Temat: pressure membrane processes - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The use of Membrane Techniques in Swimming Pool Water Treatment
Autorzy:: Łaskawiec, E.
Madej, M.
Dudziak, M.
Wyczarska-Kokot, J.
Powiązania:: https://bibliotekanauki.pl/articles/952481.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: pressure membrane processes
ultrafiltration
nanofiltration
toxicological assessment
Opis:: The paper has determined the suitability of membrane processes (UF ultrafiltration, UF, and nanofiltration, NF) for the purification of waste streams, so-called backwash water, obtained from washing filtration beds in a swimming pool water system. The backwash water samples were taken from the circuits located in two indoor facilities with a different purpose of the basins. Moreover, the samples were characterized by varying quality, as described by selected physicochemical parameters (such as turbidity and ultraviolet absorbance UV254). Commercial membranes were used for the tests. The transport-separation properties of the membranes were determined based on the volumetric flux of the permeate. In addition, backwash water samples before and after the membrane process were subjected to toxicological assessment using the Microtox® screening test. The performed processes contributed to a significant reduction in turbidity and the value of UV254 ultraviolet absorbance, both in the ultrafiltration and nanofiltration processes. Whereas, significant differences in transport properties were noted within individual processes. A great influence of backwash water quality, including physicochemical parameters, on the course and results of the membrane filtration processes was demonstrated. In all of the nanofiltration cycles carried out, the removal of the toxic properties of the backwash water with respect to bacteria in the Microtox® test was found. Nevertheless, samples with high values of resultant physicochemical parameters after the ultrafiltration process were still characterized by high toxicity. Pressure membrane processes show high effectiveness in the removal of contaminants from backwash water. However, it is necessary to introduce supporting processes aimed at reducing membrane pore blocking by deposits and organic compounds, and in the case of ultrafiltration, assuring the safety of the purified stream in terms of the toxicological effect.
Źródło:: Journal of Ecological Engineering; 2017, 18, 4; 130-136
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Treatment of Pool Water Installation Washings in A Flocculation/Ultrafiltration Integrated System
Autorzy:: Łaskawiec, E.
Dudziak, M.
Wyczarska-Kokot, J.
Powiązania:: https://bibliotekanauki.pl/articles/123294.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: pressure driven membrane processes
washings
flocculation
waste streams treatment
ultrafiltration
Opis:: The article presents the possibilities of employing an integrated flocculation/ultrafiltration system in the treatment of washings generated upon the rinsing of filter beds in pool water installations. Single ultrafiltration process was used as a comparator. Flocculation was carried out using commercial dialuminium pentahydroxychloride solution widely used at pool facilities for the removal of contaminants in flocculation processes. The studies consisted in determination of correlations between the conditions of the flocculation process (variable doses of Al³⁺ ions: from 4 to 280 mg/L) and the transport/separation characteristics of ultrafiltration membranes. Flocculation was performed at different temperatures of washings i.e. 8, 21, and 30°C for each of the pre-defined doses. Ultrafiltration was highly capable of reducing the turbidity of washings and removing a large group of contaminants as determined by turbidimetry and UV₂₅₄ absorbance measurements. The studies revealed that the best transport/ separation characteristics of ultrafiltration membranes were obtained in a system in which ultrafiltration was performed following flocculation of washings carried out at 21°C using a 40 mgAl³⁺/L solution. The turbidity was reduced by ca. 99% and UV absorption was reduced by ca. 94% while the relative volumetric stream of the permeate increased by more than 35% (as compared to the filtration of washings in a single-process system). Membrane ultrafiltration significantly increased the quality of the waste stream consisting of washings from the pool water installation. Pre-processing of washings is required before ultrafiltration in order to limit the blocking of membrane pores. Flocculation may be one of such pre-processing methods.
Źródło:: Journal of Ecological Engineering; 2017, 18, 5; 96-103
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Oczyszczanie wody popłucznej z instalacji basenowej w jednostkowym membranowym procesie ultrafiltracji oraz w układzie zintegrowanym napowietrzanie-ultrafiltracja
Treatment of aqueous rinsing liquids of the pool water installation in a unit process of membrane ultrafiltration and in the airing-ultrafiltration integrated system
Autorzy:: Łaskawiec, E.
