Log in

Relevant bibliographies by topics / Upflow anaerobic / Journal articles

To see the other types of publications on this topic, follow the link: Upflow anaerobic.

Journal articles on the topic 'Upflow anaerobic'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Upflow anaerobic.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Sawayama, Shigeki, Tatsuo Yagishita, and Kenichiro Tsukahara. "Lighted upflow anaerobic sludge blanket." Journal of Bioscience and Bioengineering 87, no. 2 (January 1999): 258–60. http://dx.doi.org/10.1016/s1389-1723(99)80026-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

G. Venkatasamy, G. Venkatasamy, and S. Aruna S. Aruna. "Treatment of Distillery Spentwash in Upflow Anaerobic Contact Filter." Indian Journal of Applied Research 3, no. 7 (October 1, 2011): 199–200. http://dx.doi.org/10.15373/2249555x/july2013/61.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Wu, Jing, Pengjuan Zhao, Lei Tian, Lin Shi, and Hanchang Shi. "Internal circulation anaerobic digester—a upflow anaerobic sludge digester." Journal of Biotechnology 150 (November 2010): 39. http://dx.doi.org/10.1016/j.jbiotec.2010.08.111.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Young, Harley W., and James C. Young. "Hydraulic Characteristics of Upflow Anaerobic Filters." Journal of Environmental Engineering 114, no. 3 (June 1988): 621–38. http://dx.doi.org/10.1061/(asce)0733-9372(1988)114:3(621).

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Diamantis, V. I., W. Verstraete, and A. Aivasidis. "Upflow anaerobic clarification tank (UACT) to upgrade existing anaerobic effluents." Water Science and Technology 59, no. 12 (June 1, 2009): 2411–19. http://dx.doi.org/10.2166/wst.2009.306.

Full text

Abstract:

The Upflow Anaerobic Clarification Tank (UACT) is of interest as a post-treatment step for high-rate anaerobic wastewater treatment systems. The UACT contributes to extra capture of methane from the raw wastewater. It also significantly facilitates the reuse of the treated water. The efficiency of the UACT process is demonstrated in this study using laboratory-scale reactors. The water produced by the UACT had a low total COD, in most cases below 145 mg/L and a soluble COD below 60 mg/L at surface loading rates between 0.1–0.4 m3/(m2 h) and hydraulic retention times between 5–6 h. The sludge bed of the UACT was characterised by 6–10 times higher substrate affinity (for ethanol, acetate and propionate) compared to the parent UASB and similar specific activity. The results suggest that a UASB followed by the UACT can, upon subsequent application of a rapid filtration, qualify as a total COD removal, no longer necessitating aerobic treatment.

APA, Harvard, Vancouver, ISO, and other styles

6

Peck, Michael W., and Freda R. Hawkes. "Anaerobic digestion of cattle slurry in an upflow anaerobic filter." Biomass 13, no. 2 (January 1987): 125–33. http://dx.doi.org/10.1016/0144-4565(87)90032-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Kennedy, K. J., and S. R. Guiot. "Anaerobic Upflow Bed-Filter – Development and Application." Water Science and Technology 18, no. 12 (December 1, 1986): 71–86. http://dx.doi.org/10.2166/wst.1986.0164.

Full text

Abstract:

The Upflow Sludge Bed-Filter (UBF) design provides high active biomass concentrations and long solid retention times (SRT) allowing the treatment of dilute to high strength wastes at high organic loading rates (LR) and short hydraulic retention times (HRT). The UBF system was shown to withstand severe organic shock loads and recover within a reasonable period of time. The effect of packing material on biomass retention and biomass characteristics and reactor performance was determined. A pseudo-steady state (PSS) model was developed that predicts reactor performance as a function of HRT or biomass concentration. Application of this model to step-up and step-down experiments indicated that two sets of kinetic parameters were required to account for hysteresis effects. Application of the UBF concept to the treatment of municipal landfill leachate resulted in greater than 95% COD removal at LR upto 33 kg COD/m3.d.

