Temat: WWTP - Prolib Integro

Skocz do pozycji: 1.

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
Tematy:: WWTP
tetracyclines
ARGs
ARB
antibiotic resistance
environment
wastewater; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/123400.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Prevalence of Beta Lactamases Genes in Sewage and Sludge Treated in Mechanical-Biological Wastewater Treatment Plants
Autorzy:: Zieliński, Wiktor
Buta, Martyna
Hubeny, Jakub
Korzeniewska, Ewa
Harnisz, Monika
Nowrotek, Monika
Płaza, Grażyna
Tematy:: WWTP
beta-lactamases
wastewater treatment
antibiotic resistance genes; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/124493.pdf Link otwiera się w nowym oknie
Opis:: Wastewater treatment plants (WWTPs) are a very important link in the spread of antibiotic resistance genes to the environment and the formation of antibiotic-resistant microorganisms. The mechanical and biological methods of wastewater treatment in WWTPs do not completely remove the resistance genes from sewage. The genes responsible for extended-spectrum beta-lactamases (ESBLs) are very common in the family Enterobacteriaceae that colonize the human digestive tract and are abundant in wastewater. The aim of this study was to analyze the prevalence of genes encoding beta-lactamases in the wastewater and sludge samples collected from two WWTPs in the Polish regions of Warmia and Silesia and from the river water upstream and downstream from the WWTPs. The wastewater samples were passed through polycarbonate membrane filters, whereas the sludge samples were homogenized, and genomic DNA was extracted. The bla_TEM, bla_OXA and bla_SHV genes were detected by means of standard PCR. The most prevalent gene was bla_TEM which occurred in all samples, including the treated wastewater. The bla_OXA gene was also frequently detected in all samples from the WWTP in Silesia. The bla_SHV gene was least prevalent in the tested samples. These results indicate that wastewater is a hotspot for resistant bacteria. Beta-lactamase genes are not eliminated through the mechanical-biological wastewater treatment methods, and they can spread to other environments, thus increasing the pool of antibiotic resistance genes around the world and creating epidemiological risks.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Diversity of Peritricha (Ciliophora) in Activated Sludge Depending on the Technology of Wastewater Treatment
Autorzy:: Babko, Roman
Kuzmina, Tatiana
Pliashechnik, Volodimir
Zaburko, Jacek
Szulżyk-Cieplak, Joanna
Łagód, Grzegorz
Tematy:: WWTP
wastewater treatment plant
activated sludge
attached ciliates
Peritricha; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59114246.pdf Link otwiera się w nowym oknie
Opis:: The representation of Peritricha ciliates was studied in the activated sludge of two wastewater treatment plants (WWTP), one of which operates using a technology that includes alternating aerobic, anoxic and anaerobic conditions in bioreactors (Lublin, Poland), and the other – only aerobic conditions (Sumy, Ukraine). During the study, 14 Peritricha species were identified in the WWTP Lublin, and 13 species were identified in the WWTP Sumy. The similarity of species lists was 81.5% (Sørensen index). On the basis of on the similarity and taking into account the occurrence rate (≥ 60%), a common group of Peritricha species characteristic of the activated sludge from these two types of treatment facilities was identified, which includes 4 species of colonial Peritricha: Carchesium polypinum, Epistylis coronata, Epistylis longicaudatum and Opercularia articulata, and also 4 species of solitary Peritricha: Vorticella aquadulcis, Vorticella convallaria, Vorticella infusionum and Vorticella microstoma. Despite the very high similarity in species composition, statistical analysis of the population structure of Peritricha showed a clear separation of two WWTPs with different wastewater treatment technologies. If there is a significant similarity in the species composition of Peritricha, the species, based on their abundance and occurrence, are divided into two groups, focused on different technological schemes. The population structure of Peritricha responds to the changes in purification technology, showing the changes not so much in species composition as in their quantitative structure. The differences in bioreactor conditions and increased effluent treatment efficiency demonstrated by the WWTP Lublin result in differences in Peritricha species structure, which are reflected in higher Peritricha abundance in WWTP Lublin compared to WWTP Sumy.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Occupational exposure to Staphylococcus aureus in the wastewater treatment plants environment
Autorzy:: Kozajda, Anna
Jeżak, Karolina
Tematy:: occupational exposure
antibiotic resistance
bioaerosol
MRSA
S. aureus
WWTP; Pokaż więcej