Dudziak, M.
Wyczarska-Kokot, J.
Powiązania:: https://bibliotekanauki.pl/articles/270649.pdf
Data publikacji:: 2016
Wydawca:: Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:: popłuczyny
woda basenowa
ultrafiltracja
ciśnieniowe procesy membranowe
oczyszczanie strumieni wód odpadowych
washings
pool water
ultrafiltration
pressure driven membrane processes
treatment of streams of wastewater
Opis:: W pracy przedstawiono możliwość wykorzystania membranowego procesu ultrafiltracji do oczyszczania popłuczyn z instalacji basenowych. Badania obejmowały proces jednostkowy ultrafiltracji oraz zintegrowany układ napowietrzanie-ultrafiltracja, który pozwolił na częściowe usunięcie zanieczyszczeń występujących w nadawie. Porównano membrany o zróżnicowanym materiale polimerowym oraz różnej wartości granicznej masy molowej cut-off. Określono wpływ zastosowanego procesu wstępnego na zdolności transportowo-separacyjne membran o różnych własnościach fizyczno-chemicznych. Uzyskano wysoką wydajność hydrauliczną we wszystkich prowadzonych filtracjach (w zakresie od 1,23·10^-5 do 1,40·10^-7 m³/m²·s). W zakresie usuwania mętności badane układy charakteryzowały się współczynnikiem usunięcia przekraczającym 90%. Odnotowano znaczące usunięcie grupy zanieczyszczeń opisanych przez wskaźnik ogólny, tj. absorbancję w nadfiolecie UV₂₅₄. Przeprowadzone badania wykazały możliwość wykorzystania ultrafiltracji do odzysku wody basenowej z popłuczyn poprocesowych.
The paper presents the possibility of using the membrane ultrafiltration process for the treatment of washings from pool water systems. The tests included a unit ultrafiltration process and airing-ultrafiltration integrated system which partly removed contamination from the feed material. Membranes of various polymere materials and molar mass cut-off were compared. This helped to determine the influence of the used initial process on transport and separation abilities of the membranes of different physical and chemical features. High hydraulic performance was obtained in all performed filtration actions (1.23·10^-5 ÷ 1.40·10^-7 m³/m²·s). In respect of fighting turbidity, all tested systems had a removal rate of more than 90%. It was also noted that a significant amount of contamination described by the general indicator, which is specific UV₂₅₄ absorbance, was removed. The tests proved that ultrafiltration can be used for recovery pool water from post-process washings.
Źródło:: Aparatura Badawcza i Dydaktyczna; 2016, 21, 4; 238-245
2392-1765
Pojawia się w:: Aparatura Badawcza i Dydaktyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ultrafiltration for Purification and Treatment of Water Streams in Swimming Pool Circuits
Autorzy:: Łaskawiec, E.
Dudziak, M.
Wyczarska-Kokot, J.
Powiązania:: https://bibliotekanauki.pl/articles/125442.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: swimming pool water
pressure driven
membrane processes
closed circuit
water systems
water treatment systems
water recovery
Opis:: The paper presents possible applications of pressure-driven membrane processes for treatment of swimming pool water and purification of waste streams – washings. Newly identified swimming pool water quality issues are presented that require a modernization of existing technologies. The studies used polymer membranes with the same particle distribution range (50000 Da), but made of different membrane-forming materials: polyvinylidene difluoride (PVDF) and polyether sulfone (PES) for purification of washings. The ultrafiltration process allowed obtaining a high turbidity reduction rate in washings (over 95%), and also a significant reduction of total organic carbon. The effectiveness of the PES membrane was reduced after the process commencement, whereas the separation capacity of the PVDF membrane increased during the studied filtration process. While setting the operational process parameters consideration should be given also to the resistance of used membranes to chlorine present in the swimming pool water. A prolonged exposure of the polyether sulfone membrane to chloride may have caused its gradual damage and degradation of its separation properties.
Źródło:: Journal of Ecological Engineering; 2018, 19, 3; 38-44
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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