Research progress of persulfate-assisted discharge plasma technology in wastewater treatment

doi:10.19965/j.cnki.iwt.2021-0510

Abstract

Abstract:

By reading and summarizing the literature in relevant fields at home and abroad，the development status and inherent defects of traditional physical，chemical and biological wastewater treatment technologies and processes were explored. It was found that the emerging discharge plasma technology and its related combined processes in recent years had great advantages such as energy saving，high efficiency and no secondary pollution in water treatment. So the application of persulfate-assisted discharge plasma，that a new advanced oxidation technology in wastewater treatment，was systematically summarized. The basic characteristics of discharge plasma technology，persulfate activated oxidation technology and their synergy were generally covered. The formation process and oxidation mechanism of hydroxyl radical and sulfate radical were introduced，and the research progress and application prospect of this technology in wastewater treatment by enumerating the major achievements of relevant scientific practice were comprehensively expounded. On these bases，the possible action pathway and reaction mechanism of the new water treatment technology for degrading various toxic organic wastewater were also analyzed，the main defects of the existing discharge plasma water treatment technology were discussed，and the future improvement objectives of the new water treatment technology and the practical requirements for its comprehensive industrialization and large-scale application were pointed out.

Key words: persulfate, discharge plasma, synergistic effect, advanced oxidation, wastewater treatment

摘要：

通过阅读并汇总国内外相关领域文献，探究了传统的物理、化学、生物废水处理技术与工艺的发展现状和固有缺陷，发现近年来新兴的放电等离子体技术及其有关组合工艺在水处理中具有节能、高效、无二次污染等巨大优势，由此对过硫酸盐辅助放电等离子体这一新型高级氧化技术在废水处理中的应用进行了系统的归纳和综述。综述总体涵盖了放电等离子体技术、过硫酸盐活化氧化技术和二者协同作用的基本特点，介绍了羟基自由基和硫酸根自由基的生成过程和氧化机制，并且通过列举有关科学实践的重大成果全面地阐述了该项技术用于废水处理的研究进展和应用前景。在此基础上，探析了该项水处理新技术降解各类有毒有机废水可能的作用途径以及反应机理，讨论了现有放电等离子体水处理技术的主要缺陷，并且指明了该项新型水处理技术未来改进的目标和全面推向产业化、规模化应用的实际要求。

关键词: 过硫酸盐, 放电等离子体, 协同作用, 高级氧化, 废水处理

CLC Number:

X703

Xiaoyong QIU, Changhe YANG. Research progress of persulfate-assisted discharge plasma technology in wastewater treatment[J]. Industrial Water Treatment, 2022, 42(7): 44-51.

邱晓涌, 杨长河. 过硫酸盐辅助放电等离子体处理废水研究进展[J]. 工业水处理, 2022, 42(7): 44-51.

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URL: https://www.iwt.cn/EN/10.19965/j.cnki.iwt.2021-0510

https://www.iwt.cn/EN/Y2022/V42/I7/44

Figures/Tables 3

References 28

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