石油化工高等学校学报

石油化工高等学校学报

• 石油化工 • 上一篇    下一篇

一种可用于低COD石化废水处理的新型树脂

燕晓宇罗根祥马诚   

  1. (辽宁石油化工大学 化学化工与环境学部,辽宁 抚顺 113001)
  • 收稿日期:2019-03-18 修回日期:2019-04-02 出版日期:2019-12-25 发布日期:2019-12-24
  • 通讯作者: 罗根祥(1965⁃),男,硕士,教授,从事胶体与表面活性剂化学、无机合成研究;E⁃mail:gxluo1965@163.com
  • 作者简介:燕晓宇(1993-),男,硕士研究生,从事高分子合成研究; E-mail:405934202@qq.com
  • 基金资助:
    中国石油化工股份有限公司资助项目(317009?7)

A Novel Resin for the Treatment of Low⁃Concentration Petrochemical Wastewater

Yan XiaoyuLuo GenxiangMa Cheng   

  1. (College of Chemistry, Chemical Engineering and Environmental Engineering,Liaoning Shihua University,Fushun Liaoning 113001,China)
  • Received:2019-03-18 Revised:2019-04-02 Online:2019-12-25 Published:2019-12-24

摘要: 为了对低COD的石化废水进行深度处理,通过乳液聚合法将苯乙烯、丙烯酸丁酯、可聚合季铵盐进行三元共聚,以一步法合成了一种新型聚苯乙烯(PS)微球吸附树脂。采用IR、SEM、BET等手段对树脂进行表征,并与市售吸附树脂D301、XAD⁃4、NDA⁃150进行了结构和性能的对比。结果表明,合成树脂呈不规则球形,直径在0.2~0.4 mm,24 h内可将石化二级废水的COD从100 mg/L降至20 mg/L以下。该树脂对石化废水的吸附行为接近单分子层的吸附,饱和吸附量达到89.0 mg/g,高于市售树脂D301(85.5 mg/g)、NDA⁃150(30.4 mg/g)以及XAD⁃4(58.8 mg/g)。臭氧氧化再生结果表明,合成的PS树脂可循环再生4次以上,较其他几种传统的吸附树脂具有更好的再生性能。该材料可以作为处理石化废水的良好吸附剂应用于低COD废水的深度处理工艺中。

关键词: 吸附树脂, 乳液聚合, 石化废水, 臭氧氧化再生

Abstract: In order to conduct deep treatment of low concentration petrochemical wastewater, a novel type of polystyrene (PS) microsphere adsorption resin was synthesized by emulsion polymerization of styrene, butyl acrylate and polymerizable quaternary ammonium salt by emulsion polymerization.The resin was characterized by IR,SEM and BET,and compared with several commercially available adsorption resins D301,XAD⁃4 and NDA⁃150.The results show that the synthetic resin has an irregular spherical shape with a diameter of 0.2~0.4 mm,and the COD of the petrochemical secondary wastewater can be reduced from 100 mg/L to below 20 mg/L within 24 h.The adsorption behavior of this resin on petrochemical wastewater is close to that of monolayer,and the saturated adsorption amount reaches 89 mg/g,which was higher than the commercially available resins D301 (85.5 mg/g),NDA⁃150 (30.4 mg/g) and XAD⁃4 (58.8 mg/g).Ozone oxidation regeneration results show that the synthesized PS resin can be recycled more than 4 times,which has better regeneration performance than other conventional adsorption resins. This material can be used as an excellent adsorbent for treating petrochemical wastewater in advanced treatment processes for low⁃concentration wastewater.

Key words: Adsorption resins, Emulsion polymerization, Petrochemical wastewater, Ozone oxidation regeneration