Direct observation of flow and bubble behavior in flat sheet modules with a distributor

Wang, Tao; He, Xinping; Wu, Zhen; Li, Jiding

doi:10.1039/c6ra25880h

Cited by 2 publications

(1 citation statement)

References 44 publications

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“…Air-scouring as a fouling prevention technique is generally a successful option in membrane bioreactor applications [52]. Our results suggest that module configuration is an essential parameter to consider when applying air-scouring, alongside aeration intensity, optimum bubble size and membrane contact [53]. Applying air-scouring for membrane fouling prevention is expected to be more viable in a submerged membrane configuration.…”

Section: Parametermentioning

confidence: 83%

Physical cleaning techniques to control fouling during the pre-concentration of high suspended-solid content solutions for resource recovery by forward osmosis

Ansari

Hai

et al. 2018

Desalination

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The fouling propensity of digested sludge centrate, and the effectiveness of membrane flushing, air-scouring, and ultrasonication for physical cleaning were systematically evaluated. Accelerated fouling conditions were applied to simulate the long-term and intensive pre-concentration scenario that is required for phosphorus recovery from digested sludge centrate. The results suggest that membrane fouling during forward osmosis operation to pre-concentrate digested sludge centrate is mostly due to the deposition of small mineral crystals and particulate matter on the membrane surface. Both high cross-flow velocity flushing and ultrasonication were effective at preventing membrane fouling under accelerated fouling conditions. Our results also highlight the potential of intermittent membrane cleaning for achieving a higher cumulative permeate volume and lower energy consumption in comparison to continuous application to prevent membrane fouling. Among several physical cleaning regimes investigated in this study, the combination of ultrasonication and high cross-flow velocity flushing was the most effective and could maintain stable FO operation over several repetitive cleaning cycles.

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Section: Parametermentioning

confidence: 83%

Physical cleaning techniques to control fouling during the pre-concentration of high suspended-solid content solutions for resource recovery by forward osmosis

Ansari

Hai

et al. 2018

Desalination

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Cathode optimization and multi-physics simulation of pulse electrochemical machining for small inner-walled ring grooves

Zhang

Yan

et al. 2019

Int J Adv Manuf Technol

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Direct observation of flow and bubble behavior in flat sheet modules with a distributor

Abstract: The air sparging method was widely used in membrane modules to enhance performance of separation. In this article, bubble behavior in tubular and flat sheet flow module with different air sparging devices was investigated.

Cited by 2 publications

References 44 publications

Physical cleaning techniques to control fouling during the pre-concentration of high suspended-solid content solutions for resource recovery by forward osmosis

Physical cleaning techniques to control fouling during the pre-concentration of high suspended-solid content solutions for resource recovery by forward osmosis

Cathode optimization and multi-physics simulation of pulse electrochemical machining for small inner-walled ring grooves

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