Temat: urban discharge - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Environmental Protection and Improvement of Water Quality as a Factor in the Development of Tourism in the Erenik River
Autorzy:: Gashi, Bardha
Kuqi, Beke
Dreshaj, Adem
Powiązania:: https://bibliotekanauki.pl/articles/24201792.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: parameter
river
urban discharge
water analysis
water quality
Opis:: This paper examines the impact of urban discharges on the water quality of the Erenik River in the city of Gjakova, Kosovo which is the most of key factor in developing the tourism. The primary goal of this project-based research was to provide results through water analysis in order to show the impact of urban discharges on the water quality for the tourists coming. The research was carried out by taking water samples at the entrance and exit of the Erenik River, while the measured parameters of the analyses were: temperature, pH value, electrical conductivity, turbidity, permanganates, phosphorus; and chlorides. Due to the conditions, measurements were not performed for: biological and chemical expenditure, dissolved oxygen, and alkalinity of the water. In order to achieve reliable results, the experimental research model was used, applying the techniques and methods of water analysis during the period of November-December 2021. The analyzed water result and the final findings showed that urban wastes affect the water quality, in particular the pollution from the discharges in the river potentiating the condition in which the Erenik River is found.
Źródło:: Journal of Ecological Engineering; 2023, 24, 3; 333--340
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Impact of point source pollutants on the distribution of selected water parameters in the Vistula River in Puławy, Poland
Autorzy:: Jakubiak, Mateusz
Bojarski, Bartosz
Powiązania:: https://bibliotekanauki.pl/articles/2048571.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: point source pollutants
“Rozlewisko” reservoir
urban pollutants
wastewater discharge
water quality
water monitoring
watercourses
Opis:: Human activities have a complex and multidimensional impact on water quality. The concentration of inhabitants, production and services intensifies influence of urban agglomerations on water in rivers. Among many sources of surface water pollution, the most important are sewage discharges. The aim of the research was to determine the effect of point discharge of treated industrial and municipal wastewater on the distribution of selected water chemical parameters in the Vistula River in Puławy. The studies were carried out in 2018–2019. Samplings were collected in five sampling points and tested in the hydrochemical laboratory. The obtained data were statistically analysed to investigate differences between the sampling points. The negative impact of wastewater discharge on the water quality in the Vistula was found. However, the pollution level decreased with the flow of the river. The parameters tested at measurement point located 1200 m below the discharge approached the values recorded above the sewage outfall. The presented observations of changes in the concentration of pollutants indicate the self-purification capacity of a river. However, for each watercourse flowing through urbanized areas, it is an individual feature. It depends on a number of factors and requires regular monitoring studies taking into account hydrochemical analysis of watercourses.
Źródło:: Journal of Water and Land Development; 2021, 51; 50-55
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Application of membranes to treat natural and waste waters: new considerations to reduce fouling and increase recovery Up to 99%
Zastosowanie membran do oczyszczania wody i ścieków: nowe aspekty zmniejszenia zanieczyszczenia i zwiększenia odzysku do 99%
Autorzy:: Pervov, A.
Andrianov, A.
Gorbunova, T.
Powiązania:: https://bibliotekanauki.pl/articles/400299.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: ścieki bytowe
nanofiltracja
odwrócona osmoza
odzysk
regeneracja
domestic wastewater
fouling-free technologies
membrane fouling
nanofiltration
natural water treatment
open-channel module
reclamation
recovery
reverse osmosis
scaling
spiral wound module
urban surface water
zero discharge
Opis:: Survey shows that high operational costs of membrane facilities and large amounts of effluents are mainly attributed to fouling and scaling. Research of scaling and fouling mechanisms showed that these processes depend not only on hydraulic and hydrodynamic factors, but on membrane type, material and channel configuration as well. Operational parameters of different membrane configurations show that spiral wound modules demonstrate best hydraulic and hydrodynamic characteristics combined with lowest price. Main ways to develop new fouling-free techniques are outlined that require modified "open-chan-nel" spiral wound membranes. Elimination of "deadlocks" as a main cause of scaling and fouling provide new technological approach to develop water treatment techniques without pretreatment facilities and chemicals. Modification of channel provides possibility to reach high recoveries and high supersaturation values due to strong stability of calcium carbonate solutions. Membrane transport is not only purification instrument it is also a reactor to coagulate, concentrate and precipitate water constituents on membrane surface. Several examples of water treatment flow diagrams are presented to demonstrate principles of zero concentrate flow discharge. Coagulated suspended matter after membrane flushes is collected, sedimented and finally dewatered. The dewatered sludge contains averagely 0,8 per cent of initial water. Due to the use of an "open-channel" modules membrane brine flow could be concentrated by many times without a fear of scaling and added to the sludge. Thus the excessive salts and impurities could be withdrawn from water systems together with partially dewatered sludge. Similarly excessive calcium carbonate could be also concentrated in membrane modules and subsequently precipitated, sedimented and dewatered. Solution of fouling problems thus provides a new approach to save operational costs and to increase ecological efficiency of membrane water treatment tools.
Badania wykazują, iż wysokie koszty eksploatacji urządzeń z zastosowaniem membran i duże ilości odcieków są przypisywane zanieczyszczeniom i odkładaniu się kamienia. Procesy te zależą nie tylko od czynników hydraulicznych i hydrodynamicznych, ale także od rodzaju membran i materiałów użytych do ich budowy. Parametry pracy różnych membran wykazały najlepsze właściwości modułów spiralnych przy najniższej cenie. Przepływ przez membrany nie ogranicza się jedynie do oczyszczania, jest to także reaktor do koagulacji, zatężania i strącania. Zawiesina po procesie koagulacji z procesu czyszczenia membran jest poddana sedymentacji i odwadnianiu. Osad z odwadniania zawiera około 8% wody. Zastosowanie modułów o "otwartych kanałach" powoduje zmniejszenie zagrożenia zanieczyszczenia i odkładania się kamienia. Rozwiązanie problemu zmniejszenia zanieczyszczenia membran pozwoli zmniejszyć koszty pracy instalacji i spowoduje wyższy poziom ekologicznej efektywności narzędzi wykorzystujących technikę membranową.
Źródło:: Inżynieria Ekologiczna; 2011, 24; 17-31
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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