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Microbubble- and nanobubble-aeration for upgrading conventional activated sludge process: A review by Sining Zhou; Min Liu; Ben Chen; Lianpeng Sun; Hui Lu is a Engineering article available to read on EtoBox.

What is Microbubble- and nanobubble-aeration for upgrading conventional activated sludge process: A review about?

The activated sludge process (ASP) is widely used for wastewater treatment, and the aeration efficiency is crucial to the operation of wastewater treatment plants. Recently, microbubble (MB)-and nanobubble (NB)-aeration has attracted much attention as there is growing evidence that it holds a great promise for upgrading the process efficiency of current ASP under conventional macro-bubble-aeration. However, a comprehensive review to elucidate the potential application of MB-and NB-aeration in ASP is still lacking. Therefore, this review will provide a systematic introduction to MB-and NB-aeration (including the unique properties and generation methods of MBs and NBs), and gain mechanistic insights on how MB-and NB-aeration improve gas-liquid mass transfer. The recent advances in MB-and NB-aeration applications to ASP and the resultant effects are also highlighted and discussed in-depth. The review concludes with a brief consideration of future research interests.

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Author

Sining Zhou; Min Liu; Ben Chen; Lianpeng Sun; Hui Lu

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)