工业水处理 ›› 2004, Vol. 24 ›› Issue (12): 34-36. doi: 10.11894/1005-829x.2004.24(12).34

• 实验研究 • 上一篇    下一篇

TiO2/UV与O3联用工艺对溴胺酸废水的预处理

胡军, 周集体, 孙丽颖, 杨松   

  1. 大连理工大学环境与生命学院, 辽宁大连, 116023
  • 收稿日期:2004-07-09 出版日期:2004-12-20 发布日期:2010-10-01
  • 作者简介:胡军(1978- ),大连理工大学环境与生命学院硕士研究生,研究力向为水污染控制.E-mail:dlhujun@sina.com

Pretreatment of bromamine acid by combined TiO2/UV and ozone

Hu Jun, Zhou Jiti, Sun Liying, Yang Song   

  1. School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116023, China
  • Received:2004-07-09 Online:2004-12-20 Published:2010-10-01

摘要:

采用TiO2/UV与O3联用工艺对中低浓度溴胺酸废水进行预处理。实验结果表明,TiO2/UV与O3联用对溴胺酸的降解具有一定协同效应,本质原因是TiO2/UV与O3协同产生了更多羟基自由基。初始pH值对溴胺酸的降解效果影响不大,COD去除率基本稳定在90%∼95%之间。溴胺酸废水经过2h催化降解,脱色率能达到70%以上,COD也能得到一定的去除,同时废水的B/C值能从0.030∼0.043上升至0.320∼0.368,可生化性得到大幅度提高,为后续生物处理创造了有利条件。

关键词: 溴胺酸, 光催化, 臭氧, 可生化性

Abstract:

The pretreatment of bromamine acid of middle or lower level COD value is conducted by combined TiO2/UV and ozone.The experimental results indicate that a synergic effect of combined TiO2/UV and ozone on the decomposition of bromamine acid exists,inherently due to more hydroxyl radicals produced synergetically by TiO2/UV and ozone.The initial pH value has little influence on the degradation by combined TiO2/UV and ozone. The removal rate of COD levels off to the range of 90%-95%. After a short time of catalytic degradation of bromamine acid,the decolorization efficiency reaches over 70% and the value of COD is decreased at certain degree.At the same time,the value of BODS/COD increases from 0.030-0.043 to 0.320-0.368,which means that biodegradability of the wastewater is largely raised.All the above factors will benefit the subsequent biologi-cal treatment.

Key words: bromamine acid, photocatalysis, ozone, biodegradability

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