Temat: UASB - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Cascade reactor system for methanogenic fermentation
Autorzy:: Jabłoński, S.
Krasowska, A.
Januszewicz, J.
Vogt, A.
Łukaszewicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/115487.pdf
Data publikacji:: 2011
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: biogas
anaerobic digestion
whey
UASB
methane
sewage
fermentation
multi-step digestion
Opis:: Methanogenic fermentation is promising method of obtaining environment-friendly energy. Moreover it can be used for disposal of sewage and other organic waste. However process complexity and susceptibility makes it difficult for application on a large scale. A new laboratory stand for studding of anaerobic digestion was developed. Three fermentation vessels and automated control system provides flexibility essential in investigation of digestion of different substrates and testing of different reactors configurations. Cheese whey is a troublesome dairy waste, potentially suitable for biogas production. Stable fermentation conditions for whey fermentation were obtained with the organic loading rate of 5 kg COD/m3 and methane production efficiency of 0,3 m3/kg COD. On the basis of obtained data the size of small biogas plant for average dairy was calculated.
Źródło:: Challenges of Modern Technology; 2011, 2, 4; 37-41
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Dynamic modelling of an anaerobic reactor treating coffee wet wastewater via multiple regression model
Autorzy:: Guardia-Puebla, Yans
Llanes-Cedeño, Edilberto
Domínguez-León, Ana Velia
Arias-Cedeño, Quirino
Sánchez-Girón, Victor
Morscheck, Gert
Eichler-Löbermann, Bettina
Powiązania:: https://bibliotekanauki.pl/articles/1841946.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: coffee wet wastewater
modelling
multiple regression model
upflow anaerobic sludge blanket
UASB
Opis:: A multiple regression model approach was developed to estimate buffering indices, as well as biogas and methane productions in an upflow anaerobic sludge blanket (UASB) reactor treating coffee wet wastewater. Five input variables measured (pH, alkalinity, outlet VFA concentration, and total and soluble COD removal) were selected to develop the best models to identify their importance on methanation. Optimal regression models were selected based on four statistical performance criteria, viz. Mallow’s Cp statistic (Cp), Akaike information criterion (AIC), Hannan–Quinn criterion (HQC), and Schwarz–Bayesian information criterion (SBIC). The performance of the models selected were assessed through several descriptive statistics such as measure of goodness-of-fit test (coefficient of multiple determination, R2; adjusted coefficient of multiple determination, Adj-R2; standard error of estimation, SEE; and Durbin–Watson statistic, DWS), and statistics on the prediction errors (mean squared error, MSE; mean absolute error, MAE; mean absolute percentage error, MAPE; mean error, ME and mean percentage error, MPE). The estimated model reveals that buffering indices are strongly influenced by three variables (volatile fatty acids (VFA) concentration, soluble COD removal, and alkalinity); while, pH, VFA concentration and total COD removal were the most significant independent variables in biogas and methane production. The developed equation models obtained in this study, could be a powerful tool to predict the functionability and stability for the UASB system.
Źródło:: Journal of Water and Land Development; 2021, 50; 229-239
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Sustainable management of wastewater: Theoretical design of combined upflow anaerobic reactors and artificial wetlands systems
Autorzy:: Guardia-Puebla, Yans
Llanes-Cedeño, Edilberto
Rodríguez-Pérez, Suyén
Arias-Cedeño, Quirino
Sánchez-Girón, Victor
Morscheck, Gert
Eichler-Löbermann, Bettina
Powiązania:: https://bibliotekanauki.pl/articles/1844389.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: anaerobic digestion
artificial wetlands
design methodology
fruit and vegetable wastewater
upflow anaerobic reactors
UASB
wastewater
Opis:: Anaerobic digestion (AD) is an adequate alternative to treat wastewater generated from fruit and vegetable processing (FVWW); likewise, in recent years, artificial wetlands (AWs) have been applied as a post-treatment process for anaerobically pre-treated wastewater. The objective of this work was to design a sustainable treatment system for FVWW composed of upflow anaerobic reactors (UASB) with phase separation and an AW system that receive the anaerobically pretreated effluent. Using the design methodologies for the UASB reactors and artificial wetlands with sub-surface flow (AW-SSF), the parameters of the combined AD-AW system that treat a wastewater flow of 300 m3∙d–1 were calculated. The UASB acidogenic system was adjusted to a hydraulic retention time (HRT) of 10 h and organic loading rate (OLR) of 13.84 kg COD m–3∙d–1; meanwhile, the methanogenic and cascade UASB reactors with OLRs of 10.0 and 3.0 kg COD m3∙d–1, and HRTs of 11 and 10 h, respectively, achieve a high COD removal efficiency (above 94%), and an overall biogas production rate of 1.53 m3 of biogas per m3 of reactor capacity per day. According to the results obtained with the theoretical design, anaerobic-wetland combined system achieves an overall efficiency greater than 98%. The wastewater treated by the proposed system will allow the reuse of 30% of the water used in the washing of fruits and vegetables.
Źródło:: Journal of Water and Land Development; 2020, 47; 66-76
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Overview of modern anaerobic wastewater treatment methods
Przegląd nowoczesnych metod beztlenowego oczyszczania ścieków
Autorzy:: Kowalik, R.
Bartkiewicz, L.
Powiązania:: https://bibliotekanauki.pl/articles/401996.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:: wastewater treatment
modern wastewater treatment methods
anaerobic reactors
ABR
UASB
AMBR
ASBR
AnMBR
EGSB
oczyszczanie ścieków
nowoczesne metody oczyszczania ścieków
reaktory beztlenowe
Opis:: The paper presents an overview of modern anaerobic wastewater treatment technologies. Characterised reactors for anaerobic wastewater treatment include UASB, ABR, AMBR, ASBR, AnMBR and EGSB reactors. Comparison with aerobic methods shows that use of anaerobic reactors allows for at least three times reduction of the amount sludge. Analysing the disadvantages and advantages of anaerobic wastewater treatment reactors, it can be concluded that their use is beneficial in wastewater treatment plants with problems of high COD concentrations in incoming wastewater and problems of the amount of sewage sludge produced.
W artykule przedstawiono przegląd nowoczesnych metod beztlenowego oczyszczania ścieków. Scharakteryzowano reaktory UASB, ABR, AMBR, ASBR, AnMBR i EGSB. Następnie porównano z metodami tlenowymi, co pokazało, że zastosowanie reaktorów beztlenowych pozwala na co najmniej trzykrotne zmniejszenie ilości osadu. Analizując wady i zalety beztlenowych reaktorów do oczyszczania ścieków, można stwierdzić, że ich zastosowanie jest korzystne w oczyszczalniach ścieków, w których występują problemy z wysokimi stężeniami ChZT w ściekach napływających oraz problemy z ilością wytwarzanego osadu ściekowego.
Źródło:: Structure and Environment; 2018, 10, 3; 266-277
2081-1500
Pojawia się w:: Structure and Environment
Dostawca treści:: Biblioteka Nauki

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