2019
DOI: 10.1002/wer.1082
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Review of the Factors Affecting Modeling Oxygen Transfer by Fine-Pore Diffusers in Activated Sludge

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Cited by 6 publications
(8 citation statements)
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“…MLSS must be between 10 and 15 g/L to have a basic efficiency in the transfer of oxygen into the biomass [ 33 ]. The range of α-factor on air diffusers is 0.3–0.85 [ 6 ].…”
Section: Resultsmentioning
confidence: 99%
“…MLSS must be between 10 and 15 g/L to have a basic efficiency in the transfer of oxygen into the biomass [ 33 ]. The range of α-factor on air diffusers is 0.3–0.85 [ 6 ].…”
Section: Resultsmentioning
confidence: 99%
“…Furthermore, the higher depth of the AGS reactors contributed to a higher energy usage since the specific energy usage per volume of air increases sharply with the counterpressure for rotary lobe type of blowers (AtlasCopco, 2015; van Leuven et al, 2010) as further detailed below. A higher depth increases the oxygen transfer efficiency, which can be offset by the increased pressure that leads to higher energy usage per volume of air (Baquero‐Rodríguez et al, 2018). In a theoretical comparison of AGS and CAS with EBPR where the same water depth was considered (5 m), the aeration energy usage was estimated to be similar in the two systems (Bengtsson et al, 2019).…”
Section: Discussionmentioning
confidence: 99%
“…Compared to the relatively new AGS technology, CAS processes have been widely studied regarding energy usage, biogas production, and environmental impacts (Foladori et al, 2015; Hao et al, 2018; Llácer‐Iglesias et al, 2021; Silva & Rosa, 2022; Yang et al, 2010). For example, aeration efficiency has been extensively studied for CAS systems (Baquero‐Rodríguez et al, 2018) but scarcely for AGS processes (Strubbe et al, 2023). Similarly, the biogas production process from activated sludge has been broadly studied regarding methods and improvements (Uthirakrishnan et al, 2022), but the studies of waste AGS biogas potential are few (Bernat et al, 2017; Cydzik‐Kwiatkowska et al, 2022; Guo et al, 2020; Jahn et al, 2019).…”
Section: Introductionmentioning
confidence: 99%
“…This inseparable link explains why fine bubbles in thick sludge must necessarily coalesce into coarser bubbles to experience reduced shear during their faster rise. Thus, any fine bubble, regardless of its origin, will have to coalesce to follow the path of least resistance (Baquero Rodriguez et al, 2017). This supports the hypothesis that at some point, the concentration of sludge would be sufficiently high to promote bubble coalescence and de facto nullify the difference between fine bubbles and coarse bubbles.…”
Section: Introductionmentioning
confidence: 99%