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    Wyświetlanie 1-11 z 11
    Tytuł:
    Characteristics of natural organic matter removed from water along with its treatment
    Autorzy:
    Urbanowska, A.
    Kabsch-Korbutowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/206888.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    biogeochemistry
    biological materials
    chemical water treatment
    Mokry Dwór
    WTP
    biogeochemia
    materiały biologiczne
    chemiczne uzdatnianie wody
    Opis:
    The object of this study was to examine the nature of natural organic matter (NOM) removed on each stage of water treatment train used in the “Mokry Dwór” Wrocław Water Treatment Plant (WTP) and to compare obtained results with water treatment efficiencies achieved with the use of membrane ultrafiltration, ion-exchange and UF/ion-exchange integrated processes. In the experiments fractional analysis with the use of polymeric resins (DAX-8, XAD-4 and IRA-958) was used. Obtained results have shown that most (56%) of the raw water NOM was found in fraction characterized by presence of humic and fulvic acids (VHA and SHA fractions). VHA fraction made the most of DOC removed in examined water treatment train and coagulation was mainly responsible for this effect. Integrated process consisting of MIEX®DOC ion exchange and PES 10 kDa ultrafiltration turned out to be very effective at high molecular weight hydrophobic compounds removal from water being much less efficient with hydrophilic compounds.
    Źródło:
    Environment Protection Engineering; 2016, 42, 2; 183-195
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of polyaluminium chlorides overdosage on effectiveness of coagulation and filtration
    Autorzy:
    Gumińska, J.
    Kłos, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207707.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    chemical water treatment
    chlorine compounds
    coagulation
    manganese
    manganese removal
    water treatment
    chemiczne oczyszczanie wody
    związki chloru
    koagulacja
    mangan
    usuwanie manganu
    uzdatnianie wody
    Opis:
    PACls overdosage has negative impact on the operation and the effectiveness of coagulation and separation of post-coagulation suspensions. The results of the pilot study revealed that a sharp increase of fine particles was observed at reaching and exceeding the isoelectric point. Based on the full-scale research with PACl_1 (B = 2, 4) it was stated that these particles did not cause deterioration of standard quality parameters (turbidity, absorbance UV254, colour, TOC, CODMn) of water purified in conventional treatment. However, the particles not retained in sedimentation tanks supplied rapid filters and caused their overloading, and hence shortening of filtration cycles.
    Źródło:
    Environment Protection Engineering; 2015, 41, 1; 5-14
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimizacija khimicheskikh komponentov pri reagentnojj obrabotke stochnykh vod
    Optimization of chemical components at reagent treating of wastewater
    Autorzy:
    Ehpojan, S.
    Movchan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/77671.pdf
    Data publikacji:
    2015
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    experimental study
    optimization
    chemical component
    waste water
    waste water cleaning
    energy cost
    waste water treatment
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 6
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ochistka stochnykh vod predprijatijj po proizvodstvu koncentrirovannogo jablochnogo soka
    Wastewater treatment of concentrated apple juice production plants
    Autorzy:
    Koval'chuk, V.
    Koval'chuk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/77731.pdf
    Data publikacji:
    2015
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    apple juice concentrated
    chemical technology
    biological treatment
    waste water
    experimental research
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 6
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Natural treatment of woolen processing industry wastewater
    Autorzy:
    Qurashi, S.
    Sahu, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/10942.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    waste water
    natural treatment
    woolen processing industry
    waste water treatment
    environment protection
    public health
    industrial waste water
    chemical oxygen demand
    biological oxygen demand
    Opis:
    Wastewater treatment is becoming ever more critical due to diminishing water resources, increasing wastewater disposal costs, and stricter discharge regulations that have lowered permissible contaminant levels in waste streams. The ultimate goal of wastewater management is the protection of the environment in a manner commensurate with public health and socio-economic concerns. The aim of our study is to use natural occurring plant (Pistia stratiotes) to reduce the chemical oxygen demand and color from the industrial waste water. It was found that 120 mg/l of Chemical oxygen demand and 85 mg/l of color reduction was observed with Pistia stratiotes.
    Źródło:
    International Letters of Natural Sciences; 2014, 05
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Yemeni Natural Zeolite (Al-Ahyuq Area) and its Environment Applications: A Review
    Autorzy:
    Alshameri, Aref
    Xinghu, Wei
    Dawood, Ammar Salman
    Xin, Chen
    Yan, Chunjie
    Assabri, Amer M.
