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超临界水氧化处理棉纺织品印染废水

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王齐, 吕永康, 张荣, 毕继诚. 超临界水氧化处理棉纺织品印染废水[J]. 环境工程学报, 2012, 6(11): 3959-3964.
引用本文: 王齐, 吕永康, 张荣, 毕继诚. 超临界水氧化处理棉纺织品印染废水[J]. 环境工程学报, 2012, 6(11): 3959-3964.
shu
Wang Qi, Lü Yongkang, Zhang Rong, Bi Jicheng. Supercritical water oxidation of cotton textiles dyeing wastewater[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3959-3964.
Citation: Wang Qi, Lü Yongkang, Zhang Rong, Bi Jicheng. Supercritical water oxidation of cotton textiles dyeing wastewater[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3959-3964.
shu

超临界水氧化处理棉纺织品印染废水

  • 1.

    太原理工大学化学化工学院,太原 030024

  • 2.

    太原科技大学化学与生物工程学院,太原 030021

  • 3.

    中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原 030001

  • 基金项目:

    国家自然科学基金资助项目(20506028)

  • 中图分类号: X791

Supercritical water oxidation of cotton textiles dyeing wastewater

  • 1.

    College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

  • 2.

    School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030021,China

  • 3.

    State Key Laboratory for Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

  • Fund Project:

  • 摘要: 在温度400~600℃、压力25 MPa、停留时间10~45 s、过氧比0%~400% 条件下,用超临界水氧化(SCWO)法在连续管式反应器中处理棉纺织品印染废水。分析了工艺条件对总有机碳(TOC)及氨氮(NH3-N)降解效率的影响。研究表明,温度是影响TOC降解的最重要因素,不同温度下,降解率随过氧比变化的趋势不同。在450℃、停留时间20 s、过氧比300% 时,废水TOC降解达98.94%。NH3-N的降解与反应温度和氧化剂量密切相关。当过氧比300%,温度从400℃上升到600℃时,NH3-N的浓度从55.42 mg/L下降到3.31 mg/L,而600℃没有氧化剂存在时氨不易降解。450℃时随着过氧比增大NH3-N浓度略有下降,在该温度下停留时间延长对NH3-N降解无显著影响。
    Abstract: Cotton textiles dyeing wastewater was treated by supercritical water oxidation (SCWO) in a continuous flow tubular reactor using hydrogen peroxide (H2O2) as an oxidant. The degradation of total organic carbon(TOC)and the ammonia and nitrogen(NH3-N)were studied at the temperature range of 400~600℃,25 MPa,residence time bewteen 10~45 s and excess oxygen varying from 0%~400%. The results showed that temperature is the most important factor influencing TOC degradation. The TOC degradation efficiency varies with excess oxygen at different temperatures. At 450℃, 20 s and excess O2 300％, the degradation efficiency of TOC is 98.94％. The degradation of NH3-N is closely related to temperature and excess oxygen of the reaction. When excess oxygen of 300%, the NH3-N concentration decreases from 55.42 mg/L to 3.31 mg/L as the temperature increases from 400℃ to 600℃. When oxidizing agent is absent at 600℃, the degradation of NH3 is difficult. The effects of excess oxygen and residence time of the reaction on the NH3 degradation are not obvious at 450℃.
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  • [1] 朱虹,孙杰. 印染废水处理技术. 北京:中国纺织出版社,2004.189-215
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出版历程
  • 收稿日期:  2011-10-14
  • 刊出日期:  2012-11-09
王齐, 吕永康, 张荣, 毕继诚. 超临界水氧化处理棉纺织品印染废水[J]. 环境工程学报, 2012, 6(11): 3959-3964.
引用本文: 王齐, 吕永康, 张荣, 毕继诚. 超临界水氧化处理棉纺织品印染废水[J]. 环境工程学报, 2012, 6(11): 3959-3964.
shu
Wang Qi, Lü Yongkang, Zhang Rong, Bi Jicheng. Supercritical water oxidation of cotton textiles dyeing wastewater[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3959-3964.
Citation: Wang Qi, Lü Yongkang, Zhang Rong, Bi Jicheng. Supercritical water oxidation of cotton textiles dyeing wastewater[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 3959-3964.
shu

超临界水氧化处理棉纺织品印染废水

  • 1.  太原理工大学化学化工学院,太原 030024
  • 2.  太原科技大学化学与生物工程学院,太原 030021
  • 3.  中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原 030001
  • 收稿日期:  2011-10-14
基金项目:

国家自然科学基金资助项目(20506028)

摘要: 在温度400~600℃、压力25 MPa、停留时间10~45 s、过氧比0%~400% 条件下,用超临界水氧化(SCWO)法在连续管式反应器中处理棉纺织品印染废水。分析了工艺条件对总有机碳(TOC)及氨氮(NH3-N)降解效率的影响。研究表明,温度是影响TOC降解的最重要因素,不同温度下,降解率随过氧比变化的趋势不同。在450℃、停留时间20 s、过氧比300% 时,废水TOC降解达98.94%。NH3-N的降解与反应温度和氧化剂量密切相关。当过氧比300%,温度从400℃上升到600℃时,NH3-N的浓度从55.42 mg/L下降到3.31 mg/L,而600℃没有氧化剂存在时氨不易降解。450℃时随着过氧比增大NH3-N浓度略有下降,在该温度下停留时间延长对NH3-N降解无显著影响。

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