工业水处理 ›› 2021, Vol. 41 ›› Issue (10): 109-113, 118. doi: 10.19965/j.cnki.iwt.2020-1280

• 试验研究 • 上一篇    下一篇

碱改性ZSM-5负载金属组分催化臭氧降解工业废水

徐增益1(),余金鹏1,2,3,4,李森1,王鹏飞1,2,3,4,*()   

  1. 1. 上海化工研究院有限公司, 上海 200062
    2. 上海绿强新材料有限公司, 上海 201608
    3. 聚烯烃催化技术与高性能材料国家重点实验室, 上海 200062
    4. 上海市聚烯烃催化技术重点实验室, 上海 200062
  • 收稿日期:2021-07-20 出版日期:2021-10-20 发布日期:2021-10-26
  • 通讯作者: 王鹏飞 E-mail:1181512974@qq.com;wpf@sh-lq.com
  • 作者简介:徐增益(1995—),硕士研究生。E-mail:1181512974@qq.com
  • 基金资助:
    上海市工业强基专项(GYQJ-20118-1-22)

Catalytic ozonation degradation of industrial wastewater by alkaline modified ZSM-5 supported metal component

Zengyi XU1(),Jinpeng YU1,2,3,4,Sen LI1,Pengfei WANG1,2,3,4,*()   

  1. 1. Shanghai Research Institute of Chemical Industry Co., Ltd., Shanghai 200062, China
    2. Shanghai Lvqiang New Materials Co., Ltd., Shanghai 201608, China
    3. State Key Laboratory of Polyolefin Catalytic Technology and High Performance Materials, Shanghai 200062, China
    4. Shanghai Key Laboratory of Catalysis Technology for Polyolefins, Shanghai 200062, China
  • Received:2021-07-20 Online:2021-10-20 Published:2021-10-26
  • Contact: Pengfei WANG E-mail:1181512974@qq.com;wpf@sh-lq.com

摘要:

采用氢氧化钠对ZSM-5分子筛进行碱改性,并结合SEM、XRD、BET、FT-IR、UV-Vis等技术对其进行了分析。利用改性后的ZSM-5分子筛负载Fe、Mn、Co等活性组分制备了Fe/ZSM-5(1)、Mn/ZSM-5(1)、Co/ZSM-5(1)负载型催化剂,并用其催化臭氧降解工业废水,考察了3种催化剂的催化降解效果。结果表明,Co/ZSM-5(1)负载型催化剂的催化降解效果最佳。处理200 mL COD为400~500 mg/L的工业废水,当Co/ZSM-5(1)催化剂投加量为1.0 g/L,温度为40℃,pH为6~7,臭氧质量浓度为4 mg/L,臭氧通量为25 L/h,反应60 min时,废水COD降解率可达89.7%。该催化剂性能较为稳定,循环使用4次后仍具有较好的COD降解效果。

关键词: 工业废水, 臭氧, 碱改性, ZSM-5分子筛, 催化氧化

Abstract:

The ZSM-5 molecular sieve was modified by sodium hydroxide, and analyzed by SEM, XRD, BET, FT-IR, UV-Vis and other characterization techniques. Fe/ZSM-5(1), Mn/ZSM-5(1) and Co/ZSM-5(1) supported catalysts were prepared by using modified ZSM-5 molecular sieve supported with active components such as Fe, Mn and Co. The prepared catalysts were used to catalyze ozone degradation of industrial wastewater to investigate their catalytic degradation effects. The results showed that Co/ZSM-5(1) supported catalysts had the best catalytic degradation effect. The COD degradation ratio of wastewater could reach 89.7% at conditions of 200 mL of industrial wastewater with COD of 400-500 mg/L, Co/ZSM-5(1) catalyst dosage 1.0 g/L, temperature 40℃, pH 6-7, ozone concentration 4 mg/L, ozone flux 25 L/h and time 60 min. Moreover, the performance of catalyst was relatively stable, and it still had a good wastewater COD degradation effect after 4 times recycle usage.

Key words: industrial wastewater, ozone, alkali modification, ZSM-5 molecular sieve, catalytic oxidation

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