摘要
近年来,微纳米气泡技术受到环境科学和水处理领域研究学者的关注。与常规臭氧高级氧化技术相比,微纳米气泡具有氧化效率高、能耗低及无二次污染等优势,主要原因是微纳米气泡具有比表面积大、停留时间长、传质效率高、界面Zeta(ζ)电位高等独特的理化性质。界面ζ电位紧密关联着气泡在水中的稳定性及与污染物的相互作用,当ζ电位绝对值高时,气泡分散性好、吸附能力强、增氧效率高、臭氧强化度高。本文介绍了微纳米气泡基本特性、ζ电位概念及3种ζ电位检测手段(电泳法、流动电位法和电声法),分析了检测方法的适用范围和优缺点等,论述了微纳米气泡电位在气浮工艺、水体修复和工业废水等领域的应用情况,可为精确调控ζ电位处理不同水质环境的理论研究和实际应用提供指导。
In recent years,micro-nano bubbles technology has been investigated by researchers in environmental science and water treatment.Compared to conventional ozone-based advanced oxidation technology,the advantages of micro-nano bubbles are demonstrated through high oxidation efficiency,low energy consumption,and the absence of secondary pollution.These advantages are primarily attributed to the unique physicochemical properties of micro-nano bubbles,such as a large specific surface area,prolonged residence time,high mass transfer efficiency,and elevated interfacial Zeta(ζ)potential.The interfaceζpotential is closely related to the stability of bubbles in water and the interaction with pollutants.When the absolute value of theζpotential is maintained at a high level,several enhanced properties are observed,including dispersibility improvement,strong adsorption capacity,high oxygenation efficiency,and ozone-enhanced oxidation effects.In this paper,the fundamental characteristics of micro-nano bubbles,the concept ofζpotential,and threeζpotential detection methods(electrophoresis,streaming potential,and electroacoustic techniques)are systematically introduced.Furthermore,the application scope,advantages,and limitations of these detection methods are analyzed to evaluate their practical utility.The application potential of micro-nano bubbles is discussed in the context of air flotation processes,water body restoration,and industrial wastewater treatment.This analysis is regarded as providing critical guidance for both theoretical research and practical implementation,particularly in achieving precise control ofζpotential to address diverse water quality conditions.
作者
张哲
方雨菲
王靖迪
马乐乐
夏维
刘欣宇
肖巍
ZHANG Zhe;FANG Yufei;WANG Jingdi;MA Lele;XIA Wei;LIU Xinyu;XIAO Wei(School of Resources Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China)
出处
《中南大学学报(自然科学版)》
北大核心
2025年第6期2203-2215,共13页
Journal of Central South University:Science and Technology
基金
陕西省创新能力支撑计划项目(2023-CX-TD-50)。
关键词
微纳米气泡
Ζ电位
电泳法
流动电位法
电声法
水处理
micro-nano bubbles
ζpotential
electrophoresis
streaming potential
electroacoustics
water treatment
