Methane recovery efficiency in a submerged anaerobic membrane bioreactor (SAnMBR) treating sulphate-rich urban wastewater: Evaluation of methane losses with the effluent

被引：90

作者：

Gimenez, J. B. ^{[1
]}

Marti, N. ^{[1
]}

Ferrer, J. ^{[2
]}

Seco, A. ^{[1
]}

机构：

[1] Univ Valencia, Escola Tecn Super Engn, Dept Engn Quim, E-46100 Valencia, Spain

[2] Univ Politecn Valencia, IIAMA, Inst Univ Invest Engn Aigua & Medi Ambient, Valencia 46022, Spain

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 118卷

关键词：

Dissolved methane; Methane saturation index; Submerged anaerobic membrane bioreactor (SAnMBR); Urban wastewater; Sulphate-rich wastewater; TEMPERATURE;

D O I：

10.1016/j.biortech.2012.05.019

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The present paper presents a submerged anaerobic membrane bioreactor (SAnMBR) as a sustainable approach for urban wastewater treatment at 33 and 20 degrees C, since greenhouse gas emissions are reduced and energy recovery is enhanced. Compared to other anaerobic systems, such as UASB reactors, the membrane technology allows the use of biogas-assisted mixing which enhances the methane stripping from the liquid phase bulk. The methane saturation index obtained for the whole period (1.00 +/- 0.04) evidenced that the equilibrium condition was reached and the methane loss with the effluent was reduced. The methane recovery efficiency obtained at 20 degrees C (53.6%) was slightly lower than at 33 degrees C (57.4%) due to a reduction of the treatment efficiency, as evidenced by the lower methane production and the higher waste sludge per litre of treated wastewater. For both operational temperatures, the methane recovery efficiency was strongly affected by the high sulphate concentration in the influent wastewater. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：67 / 72

页数：6

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