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UV/O3-Na2S2O8处理活性炭再生冷凝废水效能及机理

王燕 邹吕熙 茆林凤 陈亚丽 李激

王燕, 邹吕熙, 茆林凤, 陈亚丽, 李激. UV/O3-Na2S2O8处理活性炭再生冷凝废水效能及机理[J]. 环境工程, 2020, 38(7): 38-44. doi: 10.13205/j.hjgc.202007006
引用本文: 王燕, 邹吕熙, 茆林凤, 陈亚丽, 李激. UV/O3-Na2S2O8处理活性炭再生冷凝废水效能及机理[J]. 环境工程, 2020, 38(7): 38-44. doi: 10.13205/j.hjgc.202007006
WANG Yan, ZOU Lv-xi, MAO Lin-feng, CHEN Ya-li, LI Ji. EFFICIENCY AND MECHANISM OF UV/O3-Na2S2O8 IN TREATING ACTIVATED CARBON REGENERATION CONDENSATE WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 38-44. doi: 10.13205/j.hjgc.202007006
Citation: WANG Yan, ZOU Lv-xi, MAO Lin-feng, CHEN Ya-li, LI Ji. EFFICIENCY AND MECHANISM OF UV/O3-Na2S2O8 IN TREATING ACTIVATED CARBON REGENERATION CONDENSATE WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 38-44. doi: 10.13205/j.hjgc.202007006

UV/O3-Na2S2O8处理活性炭再生冷凝废水效能及机理

doi: 10.13205/j.hjgc.202007006
基金项目: 

国家水体污染控制与治理科技重大专项(2017ZX07202-001-004)。

详细信息
    作者简介:

    王燕(1987-),女,博士,主要研究方向为废水处理工程。wangyanjnhj@126.com

    通讯作者:

    李激(1970-),女,博士,教授,主要研究方向为水污染控制与资源化。liji@jiangnan.edu.cn

EFFICIENCY AND MECHANISM OF UV/O3-Na2S2O8 IN TREATING ACTIVATED CARBON REGENERATION CONDENSATE WASTEWATER

  • 摘要: 过热蒸汽法再生活性炭的过程中会产生大量含难降解有机物的冷凝废水,为去除冷凝废水中难降解COD,提高可生化性,采用紫外/臭氧活化过硫酸盐(UV/O3-Na2S2O8)氧化体系对活性炭再生冷凝废水进行处理,考察了O3投加量、初始pH和Na2S2O8投加量等因素对有机物处理效能的影响,并采用红外光谱、紫外-可见光谱和三维荧光等表征手段探究了冷凝废水处理过程中的变化机理。结果表明:当O3投加量为30 mg/L,pH值为9.0,Na2S2O8投加量为0.4 g/L时,在120 min内对冷凝废水的COD去除率达到82.1%,色度(CN)去除率达到86.3%。冷凝废水可生化性得到提高,BOD5/COD值由0.17提升至0.46。由冷凝废水溶解性有机物(DOM)的表征可知,DOM中的腐殖质和发色基团被持续氧化,芳构化程度降低,色氨酸类有机物得到有效去除。结论表明,UV/O3-Na2S2O8氧化体系可有效去除冷凝废水中的难降解有机物。
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  • 收稿日期:  2020-02-15

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