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    Wyświetlanie 1-9 z 9
    Tytuł:
    Impact of runoff prediction on grey water footprint in a small agricultural catchment
    Autorzy:
    Hejduk, Leszek
    Hejduk, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/108592.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
    Tematy:
    grey water footprint
    water pollution level
    catchment
    Opis:
    According to Hoekstra et al. (2011) the water footprint within a geographic area is defined as the total freshwater consumption and pollution within the boundaries of the area. The grey part of the water footprint refers to pollution and is an indicator of the water volume needed to assimilate a pollutant load that reaches a water body. It is possible then, based on the grey water footprint to estimate if the water available in a river at a particular crosssection will be sufficient to maintain a water pollution level (WPL) below 100%. The crossing of 100% indicates that the waste assimilation capacity has been fully consumed in this particular catchment. In this paper, the grey water footprint from nonpoint source pollution has been calculated based on long-term hydrometrological data for the upper part of a small agricultural catchment (area of 23.4 km2 ) (Zagożdżonka River) in central Poland. Based on land use and the amount of fertilizers applied in the catchment, together with information about the natural concentration of nitrogen and phosphorus in the river, as well as maximum acceptable concentration, the water pollution level has been calculated for actual conditions. The estimation of future runoff decreases for the considered catchment (Banasik, Hejduk 2012) has been applied in order to estimate potential future water pollution levels. The calculation shows that, even when the management practices in this catchment remain as they are, including the current extensive crop production, the WPL of 100% will be exceeded in the year 2033 (for phosphorus) and 2043 (for nitrogen) due only to the decreasing availability of water.
    Źródło:
    Meteorology Hydrology and Water Management. Research and Operational Applications; 2019, 7, 1; 41-46
    2299-3835
    2353-5652
    Pojawia się w:
    Meteorology Hydrology and Water Management. Research and Operational Applications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of grey water irrigation on the cultivation of African spinach (Amaranthus hybridus)
    Autorzy:
    Nwaokobia, K.
    Ogboru, R. O.
    Idibie, C. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1112546.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    African spinach
    Agronomic and Growth parameters
    Amaranthus hybridus
    Grey water
    Irrigation
    Opis:
    Water is a limited resource, hence there is a need for its judicious use. This study was designed to investigate the utilization and the effects of grey water irrigation on the growth parameters of African spinach (Amaranthus hybridus) and its soil properties when planted in a green house. The irrigation treatment consisted of Tap water (TW) and grey water (GW) collected from Akindeko Hostel in Federal University of Technology, Akure. The vegetables were planted in five bucket samples for each irrigation treatment. The water samples were assessed to determine chemical properties, while soil samples were collected and analysed before irrigation application and after harvest. Crop morphology that includes the plant height, number of leaves and stem girth parameters were recorded weekly after emergence. Our results indicate that the grey water type has the highest chemical parameters. These included TSS, SAR, pH, HCO3ˉ, Ca2+, Mg2+, and Na+. What is more, soil pH decreased in all the soil samples after the different water applications, the lowest pH being from grey water. The sodium adsorption ratio (SAR) also decreased in all the irrigation treatments. In addition, the plant height, number of leaves and stem girth of the crop were affected by the water type used. Herein, the crop irrigated with grey water had the highest morphology parameters. Furthermore, soil chemical properties were significantly affected by the use of grey water, hence, appropriate wastewater treatment and water management practices have to be followed to remove the toxic elements that could be hazardous to human health when crops produced on them are consumed.
    Źródło:
    World News of Natural Sciences; 2018, 18, 2; 133-145
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Role of wastewater treatment plants in pollution reduction – evaluated by Grey Water Footprint indicator
    Autorzy:
    Stejskalová, Lada
    Ansorge, Libor
    Kučera, Jiří
    Čejka, Elžbieta
    Powiązania:
    https://bibliotekanauki.pl/articles/35546830.pdf
    Data publikacji:
    2022
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    grey water footprint
    Odra river basin
    pollution
    wastewater treatment plant
    water footprint assessment
    Opis:
    The study assesses the pollution discharged from 251 wastewater treatment plants (WWTPs) throughout the Odra river basin in the Czech Republic. The development of pollution production over a period of 15 years (2004–2018) together with a number of WWTPs in the Odra river basin were analyzed. The Grey Water Footprint (GWF) of discharged pollution was determined both in terms of individual size categories of WWTPs and in terms of the parameter that most affects the level of pollution. The share of the small WWTPs size categories (up to 2,000 PE) on the total GWF value of discharged pollution is only 8%, although these are the most numerous. The share of the WWTPs of the size category > 10,000 PE on the total GWF value of discharged pollution is 82%. Total phosphorus (at large WWTPs) and ammonium nitrogen (at small WWTPs) were identified as the key pollutants that most determine the value of the Grey water footprint of discharged pollution.