APA, Harvard, Vancouver, ISO, and other styles

8

Manariotis, Ioannis D., and Sotirios G. Grigoropoulos. "Municipal-Wastewater Treatment Using Upflow-Anaerobic Filters." Water Environment Research 78, no. 3 (March 2006): 233–42. http://dx.doi.org/10.2175/106143005x90029.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Zhang, Zhenjia, Masayuki Fukagawa, Masao Ukita, and Hiroshi Nakanishi. "The Characteristics of Upflow Anaerobic Hybrid Blanket." Doboku Gakkai Ronbunshu, no. 515 (1995): 103–13. http://dx.doi.org/10.2208/jscej.1995.515_103.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Córdoba, Pedro R., Fernando Sánchez Riera, and Faustino Sineriz. "Temperature effects on upflow anaerobic filter performance." Environmental Technology Letters 9, no. 8 (August 1988): 769–74. http://dx.doi.org/10.1080/09593338809384631.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Swaminathan, Kanchana, T. Swaminathan, and P. V. R. Subrahmanyam. "Degradation of resorcinol in upflow anaerobic filter." Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology 26, no. 5 (July 1991): 655–72. http://dx.doi.org/10.1080/10934529109375661.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Mumme, Jan, Bernd Linke, and Rainer Tölle. "Novel upflow anaerobic solid-state (UASS) reactor." Bioresource Technology 101, no. 2 (January 2010): 592–99. http://dx.doi.org/10.1016/j.biortech.2009.08.073.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Ren, Ting-Ting, Yang Mu, Bing-Jie Ni, and Han-Qing Yu. "Hydrodynamics of upflow anaerobic sludge blanket reactors." AIChE Journal 55, no. 2 (February 2009): 516–28. http://dx.doi.org/10.1002/aic.11667.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Apolinarski, M. E. "Anaerobic Treatment of Yeast Plant Effluent in Fermentation Reactor System Compared with an Upflow Filter System." Water Science and Technology 24, no. 7 (October 1, 1991): 195–202. http://dx.doi.org/10.2166/wst.1991.0200.

Full text

Abstract:

A laboratory-scale study was conducted on a two-stage fermentation reactor system and an upflow anaerobic filter system at several loading rates and hydraulic retention times. Feed substrate was wastewater from yeast production plant. The hydraulic residence time for first-stage fermentation reactor was 7 days and loading rate was in the range of 1.1-2.3 kg COD m−3d−1. The hydraulic residence time for second-stage fermentation reactor was 3.5 days and loading rate was 0.8-1.0 kg COD m−3d−1. Upflow anaerobic filter was operated at hydraulic retention time ranging from 5 to 2 days and loading rates ranging from 0.5 to 4.5 kg COD m−3 d−1. Despite shorter residence time, higher purification effects have been achieved for upflow anaerobic filter than for I-stage digestion reactor. For anaerobic upflow filter 61%-68% of COD reduction has been achieved at loading rates 3.5-4.0 kg COD m−3 d−1 and retention time of 2 days. For both systems in comparison the relationship between purification effects and volumetric organic load has been established. Amount of generated fermentation gas has been measured and composition of that gas has been analysed. Methane content in fermentation gas was in the range of 6l%-64%, hydrogen sulfide content was 0.5%-1.9%. Laboratory experiments were carried out at the temperature 33°C.

APA, Harvard, Vancouver, ISO, and other styles

15

Odejobi, Oludare J., Atilade A. Oladunni, and Abiodun O. Jegede. "Anaerobic treatment of wastewater using an upflow anaerobic sludge blanket reactor." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 38, no. 20 (October 4, 2016): 3011–18. http://dx.doi.org/10.1080/15567036.2015.1129372.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Wiegant, W. M., and G. Lettinga. "Thermophilic anaerobic digestion of sugars in upflow anaerobic sludge blanket reactors." Biotechnology and Bioengineering 27, no. 11 (November 1985): 1603–7. http://dx.doi.org/10.1002/bit.260271115.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Wang, Jundan, and Junyuan Ji. "Performance of anaerobic denitrifying upflow anaerobic sludge bed bioreactor (AD-UASB)." IOP Conference Series: Earth and Environmental Science 508 (July 1, 2020): 012157. http://dx.doi.org/10.1088/1755-1315/508/1/012157.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Rajakumar, R., T. Meenambal, J. Rajesh Banu, and I. T. Yeom. "Treatment of poultry slaughterhouse wastewater in upflow anaerobic filter under low upflow velocity." International Journal of Environmental Science & Technology 8, no. 1 (December 1, 2010): 149–58. http://dx.doi.org/10.1007/bf03326204.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Grant, Shannon, and Kwan-Chow Lin. "Effects of temperature and organic loading on the performance of upflow anaerobic sludge blanket reactors." Canadian Journal of Civil Engineering 22, no. 1 (February 1, 1995): 143–49. http://dx.doi.org/10.1139/l95-013.