    Powiązania:
    https://bibliotekanauki.pl/articles/125297.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    natural Yemeni zeolite
    Al-Ahyuq area
    mineralogical
    chemical composition
    environment application
    water treatment
    Opis:
    This research characterizes a natural zeolitic-rich tuff from Yemen (Al-Ahyuq area) and its potential in environmental applications. A total of 40 zeolite samples of Al-Ahyuq area were selected and fully characterized by a variety technique to obtain the mineralogical and physicochemical parameters. Our results show that the purities of zeolite minerals range from 78 to ~100% zeolite. Clinoptilolite and mordenite are the major mineral zeolite whereas heulandite and stilbite occur in minor amounts present in the zeolite deposit. Accessory minerals include quartz, illite, mica, feldspar, kaolinite, and smectite. In addition, the chemical compositions of Al-Ahyuq zeolitic tuffs are found to be comparable with other zeolites compositions of high economic value in the world. Moreover, its environment application was also discussed in this paper.
    Źródło:
    Journal of Ecological Engineering; 2019, 20, 4; 157-166
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kinetics of oxidation of manganese by potassium permanganate and chloride in the Velekinca water treatment plant, Kosovo
    Autorzy:
    Beluli, Valdrin M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1844416.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    chemical reactions
    chlorine Cl2(g)
    groundwater
    manganese
    oxidation
    speed reaction
    water treatment plant
    Opis:
    Our scientific research is based on oxidation reactions and monitoring of chemical reaction kinetics in the Velekinca groundwaters plant in Gjilan municipality, Kosovo. The GW of this plant contains high concentration of manganese so we need to use potassium permanganate (KMnO4) as one of the most power oxidants in the water treatment plant. In our research the high concentration of Mn in groundwaters is 0.22–0.28 mg∙dm–3 and this concentration is not in accordance with the WHO. Chlorine is one of the most common disinfectants used in the water treatment industry because it has a low cost and immediate effect on the destruction of microorganisms, the concentration of chlorine (Cl2) in our research is 0.1–0.32 mg∙dm–3. The speed of chemical reactions in the technology of GW is extremely important because sometimes in the elimination of chemical pollutants using oxidizing agents often form intermediate species. The speed of reactions indicates how fast chemical bonds are formed in the creation of a product, and this depends on the rate of reaction (XA). The focus for the research is to study the potassium permanganate and chlorine gas reactions in water if it forms intermediate products (intermediate species) due to the high speed of reactions. Scientific research conclusion, intermediate species in the oxidation reactions of Mn and water disinfection with Cl2(g) it is impossible to cause a high rate of chemical reactions from the reaction rate (XA = 1%) to the reaction rate (XA = 99%). The maximum speed at the highest XA Cl2 is from 4.405∙10–11 to 8.87∙10–10 mol∙dm–3∙s–1, while at Mn is (2.030–4.034)∙10–7 mol∙dm–3∙s–1.
    Źródło:
    Journal of Water and Land Development; 2020, 47; 30-37
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    Analysis and assessment of technological processes of the Miedwie Lake surface water treatment plant for the city of Szczecin
    Analiza i ocena procesów technologicznych stacji uzdatniania wody powierzchniowej z jeziora Miedwie dla miasta Szczecina
    Autorzy:
    Wira, J.
    Wira, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/84845.pdf
    Data publikacji:
    2005
    Wydawca:
    Akademia Pomorska w Słupsku
    Tematy:
    technological process
    Lake Miedwie
    surface water
    water treatment plant
    Szczecin city
    protection zone
    lake water
    tributary
    raw water
    clean water
    water parameter
    water analysis
    water temperature
    chloride
    chemical oxygen demand
    oxidizability
    pH reaction
    alkalinity
    carbon dioxide
    Opis:
    Miedwie Lake is the biggest post-glacial lake of the West-Pomeranian Voievodship. At the same time it is the fifth of the largest lakes in Poland. As regards the geographical situation, Miedwie Lake is situated centrally between three big agglomerations i.e. Szczecin, Stargard Szczecinski and Pyrzyce (Fig. 1). The lake lies on the territory of three municipalities: Pyrzyce and Warnice in the District of Pyrzyce as well as Stargard Szczecinski in the District of Stargard (Rozmiarek 1983, Szyper 1990). At the moment, the reservoir is characterised with the regular, prolonged shape resembling an ellipse. Banks are shallow, regular and sometime very wet. The lake has the belt of the nearshore reaching locally tens metres far from the lake bank, what is the reason, together with the fact that the wind blows always here, that it is convenient for practising the various kinds of water sports. The lake area amounts to 3 527 ha; maximal depth – 43.8 m; average depth – 19.3 m; water capacity – 681.7 mln m3; shore-line length – 38.8 km; water level datum 14.1 m above sea level; maximal width 3.16 km; maximal length 16.2 km. The lake’s bottom is the lowest situated area on the territory of Poland.
