水力空化技术在水处理领域的研究进展

Research Progress on the Application of Hydrodynamic Cavitation in Water Treatment

水力空化作为一种复杂水动力学现象,在环境化学领域中是一种先进的氧化工艺,具有操作成本低、能源效率高、协同应用强及适用范围广等优点,已成为一种很有发展潜力与应用前景的废水处理方法与技术,研究不同类型水力空化发生器对污染物降解效率的影响,以及水力空化协同其它高级氧化技术处理废水是目前研究人员的热门课题.本文系统概述和分析了空化基本理论及水力空化在水处理领域的研究进展与发展趋势.综述了空化成因、分类及其影响因素,总结了不同类型水力空化发生器及其特征,对比归纳了水力空化协同过氧化氢、臭氧、芬顿反应及光催化等联合方法降解有机污染物的进展.结合当前水处理领域发展需求和水力空化降解有机污染物研究方法中存在的不足,对水力空化用于水处理发展方向进行了分析展望.引用文献118篇.

Hydrodynamic cavitation as a kind of complex hydrodynamic phenomenon,is an advanced oxidation processes in the field of environmental chemistry.The cavitation-based oxidation technology owns the merits of cost-effectiveness in operation,higher energy efficiencies,strong collaborative capability and wide-scale applications,and it has become a promising method and technology for waste water treatment.The investigations of the influence of different cavitation reactors on the degradation performance and the synergistic effects of hybrid advanced oxidation processes(AOPs)based on hydrodynamic cavitation to treat waste water are popular among researchers.In the present work,the fundamentals of cavitation,and its research progress in the field of water treatment were reviewed and analyzed.In detail,we systematically introduced the formation mechanism,classification and influencing factors of cavitation.Followed is the summary of the characteristics of various cavitation generators.The progress in degradation of organic pollutants through the combined oxidation processes between hydrodynamic cavitation and hydrogen peroxide,ozone,Fenton reaction and photocatalysis,respectively,were compared and discussed.Based on the development requirements of waste water treatment and the insufficiency of the research methods of the degradation of organic pollutants by hydrodynamic cavitation,the future development direction of hydrodynamic cavitation in water treatment was analyzed and prospected.A total number of 118 for the references were reviews in present work.