关键词: 微气泡, 纳米气泡, 环境污染控制, 特性

Abstract: Micro-and nano-bubbles have distinctive characteristics which are different from ordinary bubbles，and the applications of micro-and nano-bubble technology in environmental pollution control have attracted more and more attentions in recent years. In this paper，the technical characteristics of micro-bubble and nano-bubbles were introduced in detail mainly on mass transfer intensification，interfacial potential and the release of free radicals. The recent applications of micro-and nano-bubble technology were emphatically illustrated as well，such as the removal of suspended solids，the intensive degradation of organic pollutant and the promotion of biodegradable ability. In addition，the technical advantage and the application prospects were presented and some existed problems on micro-and nano-bubble technology were pointed out，such as how to effectively denitrify，how to obtain optimal conditions coupled with some strong oxidation methods and new environmental pollution restoration technology，as well as how to develop practical nano-bubbles generation with low cost，energy efficiency，superior performance and easy application in broad scope.

Key words: micro-bubble, nano-bubble, environmental pollution control, characteristic