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    Wyświetlanie 1-6 z 6
    Tytuł:
    Changes of the quality of activated sludge during the biological treatment of landfill leachate
    Autorzy:
    Pieczykolan, B.
    Płonka, I.
    Kosel, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207064.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    landfill leachates
    activated sludge
    municipal wastewaters
    zjawiska dyspersyjne
    ścieki komunalne
    osad czynny
    ciecz z nad osadu
    Opis:
    The effect of chemically pretreated landfill leachate on the properties of activated sludge has been investigated. The leachate was pretreated by a two-stage method consisting of coagulation and oxidation. The mixture of pretreated leachate (from 2.5 to 15 wt. %) and municipal wastewater was fed into a bioreactor. Results of the studies showed that the pretreated leachate contributed to the dispersion of the activated sludge flocs. As a result, a very low value of volume index (30 cm3gTS) and a significant turbidity of supernatant liquid were observed at the same time. The dispersion phenomenon was also confirmed by floc size distribution. An increase of the amount of small and very small flocs was observed.
    Źródło:
    Environment Protection Engineering; 2016, 42, 3; 33-42
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Failure of the side-stream deammonification process. Risk of violation of the WWTP effluent quality
    Autorzy:
    Janiak, J.
    Miodoński, S.
    Muszyński-Huhajło, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207349.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    activated sludge process
    effluents
    wastewater treatment
    water quality
    proces osadu czynnego
    ścieki
    oczyszczanie ścieków
    jakość wody
    Opis:
    Stable and efficient nitrogen removal is one of main goals of wastewater treatment. Applying deammonification, beyond many advantages, results in the risk of the WWTP effluent quality violation in case of the failure of the process. Then nitrogen load to activated sludge is increasing rapidly which could therefore lead to quality violation in activated sludge effluent. Simulation studies have been presented on the effect of deammonification failure on nitrogen removal performance in the case of a typical, medium sized WWTP (ca. 115 000 PE). The studies were based on the calibrated ASMI model of real WWTP and a fictional scenario of implementing deammonification and subsequent failure. Implementing deammonification enables SR T optimization of the sludge retention time (SRT) in its main line thanks to lower nitrogen load. Two scenarios have been shown, considering or not optimization of the SRT in WWTP. The results show that SRT optimization leads to decrease in nitrifier mass and raises difficult issues in appropriate nitrogen concentration in the effluent.
    Źródło:
    Environment Protection Engineering; 2018, 44, 2; 169-179
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of modernization of the water treatment system in a selected swimming pool
    Autorzy:
    Wyczarska-Kokot, Joanna
    Dudziak, Mariusz
    Lempart, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/208181.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    quality control
    swimming pools
    water quality
    kontrola jakości
    baseny
    jakość wody
    dezynfekcja wody basenowej
    Opis:
    Based on the analysis of the modernization activities of the pool water treatment technology in a selected indoor swimming pool, the results of water quality improvement have been presented. The analysis of water quality parameters, operating parameters and in-house research that has been carried out in this pool for many years allowed us to evaluate the effects of modernization on water quality improvement, with special consideration of chloramine content in pool water (as a disinfection by product). The results of the research have been analyzed in terms of the current sanitary and hygienic guidelines for swimming pools.
    Źródło:
    Environment Protection Engineering; 2019, 45, 1; 31-43
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    General characteristics of the quantity and quality of sewage sludge from selected wastewater treatment plants in the Świętokrzyskie Province
    Autorzy:
    Gawdzik, J.
    Długosz, J.
    Urbaniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207262.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    wastewater treatment
    heavy metals
    sewage pumping plants
    sewage sludge
    sewage treatment plants
    toxicity
    water treatment plants
    total nitrogen
    total phosphorous
    total phosphorus
    oczyszczanie ścieków
    metale ciężkie
    pompownia ścieków
    osady ściekowe
    oczyszczalnie ścieków
    toksyczność
    stałe substancje organiczne
    azot całkowity
    fosfor całkowity
    Opis:
    Five wastewater treatment plants from the Świętokrzyskie Province have been briefly described, and a general analysis of the composition and quantity of sewage sludge from the data objects has been conducted. The paper also presents various ways of management of sewage sludge. The authors analyzed sediments from the wastewater treatment plant for PE in the range of 15 000–99 999 located in Ostrowiec, Opatów, Starachowice, Skarżysko-Kamienna, and in Sandomierz. The sludge was characterized in terms of its quantity and quality, the content of heavy metals, total nitrogen, total phosphorous, and organic solids.
    Źródło:
    Environment Protection Engineering; 2015, 41, 2; 107-117
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Possibilities of reuse of treated wastewater for irrigation purposes in the Northern Jordan Valley
    Autorzy:
    Myszograj, S.
    Qteishat, O.
    Sadecka, Z.
    Jędrczak, A.
    Suchowska-Kisielewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207413.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    wastewater reclamation
    irrigation
    wastewater treatment
    water quality
    fresh water
    rekultywacja ścieków
    nawadnianie
    oczyszczanie ścieków
    jakość wody
    woda świeża
    Opis:
    The possibilities of treated wastewater (TWW) reuse for irrigation purposes in the Northern Jordan Valley have been described. As shown by the analysis of the data, the results indicate a wide non-compliance with the Jordanian Standard 983/2006. Most problematic parameters are BOD, COD, nitrogen content, TSS. TWW will be blended with fresh water prior to use in agriculture. The blended water quality was reviewed after mixing of fresh water with the existing TWW without plant improvements. In general if there are no WWTP upgrades, the blended water quality satisfies the requirements of the Jordanian Water Quality Guidelines.
    Źródło:
    Environment Protection Engineering; 2014, 40, 2; 17-31
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of ultrafiltration and nanofiltration processes for the elimination of three selected emerging contaminants: amitriptyline hydrochloride, methyl salicylate and 2-phenoxyethanol
    Autorzy:
    Benítez, F. J.
    Real, F. J.
    Acero, J. L.
    Casas, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/207379.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    COD
    municipal wastewater treatment plants
    water quality
    filtration process
    ChzT
    miejskie oczyszczalnie ścieków
    jakość wody
    proces filtracji
    Opis:
    Three emerging contaminants: amitriptyline hydrochloride (AH), methyl salicylate (MS) and 2-phenoxyethanol (PE) were treated by means of filtration processes for their elimination from ultrapure (UP) water in a first stage, and from three water matrices (surface water from a reservoir, and two effluents from two municipal wastewater treatment plants) in a second stage. For this purpose, ultrafiltration and nanofiltration membranes were used in a cross-flow laboratory equipment. The permeate fluxes at the steady state were determined, and the resistances to the permeate flux were established. It was found that the inherent resistance of the clean membranes provided a much larger resistance than the fouling resistance. The retention coefficients for each individual contaminant were evaluated, as well as the retention coefficients referred to three water quality parameters: absorbance at 254 nm, COD and TOC. These parameters provide the effectiveness of the filtration processes for the elimination of the organic matter present in the selected water matrices.
    Źródło:
    Environment Protection Engineering; 2017, 43, 3; 125-141
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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