Catalytic oxidation of highly concentrated real industrial wastewater by integrated ozone and activated carbon

被引：104

作者：

Lei, Lecheng ^{[1
]}

Gu, Li ^{[1
]}

Zhang, Xingwang ^{[1
]}

Su, Yaling ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Environm Pollut Control Technol, Hangzhou 310028, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2007年 / 327卷 / 02期

基金：

中国国家自然科学基金;

关键词：

industrial wastewater; ozonation; GAC adsorption; catalytic ozonation;

D O I：

10.1016/j.apcata.2007.05.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Integration of ozone and aranular activated carbon (GAC) was applied to treat highly concentrated real wastewater from chemical industry. The results revealed that the integrated process had more advantages than the individual ozonation and GAC adsorption. The integrated process enhanced COD removal, increased ozone utilization and avoided frequent GAC regeneration. The pH value was found to exert a great effect on COD removal: a positive effect on COD removal was more pronounced at basic conditions than at acidic conditions. Furthermore, there were some differences in reaction mechanisms at different pH conditions, as confirmed by FTIR and SEM analysis. At the acidic conditions, the primary reaction mechanism was adsorption-ozonation regeneration, while at the basic conditions, GAC adsorption ability was restrained, and the primary mechanism was catalytic oxidation. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：287 / 294

页数：8

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