Full text

Abstract:

A study investigating the effects of temperature and organic loading on the performance of upflow anaerobic sludge blanket reactors was carried out in the laboratory. Laboratory-scale reactors of 3.2 L volume were semicontinuously fed a synthetic substrate consisting of beef consommé and macro- and micro-nutrient compounds. Temperatures ranged from 10 to 42 °C; organic loadings ranged from 2.0 to 30 kg COD/(m3∙d). Steady-state process kinetics and efficiencies were evaluated for the various conditions. Based on the assumption that upflow anaerobic sludge blanket reactor kinetics in the temperature range of 10–30 °C could be approximated by Monod and modified Arrhenius equation relationships, effluent SCOD concentrations and removals were used to determine the maximum rate of substrate utilization, the half-velocity constant, and the temperature coefficient. A design and operating chart was constructed based on the kinetic coefficients determined from the experimental data. Key words: upflow anaerobic sludge blanket reactor, temperature, loading, performance, kinetics.

APA, Harvard, Vancouver, ISO, and other styles

20

Sponza, D. T., and H. Atalay. "Simultaneous toxicity and nutrient removals in simulated DEPHANOX (anaerobic/anoxic/oxic sequentials) process treating dinitrotoluene and trichlorotoluene." Water Science and Technology 49, no. 5-6 (March 1, 2004): 237–44. http://dx.doi.org/10.2166/wst.2004.0759.

Full text

Abstract:

A modified DEPHANOX process including two upflow sludge blanket reactors (USB) (anaerobic-upflow sludge blanket -UASB and anoxic-upflow anoxic sludge blanket -UANSB) and one completely stirred tank reactor (CSTR system was simulated in order to detect the simultaneous removal of dinitrotoulene (DNT), trichlorotoluene (TCT), and nutrients. The phosphorus uptake and nitrification was excessively determined in aerobic CSTR reactor. Influent DNT was transformed to toluene, NH4-N and total aromatic amines (TAA) while TCT was transformed to toluene and dichlorotoluene (DCT) under anaerobic and anoxic conditions. Increasing the volumetric loading rate of DNT and TCT from 18 mg/L.day and 0.35 g/L.day to 60 mg/l.day and 1.2 g/L.day, respectively, resulted in higher COD conversion (70-80%) rates and methane productions (250-300 ml/day) in anaerobic reactor. 90% NO3-N and 87% PO4-P were achieved in anoxic and aerobic reactors at DNT and TCT loading rates as high as 40-60 mg/L.day and 0.8-1.2 g/L.day, respectively. The TAA produced under anaerobic and anoxic conditions were ultimately removed under the aerobic stage. The UASB and anoxic UASB reactor effluents were less toxic relative to the influent when analyzed by anaerobic toxicity tests and specific methanogenic activity tests, indicating that such anaerobic/anoxic aerobic sequential treatments could be able to reduce toxic organics together with nutrient removal.

APA, Harvard, Vancouver, ISO, and other styles

21

Jeyaseelan, S., and T. Matsuo. "Effects of phase separation in anaerobic digestion on different substrates." Water Science and Technology 31, no. 9 (May 1, 1995): 153–62. http://dx.doi.org/10.2166/wst.1995.0355.

Full text

Abstract:

Treatment characteristics of two different substrates were investigated by two-phase anaerobic digestion at 20 °C. One substrate contained 87 percent carbohydrates and proteins and the other 94 percent carbohydrates and lipids. The anaerobic system consisted of a completely mixed reactor for hydrolysis and acidogenesis reactions, and an upflow filter for methanogeneous conversions. The experiments showed that the best phase separation occurs with 4 to 8 hours of detention times within the acid reactor. A single anaerobic system with upflow anaerobic filter alone for the same total detention times at the same substrate concentrations was operated for comparison. The results proved that two-phase digestion systems have higher digestion efficiencies than corresponding single-phase digestion systems. For substrates with more lipids the digestion efficiencies were very much greater.

APA, Harvard, Vancouver, ISO, and other styles

22

Iñiguez-Covarrubias, Gilberto, and Arturo Camacho-López. "Evaluación de un reactor de manto de lodo con flujo ascendente (UASB) con cambios de velocidad de alimentación." Ingeniería, investigación y tecnología 12, no. 2 (April 1, 2011): 199–208. http://dx.doi.org/10.22201/fi.25940732e.2011.12n2.020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Asato, Caitlin M., Jorge Gonzalez-Estrella, Donald S. Skillings, Andrea Vargas Castaño, James J. Stone, and Patrick C. Gilcrease. "Anaerobic digestion of synthetic food waste-cardboard mixtures in a semi-continuous two-stage system." Sustainable Energy & Fuels 3, no. 12 (2019): 3582–93. http://dx.doi.org/10.1039/c9se00667b.

