A model to describe the performance of the UASB reactor

Rodríguez-Gómez, Raúl; Renman, Gunno; Moreno, Luis; Liu, Longcheng

doi:10.1007/s10532-013-9656-z

Cited by 15 publications

(12 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An upflow anaerobic sludge bed (UASB) reactor was treated as the connection of several CSTRs, and there was a good agreement between experimental and simulated results. This shows that this variation is acceptable [12].…”

Section: Rc Strategymentioning

confidence: 63%

See 1 more Smart Citation

Approaches for Modeling Anaerobic Granule-Based Reactors

Yang¹

2020

Bacterial Biofilms

View full text Add to dashboard Cite

Anaerobic granule sludge is a self-forming biofilm. This biofilm can be developed without the presence of bio-carriers. Anaerobic granule sludge-based technologies are dominant technologies in the field of anaerobic wastewater treatment. Although they are successful technologies, many efforts are still needed for a better understanding of the granules and granule-based reactors because reactor failure can occur. Here, reactor modeling is highly helpful in understanding the performance of anaerobic bioreactors. A model that can accurately model bioprocesses in a sludge bed reactor and predict concentrations of effluent components is valuable. This is because the model can provide insights into the reactor and be useful in reactor control. Current models of granules are models on bioprocesses in a single granule sludge or on the hydrodynamics and biokinetics in a sludge bed reactor. Here, we review advances in reactor model and its applications as well as limitations and further improvements in the models.

show abstract

Section: Rc Strategymentioning

confidence: 63%

“…Strategies for reactor modeling based on a bioparticle model are reported. However, this reactor modeling strategy is case-specific, and relevant road maps of each strategy are not clearly stated [3,4,12]. By cross-checking these models, a general model strategy is summarized below: i.…”

Section: Reactor Modeling With a Bioparticle Modelmentioning

confidence: 99%

Approaches for Modeling Anaerobic Granule-Based Reactors

Yang¹

2020

Bacterial Biofilms

View full text Add to dashboard Cite

show abstract

“…Huang et al (2006) claimed that 1D biomass spatial heterogeneity is necessary to effectively simulate the performance of an upflow sludge blanket reactor. However, the fact that 28 of the analyzed publications used a homogeneous distribution (Bachmann et al, 1985, Rodriguez-Gomez et al, 2014 or even neglected all intragranule transport processes indicates that these effects are often lumped in apparent kinetic parameters. Moreover, it has been shown that dense micro-colonies of nitrifiers, which can only be described in 2D or 3D, can influence the macroscale kinetics (Picioreanu et al, 2016).…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Modelling anaerobic, aerobic and partial nitritation-anammox granular sludge reactors - A review

Baeten

Batstone

Schraa³

et al. 2019

Water Research

111

View full text Add to dashboard Cite

Wastewater treatment processes with granular sludge are compact and are becoming increasingly popular. Interest has been accompanied by the development of mathematical models. This contribution simultaneously reviews available models in the scientific literature for anaerobic, aerobic and partial nitritation-anammox granular sludge reactors because they comprise common phenomena (e.g. liquid, gas and granule transport) and thus pose similar challenges. Many of the publications were found to have no clearly defined goal. The importance of a goal is stressed because it determines the appropriate model complexity and helps other potential users to find a suitable model in the vast amount of literature. Secondly, a wide variety was found in the model features. This review explains the chosen modelling assumptions based on the different reactor types and goals wherever possible, but some assumptions appeared to be habitual within fields of research, without clear reason. We therefore suggest further research to more clearly define the range of operational conditions and goals for which certain simplifying assumptions can be made, e.g. when intragranule solute transport can be lumped in apparent kinetics and when biofilm models are needed, which explicitly calculate substrate concentration gradients inside granules. Furthermore, research is needed to better mechanistically understand detachment, removal of influent particulate matter and changes in the mixing behaviour inside anaerobic systems, before these phenomena can be adequately incorporated in models. Finally, it is suggested to perform fullscale model validation studies for aerobic and anammox reactors. A spreadsheet in the supplementary information provides an overview of the features in the 167 reviewed models.

show abstract

“…The substrate concentration and the input biomass of a CSTR are the output of the previous CSTR. The division of the UASB reactor into multilevel reactor is determined by utilizing Peclet Number as a dimensionless parameter of the UASB reactor [11]:…”

Section: Simulation Of Kinetic Reaction With Uasb Reactor: the Case Omentioning

confidence: 99%

Dynamical modeling of substrate and biomass effluents in up-flow anaerobic sludge blanket (UASB) biogas reactor

Nugroho

Santoso

2019

Int J Ind Chem

View full text Add to dashboard Cite

Organic liquid waste from food production industry is inevitable. High chemical oxygen demand (COD) contents in organic liquid waste could disrupt the water ecosystem. On the other hand, COD contents can be reduced and utilized to produce biogas by UASB reactor. However, there is a problem in operating UASB reactor, namely the high biomass content in methanogenic granule form, which is washed out with the effluent. The influent flow rate affects biomass content and the suitable flow rate is important for the particular UASB reactor. To investigate the matter, the estimation of Monod parameters is determined to study the kinetics of substrate (COD) and biomass (active methanogenic granule). In this work, simulations of lumped and distributed models are performed to observe the behavior of substrate and biomass inside the reactor. It is concluded that the suitable influent flow rate for UASB reactor is 150-175 m 3 /h, and the washed out biomass content is relatively low (from 0.001393 to 0.4919 kg/m 3). The steady-state condition is achieved from 2027 to 2533 days, with high COD removal.

show abstract

A model to describe the performance of the UASB reactor

Cited by 15 publications

References 52 publications

Approaches for Modeling Anaerobic Granule-Based Reactors

Approaches for Modeling Anaerobic Granule-Based Reactors

Modelling anaerobic, aerobic and partial nitritation-anammox granular sludge reactors - A review

Dynamical modeling of substrate and biomass effluents in up-flow anaerobic sludge blanket (UASB) biogas reactor

Contact Info

Product

Resources

About