Use of advanced oxidation processes to improve the biodegradability of mature landfill leachates

被引：205

作者：

de Morais, JL ^{[1
]}

Zamora, PP ^{[1
]}

机构：

[1] Univ Fed Parana, Dept Quim, Grp Desenvolvimento Tecn Avancadas Tratamento Res, BR-81531990 Curitiba, Parana, Brazil

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2005年 / 123卷 / 1-3期

关键词：

landfill leachate; biodegradability enhancement; photo-Fenton; UV/H2O2;

D O I：

10.1016/j.jhazmat.2005.03.041

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Two advanced oxidative processes (Fe2+/H2O2/UV and H2O2/UV systems) were used for the pre-treatment of mature landfill leachate with the objective of improving its overall biodegradability, evaluated in terms of BOD5/COD ratio, up to a value compatible with biological treatment. At optimized experimental conditions (2000 mg L-1 of H2O2 and 10 mg L-1 of Fe2+ for the photo-Fenton system, and 3000 mg L-1 of H2O2 for the H2O2/UV system), both methods showed suitability for partial removal of chemical oxygen demand (COD), total organic carbon (TOC) and color. The biodegradability was significantly improved (BOD5/COD from 0.13 to 0.37 or 0.42) which allowed an almost total removal of COD and color by a sequential activated sludge process. In addition, gel permeation chromatography (GPC) has showed a substantial agreement on the cleavage of large organic compound into smaller ones. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：181 / 186

页数：6

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