Open AccessBasic characteristics and application of micro-nano bubbles in water treatment
Author(s) -
Mengdi Zhang,
Liping Qiu,
Guicai Liu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/510/4/042050
Subject(s) - sewage treatment , advanced oxidation process , environmental science , process (computing) , zeta potential , materials science , process engineering , environmental engineering , wastewater , nanotechnology , engineering , computer science , nanoparticle , operating system
Recently, micro-nano bubbles (MNBs) have been widely used as a highly efficient and environmentally friendly gas-liquid phase treatment process in sewage and wastewater treatment, aquaculture agriculture, and water ecosystem restoration. In this article, the basic characteristics of MNBs with long residence time, high zeta potential at the interface, generation of hydroxyl radicals, and high mass transfer efficiency were introduced. Firstly, the methods of generating MNBs including hydraulic cavitation, particle cavitation, sonic explanation, electrochemical cavitation were emphasized. Then, the application status of MNBs in water oxygenation, pollutant degradation, and membrane cleaning were discussed. These reviews are expected to provide guidance for the theoretical research and practical application of MNBs.