Full text

Abstract:

A two-stage anaerobic digestion system consisting of a continuously-stirred tank reactor and upflow anaerobic sludge blanket (CSTR-UASB) in series was evaluated for semi-continuous digestion of food waste and corrugated cardboard mixtures.

APA, Harvard, Vancouver, ISO, and other styles

24

Araki, N., and H. Harada. "Population dynamics of methanogenic biofilm consortium during a start-up period of anaerobic fluidized bed reactor." Water Science and Technology 29, no. 10-11 (October 1, 1994): 361–68. http://dx.doi.org/10.2166/wst.1994.0780.

Full text

Abstract:

The changes in physical properties and microbial activities were investigated during initial biofilm formation in lab-scale anaerobic fluidized bed reactors. Four different upflow velocities, i.e., 4, 7, 14 and 25 m·hr−1 were applied to four respective reactors of an equal size. The upflow velocities caused a prominent difference in the pattern of initial biofilm formation. The biofilm thickness attained eventually approximately 100 μm after 100 days of operation, independent of upflow velocity. On the contrary the biofilm density varied from 4.4 to 24.1 mg-VSS·cm−3 with an increase in the upflow velocity imposed. The activity of acetoclastic methane production increased remarkably 15 to 30 fold of seed sludge, regardless of upflow velocity. Microbial activities with respect to acetate production, H2-utilizing methanogenesis and acetate-utilizing methanogenesis increased finally up to 3-4 times as large as those of suspended grown sludge in a chemostat.

APA, Harvard, Vancouver, ISO, and other styles

25

Petropoulos, Evangelos, Burhan Shamurad, Shamas Tabraiz, Yongjie Yu, Russell Davenport, Thomas P. Curtis, and Jan Dolfing. "Sewage treatment at 4 °C in anaerobic upflow reactors with and without a membrane – performance, function and microbial diversity." Environmental Science: Water Research & Technology 7, no. 1 (2021): 156–71. http://dx.doi.org/10.1039/d0ew00753f.

Full text

Abstract:

In this study, we investigated the feasibility of anaerobic sewage treatment at extremely low temperatures (4 °C) using two reactor setups: Upflow anaerobic sludge blanket reactors (UASB) without and with (AnMBR_UASB(UF)) a membrane.

APA, Harvard, Vancouver, ISO, and other styles

26

Sauvegrain, P., A. Tazi-Pain, F. Rogalla, and F. Valter. "Anaerobic Biofiltration versus Aerobic Membrane Filtration: Comparison on a Difficult Substrate." Water Science and Technology 25, no. 10 (May 1, 1992): 211–18. http://dx.doi.org/10.2166/wst.1992.0249.

Full text

Abstract:

Several methods were compared to treat heat treatment liquor on a municipal wastewater treatment plant, to reduce loading and allow upgrading. To ensure low suspended solids in the return flows, granular anaerobic filters were chosen in parallel with membrane treatment:–an upflow wood-based charcoal anaerobic filter–an upflow floating polystyrene anaerobic filter–an aerobic reactor (activated sludge) coupled with microfiltration. Very similar loading rates and removal efficiency was obtained with the anaerobic filters; they allow to treat highly concentrated effluents in a detention time of 10 h but COD removal efficiency was limited to 60%. The higher contact time of up to 7 days in aerobic treatment, coupled with microfiltration, achieves elimination of 85% of COD and 95% of BOD. Nevertheless, loading rates and biomass concentrations remained low and flux on the membranes was heavily restricted.

APA, Harvard, Vancouver, ISO, and other styles

27

Frankin, R. J., W. A. A. Koevoets, W. M. A. van Gils, and A. van der Pas. "Application of the Biobed® Upflow Fluidized Bed Process for Anaerobic Waste Water Treatment." Water Science and Technology 25, no. 7 (April 1, 1992): 373–82. http://dx.doi.org/10.2166/wst.1992.0169.

Full text

Abstract:

Over the past ten years Gist-brocades has been engaged in anaerobic waste water treatment. An in-depth research program concluded in the construction and operation of three full-scale plants for the treatment of yeast processing and pharmaceutical waste waters. Using the operational experience of the fluidized bed biomass-on-carrier systems and incorporating the strong assets of the Upflow Anaerobic Sludge Blanket (UASB) system features a new process was developed, the so-called Upflow Fluidized Bed (UFB) BIOBED® process, which operation appeared to be very successful over a > 3 year period at full scale. The UFB BIOBED® system combines both characteristics of the UASB and FB processes. Biomass is present in a granular form but conditions with respect to upflow velocities for water and gas approach those of the original Fluidized Bed - biomass on carrier - (FB) system.

