东北大学学报(自然科学版) ›› 2024, Vol. 45 ›› Issue (9): 1342-1351.DOI: 10.12068/j.issn.1005-3026.2024.09.016

• 资源与土木工程 • 上一篇    

臭氧催化氧化对城市污水反渗透浓水中有机物的去除特性

夏瑜1(), 刘静1, 何绪文1, 杨洪英2   

  1. 1.中国矿业大学(北京) 化学与环境工程学院,北京 100083
    2.东北大学 冶金学院,辽宁 沈阳 110819
  • 收稿日期:2023-04-17 出版日期:2024-09-15 发布日期:2024-12-16
  • 通讯作者: 夏瑜
  • 作者简介:夏 瑜(1989-),女,湖南衡阳人,中国矿业大学(北京)副教授
    何绪文(1964-),男,湖南涟源人,中国矿业大学(北京)教授,博士生导师
    杨洪英(1960-),女,河北张家口人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金青年基金资助项目(52100067)

Removal Effect of Organics in Reverse Osmosis Concentrate of Municipal Wastewater by Ozone Catalytic Oxidation

Yu XIA1(), Jing LIU1, Xu-wen HE1, Hong-ying YANG2   

  1. 1.School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 100083,China
    2.School of Metallurgy,Northeastern University,Shenyang 110819,China. cn
  • Received:2023-04-17 Online:2024-09-15 Published:2024-12-16
  • Contact: Yu XIA
  • About author:XIA Yu,E-mail:xiayu@cumtb.edu.

摘要:

为有效处理城市污水反渗透浓水(reverse osmosis concentrate,ROC)中有机物及认识其去除特性,采用常规指标、有机物相对分子质量分级和亲疏水分析,色谱-质谱技术及电子顺磁共振分析等研究该废水的臭氧催化氧化处理效果.结果表明:最优处理条件为臭氧质量浓度17 mg/L,原水pH 7.3,反应时间80 min;化学需氧量(chemical oxygen demand,COD)、254 nm波长下紫外吸光度(UV254)、大分子有机物(>30 ku)和疏水酸性组分(hydrophilic acid component,HOA)去除率分别为55.75%,85.05%,95.46%和72.06%;芳香烃、腐殖酸等难降解物及医药和个人护理品(PPCPs)的去除效果显著;产生了活性物质·OH;COD降解符合二级反应动力学模型.

关键词: 臭氧催化氧化, 反渗透浓水, 有机物, 医药和个人护理品(PPCPs)

Abstract:

To effectively remove the organics in municipal wastewater reverse osmosis concentrate (ROC) and understand their removal characteristics, the performance of ozone catalytic oxidation in the treatment of municipal wastewater ROC was studied based on measurements of conventional wastewater quality indices, analyses of relative molecular mass classification and hydrophobic/hydrophilic properties of organic matters, and methods of chromatography?mass spectrometry and electron paramagnetic resonance spectroscopy. The results indicate that the optimal treatment conditions are a reaction time of 80 min, an ozone mass concentration of 17 mg/L, and a raw wastewater pH of 7.3. The removal efficiencies of chemical oxygen demand (COD), UV absorbance at 254 nm wavelength (UV254), large?molecule organics (>30 ku) and hydrophilic acid component (HOA) are 55.75%, 85.05%, 95.46%, and 72.06%, respectively. Refractory organics such as aromatic hydrocarbons and humic acids, as well as pharmaceutical and personal care products (PPCPs) can be efficiently removed. Active substance·OH is generated. The data of COD degradation can be well described by a second?order reaction kinetics model.

Key words: ozone catalytic oxidation, reverse osmosis concentrate, organics, pharmaceutical and personal care products (PPCPs)

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