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2022, 31, 1; 26-36
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Water Footprint in Paper & Pulp Industry & its Impact on Sustainability
    Autorzy:
    Nandan, Abhishek
    Yadav, Bikarama Prasad
    Baksi, Soumyadeep
    Bose, Debajyoti
    Powiązania:
    https://bibliotekanauki.pl/articles/1182824.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Blue water footprint
    Green water impression
    Grey water footprint
    Water footprint
    paper and pulp Industry
    Opis:
    Unsustainable utilization of water assets conveys challenges these days identified with the generation periods of water devouring products, for example, pulp & paper. This industry is portrayed by noteworthy water utilization at every procedure venture of creation. This study concentrates on the water footprint appraisal of paper and pulp generation at a medium measured paper and pulp industry in Uttar Pradesh, India. Here, the evaluation depended on the creation chain outline. A framework limit was proposed to evaluate the water footprint at different procedure stages from the source to the last item and additionally the natural contacts with extraordinary spotlight on maintainability. Through this study water footprint accounting has been done and the outcomes were utilized to break down the supportability as far as, Blue water footprint, Grey water footprint and Green water impression for Kraft & White paper. Also, recommendations for reasonable practices have been touched upon.
    Źródło:
    World Scientific News; 2017, 64; 84-98
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristics of grey water filtration on polypropylene filters
    Charakterystyka filtracji wody szarej na filtrach polipropylenowych
    Autorzy:
    Mucha, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/388591.pdf
    Data publikacji:
    2015
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    grey water
    constant pressure filtration
    Ruth’s equation
    szara woda
    filtracja pod stałym ciśnieniem
    równanie Rutha
    Opis:
    In the paper the main characteristics of filtration process of grey water (obtained from the laundry) on polypropylene filter of various size of pores (5 ۰m and 20 ۰m) has been presented. In was found well applicability of Ruth’s equation for filtration process of grey water in constant pressure. It means that in presented studies process is due to the first stage of formation of so called wet filtration cake. Parameters of Ruth’s equation were determined. On their flow resistance involved in the filtration process: resistant of the filter medium Rf = 1.94 ۰ 1011 m–1 (filter FCPS 5) and Rf = 1.89 ۰ 1011 m–1 (filter FCPS 20) and the average specific cake resistance ۰0 for FCPS 5 = 4.84 ۰ 1012 m–2 and ۰0 for FCPS 20 = 4.35 ۰ 1013 m–2 were calculated. Because both filters are made from polypropylene their resistances Rf have similar values. However ۰0 of both filters differs by an order of magnitude. Filtration times are equal to 42.3 min and 22.1 min respectively. Efficiency of both filters versus time of filtration were presented on the figures. It was proved higher life time of the FCPS 20 filter.
    W pracy przedstawiono podstawową charakterystykę procesu filtracji wody szarej (otrzymanej z prania) na polipropylenowych wkładach filtracyjnych o różnym mikronażu (5 ۰m, 20 ۰m). Stwierdzono stosowalność równanie Rutha do procesu filtracji wody szarej, co świadczy o tym, że w podjętych badaniach przebieg procesu dotyczył pierwszej fazy – tzw. formowania mokrego placka filtracyjnego. Wyznaczono parametry równania Rutha oraz na ich podstawie obliczono wartości oporów przegród filtracyjnych oraz objętościowych oporów właściwych osadu. Filtr o mniejszym mikronażu (FCPS 5) wykazywał nieco większy opór przegrody filtracyjnej (Rf = 1,94 ۰ 1011 m–1) niż filtra o mikronażu wyższym FCPS 20 (Rf = 1,89 ۰ 1011 m–1). Niewielkie różnice w wartościach oporów wynikają z charakterystyki obydwu filtrów. Obydwa zbudowane są ze spienionego polipropylenu. Natomiast wartości obliczonych objętościowych oporów właściwych osadu różniły się o rząd wielkości ۰0 dla filtra FCPS 5: 4,84 ۰ 1012 m–2 i ۰0 dla FCPS 20: 4,35 ۰ 1013 m–2. Czasy filtracji wynosiły odpowiednio 42,3 min oraz 22,1 min. Oceniono również wydajność filtracji na obydwu wkładach filtracyjnych i przedstawiono je na wykresach w funkcji czasu, z których wynika dłuższa żywotność filtra FCPS 20.
