Full-scale validation of an air scour control system for energy savings in membrane bioreactors

Monclús, Héctor; Dalmau, Montserrat; Gabarrón, S.; Ferrero, Giuliana; Rodríguez-Roda, Ignasi; Comas, Joaquím

doi:10.1016/j.watres.2015.03.032

Cited by 32 publications

(11 citation statements)

References 25 publications

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“…With new aeration protocols already in use at some of the large scale plants, these findings are corroborated by recent industrial practice [95,96]. However, as pointed out by Monclús et al [89], these strategies are open loop strategies where an aeration rate is independent from operational or environmental conditions and always follows the same pattern. Further energy reduction can be achieved by implementation of closed-loop aeration strategies.…”

Section: Model-based Approachmentioning

confidence: 56%

“…Furthermore, the air scour systems have evolved so that the energy requirements of the leading manufacturers are often comparable [33]. In addition, recent developments have resulted in considerable aeration improvements, e.g., intermittent or cyclic aeration for membrane air scouring, sparger and module geometry, reusing the air scour between different modules [1,89]. However, despite recent developments, the membrane air scour flow rates applied in practice are generally very conservative relative to the MBR manufacturers' recommendations [89].…”

Section: Commercial Developmentsmentioning

confidence: 99%

“…In addition, recent developments have resulted in considerable aeration improvements, e.g., intermittent or cyclic aeration for membrane air scouring, sparger and module geometry, reusing the air scour between different modules [1,89]. However, despite recent developments, the membrane air scour flow rates applied in practice are generally very conservative relative to the MBR manufacturers' recommendations [89]. For example, Dalmau et al [90] was able to experimentally demonstrate the reduction of aeration for biological and membrane purposes in a pilot scale MBR by 81% and 20%, respectively.…”

Section: Commercial Developmentsmentioning

confidence: 99%

See 2 more Smart Citations

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

375

156

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Membrane bioreactor (MBR) technology is considered a well-established, mature technology with many full-scale plants around the world treating municipal and industrial wastewater. However, membrane fouling and energy consumption still remain serious obstacles and challenges in the wider spread of the MBR technology. Therefore, considerable research and development efforts are still underway. Recent developments are primarily focused on aspects related to energy reduction, fouling control and novel configurations for enhanced process performance. This review addresses the recent work on the above mentioned aspects and it discusses the overall life cycle of MBRs and the market prospects for MBR technology. Novel MBR configurations and integrations with other technologies are also reviewed. Finally, the challenges that need to be addressed in order to facilitate market penetration of MBR technology are highlighted.

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Section: Model-based Approachmentioning

confidence: 56%

Section: Commercial Developmentsmentioning

confidence: 99%

Section: Commercial Developmentsmentioning

confidence: 99%

See 1 more Smart Citation

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

375

156

View full text Add to dashboard Cite

show abstract

“…Sun et al achieved an aeration cost reduction of 20% by ammonium‐feedback automatic control in a full‐scale MBR. Additionally, Monclus et al developed an aeration control method based on the slope ratio between long‐term and short‐term permeability trends, which could decrease energy consumption by 14% in a full‐scale MBR.…”

Section: Resultsmentioning

confidence: 99%

Novel aeration of a large‐scale flat sheet MBR: A CFD and experimental investigation

Wang

Field

2018

AIChE Journal

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Having previously established that the hydrodynamic effect introduced by slug bubbles is more effective and economic in fouling amelioration in flat sheet MBRs (FSMBR) than conventional bubbling, this work is focused on its implementation in a commercial FSMBR. The overall objective is to enhance the hydrodynamic effect on fouling control through the use of two‐stage large‐sized bubble development (coalescence and split). Computational Fluid Dynamics (CFD) was used to predict hydrodynamic features and substantial agreement was observed with experimental measurements. The critical height for bubble development space was determined to be circa 250 mm. Slug bubbles could be introduced into 14 channels, resulting in six‐fold stronger shear stress than that from single bubbles. Energy demand could be reduced by circa 50% compared with industry average usage and the shear stresses developed would, for most applications, be sufficient to ameliorate fouling. Furthermore, the specific air demand per permeate would be halved. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2721–2736, 2018

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“…The goal was twofold: first, the technical objective was to finalize a robust EDSS and valorize it through a proof of concept of the tool's benefits at the full scale over long‐term periods (two years); second, the commercial objective was to foster communication and transfer the plans for the EDSS to the market. Both the research group and the company jointly conducted these valorization projects …”

Section: Analysis Of the Developed Edssmentioning

confidence: 99%

Crossing the Death Valley to Transfer Environmental Decision Support Systems to the Water Market

et al. 2017

Self Cite

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sensors, and the overwhelming evidence of environmental strain and global economic issues caused by the extensive pressure on resources exerted by the demands of growing populations indicate that environmental systems composed of multiple interacting agents or variables that cause emergent behavior require complex manage ment strategies. In addition, improving environment-friendly practices related to the use and/or reuse of natural resources to minimize detrimental effects on the natural environment has become a prominent issue. Therefore, increasingly advanced and sophisticated management tools capable of integrating heuristic knowledge and quantitative and qualitative information are required.The initial concept of a decision support system (DSS) emerged in the business, economics, and management sciences. A DSS is an intelligent information system that reduces the time in which decisions are made within a domain and improves the consistency and quality of these decisions. [1] DSSs use a combination of models, analytical techniques, and information retrieval to help develop and evaluate appropriate alternatives; [2,3] and such systems focus on strategic decisions and not operational ones. More specifically, a DSS should contribute to the reduction of the uncertainty faced by managers when they need to take decisions regarding future options. [4] Similar definitions can be found in ref. [5,6] Environmental decision support systems (EDSSs) are a class of DSS that demonstrates all of the capabilities of a DSS on an environmental field scale. [5,7,8] EDSSs have been increasingly applied in more intense and efficient ways, and an increased number of systems have been developed. A metric of their increasing implementation is that more than 3300 references have been cited on this topic in specialized journals over the last ten years (search on SCOPUS on February 2016).The quality and quantity of available water resources is decreasing because of the intensive use of surface and groundwater by cities, industry and agriculture, and the associated impacts of the point pollution and diffuse discharge of the generated wastewater. [9] The optimal and integrated management of water resources is a paradigmatic example of circumstances in which an EDSS can play an important role by integrating data from different origins and with different quality with infrastructures managed by several public and private actors under different legal frameworks with a final goal of preserving Environmental decision support systems (EDSSs) are attractive tools to cope with the complexity of environmental global challenges. Several thoughtful reviews have analyzed EDSSs to identify the key challenges and best practices for their development. One of the major criticisms is that a wide and generalized use of deployed EDSSs has not been observed. The paper briefly describes and compares four case studies of EDSSs applied to the water domain, where the key aspects involved in the initial conception and the use and transfer evolution that determine...

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Full-scale validation of an air scour control system for energy savings in membrane bioreactors

Cited by 32 publications

References 25 publications

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Novel aeration of a large‐scale flat sheet MBR: A CFD and experimental investigation

Crossing the Death Valley to Transfer Environmental Decision Support Systems to the Water Market

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