APA, Harvard, Vancouver, ISO, and other styles

28

Zhang, Dachao, Shi Xu, Philip Antwi, Longwen Xiao, Wuhui Luo, Zuwen Liu, Jianzheng Li, Hao Su, Cheng Lai, and Frederick Ayivi. "Accelerated start-up, long-term performance and microbial community shifts within a novel upflow porous-plated anaerobic reactor treating nitrogen-rich wastewater via ANAMMOX process." RSC Advances 9, no. 45 (2019): 26263–75. http://dx.doi.org/10.1039/c9ra04225c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Pukasievicz, Silvia Regina Machado, Simone Damasceno Gomes, João Guilherme Baggio de Oliveira, and Ana Cláudia Barana. "Upflow Anaerobic Filter for Pet Food Wastewater Treatment." Semina: Ciências Exatas e Tecnológicas 38, no. 1 (October 4, 2017): 55. http://dx.doi.org/10.5433/1679-0375.2017v38n1p55.

Full text

Abstract:

A digestão anaeróbia é um processo largamente utilizado no tratamento de efluentes agroindustriais, onde a maior parte da matéria orgânica está presente na forma dissolvida, além de ser facilmente biodegradável. Neste trabalho foi utilizado um filtro biológico anaeróbio de fluxo ascendente para tratar efluente de uma empresa que processa subprodutos de um frigorífico para produzir ração animal. A Demanda Química de Oxigênio (DQO) do substrato apresentou valores que variaram de 738 a 1102 mg O2 L-1 e teor de Nitrogênio Total Kjeldahl (NTK) de 143 a 723 mg L-1. O filtro foi operado continuamente a temperatura ambiente, com cargas orgânicas que variaram de 0,077 a 1,083 kg COD m-3 d-1 e Tempo de Detenção Hidráulica (TDH) de 240, 168, 120, 72, 48, 24 e 21 horas. Os melhores resultados de remoção de DQO foram obtidos com TDH de 24 horas, onde o efluente apresentou DQO de 154 mg O2 L-1. Pode ser concluído que, nas condições empregadas, o processo de digestão anaeróbia é viável.

APA, Harvard, Vancouver, ISO, and other styles

30

Boller, M. A., and J. Eugster. "Upflow Anaerobic Filtration of a Sugar Containing Wastewater." Water Science and Technology 28, no. 2 (July 1, 1993): 125–34. http://dx.doi.org/10.2166/wst.1993.0090.

Full text

Abstract:

Pretreatment of a sugar containing wastewater from a date processing plant was tested for COD removal in an anaerobic pilot filter over a period of eight months. The filter was operated in the upflow mode and randomly packed with a plastic pipe carrier material. Initial start and restart after a 6-week break, steady state performance on seven different COD load levels ranging from 1.6 to 25 kg COD/m3·d, and filter behavior during reactor acidification were observed. In all examined experimental cases, the anaerobic filter rapidly adapted (5-7 days) to new operating conditions, thus indicating its high process flexibility. Below COD loads of 20 kg COD/m3·d, a COD removal of 90% or more was achieved. The specific CH4 gas production was measured at 0.40 - 0.53 m3 CH4/kg COD removed, and the specific sludge production was quantified at 0.1 kg paniculate COD/kg COD removed throughout the experimental periods. Biomass distribution revealed that 60% was attached to the packing media and 40% was suspended in the pore space. Based on COD profiles along the filter height, conclusions on the reactor flow pattern could be drawn. With the help of a simple reactor model, the experimental results could be used to simulate other process conditions for design considerations.

APA, Harvard, Vancouver, ISO, and other styles

31

Mahmoud, Nidal, Grietje Zeeman, Huub Gijzen, and Gatze Lettinga. "Solids removal in upflow anaerobic reactors, a review." Bioresource Technology 90, no. 1 (October 2003): 1–9. http://dx.doi.org/10.1016/s0960-8524(03)00095-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Puñal, A., R. Méndez, and J. M. Lema. "Multi-Fed Upflow Anaerobic Filter: Development and Features." Journal of Environmental Engineering 124, no. 12 (December 1998): 1188–92. http://dx.doi.org/10.1061/(asce)0733-9372(1998)124:12(1188).

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

O'Flaherty, V., P. N. L. Lens, D. de Beer, and E. Colleran. "Effect of feed composition and upflow velocity on aggregate characteristics in anaerobic upflow reactors." Applied Microbiology and Biotechnology 47, no. 2 (February 21, 1997): 102–7. http://dx.doi.org/10.1007/s002530050896.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Dold, P. L., A. Sam-Soon, I. H. Palmer, and G. v. R. Marais. "Anaerobic Treatment of an Apple Processing Wastewater." Water Science and Technology 19, no. 1-2 (January 1, 1987): 237–47. http://dx.doi.org/10.2166/wst.1987.0205.

