工业水处理 ›› 2020, Vol. 40 ›› Issue (1): 29-32, 111. doi: 10.11894/iwt.2018-1070

• 试验研究 • 上一篇    下一篇

臭氧处理分散染料生产废水的效率与机理研究

孙志强1(),袁东2,韩广业3,荆明阳1,4,高灿柱1,刘汝涛1,2,牛启桂1,*()   

  1. 1. 山东大学环境科学与工程学院, 山东青岛 266237
    2. 齐鲁师范学院化学与化工学院, 山东济南 250013
    3. 山东环投环境工程有限公司, 山东济南 250300
    4. 蓬莱嘉信染料化工股份有限公司, 山东烟台 264000
  • 收稿日期:2019-03-08 出版日期:2020-01-20 发布日期:2020-01-16
  • 通讯作者: 牛启桂 E-mail:szq2013ban@163.com;niuqg@sdu.edu.cn
  • 作者简介:孙志强(1993-),硕士在读。电话:17862956529, E-mail:szq2013ban@163.com
  • 基金资助:
    国家自然科学基金项目(21777088);国家自然科学青年基金项目(51608304);山东省科技创新项目(201540306008)

Research on the efficiency and mechanism of the treatment of wastewater from disperse dye production by ozone oxidation

Zhiqiang Sun1(),Dong Yuan2,Guangye Han3,Mingyang Jing1,4,Canzhu Gao1,Rutao Liu1,2,Qigui Niu1,*()   

  1. 1. School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
    2. Department of Chemistry and Chemical Engineering, Qilu Normal University, Ji'nan 250013, China
    3. Shandong Huantou Environmental Engineering Co., Ltd., Ji'nan 250300, China
    4. Penglai Jiaxin Dye Chemical Co., Ltd., Yantai 264000, China
  • Received:2019-03-08 Online:2020-01-20 Published:2020-01-16
  • Contact: Qigui Niu E-mail:szq2013ban@163.com;niuqg@sdu.edu.cn
  • Supported by:
    国家自然科学基金项目(21777088);国家自然科学青年基金项目(51608304);山东省科技创新项目(201540306008)

摘要:

采用臭氧氧化处理分散染料实际生产废水,紫外-可见吸收光谱分析表明,碱性条件下芳香族有机物去除率约为酸性条件下的1.23倍,弱酸性条件下苯并异噻唑类有机物去除率为酸性条件下的1.05倍。碱性条件下废水的臭氧氧化以HO·氧化为主,其对特征指标UV254、UV350、UV435的去除速率分别为臭氧的22、7.5、180倍,同时实现有机物结构破坏和矿化。废水中的主要有机物为苯胺类和苯并异噻唑类,其助色基和生色基被氧化脱落,生成硝基苯、苯酚及有机酸等。

关键词: 臭氧氧化, 染料废水, 降解路径

Abstract:

Ozone oxidation method has been used for treating the wastewater from actual disperse dye production. The results of UV-visible absorption spectrum analysis show that the removing rates of aromatic organic substances under alkalineconditions are about 1.23 times of that under acidic conditions. The removing rates of isothiazole organic substances under weak acid conditions are 1.05 times of that under acidic conditions. The ozone oxidation of wastewater under alkaline conditions is dominated by HO· oxidation, by which the removing rates of the characteristic indexes (UV254, UV350, UV435) are 22 times, 7.5 times and 180 times of ozone, respectively, realizing the mineralization of organic substances at the same time. The main organic substances in the wastewater are anilines and benzisothiazoles, and their auxochrome and chromophore are oxidized and shedded to form nitrobenzene, phenol, organic acids, etc.

Key words: ozone oxidation, dye wastewater, degradation pathway

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