化工进展 ›› 2020, Vol. 39 ›› Issue (12): 4798-4811.DOI: 10.16085/j.issn.1000-6613.2020-1039

• 专栏:化工过程强化 • 上一篇    下一篇

超重力强化臭氧高级氧化技术的研究进展

邵圣娟1,2(), 焦纬洲1(), 刘有智1   

  1. 1.中北大学山西省超重力化工工程技术研究中心,山西 太原 030051
    2.太原工业学院化学与化工系,山西 太原 030008
  • 出版日期:2020-12-05 发布日期:2020-12-02
  • 通讯作者: 焦纬洲
  • 作者简介:邵圣娟(1987—),女,博士研究生,讲师,研究方向为超重力化工过程强化。E-mail:632018055@qq.com
  • 基金资助:
    山西省重点研发计划(201903D321059);山西省高等学校科技成果转化培育项目(2020CG040);山西省留学人员科技活动项目择优资助经费项目(20200004)

Research progress of high gravity enhanced ozone-based advanced oxidation technology

Shengjuan SHAO1,2(), Weizhou JIAO1(), Youzhi LIU1   

  1. 1.Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China, Taiyuan 030051, Shanxi, China
    2.Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, Shanxi, China
  • Online:2020-12-05 Published:2020-12-02
  • Contact: Weizhou JIAO

摘要:

臭氧高级氧化技术因其绿色高效、适用性广、操作简便等优势,成为当前水处理领域前沿技术之一,但臭氧在传统反应器内普遍存在吸收效果差,臭氧利用率低等缺陷。旋转填料床(RPB)利用高速旋转的填料产生超重力场,将液体剪切破碎为细小的液膜、液丝或液滴,其较高的相界面积、不断更新的界面以及内部流体的强制湍动,加快了臭氧的传质与分解,该技术对于传质受限的臭氧高级氧化过程的强化有着突出的优势。本文简述了超重力强化臭氧氧化过程的原理,介绍了RPB与O3、O3/H2O2、O3/Fenton、O3/PS(过硫酸盐)、催化臭氧氧化等高级氧化法耦合应用处理有机废水的研究现状,并对超重力技术的优势及技术突破进行了述评,总结了超重力应用臭氧高级氧化技术的潜在经济效益和环境效益,提出功能化填料及大型RPB的开发需求,以期为超重力技术在废水处理领域的拓展应用提供理论基础和技术参考。

关键词: 超重力, 臭氧, 多相流, 传质, 分解, 废水

Abstract:

Ozone-based advanced oxidation process (AOP) is one of the cutting-edge technologies in wastewater treatments due to its advantages of green-efficiency, wide applicability and simple operation. However, its absorption and utilization efficiency in traditional reactors is low. Rotating packed bed (RPB) applies high-speed rotating packing to generate high-gravity, splitting the liquid into thin film, filaments or small droplets. Hence, the mass transfer and decomposition efficiency of ozone can be significantly enhanced by the high gas-liquid interface area, interface renewal rate, and forced turbulence of internal fluid. This technology has the prominent advantages for the strengthening of ozone-based advanced oxidation process with limited mass transfer. In this study, the principle of enhanced ozonation by high gravity as well as the coupling applications of high gravity with AOPs such as O3, O3/H2O2, O3/Fenton, O3/PS, and catalytic ozonation in organic-based wastewater treatments are introduced. The advantages and technological breakthroughs of high gravity are discussed, and its potential economic and environmental benefits in wastewater treatments are summarized. The development of novel functional packing and large-scale RPB is proposed. This study could provide theoretical and technical implications for the industrial amplifications.

Key words: high gravity, ozone, multiphase flow, mass transfer, decomposition, wastewater

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