The application of UASB-MBR with partial nitrification-denitrification in wastewater reclamation in warm climate

Journal of Water Reuse and Desalination

Wong, F. S.¹  Moy, Y. P.¹  Lin, S.¹  Fang, W.¹ 

[1] Institute of Environmental Science and Engineering, Nanyang Technological University, Innovation Centre, Singapore 637723 Singapore

关键词: membrane bioreactor;    shortcut nitrification-denitrification;    UASB;    water reclamation;   

DOI  :  10.2166/wrd.2012.027

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

An up-flow anaerobic sludge blanket (UASB) process has been successfully applied for the treatment of municipal wastewaters with methane production for energy recovery. A membrane bioreactor (MBR) was coupled to the UASB to further improve carbon removal. Nitrogen removal was conducted with the UASB-MBR integrated system under optimum conditions which promoted nitrogen removal through a shortcut nitrification-denitrification process. The process achieved 69–86% of soluble chemical oxygen demand (CODsolu) removal and 56–80% of total nitrogen (TN) removal. Biogas production was between 25 and 76 L/m3 wastewater (50–75% methane content) for the treatment of high-strength municipal wastewater. As the anaerobic process combined with a shortcut nitrogen removal step can achieve reduction of footprint, lower greenhouse gas emission and a potential for bioenergy recovery, the integrated UASB-MBR system could be a better choice for municipal wastewater treatment than the conventional activated sludge treatment process in warm climatic conditions.

【 授权许可】

CC BY-NC-ND