Use of Fenton reaction for the treatment of leachate from composting of different wastes

JOURNAL OF HAZARDOUS MATERIALS

卷:138

Article

Trujillo, Daniel ; Font, Xavier ; Sanchez, Antoni

关键词: BOD5 removal;    COD removal;    composting;    Fenton reaction;    leachate;   

DOI  :  10.1016/j.jhazmat.2006.05.053

来源: Elsevier

【 摘 要 】

The oxidation of leachate coming from the composting of two organic wastes (wastewater sludge and organic fraction of municipal solid wastes) using the Fenton's reagent was studied using different ratios [Fe2+]/[COD](0) and maintaining a ratio [H2O2]/[COD](0) equal to 1. The optimal conditions for Fenton reaction were found at a ratio [Fe2+]/[COD](0) equal to 0.1. Both leachates were significantly oxidized under these conditions in terms of COD removal (77 and 75% for leachate from wastewater sludge composting and leachate from organic fraction of municipal solid wastes, respectively) and BOD5 removal (90 and 98% for leachate from wastewater sludge composting and leachate from organic fraction of municipal solid wastes, respectively). Fenton's reagent was found to oxidize preferably biodegradable organic matter of leachate. In consequence, a decrease in the biodegradability of leachates was observed after Fenton treatment for both leachates. Nevertheless, Fenton reaction proved to be a feasible technique for the oxidation of the leachate under study, and it can be considered a suitable treatment for this type of wastewaters. (c) 2006 Elsevier B.V. All rights reserved.

【 授权许可】

Free