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    Tytuł:
    Oczyszczanie odcieków z beztlenowej stabilizacji osadów z oczyszczalni ścieków mleczarskich przy zastosowaniem metody hydrofitowej
    Treatment of Reject Water from Anaerobic Sewage Sludge Stabilization in Constructed Wetland
    Autorzy:
    Dąbrowski, W.
    Wiater, J.
    Boruszko, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818578.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    odcieki
    stabilizacja osadów ściekowych
    złoża hydrofitowe
    reject water
    sewage sludge stabilization
    constructed wetland
    Opis:
    The paper presents author's experience related to reject water treatment with constructed wetland (CW). CW technology is well known worldwide to treat municipal wastewater, rainwater and also industrial wastewater. The problem with reject water is mainly concerning high concentration of ammonia nitrogen. It is observed mainly in municipal WWTPs utilizing anaerobic sewage sludge stabilization. Dairy WWTP belonging to Mlekovita was modernized in 2013 with implementation of flotation process in wastewater line and anaerobic stabilization of excess and flotation sludge. Probably this is the biggest dairy WWTP in Poland. It is operating (July 2014) with 6886 m3/d and personal equivalent about 278 000 (project was done for PE 35 0000 and maximum flow 75000 m3/d). Reject water as a byproduct like sewage sludge is returned to the beginning of wastewater line. During own research with reject water it was found that concentration of ammonia nitrogen was varied from 291 N-NH4+/dm3to 423 mg N-NH4+/dm3. while value of BOD5 from 132 to 185 mg O2/dm3. Laboratory scale investigation was carried out with vertical flow CW model with total depth 0,65 m. filled with gravel and sand. Two hydraulic loads were applied during investigations – 0,1 and 0,2 m/d. The temperature during two series was changing from 22,0 do 26,0°C. High efficiency of BOD5 removal (up to 91%) from reject water produced in dairy WWTP was observed. The efficiency of ammonia nitrogen removal was varied from 78,3% to 90,0%. The efficiency of total phosphorus removal was low in both series. Vertical flow constructed wetland can be used as a low cost method to decrease load of dairy WWTP utilizing anaerobic sewage sludge utilization. To increase efficiency of reject water treatment lower hydraulic load (from 0,05 m/d) should be applied. Future researches will be carried out with real scale installation in Wysokie Mazowieckie equipped with special aeration system to supply vertical flow CW with oxygen.
    Źródło:
    Rocznik Ochrona Środowiska; 2015, Tom 17, cz. 2; 869-879
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemiczne usuwanie związków ropopochodnych z wody
    Chemical Removal of Petroleum Compounds from Water
    Autorzy:
    Piekutin, J.
    Boruszko, D.
    Wiater, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818614.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    SCP
    woda
    węglowodory ropopochodne
    SPC
    Water
    Petroleum Hydrocarbons
    Opis:
    Dispersing oil spill method is based on a interfacial tension reduction between water and oil through introduction a surfactant, so that spilled oil is changing its structure by dispersing in water. As a result of this process comes to break up oil contamination plume into smaller droplets, which is followed by its further dispersion in water. For study a 0.1% Rokrysol was used. The detergent was containing 30% of non-ionic surfactants, and 60% of anionic surfactants. In first research series the same amount of mixture and varying amounts of surfactant (SAA) were added, and in further series an established dose of the same surface active agents was added to varying amounts of crude oil. After mixing water with SPC emulsion was forming, which was decanted. The purpose of this paper was to determinate the possibilities of petroleum compounds removal from water with SAA usage.
    Źródło:
    Rocznik Ochrona Środowiska; 2015, Tom 17, cz. 2; 1545-1553
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ Efektywnych Mikroorganizmów na zmiany zawartości WWA w osadach ściekowych podczas stabilizacji beztlenowej
    Influence of Effective Microorganisms Bacteria on the PAHs Content in Sewage Sludge from the Dairy Wastewater Treatment During Anaerobic Stabilization
    Autorzy:
    Boruszko, D.
    Dąbrowski, W.
    Piekutin, J.
    Wiater, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818588.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    wielopierścieniowe węglowodory aromatyczne
    mleczarskie osady ściekowe
    efektywne mikroorganizmy
    polycyclic aromatic hydrocarbons
    dairy sewage sludge
    effective microorganisms bacteria
    Opis:
    There is a leak of information in literature about anaerobic stabilization of sewage sludge from dairy wastewater treatment plants (WWTPs). Different population of microorganisms are responsible for anaerobic sewage sludge stabilization. Own research were focused on using effective microorganisms (EM) invented by Teuro Higa for anaerobic stabilization. Sewage sludge was taken from dairy WWTP belonging to Mlekovita Cooperative in Wysokie Mazowieckie. It was mixture of excess and flotation sludge from pre-treatment of dairy sewage. Researches were conducted with laboratory scale model with two reactors – one was supplied with EM. Before stabilization average value of 16 PAHs was 0,690 μg·g-1 DM. It was found that trinuclear fraction was 46,4% of total PAHs and four nuclear 35,2% of total PAHs. General tendency of PAHs changes during anaerobic stabilization in both reactors(with and without EM) was similar. In first part of anaerobic stabilization (acid fermentation) after seven days it was observed increasing of total PAHs in reactor with and without EM. The sum of PAHs in reactor with EM was 1,125 μg· g-1 DM while in the other reactor without EM it was 1,201 μg· g-1 DM. This is typical for first part of sewage sludge anaerobic stabilization process. Addition of EM did not inhibited of PAHs release and during hydrolysis higher concentration of PAHs sum was observed due to concentration in raw sewage sludge. After two weeks’ time of anaerobic stabilizations decreasing of total sum of PAHs was observed due to concentration after first week of stabilization. It was smaller in reactor without EM .In the last part of sewage sludge stabilization decrease of most checked hydrocarbons was observed. Total concentration of PAHs in sewage sludge without EM was decreased up to 30,5% due to initial concentration. It was 0,479 μg· g-1 DM. In sewage sludge with EM it was decreasing up to 0,172 μg· g-1 DM (75,1% decrease). It was proved that using EM in anaerobic sewage sludge stabilization was responsible for decreasing of PAHs concentration.
    Źródło:
    Rocznik Ochrona Środowiska; 2015, Tom 17, cz. 2; 914-930
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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