多氟及全氟化合物（PFASs）由于具有特殊的化学和生物稳定性而被广泛应用于国民生产的各个领域，但正是由于PFASs的高稳定性使其难以被普通的化学及生物法降解。而低温等离子体技术（NTP）能够在不投加任何化学药剂的情况下实现PFASs的有效去除，其原因在于NTP能够通过空气放电产生包括还原性高能电子在内的各种活性基团和物理形式的能量，进而实现C-F键及C-C键的断裂。本项目将微纳米气泡与NTP技术耦合起来，通过在微纳米气泡内部放电产生低温等离子体，结合具有两亲性质的PFASs富集于微纳米气泡表面及其难降解疏水端伸入微纳米气泡内部的现象，利用微纳米气泡比表面积大、液下溃灭产生高温、高压的特性实现PFASs的高效降解。本项目将以典型PFASs为处理对象，明确该技术对PFASs的去除机制并探明低温等离子体在微纳米尺度空间的发生情况及机理。本项目的成功实施将为水环境中PFASs的处理提供新思路。

Poly- and perfluoroalkyl substances (PFASs), due to their special chemical and biological stability, have been in widespread use in multiple applications. However, it is because of the high stability of PFASs that they are very difficult to be degraded by common chemical and biological methods. Non-thermal plasma (NTP) can effectively remove PFASs without adding any chemicals. The reason is that NTP can generate various active species through air discharge, including reducing high-energy electrons and various physical-form energy, in turn, the C-F and C-C bond cleavage will occur. This project combines micro-nano bubble technology (FB) with NTP technology to generate low-temperature plasma by discharging in FB in water, utilizing the characteristics of FB with large specific surface area, shrinking under liquid, instantly generating local high temperature and high pressure to increases the removal efficiency of PFASs which have amphiphilic properties and enriched at the gas-liquid interface. This project will treat typical PFASs, and clarify the removal mechanism of the target pollutants and determine the occurrence of plasma in the micro-nano scale space and the FB characteristics sustaining PFASs outside and plasma inside. The successful implementation of this project will provide new ideas for the treatment of PFASs from water environment.