A case for aerobic sludge granulation: from pilot to full scale

Journal of Water Reuse and Desalination

Ding, L. B.¹  Liu, J.¹  Huang, G. X.²  Li, J.²  Yang, H. G.²  Chen, T.²  Shen, J. Y.³ 

[1] College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China;College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China;Yancang Wastewater Treatment Plant, Haining 314422, China

关键词: aerobic granular sludge;    continuous-flow;    full scale;    pilot scale;    SBR;   

DOI  :  10.2166/wrd.2015.188

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

A pilot-scale sequencing batch reactor (SBR) treating 120 m3/d of a town's wastewater was set up in 2009 and aerobic granules with a mean diameter of 0.28 mm, mixed liquor suspended solids (MLSS) of 7,500 mg/L and sludge volume index (SVI)30 of 43 mL/g were achieved. A full-scale SBR with 50,000 m3/d for treating a town's wastewater was operated in 2010 and aerobic granules with a mean MLSS of 2,285 mg/L and SVI30 of 52.5 mL/g were obtained. Aerobic granules had excellent performances of chemical oxygen demand (COD) and NH4+-N removal and remained stable for a long time. Raw wastewater and SBR operating mode had a positive effect on aerobic granule formation. Therefore, aerobic granular technology could be successfully applied in the full-scale bioreactor under specific conditions. Future development of aerobic granular technology is the application in full-scale continuous-flow reactors.

【 授权许可】

CC BY-NC-ND