    Ujecie wody „Miedwie” powstało w roku 1976. Do tego czasu wody jeziora odpowiadały pierwszej klasie czystości. Jednakże jakość wody zaczęła się pogarszać już po rozpoczęciu eksploatacji ujęcia, dochodząc aż do poziomu trzeciej klasy czystości. Przyczyną był brak oczyszczalni oraz PGR-y. Zanieczyszczenie zbiornika powodowało masowe śniecią ryb (siei miedwiańskiej), przy dnie pojawił się siarkowodór, masowo zakwitały glony. Dalsze pogarszanie się stanu jeziora groziło zamknięciem ujęcia wody oraz wyniszczeniem życia biologicznego w zbiorniku, jak również wokół niego. Spadek jakości wód jeziora spowodowany był kilkoma czynnikami: rolnictwo, baza rosyjska w Kluczewie, turystyka, dopływy jeziora, biomanipulacja wodami Miedwia.
    Źródło:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2005, 09
    1643-0115
    Pojawia się w:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Textile dye removal using experimental wetland ponds planted with common duckweed under semi-natural conditions
    Autorzy:
    Yaseen, D. A.
    Scholz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207752.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    waste water treatment
    Lemna-minor L
    wetlands
    chemical oxygen demand removals
    natural conditions
    oczyszczanie ścieków
    mokradała
    chemiczne usuwanie tlenu
    barwnik
    warunki naturalne
    Opis:
    The study assesses the performance of experimental wetland pond systems vegetated by Lemna minor L. (common duckweed or lesser duckweed) for textile azo dye removal. The objectives are to assess the influence of L. minor on water quality parameters, compare the dye and chemical oxygen demand (COD) removal of four dyes (Acid Blue 113, Reactive Blue 198, Direct Orange 46 and Basic Red 46) with each other, and monitor the effect of dye accumulation as a function of the relative growth rate (RGR) of L. minor. Findings indicate that the simulated shallow pond systems remove BR46 (low concentration) significantly (p < 0.05) higher than other dyes, and the ponds containing L. minor outperformed control ponds by around 51% in mean removal efficiency with a potential of L. minor for phytoremediation of approximately 13% efficiency.
    Źródło:
    Environment Protection Engineering; 2017, 43, 3; 39-60
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental contaminants of emerging concern: occurrence and remediation
    Autorzy:
    Prasad, Majeti Narasimha Vara
    Elchuri, Sailaja V.
    Powiązania:
    https://bibliotekanauki.pl/articles/31342696.pdf
    Data publikacji:
    2023
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    contaminants of emerging concern
    CECs
    health hazards
    chemical waste
    disposal
    sludge treatment
    water treatment
    bioremediation
    engineered organisms
    zagrożenie zdrowotne
    odpady chemiczne
    usuwanie odpadów
    osad ściekowy
    oczyszczanie wody
    bioremediacja
    organizmy inżynieryjne
    Opis:
    Certain contaminants are termed as emerging (Contaminants of Emerging Concern, CEC) since all aspects of these pollutants are not known and their regulation is not ununiform across the nations. The CECs include many classes of compounds that are used in various industries, plant protection chemicals, personal care products and medicines. They accumulate in waterbodies, soils, organisms including humans. They cause deleterious effects on plant animal and human health. Therefore, alternative greener synthesis of these chemicals, sustainable economic methods of waste disposal, scaling up and circular methods using sludge for removing the contaminants are innovative methods that are pursued. There are several improvements in chemical waste treatments using electro-oxidation coupled with solar energy, high performing recycled granular activated charcoal derived from biomass are few advances in the field. Similarly, use of enzymes from microbes for waste removals is a widely used technique for bioremediation. The organisms are genetically engineered to remove hazardous chemicals, dyes, and metals. Novel technologies for mining economically the precious and rare earth elements from e-waste can improve circular economy. However, there is additional need for participation of various nations in working towards greener Earth. There should be pollution awareness in local communities that can work along with Government legislations.
    Źródło:
    Chemistry-Didactics-Ecology-Metrology; 2023, 28, 1-2; 57-77
    2084-4506
    Pojawia się w:
    Chemistry-Didactics-Ecology-Metrology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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