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Wyświetlanie 1-2 z 2
Tytuł:
Changes in surface water microflora caused by discharge of purified sewage into rivers
Autorzy:
Godela, Agnieszka
Lewańska, Monika
Myga-Nowak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1179554.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sewage
river
sewage treatment plant
sewers
water microflora
Opis:
Progressive environmental degradation results in an increase in the number of waters that do not meet the standards in force. Surface waters are particularly vulnerable to pollution because they are receivers of purified water and agricultural or industrial wastewater flow. In addition, the local increase in temperature and the increase amount and availability of nutrients associated with wastewater discharged improves the microbial growth and thus increase their quantity. The treated sewage must meet certain requirements regarding their physicochemical and biological parameters. However, the regulations do not require to check microbiological quality by treatment plants, so the purpose of the study was to determine the impact of discharge of purified wastewater by the "Warta" sewage treatment plant down to Warta river. The study was conducted in 2008-2016 at three collection points near the place of discharge of purified sewage from Warta SA sewage treatment plant. It has been demonstrated that the process of sewage treatment is not enough in terms of microbiological pollution because the water samples collected at the points behind the discharge site of the effluent into the river were characterized by increased abundance and microbiological diversity.
Źródło:
World Scientific News; 2017, 75; 26-32
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Treated sewage as an additional source of dangerous bacteria in rivers such as Listeria spp.
Autorzy:
Lewańska, Monika
Godela, Agnieszka
Myga-Nowak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1179558.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Listeria
Listeria monocytogenes
listeriosis
sewage sludge
treated sewage
wastewater
Opis:
Purified water daily discharged to surface water from local sewage treatment plants can cause illnesses people and animals in nearby areas. Sometimes they also contribute to the development of diseases in much bigger region range. Often the cause of such infections are pathogenic Listeria rods especially Listeria monocytogenes, which are not eliminated in the technological process of wastewater treatment carried out by local sewage treatment plants. Therefore, the purpose of the study was to investigate the influence of the sewage treatment plant on the presence of Listeria bacteria and to estimate the potential hazard resulting from its occurrence in the water of the Warta River. Research points were located on the Warta River before and after the discharge of purified sewage through the treatment plant, also a direct exit of purified wastewater was examined. Samples were filtered and then estimated the growth characteristics of typical colonies on the selected diagnostic media were estimated and isolated microorganisms were characterized. Samples were filtered and then it had been defining the growth characteristics of typical colonies on the selected diagnostic media, finally isolated microorganisms were described. Studies have shown that the local wastewater treatment plant has a strong influence on the microbial quality of the Warta River and has shown strong impurity with Listeria rods, including pathogenic strains. Bearing in mind the results obtained, it can be stated that direct or indirect contact with receivers of the water of purified sewage poses a real threat to the health and even life of humans and animals.
Źródło:
World Scientific News; 2017, 75; 50-55
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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