Full text

Abstract:

The new generation of anaerobic digestion systems provide a high level of performance under optimal conditions (~ 37°C). However, in practice many influents will be at lower temperatures - heating of digesters presents problems, particularly in developing countries where technical backup is limited. This paper reports on a study of the treatment of a low/medium strength apple juicing waste in an upflow anaerobic sludge blanket reactor (UASB) at temperatures Less than optimal (25°C and 30°C). Maximum loading rates of approximately 12 and 16 kg COD m−3 d−1 were attained at 25°C and 30°C, respectively, for Influent concentrations in the range 2500 to 5000 rag COD ℓ−1. The comparative treatment capacity is In accord with the reported temperature sensitivity of mesophilic anaerobic processes. Formation of pelletised (granular) sludge enabled high upflow velocities and low hydraulic retention times.

APA, Harvard, Vancouver, ISO, and other styles

35

Liu, Yu, Hai-Lou Xu, Shu-Fang Yang, and Joo-Hwa Tay. "Mechanisms and models for anaerobic granulation in upflow anaerobic sludge blanket reactor." Water Research 37, no. 3 (February 2003): 661–73. http://dx.doi.org/10.1016/s0043-1354(02)00351-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Callander, I. J., T. A. Clark, and P. N. McFarlane. "Anaerobic digestion of wood ethanol stillage using upflow anaerobic sludge blanket reactor." Biotechnology and Bioengineering 30, no. 7 (November 1987): 896–908. http://dx.doi.org/10.1002/bit.260300713.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Hansen, Conly L., and Gregery T. West. "Anaerobic digestion of rendering waste in an upflow anaerobic sludge blanket digester." Bioresource Technology 41, no. 2 (January 1992): 181–85. http://dx.doi.org/10.1016/0960-8524(92)90190-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Kosaric, N., R. Blaszczyk, and L. Orphan. "Factors Influencing Formation and Maintenance of Granules in Anaerobic Sludge Blanket Reactors (UASBR)." Water Science and Technology 22, no. 9 (September 1, 1990): 275–82. http://dx.doi.org/10.2166/wst.1990.0092.

Full text

Abstract:

Four, 20 L UASB reactors were operated under different hydrodynamic regimes continuously for more than 150 days. The influence of superficial liquid upflow velocities over the range 0.2 5 to 1.5 m h−1, on granule activity and characteristics was investigated, maintaining constant temperature (35°C), and volumetric loading rate (6.2 g COD L−1 day−1). Reactor pH, COD removal, VFA concentration, bed height and gas production were continuously monitored and evaluated. It was found that hydrodynamic conditions can influence the size of granules, and their settling characteristics. Low upflow velocities (0.25 and 0.5 m h−1), are favourable for granule growth and accumulation. At high upflow velocities (1.0 and 1.5 m h−1), no sludge accumulation and disintegration of larger granules were observed.

APA, Harvard, Vancouver, ISO, and other styles

39

Sivagurunathan, Periyasamy, Parthiban Anburajan, Gopalakrishnan Kumar, Takuro Kobayashi, Kai Qin Xu, Chae-Young Lee, and Sang-Hyoun Kim. "High-rate hydrogen production from galactose in an upflow anaerobic sludge blanket reactor (UASBr)." RSC Advances 6, no. 64 (2016): 59823–33. http://dx.doi.org/10.1039/c6ra09298e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Suraruksa, B., A. Nopharatana, P. Chaiprasert, M. Tanticharoen, and S. Bhumiratana. "Microbial activity of biofilm during start-up period of anaerobic hybrid reactor at low and high upflow feeding velocity." Water Science and Technology 48, no. 8 (November 1, 2003): 79–87. http://dx.doi.org/10.2166/wst.2003.0455.

