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    Wyświetlanie 1-3 z 3
    Tytuł:
    The effect of industrial wastes and municipal sewage sludge compost on the quality of virginia fanpetals (SIDA HERMAPHRODITA RUSBY) biomass. Part 1. Macroelements content and their upatke dynamics
    Autorzy:
    Krzywy-Gawrońska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/779680.pdf
    Data publikacji:
    2012
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    osady ścieków komunalnych
    kompost
    węglan wapnia
    Virginia fanpetals
    zawartość makroelementów w glebie i roślinie
    popioły węgla brunatnego
    municipal sewage sludge
    sludge
    compost
    calcium carbonate
    high-calcium brown coal ash
    macroelements content in soil and plant
    Opis:
    A single-factor field experiment was carried out at the Cultivar Evaluation Station in Szczecin-Dąbie in 2008-2010. In the experiment, the compost produced with municipal sewage sludge by the GWDA method was used and high-calcium brown coal ash at a dose corresponding. A test plant was Virginia fanpetals (Sida hermaphodrita Rusby). The obtained results show that Virginia fanpetals biomass contained on average the most nitrogen (3.72 gźkg-1 d.m.), calcium (6.03 gźkg-1 d.m.) and sulphur (1.24 gźkg-1 d.m.) in 2008, while the most potassium (4.39 gźkg-1 d.m.) in 2010. Significantly more phosphorus, magnesium and sulphur was contained by Virginia fanpetals biomass from the objects where municipal sewage sludge compost had been applied without and with addition of high-calcium brown coal ash when compared to calcium carbonate or high-calcium brown coal ash being introduced into soil at the beginning of study. Differences in average nitrogen, potassium and calcium contents in the test plant biomass from particular fertilisation objects were not significant. The macroelements uptake by Virginia fanpetals biomass depended on the yield size and the content of chemical elements under discussion in it.
    Źródło:
    Polish Journal of Chemical Technology; 2012, 14, 2; 9-15
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena składu fizyczno-chemicznego osadów ściekowych pochodzących z komunalnej oczyszczalni ścieków
    Evaluation of the Physico-chemical Composition of Sludge from Municipal Sewage Treatment Plant
    Autorzy:
    Milik, J.
    Pasela, R.
    Szymczak, M.
    Chalamoński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818029.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    osady ściekowe
    skład chemiczny
    metale ciężkie
    substancja organiczna
    oczyszczanie ścieków komunalnych
    sewage sludge
    chemical
    heavy metals
    organic material
    waste waters treatment
    Opis:
    Municipal sewage sludge are a by-product of waste water treatment. The problems of sludge associated with the development of sludge require urgent solutions. Municipal sewage sludge may be used in agriculture in two forms: processed and unprocessed if they are stabilized and comply with acceptable levels of heavy metals and sanitation indicators and include the relevant product quantities of organic compounds and fertilizing nitrogen, phosphorus and potassium. Composition and quantity of sludge produced in the wastewater treatment process is different and depends on several parameters such as quality of waste water and processes for their purification. The presents shows an assessment of the physical and chemical sludge from sewage treatment plants selected and the results of research and analysis for the sludge collected from said object. Analysis of the results was carried out for possibilities to use sewage sludge for agricultural purposes. Sewage sludge derived from a sewage treatment plant mechanical-biological stabilization of sludge anaerobic digestion with a capacity of 26,400 m3. per day. The sediment samples were collected in the period from January to September 2015 year with a two-month interval. Attempts were subjected to microwave mineralization in a closed system in aqua regia. The heavy metal concentrations determined with a spectrophotometer Coupled Plasma emission ICP-OES Perkin-Elmer Optima 8000 detecting elements P, Ca, Mg, Pb, Cd, Hg, Ni, Zn, Cu, Cr. The collected sediment were determined: pH, dry weight of sediment, organic matter (marked as loss on ignition at 550 ° C), total nitrogen (Kjeldahl) and ammonium nitrogen. The results were compared with the limit values according to the law. It has been shown that the predominant heavy metals present in the sludge was copper and zinc, mercury was not detected. The value of organic matter sludge tested ranged from 49.36 to 63.15% of dry matter. The content of heavy metals in sediments was measured by reference to the existing provisions governing the use of natural sewage sludge. The contents of heavy metals were low and did not exceed the limit values in sewage sludge for their use in agriculture and land reclamation. The studied sediments were stable nature. The results indicate the good properties of the sludge, which can be used as organic fertilizer. It has been shown that the sludge produced in the study treatment did not exceed in any case permissible concentrations of heavy metals specified for sewage sludge used for agricultural purposes. The annual average content of heavy metals in the study period remained at a similar level. Understanding the composition of the physico-chemical sludge waste is the basis for the decision over their processing, use or disposal. The precipitate may be disposed by using thermal methods for combustion of solid comprising 90% of dry matter.
    Źródło:
    Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 579-590
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dewatering of conditioned sludge in small wastewater treatment plants
    Autorzy:
    Wolny, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/207409.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    wastewater treatment
    dewatering
    filtration
    polyelectrolytes
    sewage sludge
    sewage treatment
    sewage treatment plants
    water treatment plants
    municipal wastewater treatment plants
    wastewater treatment plants
    oczyszczanie ścieków
    odwadnianie
    filtrowanie
    polielektrolity
    osady ściekowe
    oczyszczalnie ścieków komunalnych
    oczyszczalnie ścieków
    Opis:
    Parameters characterizing the dewatering process of sewage sludge in small wastewater treatment plants (WWTPs) have been analyzed. Two municipal wastewater treatment plants of comparable capacity and similar technology of sewage treatment were selected to the analysis. Comparison of dewaterability of unprepared and conditioned sludge was made. During preliminary tests, the capillary suction time (CST) of sludge conditioned with cationic polyelectrolyte was determined. Next, for the optimal doses of selected polyelectrolyte, more detailed technological experiments were conducted such as vacuum filtration and susceptibility to the gravitational thickening. Tested sludge had very low susceptibility to thickening. The final volume of unprepared tested samples after 2 hour thickening was 977.0 cm3, while the initial volume of thickened sludge was 1000 cm3.The lowest value of final hydration for conditioned sludge was 64.0%.
    Źródło:
    Environment Protection Engineering; 2015, 41, 2; 99-105
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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