–2010, po transformacji gruntu obsianego pszenicą ozimą. Celem badań było określenie zmian jakości wód po zmianie sposobu użytkowania terenu. Badania wykazały, że na skutek zmiany sposobu użytkowania ziemi i zaniechaniu nawożenia mineralnego w oczkach wodnych stwierdzono zmniejszenie stężeń większości składników mineralnych, oraz zwiększenie wartości pH, stężeń potasu, magnezu siarczanów i wodorowęglanów. W wodach gruntowych zanotowano wzrost stężeń mineralnych form azotu, fosforu fosforanowego, potasu, magnezu oraz żelaza ogólnego i wodorowęglanów, zaś zmniejszenie stężeń wapnia, sodu, siarczanów i chlorków. W wodzie drenażowej nastąpił wzrost stężeń większości oznaczanych składników, oprócz azotu amonowego i chlorków
The study included groundwater outflow drainage systems and collected in the pond located at the agricultural use area in the portion of the drainage facility Lidzbark Warminski located on the Sępopolska Plain. The study was performed in two periods: the first one was in 1998–2000 (just after was made drainage), in which the discussed area was used as pasture, and the second in 2008–2010, in which after plowed of the soil was cultivated winter wheat. The aim of the study was to determine changes in water quality after the change of the way of land use. Examinations showed that as a result of the change of the way of using the area and ceasing of mineral fertilizing in waters of the pond was a reduction in the concentrations of the most mineral components, but an increase of pH reaction and concentrations of potassium, magnesium of sulfates and bicarbonates. In groundwaters observed increased the content of concentrations of mineral forms of nitrogen, phosphatic phosphorus, potassium, magnesium, general iron and bicarbonates, and a reduction in the concentrations of calcium, sodium, sulfates and chlorides. However in the water which outflow from drainage pipelines system from the research area was an increase of concentrations most of the determined substances, apart from ammonia nitrogen and chlorides.
Źródło:: Inżynieria Ekologiczna; 2014, 37; 80-88
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: The Influence of Household Wastewater Treatment Plants with Drainage System on the Quality of Groundwater in the Lublin Province, Poland
Autorzy:: Jóźwiakowski, Krzysztof
Marzec, Michał
Listosz, Agnieszka
Gizińska-Górna, Magdalena
Micek, Agnieszka
Pytka, Aneta
Pochwatka, Patrycja
Rybczyńska-Tkaczyk, Kamila
Powiązania:: https://bibliotekanauki.pl/articles/1839295.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: household wastewater treatment plants
drainage system
water quality
wells
groundwater
physical pollutants
chemical pollutants
microbiological pollutants
Opis:: The work presented the assessment of household wastewater treatment plants with drainage systems on the quality of groundwater in dug wells and deep water wells in the area of 3 selected communes (Drelów, Dębowa Kłoda and Urszulin), located in the Lublin province in south-eastern Poland. The investigations of the physicochemical composition of water from selected 28 dug wells and 2 deep water wells were conducted from June to July 2020, involving 9 measurement series. The microbiological studies consisted in 4 measurement series. The composition of the wastewater from primary settling tanks discharged to soil via drainage systems located in the vicinity of considered wells was also examined on a single occasion. The studies indicate that the water from wells are significantly polluted with ammonia, nitrites, as well as compounds of natural origin: iron and manganese. The presence of microbiological pollution of fecal origin was noted. The studies clearly indicate the possible pollution of the analyzed well waters with domestic sewage discharged to soil via drainage systems. Therefore, it necessary to take the actions aimed at improving the quality of groundwater in the Lublin province, including limitation of drainage systems, especially in the areas with unfavorable subsurface and hydrological conditions as well as low water supply coverage. The need to introduce changes in legal regulations and strategies for the development of technical infrastructure in counties, favoring the most efficient, as well as simple and inexpensive technologies, was indicated.
Źródło:: Journal of Ecological Engineering; 2021, 22, 3; 18-39
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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