Full text

Abstract:

With an aim to shorten start-up time of an Anaerobic Hybrid Reactor (AHR), initial biofilm development was studied, particularly at different upflow feeding velocities. At a low (0.01 m·h-1) upflow velocity, initial biofilm was found to develop via the attachment of suspended biomass in the packed zone, while microbial growth on the film was insignificant. Contrarily, with higher (1.0 m·h-1) upflow velocity, initial biofilm development was from both microbial attachment and growth on supporting media. Biofilm thickness was determined using confocal laser scanning microscopy (CLSM), which indicated that the biofilm developed faster with the higher velocity, due to the contribution of the microbial growth on supporting media. When operated beyond the initial biofilm development with the lower velocity, both the activity of acetogens and the methanogens increased, although there was a lower amount of attached biomass on the supporting media. Whereas, both groups were found to decrease with higher upflow velocity, but acidogenic activity increased. It can be concluded that higher upflow velocity positively affected the initial stage of biofilm development and has the potential to accelerate attached biomass on supporting media during the initial phase. Subsequently, the upflow velocity should be reduced to the normal rate to enhance the methanogenic activity.

APA, Harvard, Vancouver, ISO, and other styles

41

Handayani, Novarina Irnaning, Rustiana Yuliasni, Nanik Indah Setianingsih, and Agung Budiarto. "Full Scale Application of Integrated Upflow Anaerobic Filter (UAF)-Constructed Wetland (CWs) in Small Scale Batik Industry Wastewater Treatment." Jurnal Riset Teknologi Pencegahan Pencemaran Industri 11, no. 1 (May 21, 2020): 27–35. http://dx.doi.org/10.21771/jrtppi.2020.v11.no1.p27-35.

Full text

Abstract:

This research aimed to evaluate the implementation of integrated Upflow Anaerobic Filter (UAF)-Constructed Wetlands (CWs) in real condition of wastewater treatment plant in batik small scale industry. The full scale reactor consisted of equalization chamber with HRT of 2 days; Upflow Anaerobic Filter (UAF) with HRT of 6 days, and Horizontal Subsurface Constructed Wetlands (HSSCWs) with HRT of 1.5 days. The UAF- CWs integrated technology was used to treat batik wastewater with COD inlet of 1339 – 2034 mg/L and pH of 9.0 – 9.4. This study showed that single UAF technology alone was able to reduced 56 – 78%, while the integration UAF –wetland technology improved the performance to 85% and reduced the pH into 7.5 – 7.8.

APA, Harvard, Vancouver, ISO, and other styles

42

Kim, Ijung, Sang-Hyoun Kim, Hang-Sik Shin, and Jin-Young Jung. "Lipid Degradation in a Two-Phase Anaerobic SBR and Upflow Anaerobic Sludge Blanket." Proceedings of the Water Environment Federation 2006, no. 10 (January 1, 2006): 2576–92. http://dx.doi.org/10.2175/193864706783751212.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

GANNOUN, H., E. KHELIFI, H. BOUALLAGUI, Y. TOUHAMI, and M. HAMDI. "Ecological clarification of cheese whey prior to anaerobic digestion in upflow anaerobic filter." Bioresource Technology 99, no. 14 (September 2008): 6105–11. http://dx.doi.org/10.1016/j.biortech.2007.12.037.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Lin, Yishan, Yanling He, Zhuo Meng, and Shucheng Yang. "Anaerobic treatment of wastewater containing methanol in upflow anaerobic sludge bed (UASB) reactor." Frontiers of Environmental Science & Engineering in China 2, no. 2 (June 2008): 241–46. http://dx.doi.org/10.1007/s11783-008-0040-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Yılmazer, Gülüm, and Orhan Yenigün. "Two-phase anaerobic treatment of cheese whey." Water Science and Technology 40, no. 1 (July 1, 1999): 289–95. http://dx.doi.org/10.2166/wst.1999.0059.

Full text

Abstract:

Performance of two-phase anaerobic digestion of cheese whey was investigated in a system consisting of a continuous stirred tank reactor (CSTR) as the acidogenic reactor and an upflow anaerobic filter (UFAF) as the methanogenic reactor. The acidogenic reactor was operated at various hydraulic retention times (HRTs) between 18 hours and 4 days. The results showed that an optimum HRT for the acidogenic reactor with the same organic loading rate (OLR) between 0.5-2 g COD/MLSS day was 24 hours. At this retention time the acidification rate increased up to a maximum of 50%. Volatile fatty acids (VFAs) produced in the acidogenic reactor operating at an HRT of 24 hours were 52% acetic acid, with 14% propionic, 27% butyric and 7% isovaleric acids. Operating the acidogenic reactor at this HRT, the effluent was fed to the upflow anaerobic filter. Here HRT was varied between 3-6 days for the best COD removal efficiency and biogas production. At an HRT of 4 days a 90% soluble effluent COD removal efficiency was obtained with an outmost biogas yield of 0.55 m3/kg COD removed.