Wydawca:: Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Powiązania:: https://bibliotekanauki.pl/articles/2085573.pdf Link otwiera się w nowym oknie
Opis:: BackgroundThe aim of the study was to assess the occupational exposure to Staphylococcus aureus bacteria, including methicillin- resistant S. aureus (MRSA) and other antibiotic-resistant strains in the municipal wastewater treatment plants (WWTPs) environment.Material and MethodsIn 16 WWTPs in Poland, 33 wastewater and 253 air samples were collected in the spring–summer season. The microbiological analysis was carried out using a chromogenic medium. Species identification was carried out using the matrix assisted laser desorption ionization time-of-flight method, while the antibiotic-resistance analysis was performed with an automatic method.ResultsAmong 2805 bacterial isolates from the air and wastewater, 574 were identified as S. aureus species (20.5%). The presence of S. aureus species was found in 11 WWTPs (69%), among them in 11 WWTPs in raw wastewater and in 1 WWTP additionally in treated wastewater. The concentrations of S. aureus in wastewater ranged 2–1215 colony-forming units per milliliter (CFU/ml). In the air, 2 S. aureus isolates were identified in concentrations of 5 and 10 CFU/m³; both samples were collected at the stage of mechanical wastewater treatment. The results revealed the following trend: the higher the outdoor temperature, the bigger the number of WWTPs with confirmed S. aureus presence. Among 149 S. aureus isolates (2 from the air and 147 from wastewater, including 2 MRSA), 100 isolates were resistant only to penicillin, while 34 isolates showed multi-antibiotic resistance (to penicillin and other drugs). It was found that isolated bacteria were resistant almost strictly to critical and highly important antibiotics in veterinary medicine.ConclusionsIn general, WWTPs workers are occupationally exposed to S. aureus, including MRSA, and other antibiotic- and multi-antibiotic-resistant strains. The highest risk of infection concerns the activities carried out in direct contact with wastewater or devices through which wastewater flows, particularly at the stage of mechanical treatment. A significant source of S. aureus seems to be intensive livestock farming located in the area of the WWTPs under analysis. The study confirms the necessity to disinfect the wastewater discharging into WWTPs.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Utilization of WWTP Output into Liquid Organic Fertilizer on the Growth of Pak Choi (Brassica rapa L.)
Autorzy:: Afifah, Ratih Nur
Setyono, Prabang
Rachmawati, Siti
Tematy:: wastewater
WWTP output
liquid organic fertiliser
Brassica rapa L.; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59114189.pdf Link otwiera się w nowym oknie
Opis:: Industrial wastewater generally contains many nutrients and organic materials that can be useful as a source of nutrition for plants. Processing wastewater into liquid organic fertilizer (LOF) can be a solution to manage industrial wastewater produced and can reduce the negative environmental impact of direct discharge into the environment. This study aims to determine the effect and optimal concentration of LOF from WWTP output of PT X on pak choi (Brassica rapa L.) plant growth and analyze the quality of LOF content according to SNI in the Minister of Agriculture Regulation Number 70 of 2011. This study used the complete randomized design (CRD) method, with the following treatment combinations: A (control, 100% WWTP output of PT X), B (20% LOF), C (40% LOF), D (60% LOF), E (80% LOF), F (100% LOF). Each treatment was repeated three times so that 18 test plants were obtained. Observation variables include height, number of leaves, leaf width, and fresh weight of Brassica rapa L. plants. Data analysis using SPSS one-way analysis of variance (ANOVA) test and continued to DMRT test. The results showed that the provision of LOF from WWTP output of PT X had a significant effect on the growth of Brassica rapa plants in the parameters of plant height in the fourth and fifth weeks, the number of leaves from the second to the fifth week, the leaf width parameter in the fifth week, and the fresh weight parameter. The optimal treatment for the LOF comparison of all parameters is in treatment D (60% LOF). The test results of LOF content contain C-organic 3.61%, nitrogen 1.1%, phosphate 0.385%, potassium 0.485%, and pH 5.27. These values have not met the SNI LOF in the Minister of Agriculture Number 70 Regulation of 2011. There is a need for the addition of organic ingredients that can increase the N, P, and K content in order to increase the POC yields and have a higher impact on plants.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Distribution of Microplastics in Domestic Wastewater and Microplastics Removal Potential in Wastewater Treatment Plants
Autorzy:: Fauzi, Mhd.
