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Wyświetlanie 1-3 z 3
Tytuł:
The Prevalence of tet(A) and tet(M) Tetracycline Resistance Genes in Municipal Wastewater
Autorzy:
Hubeny, Jakub
Buta, Martyna
Zieliński, Wiktor
Harnisz, Monika
Korzeniewska, Ewa
Nowrotek, Monika
Płaza, Grażyna
Powiązania:
https://bibliotekanauki.pl/articles/123400.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
WWTP
tetracyclines
ARGs
ARB
antibiotic resistance
environment
wastewater
Opis:
Antibiotic resistance is a widespread problem that poses one of the greatest risks to public health around the world. The main cause of antibiotic resistance is the overuse of antibiotics in the human and veterinary medicine and in agriculture. Drugs are released into the environment with treated wastewater, and they can act as stressors that increase the prevalence of antibiotic resistance genes (ARGs). Wastewater treatment plants (WWTPs) are not equipped with appropriate technologies for eliminating the genetic material from the treated wastewater. In this study, the prevalence of tet(A) and tet(M) genes encoding resistance to tetracycline antibiotics was investigated in the samples of municipal wastewater and sewage sludge collected from two WWTPs and in the water samples collected from rivers which receive the treated wastewater. The samples were collected in two seasons of the year (summer and fall). The presence of ARGs was confirmed by PCR. The study revealed that ARGs were not effectively removed from wastewater by the WWTP in the Region of Silesia. Seasonal variations in the occurrence of the analyzed genes were not observed in the samples collected from the above-mentioned plant. Tetracycline resistance genes were detected in all samples of river water. The tet(A) gene was not removed from the treated wastewater in the WWTP in the Region of Warmia and Mazury, whereas the tet(M) gene was detected on a seasonal basis. The tet(M) gene was not detected in the samples of river water collected upstream and downstream from the WWTP. The study demonstrated that the existing WWTPs lack the means to eliminate ARGs. The wastewater treatment systems have to be modified to effectively remove ARGs from the treated wastewater.
Źródło:
Journal of Ecological Engineering; 2019, 20, 10; 1-6
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying the Wastewater Quality Index for Assessing the Effluent Quality of Recently Upgraded Meet Abo El-koum Wastewater Treatment Plant
Autorzy:
Ayoub, Mohamed
El-Morsy, Ahmed
Powiązania:
https://bibliotekanauki.pl/articles/1838434.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
assessment
evaluation
multiple linear regression
quality
wastewater
WWTP
wastewater treatment plant
Opis:
The wastewater quality index (WWQI) can be defined as a single value, which reflects the overall wastewater quality related to its input constituent parameters. The major objective of the present study was to investigate the suitability of the effluent quality from Meet Abo El-koum wastewater treatment plant in Egypt for safe disposal based on the wastewater quality index approach. Moreover, statistical analysis was applied to develop a simple model using multiple linear regression (MLR) for accurate prediction of WWQI depending on different wastewater quality parameters. The results indicate good quality of the treated wastewater for safe disposal in general. Moreover, it is apparent that about 17% of the WWQI values reached excellent quality referring to the classification of the WWQI levels. For greater simplicity, a relationship between BOD5 and COD was deduced using linear regression, so that the results of the BOD5 analyses that appear after five days can be skipped. This approximation can be used to calculate WWQI on a specific day given the results of the treated wastewater analyses on that day.
Źródło:
Journal of Ecological Engineering; 2021, 22, 2; 128-133
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wastewater reuse and mapping of irrigable soils: Case of Sidi Bel Abbes City, Algeria
Autorzy:
Mahfoud, Zakaria
Khaldi, Abdelkader
Korichi, Khaled
Powiązania:
https://bibliotekanauki.pl/articles/293066.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
bacteriology
physico-chemical parameters
reuse
soil
Sidi Bel Abbes City
wastewater
wastewater treatment plant (WWTP)
Opis:
This work aims to evaluate the treated wastewater from the activated sludge treatment plant in the City of Sidi Bel Abbes (North-Western Algeria) which is required for reuse in irrigation. The control of irrigated areas downstream is done based on a pedological study. Physico-chemical analysis such as (pH, BOD5, COD and SS) indicate results in Algerian and international standards required by the WHO. The Sodium Adsorption Ratio and Electrical Conductivity values of the treated wastewater belong to the C3-S1 class. The treated wastewater has a fairly good microbiological quality that meets Algerian standards. The helminth eggs are practically absent. The concentrations of heavy metals are much lower than the limits prescribed in the Algerian decrees. Therefore, the overall processing plant efficiency is satisfactory and has the characteristics of a good treated water quality for reuse in the field of irrigation while protecting the environment. The pedological study of the soil samples shows that the most dominant fraction is undeveloped calcimagnetic. The planned irrigation plain covers an area of about two thousand hectares. Depending on the crops to irrigate; the development and nature of the necessary or recommended improvements, the proposed irrigation perimeter could be classified into five categories in which only three categories are irrigable. Water projects have been proposed to ensure the irrigation of three subdivided sectors.
Źródło:
Journal of Water and Land Development; 2020, 46; 153-161
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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