Carbon source recovery from waste activated sludge by alkaline hydrolysis and gamma-ray irradiation for biological denitrification

被引：87

作者：

Kim, Tak-Hyun ^{[1
]}

Nam, Youn-Ku ^{[1
]}

Park, Chulhwan ^{[2
]}

Lee, Myunjoo ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Radiat Res Div Ind & Environm, Jeongeup 580185, South Korea

[2] Kwangwoon Univ, Dept Chem Engn, Seoul 139701, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 23期

关键词：

Sludge; Carbon source; Gamma-ray irradiation; Alkaline hydrolysis; Denitrification; ELECTRON-BEAM; HIGH-STRENGTH; REMOVAL; WATER;

D O I：

10.1016/j.biortech.2009.06.049

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The recovery of an organic carbon source from a waste activated sludge by using alkaline hydrolysis and radiation treatment was studied, and the feasibility of the solubilized sludge carbon source for a biological denitrification was also investigated. The effects of an alkaline treatment and gamma-ray irradiation on a biodegradability enhancement of the sludge were also studied. A modified continuous bioreactor for a denitrification (MLE reactor) was operated by using a synthetic wastewater for 47 days. Alkaline treatment of pH 10 and gamma-ray irradiation of 20 kGy were found to be the optimum carbon source recovery conditions. COD removal of 84% and T-N removal of 51% could be obtained by using the solubilized sludge carbon source through the MLE denitrification process. It can be concluded that the carbon source recovered from the waste activated sludge was successfully employed as an alternative carbon source for a biological denitrification. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：5694 / 5699

页数：6

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