Results 211 to 220 of about 16,513 (257)
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Effect of hydraulic retention time on anaerobic hydrogenesis in CSTR
Bioresource Technology, 2006The objective of this work was to evaluate the production of hydrogen in a continuous system as a function of hydraulic retention time (HRT). The intermediates accumulated and other parameters of pH, oxidation-reduction potential were quantified. The heat treatment (103 degrees C for 24 h) of the compost from a cattle dung composting facility was able ...
Kuo-Shuh, Fan +2 more
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The effect of hydraulic retention time on the stability of aerobically grown microbial granules [PDF]
Letters in Applied Microbiology, 2004 The aim of this study is to evaluate the effect of hydraulic retention time (HRT) on the development of aerobically grown microbial granules.Five column-shaped sequential aerobic sludge blanket reactors (SASBRs) were seeded with aerobically grown microbial granules and operated in a cyclic mode at different HRTs.
J-H Tay, J -H Tay, S T -L Tay
exaly +3 more sources
Environmental Technology, 2022
In this study, simultaneous nitrification and denitrification-sequencing batch reactor (SND-SBR) process was investigated to treat greywater. The effect of three process parameters, including hydraulic retention time (HRT), volumetric exchange ratio (VER) and sludge retention time (SRT), was optimised using a 23 full factorial design.
Kumari, Priyanka +2 more
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In this study, simultaneous nitrification and denitrification-sequencing batch reactor (SND-SBR) process was investigated to treat greywater. The effect of three process parameters, including hydraulic retention time (HRT), volumetric exchange ratio (VER) and sludge retention time (SRT), was optimised using a 23 full factorial design.
Kumari, Priyanka +2 more
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Three-Dimensional Modeling for Estimation of Hydraulic Retention Time in a Reservoir
Journal of Environmental Engineering, 2006A three-dimensional computational fluid dynamics model is used to estimate the hydraulic residence time for a portion of the Wachusett Reservoir in central Massachusetts. The basin under consideration has several major inflows and exhibits complex flow patterns.
Kennedy, MG +3 more
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Impact of the Hydraulic Retention Time on the Performance of a Sulfidogenic Bioreactor
Advanced Materials Research, 2013Treatment of acidic Fe (II)- and sulfate-rich mine waters represents a major problem in many areas of the world. Therefore, a process was developed which utilises naturally occurring sulfate-reducing microorganisms for the elimination of sulfate and of part of the acidity from the acidic mine water.
Robert Klein +6 more
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Is hydraulic retention time an essential parameter for MBR performance?
Journal of Hazardous Materials, 2008The effect of hydraulic retention time (HRT) on membrane bioreactors (MBR) operation is discussed. A brief literature review on this topic indicates that biased conclusions can be drawn if data is obtained under non steady-state conditions. Another relevant aspect regarding steady-state operation includes activated sludge adaptation to bioreactor ...
Aline F, Viero, Geraldo L, Sant'anna
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Environmental Technology, 2007
The effect of hydraulic retention time (HRT) and solid retention time (SRT) on the biodegradation of a synthetic wastewater containing nitrobenzene was investigated in a sequential anaerobic migrating blanket reactor (AMBR) and aerobic completely stirred tank reactor (CSTR) system.
Sponza, D. T., Kuscu, O. S.
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The effect of hydraulic retention time (HRT) and solid retention time (SRT) on the biodegradation of a synthetic wastewater containing nitrobenzene was investigated in a sequential anaerobic migrating blanket reactor (AMBR) and aerobic completely stirred tank reactor (CSTR) system.
Sponza, D. T., Kuscu, O. S.
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Effects of temperature and hydraulic retention time on anaerobic digestion of food waste
Journal of Bioscience and Bioengineering, 2006A modified three-stage methane fermentation system was developed to digest food waste efficiently. This system consisted of three stages: semianaerobic hydrolysis, anaerobic acidogenesis and strictly anaerobic methanogenesis. In this study, we examined the effects of temperature and hydraulic retention time (HRT) on the methanogenesis.
Jung Kon, Kim +3 more
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Influence of hydraulic retention time on indigenous microalgae and activated sludge process
Water Research, 2016Integration of the microalgae and activated sludge (MAAS) process in municipal wastewater treatment and biogas production from recovered MAAS was investigated by studying the hydraulic retention time (HRT) of semi-continuous photo-bioreactors. An average total nitrogen (TN) removal efficiency (RE) of maximum 81.5 ± 5.1 and 64.6 ± 16.2% was achieved at ...
Anbarasan, Anbalagan +3 more
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Bioresource Technology, 2016
Anaerobic baffled reactors (ABRs) have been widely used in engineering but very few models have been developed to simulate its performance. Based on the integration of biomass retention and liquid-gas mass transfer of biogas into the biochemical process derived in the International Water Association (IWA) Anaerobic Digestion Model No.1 (ADM1), a ...
Jianzheng, Li +3 more
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Anaerobic baffled reactors (ABRs) have been widely used in engineering but very few models have been developed to simulate its performance. Based on the integration of biomass retention and liquid-gas mass transfer of biogas into the biochemical process derived in the International Water Association (IWA) Anaerobic Digestion Model No.1 (ADM1), a ...
Jianzheng, Li +3 more
openaire +2 more sources