化工进展 ›› 2018, Vol. 37 ›› Issue (11): 4476-4484.DOI: 10.16085/j.issn.1000-6613.2018-0395

• 资源与环境化工 • 上一篇    下一篇

悬浮填料负载氧化铁Fenton流化床法对腈纶废水的处理

唐佳伟1, 宁可2, 雷伟香3, 张春晖1, 孟晓飞1   

  1. 1 中国矿业大学(北京)化学与环境工程学院, 北京 100083;
    2 轻工业环境保护研究所, 北京 100012;
    3 环境保护部华南环境科学研究所, 广东 广州 510000
  • 收稿日期:2018-02-27 修回日期:2018-06-11 出版日期:2018-11-05 发布日期:2018-11-05
  • 通讯作者: 张春晖,副教授,博士生导师,研究方向为水污染控制与资源化。E-mail:truemanjung@163.com。
  • 作者简介:唐佳伟(1992-),男,博士研究生,研究方向为水污染控制。
  • 基金资助:
    国家水体污染控制与治理科技重大专项(2017ZX07402001)。

Treatment of acrylic fiber wastewater by Fenton fluidized bed oxidation process with suspended filler coated iron oxide

TANG Jiawei1, NING Ke2, LEI Weixiang3, ZHANG Chunhui1, MENG Xiaofei1   

  1. 1 School of Chemical & Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
    2 Environmental Protection Research Institute of Light Industry, Beijing 100012, China;
    3 South China Institute of Environmental Sciences, the Ministry of Environment Protection of PRC, Guangzhou 510000, Guangdong, China
  • Received:2018-02-27 Revised:2018-06-11 Online:2018-11-05 Published:2018-11-05

摘要: 以悬浮填料为基体,采用循环浸泡法将铁氧化物负载到填料表面制备出具有催化能力的悬浮填料载体,用于Fenton流化床工艺处理腈纶废水的研究,通过正交实验验证悬浮填料投加率、通气量、H2O2浓度和Fe2+投加量对COD降解效率的影响。实验结果表明:悬浮填料负载氧化铁后密度由0.9627g/cm3略增至1.0216g/cm3,填料表面铁氧化物覆盖均匀,载体表面负载的氧化物中铁元素含量达到47.17%;正交实验及模拟结果表明各因素影响处理效果的主次顺序为H2O2 > Fe2+ > 通气量 > 填料投加率,以及当实验最佳参数条件为:H2O2浓度为75mmol/L,Fe2+投加量为3.25mmol/L,通气量0.25m3/h,悬浮填料载体投加率为40%时,COD、BOD5、NH3-N、TOC和氰化物的去除率分别为77.8%、44%、76%、70.6%和70%;填料载体循环使用5次后,降解120min,COD去除率从77.8%降到70.4%,性能稳定,可重复利用。

关键词: 腈纶废水, 芬顿, 流化床, 悬浮填料

Abstract: Based on suspended filler as the substrate, iron oxide was loaded onto the surface of the packing material by cyclic immersion method to prepare a catalytic packing material, which was used for the advanced treatment of acrylic fiber wastewater by Fenton fluidized bed process. The effect of addition rate of suspended filler, the amount of ventilation, the concentration of H2O2 and the dosage of Fe2+ on the degradation efficiency of COD was studied by orthogonal test. The experimental results showed that the density of suspended filler coated with iron oxide slightly increased from 0.9627g/cm3 to 1.0216g/cm3, and it was evenly for the iron oxide on the surface of filler with 47.17% of iron content. The results of orthogonal test and simulation showed that the factors influenced order processing effect was H2O2>Fe2+ > ventilatory capacity > filling rate of catalytic carriers. The optimum parameters conditions were that the concentration of H2O2 was 75mmol/L, Fe2+ dosage was 3.25mmol/L, volume 0.25m3/h, suspended carrier dosage rate of 40%, the COD, BOD5, NH3-N, TOC and cyanide were 77.8%, 44%, 76%, 70.6% and 70%, respectively. After 5 cycles of packing carrier recycling with 120min of reaction time, the COD removal efficiencies were reduced from the 77.8% to 70.4% that proved it could be reused with stable performance.

Key words: acrylic fiber wastewater, Fenton, fluidized bed, suspended filler

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