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高浓度富里酸在臭氧体系中的降解特性

张爱平 李民 陈炜鸣 施国中 贺莉

张爱平, 李民, 陈炜鸣, 施国中, 贺莉. 高浓度富里酸在臭氧体系中的降解特性[J]. 环境科学研究, 2017, 30(3): 457-463. doi: 10.13198/j.issn.1001-6929.2017.01.64
引用本文: 张爱平, 李民, 陈炜鸣, 施国中, 贺莉. 高浓度富里酸在臭氧体系中的降解特性[J]. 环境科学研究, 2017, 30(3): 457-463. doi: 10.13198/j.issn.1001-6929.2017.01.64
ZHANG Aiping, LI Min, CHEN Weiming, SHI Guozhong, HE Li. Decomposition Characteristics of High Fulvic Acid based on Ozone System[J]. Research of Environmental Sciences, 2017, 30(3): 457-463. doi: 10.13198/j.issn.1001-6929.2017.01.64
Citation: ZHANG Aiping, LI Min, CHEN Weiming, SHI Guozhong, HE Li. Decomposition Characteristics of High Fulvic Acid based on Ozone System[J]. Research of Environmental Sciences, 2017, 30(3): 457-463. doi: 10.13198/j.issn.1001-6929.2017.01.64

高浓度富里酸在臭氧体系中的降解特性

doi: 10.13198/j.issn.1001-6929.2017.01.64
基金项目: 

四川省教育厅项目 15ZB0034

四川省科技厅苗子工程项目 2015039

详细信息
    作者简介:

    张爱平(1979-), 女, 浙江金华人, 教授, 博士, 主要从事特种废水处理与再生资源化技术研究, apzhang@sicnu.edu.cn

  • 中图分类号: X703.1

Decomposition Characteristics of High Fulvic Acid based on Ozone System

Funds: 

 15ZB0034

 2015039

  • 摘要: 为了解高浓度富里酸在臭氧体系中的降解特性,采用了高效且反应条件温和的臭氧法处理高浓度富里酸模拟废水,并采用紫外-可见吸收光谱和三维荧光光谱,研究了臭氧降解高浓度富里酸的特性与原理.结果表明:在初始pH为8.0、臭氧投加量(以ρ计)为65.00 mg/L的条件下,反应30 min后色度、富里酸、CODCr的去除率分别为82.16%、43.28%、26.73%;臭氧利用率从反应2 min时的72.52%降至30 min时的18.15%,B/C[ρ(BOD5)/ρ(CODCr)]由进水的0.27升至0.61,ρ(HCO3-)由初始的42.2 mg/L增至502.6 mg/L,说明小分子有机物的不断生成和矿化使得模拟废水可生化性大幅提高.紫外-可见吸收光谱分析表明,臭氧能使富里酸模拟废水中易降解物质成分增多、富里酸的结构趋于简单.三维荧光光谱表明,臭氧能有效降解大分子富里酸类物质,并较快速地使小分子色氨酸被氧化,随着反应的持续进行,富里酸的腐殖化程度逐渐降低.

     

  • 图  1  试验装置示意

    Figure  1.  Sketch of experimental set-up

    图  2  添加TBA前后富里酸去除率随时间的变化

    Figure  2.  Evolution of fulvic acid removal before and after TBA addition

    图  3  臭氧利用率与污染物指标随时间的变化

    Figure  3.  Evolution of ozone utilization and pollutant indexes

    图  4  可生化性随反应时间的变化

    Figure  4.  Evolution of biodegradability

    图  5  ρ(HCO3-)与体系pH随反应时间的变化

    Figure  5.  Evolution of HCO3- and pH

    图  6  臭氧降解富里酸前后的紫外-可见光谱

    Figure  6.  UV-Vis spectra of fulvic acid before and after ozonation

    图  7  臭氧降解富里酸前后的特征吸光度值

    Figure  7.  Typical absorbance of fulvic acid before and after ozonation

    图  8  臭氧降解富里酸前后的三维荧光光谱

    Figure  8.  3D-EEM spectra of fulvic acid before and after ozonation

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出版历程
  • 收稿日期:  2016-06-17
  • 修回日期:  2016-11-12
  • 刊出日期:  2017-03-25

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