Darnas, Yeggi
Muna, Cut Rauzatun
Nizar, Muhammad
Tematy:: distribution
domestic wastewater
microplastics removal
possibility
WWTP
wastewater treatment plant; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59113604.pdf Link otwiera się w nowym oknie
Opis:: Microplastics in domestic wastewater are detrimental to living organisms and appear in a variety of sizes, colors, and shapes. The purpose of this study is to examine the distribution of microplastics in domestic wastewater, as well as the possibility for microplastic removal in wastewater treatment plants (WWTP). The sampling method used is SNI 6989.59:2008 concerning Wastewater Sampling Methods that Apply in Indonesia. To remove organic compounds in the sample, 0.05 M Fe (II) and 30% H2O2 solution were added by the digestion process at 75 °C for 30 minutes and cooled. Samples were filtered using Whattman GF/C filter paper with the help of a vacuum pump and dried. To identify the concentration, shape, size, color of microplastics, visual analysis was used with the help of a microscope using the zig-zag technique. The concentration of microplastics in domestic wastewater in Gampong Garot is 30.17 ± 0.75 particles/100 mL sample. The most commonly found microplastic size is 1,001–5,000 μm, while the dominant color is transparent. The forms of microplastic found in the samples were fiber, fragments and microbeads with a percentage of 65.20%, 23.16% and 11.64%, respectively. These microplastics come from local community activities such as washing clothes, bathing, washing dishes, and other activities. So, it is necessary to treat domestic wastewater using WWTP. Not only does it remove organic matter and nutrients, WWTP also has the potential of microplastics removal around 7–99% depending on the processing unit.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

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
Tematy:: assessment
evaluation
multiple linear regression
quality
wastewater
WWTP
wastewater treatment plant; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/1838434.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Study on activated sludge flocs morphology and composition in a full-scale wastewater treatment plant in Poland
Autorzy:: Liwarska-Bizukojc, Ewa
Andrzejczak, Olga
Solecka, Monika
Tematy:: filamentous bacteria
biomass
activated sludge
WWTP
bakterie nitkowate
biomasa
osad czynny; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/207156.pdf Link otwiera się w nowym oknie
Opis:: This work is a comprehensive study of a full-scale municipal wastewater treatment plant (WWTP) in the city of Zgierz (Poland) aiming at the estimation of the impact of seasonal changes of temperature on flocs morphology, biomass concentration, quantity of filamentous bacteria, content of polyhydroxybutyrate (PHB) and composition of microinvertebrates in the activated sludge system. Two short-term measurement campaigns, in winter and in summer, were carried out under dry weather conditions. It occurred that lower temperatures (11.1–14.6 °C) had hardly any effect on flocs size or concentration of activated sludge biomass in the full-scale activated sludge system treating municipal wastewater. They did not aggravate the biosynthesis of PHB either. However, decreasing temperature favored the growth of filamentous bacteria and led to the elevation of the sludge volume index (SVI). In spite of this, it did not induce any bulking events. Irrespective of the season, the groups of crawling ciliates, attached ciliates and testate amoebae, indicating good performance of the full-scale plant tested, were predominant.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Analysis and Assesment of the Wastewater Treatment Plant Operation in the City of Kłodzko
Autorzy:: Garbowski, T.
Wiśniewski, J.
Bawiec, A.
