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    Wyświetlanie 1-3 z 3
    Tytuł:
    Suitability of sewage from the production of organic polymers for biological treatment
    Autorzy:
    Frąk, M.
    Zadura, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/101185.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    industrial sewage
    biological treatment
    biodegradability
    activated sludge
    Opis:
    The possibility of biological treatment of sewage from the production of organic polymers was assessed. The chemical quality of raw and treated sewage (CODCr, BOD5 , ammonia nitrogen, nitrate nitrogen, total suspension, pH, chlorides and sulfates) was analyzed. The level of reduction in the analysed sewage quality indicators (%), sewage biodegradability (α) and the technical efficiency of treatment (Psw) were determined. It was shown that the limited effectiveness of the treatment process results from the excessively high load of organic contaminants. The analysed sewage contains substances which do not biodegrade easily, negatively influencing the conditions for activated sludge processes in the bioreactor. The activated sludge is characterized by low biodiversity and has an insufficient structure. The treatment process requires an introduction of technological changes which will lead to a decrease in the load of sewage entering the bioreactor.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/3; 1593-1602
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of extraneous waters on the proportion of sewage pollution indices regarding its biological treatment
    Autorzy:
    Kaczor, G.
    Bergel, T.
    Bugajski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/59684.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    extraneous water
    proportion
    sewage
    pollution index
    biological treatment
    denitrification
    dephosphatation
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2015, IV/3
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of heavy precipitation on the infiltration and inflow into small sewage treatment plants in 2010
    Autorzy:
    Kaczor, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/60233.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    heavy rainfall
    infiltration
    inflow
    small sewage treatment plant
    sewage treatment plant
    sewer system
    weather
    treatment plant
    Malopolska voivodship
    Krakow city
    mechanical treatment plant
    biological treatment plant
    modernization
    Opis:
    The aim of the study was to determine the extent to which heavy rainfall, that occurred in 2010, affected the infiltration into the selected sewage treatment plants in the Małopolskie voivodeship. The research was conducted in four separate sewer systems, located in poviats adjacent to the city of Kraków, discharging sewage to mechanical-biological treatment plants with a capacity below 1000 m3•d-1. The amount of sewage and extraneous water in the average wet year (2008) were used as control. As a result of heavy precipitation in 2010 the sewer system A received 18 539 m3 more extraneous water than in 2008 (increase by 343%), the sewer sys-tem B - 22 822 m3 (increase by 163%), the sewer system C - 109 715 m3 (increase by 248%) and the sewer system D - 30 796 m3 (increase by 303%). Heavy precipitation in 2010 caused the increase of infiltration and inflow by 264% on average in all studied sewer systems compared to the average wet year. As the result of precipitation, whose annual total in 2010 was higher by 65% than the normal value in 2008, there was an increase in the annual share of extraneous water from 5.3 to 19.7% depending on the facility. The volume of extraneous water, which was discharged into the studied treatment plants in 2010 (the period of heavy rainfall), constituted the following share of the annual value: in the sewer system A - 41.3%, in the sewer system B - 21.2%, in the sewer system C - 14.4%, in the sewer system D - 22.9%. Assuming the average gross amount of 3 PLN paid for treatment of 1 m3 of sewage, cost of extraneous water disposal in 2010 amounted from 78 533 PLN to 552 165 PLN, depending on the facility. The results obtained in the present study suggest that eliminating or reducing infiltration and inflow into the analyzed sewer systems would allow for large financial savings associated with reducing costs both for their transport and treatment as well as for modernization of facilities to enhance their hydraulic eapacity.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2011, 12
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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