APA, Harvard, Vancouver, ISO, and other styles

46

Lin, Hsin-Yi, and Chaio-Fuei Ouyang. "Upflow Anaerobic Sludge Digestion in a Phase Separation System." Water Science and Technology 28, no. 7 (October 1, 1993): 133–38. http://dx.doi.org/10.2166/wst.1993.0153.

Full text

Abstract:

This paper aims to expand the knowledge about methods for improving the rate of solids hydrolysis, volatile acid formation and methane gas production. It studies the effects of phase separation and operational modes on the performance of the process. Two systems were investigated. The two-phase system consisted of a CSTR acid-phase digester and an upflow methane-phase digester, the one-phase system comprised of an upflow anaerobic digester. In order to provide optimal contact conditions and recycle liberated indigenous enzymes or cell biomass fractions, continuous recycling of the effluent sludges to the sludge bed of the reactor was used. In general, the nonbiodegradable portion of the substrates contained in the mixed sludges was found to be about 45% on the basis of TVS. The TVS reduction of the two-phase system was 53%, this is higher than in the one-phase system. Methane production rate and methane content were 0.351 l/g TVS added and 66.6%, respectively.

APA, Harvard, Vancouver, ISO, and other styles

47

Noyola, Adalberto, and Gloria Moreno. "Granule production from raw waste activated sludge." Water Science and Technology 30, no. 12 (December 1, 1994): 339–46. http://dx.doi.org/10.2166/wst.1994.0633.

Full text

Abstract:

Granulation is an important characteristic of sludges used in upflow anaerobic sludge blanket (UASB) reactors. As the UASB technology is rapidly spreading, there is a need of granular sludge for inoculation of new reactors, particularly in those countries where anaerobic technologies have been just recently accepted. Alternative sources of inocula are digested sludge, digested manure, septic tank sludges and pond sediments. Raw waste activated sludges have also been identified as a convenient material for reactor seeding, with previous treatment. In this work, anaerobic flocculant sludge obtained from raw waste activated sludge has been granulated with hydraulic stress, in a lab-scale column under different upflow velocities (1 to 50 m h−1). A methodology is proposed for enhancing the quality of non granular anaerobic sludges in batch treatments of less than 8 hours. The granular sludge produced was used as inoculum for a UASB lab scale reactor. The seed sludge improved all its characteristics and maintained the granulation, in spite of the low velocity (0.08 m h−1) applied.

APA, Harvard, Vancouver, ISO, and other styles

48

Pérez-García, M., L. I. Romero-García, R. Rodríguez-Cano, and D. Sales-Márquez. "High rate anaerobic thermophilic technologies for distillery wastewater treatment." Water Science and Technology 51, no. 1 (January 1, 2005): 191–98. http://dx.doi.org/10.2166/wst.2005.0024.

Full text

Abstract:

In this paper, performance of two high rate technologies, upflow anaerobic fixed-film reactor and fluidized bed laboratory-scale, treating distillery wastewater (wine vinasses ) at anaerobic thermophilic conditions have been compared. The results obtained show that the stationary packed bed, with a corrugated plastic support, operated under stable conditions at organic loading rates (OLR0) around 20 kgCOD/m3/d, gives maximal total CODr of 76% at OLR0 of 6.29 kgCOD/m3/d; the fluidized bed reactor, operated on open pore sintered-glass media, gives total CODr of 96% at OLR0 of 5.88 kgCOD/m3/d. The anaerobic fluidized bed technology is more effective than the upflow anaerobic fixed-film technology due, fundamentally, to this technology favouring the transport of microbial cells from the bulk to the surface and enhancing the contact between the microorganism-substrate phases. In this sense, the stationary packed bed technology is adequate for the treatment of easily biodegradable wastewater, or for the cases where elevated percentages of CODr removal are not required, while the fluidized bed technology is especially suitable for treatment of hazardous wastes with recalcitrant compositions.

APA, Harvard, Vancouver, ISO, and other styles

49

Lertsittichai, Sittpong, Pranee Lertsutthiwong, and Chantaraporn Phalakornkule. "Improvement of Upflow Anaerobic Sludge Bed Performance Using Chitosan." Water Environment Research 79, no. 7 (July 2007): 801–7. http://dx.doi.org/10.2175/106143007x175906.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Teresa Certucha-Barragán, María, Evelia Acedo-Félix, Onofre Monge-Amaya, Jesús Leobardo Valenzuela-Garcíab, Francisco Javier Almendariz-Tapia, and Ana Lilia Leal-Cruz. "Copper bioaccumulation in an upflow anaerobic sludge blanket reactor." Chemical Speciation & Bioavailability 21, no. 3 (January 2009): 161–64. http://dx.doi.org/10.3184/095422909x12470568098587.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!