    Źródło:
    Ecological Chemistry and Engineering. A; 2015, 22, 1; 39-50
    1898-6188
    2084-4530
    Pojawia się w:
    Ecological Chemistry and Engineering. A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of the water footprint in Poland and Ukraine
    Autorzy:
    Panasiuk, D.
    Suduk, O.
    Miłaszewski, R.
    Skrypchuk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/96206.pdf
    Data publikacji:
    2018
    Wydawca:
    Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
    Tematy:
    niebieski ślad wodny
    zielony ślad wodny
    szary ślad wodny
    woda wirtualna
    jedzenie
    blue water footprint
    green water footprint
    grey water footprint
    virtual water
    food
    Opis:
    The aim of the article is to compare the indices of water resources in Poland and Ukraine. The water footprint is an instrument which allows to link the consumption of water resources with the consumption of goods. The blue water footprint shows the consumption of water for production of goods, the green – the use of rainwater in agriculture and forestry and the gray – the amount of water necessary to assimilate pollution. Poland and Ukraine have different climates. The north-western part of Ukraine has a climate similar to Poland, i.e. moderate continental with an annual rainfall of 600 mm/ yr. Southern Ukraine is a grassland plain with warm continental and marine climate and an annual rainfall of 300 mm/yr. This generates a greater need of water for Ukrainian agriculture. The green footprint of Ukraine (2302 m3/cap/yr) is twice as high as that in Poland (1121 m3/cap/yr). As a result, the total water footprint of Ukraine (2881 m3/cap/yr) exceeds the total water footprint of Poland (1503 m3/cap/yr). Analysis of “virtual water” indicates that the total net export of water from Ukraine is 282 m3/cap/yr. At the same time, the net import of water to Poland amounts to 147 m3/cap/yr.
    Źródło:
    Ekonomia i Środowisko; 2018, 4; 112-123
    0867-8898
    Pojawia się w:
    Ekonomia i Środowisko
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of deposit layers formed on grey cast iron
    Autorzy:
    Gwoździk, Monika
    Powiązania:
    https://bibliotekanauki.pl/articles/2133931.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    water pipes
    grey cast iron
    deposits
    Opis:
    This paper presents the results of diagnostic examinations conducted on the water pipe made of grey cast iron that were operated in conditions for 260 thousand hours. The tube was exposed in a soil. The phase composition of the deposit layers formed on both sides of the tube walls (outside and inside) was examined using optical and confocal microscopy and X-ray diffraction. The obtained XRD test results showed that mainly -FeOOH) and γ-FeOOH is formed on the inside of the pipe wall. In turn, on the outside, in addition to the above-mentioned compounds, also SiO2 is formed. The results of these examinations have shown a higher degradation of pipe on the outer side. The arithmetic mean deviation of the profile from the mean line was 6.23 µm and 8.07 µm for the inner and outer side of the pipe wall, respectively. The work demonstrates the usefulness of material science, especially X-ray structure, topography and surface studies, in characterizing the degradation processes of layers formed on gray cast iron exploited in the water supply industry.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2022, 25(1); 107--115
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal variation of some soil structure indicators
    Autorzy:
    Korsunskaya, L.P.
    Sokolowska, Z.
    Hajnos, M.
    Jozefaciuk, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/24188.pdf
    Data publikacji:
    1995
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    soil structure
    polysaccharide
    indicator
    grey forest soil
    aggregation
    root weight
    seasonal change
    soil aggregate
    water retention
    Źródło:
    International Agrophysics; 1995, 09, 1
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The surface properties of humic acids extracted from chernozem and grey-brown podzolic soils
    Autorzy:
    Flis-Bujak, M.
    Ksiezopolska, A.
    Stawinski, J.
    Turski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/24614.pdf
    Data publikacji:
    1995
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    surface property
    humic acid
    Polska
    chemical structure
    soil
    loess
    grey-brown podzolic soil
    water
    black earth
    Polish soil
    adsorption
    Źródło:
    International Agrophysics; 1995, 09, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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