工业水处理 ›› 2009, Vol. 29 ›› Issue (6): 15-19. doi: 10.11894/1005-829x.2009.29(6).15

• 试验研究 • 上一篇    下一篇

RE-TiO2/PAC 协同光催化处理焦化废水

赵清华, 叶长英, 全学军   

  1. 重庆理工大学化学与生物工程学院化学工程系,重庆400050
  • 收稿日期:2009-01-07 出版日期:2009-06-20 发布日期:2010-10-01
  • 通讯作者: 全学军
  • 作者简介:赵清华(1974- ),2002 年毕业于四川大学, 硕士,讲师。电话:(023)66696324;E-mail: qhzhao@cqit.edu.cn。
  • 基金资助:

    重庆市教委科学技术研究项目(KJ080617)

Study on the photocatalytic treatment of coking wastewater with RE-TiO2/PAC reagent

Zhao Qinghua, Ye Changying, Quan Xuejun   

  1. Department of Chemical Engineering,School of Chemical and Biological Engineering, Chongqing University of Technology,Chongqing 400050,China
  • Received:2009-01-07 Online:2009-06-20 Published:2010-10-01

摘要:

采用简单方法制备RE-TiO2 /PAC(RE 代表稀土元素,PAC 指粉末活性炭)光催化剂,用于焦化废水的光催 化处理,表现出良好的协同效应。当m(PAC)∶m(TiO2)=1∶1 时制备的稀土Nd-TiO2/PAC 处理效果最好。考察了废水初始 pH、有机物(COD)初始浓度、催化剂浓度、气体流量对Nd-TiO2/PAC 光催化处理焦化废水的影响。初始COD 为385 mg/L、pH 为9.82 的焦化废水,在气体流量为0.5 L/h、催化剂质量浓度4 g/L 时,光催化处理90 min 后,COD 去除率可达 89%。

关键词: 焦化废水, 光催化, 稀土掺杂TiO2, 活性炭, 协同效应

Abstract:

Rare earth-doped TiO2(RE-TiO2) and powder active carbon(PAC) reagent oxidation is prepared for treating coking wastewater. It shows very good cooperativity. When the mass ratio of PAC/TiO2 is 1∶1, the treatment efficiency of Nd -TiO2/PAC is the best. The effects of initial pH, initial concentration of organism COD, concentration of catalyst, and gas flow rate on the Nd-TiO2/PAC photocatalysis treatment of coking wastewater are investigated. When the initial COD is 385 mg/L, and coking wastewater pH is 9.82, aeration rate is 0.5 L/h and catalyst concentration is 4 g/L, and after being treated by photocatalysis for 90 min, the COD removal rate can reach 89%.

Key words: coking wastewater, photocatalysis, rare-doped TiO2, active carbon, cooperativity synergistic effect

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