Tematy:: wastewater treatment system
sewage treatment efficiency
WWTP
treatment plant reliability factor; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/125373.pdf Link otwiera się w nowym oknie
Opis:: In this study, the current operation efficiency of the wastewater treatment plant (WWTP) in the city of Kłodzko in the Lower Silesia Voivodeship (Poland) was analyzed and the predicted amount of the wastewater flowing to the WWTP in a 20-year period (until the year 2036) was estimated. The data on the quality and the quantity of raw (entering to the WWTP) and treated sewage from the years 2012-2016 were analyzed. The five essential pollutants indicators: biochemical oxygen demand (BOD₅), chemical oxygen demand (COD_Cr), total suspended solids (TSS), total nitrogen and total phosphorus, regulated in the water permit were used to evaluate the efficiency of contaminants removal. On the basis of the percentage reduction of the individual pollutants indicators and their acceptable concentrations in the treated sewage, the effectiveness of the operation of the object was determined. Furthermore, a so-called the treatment plant reliability factor (RF) was calculated and its value below 1.0 indicates the correct operation of the wastewater treatment plant. After determining the prospective amount of raw sewage in 2036 (based on the decreasing population in the city) it has been found that the WWTP will work with a significant reserve of capacity and the modernization of the treatment system, leading to a decrease of its capacity should be considered.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: WWTP effluent treatment with ultrafiltration with different mixed matrix nanocomposite membranes : comparison of performance and fouling behavior
Porównanie efektywności i foulingu ultrafiltracyjnych membran nanokompozytowych : zmieszana matryca podczas ultrafi ltracji odpływów z oczyszczalni ścieków
Autorzy:: Kamińska, Gabriela
Tematy:: ultrafiltration
fouling
micropollutants
nanocomposite membranes
WWTP effuent
ultrafiltracja
mikrozanieczyszczenia
membrany nanokompozytowe
oczyszczalnie ścieków; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/2203135.pdf Link otwiera się w nowym oknie
Opis:: Polymer mixed-matrix nanocomposite membranes were prepared by a wet-phase inversion method and used in ultrafiltration processes to treat wastewater treatment plant effluent spiked with organic micropollutants. The effects of halloysite (Hal), TiO2, and functionalized single-walled carbon nanotube (SWCNT-COOH) nanofillers on the treatment efficiency, permeability loss, and fouling behavior of polyethersulfone (PES) membranes were investigated and compared with those of a pristine PES membrane. The nanocomposite membranes exhibited lower porosity and stronger negative surface charge because of the added hydrophilic nanofillers. The PES-Hal membrane achieved the optimal balance of permeability and micropollutant removal owing to enhanced pollutant adsorption on the membrane surface and the creation of an easily removable cake layer (i.e., reversible fouling). The PES-SWCNT-COOH membrane demonstrated the highest treatment efficiency, but also the high permeability loss. In contrast, PES-TiO2 exhibited excellent antifouling properties, but poorer treatment capabilities.
Celem pracy było porównanie zdolności separacyjnych i tendencji do foulingu trzech membran nanokompozytowych podczas oczyszczania odpływu z oczyszczalni, który domieszkowano mikrozanieczyszczeniami organicznymi. Membrany nanokompozytowe typu mieszana matryca preparowano metodą inwersji. Membrany nankomopomozytywe domieszkowano haloizytem, nanotlenkiem ditytanu lub jednościennymi nanorurkami węglowymi funkcjonalizowanymi grupami karboksylowymi (SWCNT-COOH). Membrany nanokompozytowe charakteryzowały się niższą porowatością i silniejszym ujemnym ładunkiem powierzchniowym dzięki dodaniu hydrofilowych nanowypełniaczy. Membrana PES-Hal została uznana za najbardziej korzystną pod względem wydajności hydraulicznej i współczynników retencji mikrozanieczyszczeń. Było to wynikiem zwiększonej adsorpcji zanieczyszczeń na powierzchni membrany i tworzeniu łatwo usuwalnej warstwy placka (tj. oporu wywołanego foulingiem odwracalnym). Membrana PES-SWCNT-COOH charakteryzowała najwyższymi współczynnikami retencji, ale również dużą utratą przepuszczalności. Natomiast PES-TiO2 wykazywała doskonałe właściwości przeciwporostowe, ale słabsze właściwości separacyjne względem badanych mikrozanieczyszczeń.
Dostawca treści:: Biblioteka Nauki

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