Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2024, Vol. 60 ›› Issue (1): 183-187.DOI: 10.13209/j.0479-8023.2023.024

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Optimization of Reaction Conditions for Formaldehyde Treatment of Semi-coking Wastewater

WANG Yali†, BAI Xubo, SUN Juanjuan   

  1. School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000
  • Received:2023-01-18 Revised:2023-02-13 Online:2024-01-20 Published:2024-01-20
  • Contact: WANG Yali, E-mail: yaw32(at)yulinu.edu.cn

甲醛法处理兰炭废水反应条件的优化

王亚俐†, 柏旭波, 孙娟娟   

  1. 榆林学院化学与化工学院, 榆林 719000
  • 通讯作者: 王亚俐, E-mail: yaw32(at)yulinu.edu.cn
  • 基金资助:
    陕西省重点研发计划(2021SF-449)和榆林市科技局榆林市工业水处理工程技术研究中心建设项目(CXY-2020-005)资助

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Abstract:

Phenolic substances in semi-coking wastewater were converted into phenolic resin by formaldehyde, therefore the resources were utilized. Volatile phenol, COD, ammonia nitrogen and oil in semi-coking wastewater before and after phenolic resin formation were detected to optimize the reaction time, temperature and raw material ratio, eventually the optimal reaction conditions for phenolic resin preparation were determined. Meanwhile, the physicochemical analysis of phenolic resin materials was carried out by XRD and SEM. The results showed that a volume ratio of 1:40 (formaldehyde vs. semi-coking wastewater), a reaction temperature of 90ºC, and a reaction time of 4 hours were the optimum reaction conditions for semi-coking wastewater treated by formaldehyde.

Key words: semi-coking wastewater, phenolic resin, reaction condition optimization, characterization

摘要：

利用甲醛将兰炭废水中的酚类物质转化为酚醛树脂, 以便资源化利用兰炭废水。通过测定酚醛树脂生成过程中挥发酚、COD、氨氮和油的含量, 调控反应时间、温度以及原料比例, 确定制备酚醛树脂的最优反应条件。同时, 应用X射线晶体衍射(XRD)和扫描电子显微镜(SEM)等表征技术对生成的酚醛树脂进行理化分析。研究结果显示, 甲醛法处理兰炭废水制备酚醛树脂的最佳条件为反应温度=90ºC, 反应时间=4 h, 甲醛与兰炭废水的体积比=1:40。 

关键词: 兰炭废水, 酚醛树脂, 反应条件优化, 表征

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