Characteristics of aerobic granules grown on glucose a sequential batch shaking reactor

Article type: Research Article

Authors: CAI, Chun-guang | ZHU, Nan-wen | LIU, Jun-shen | WANG, Zhen-peng | CAI, Wei-min^;

Affiliations: School of Civil and Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China | Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China

Note: [] Corresponding author. E-mail: [email protected]

Abstract: Aerobic heterotrophic granular sludge was cultivated in a sequencing batch shaking reactor (SBSR) in which a synthetic wastewater containing glucose as carbon source was fed. The characteristics of the aerobic granules were investigated. Compared with the conventional activated sludge flocs, the aerobic granules exhibit excellent physical characteristics in terms of settleability, size, shape, biomass density, and physical strength.Scanning electron micrographs revealed that in mature granules little filamentous bacteria could be found, rodshaped and coccoid bacteria were the dominant microorganisms.

Keywords: aerobic granulation, sequential batch reactor, granule characteristics

Journal: Journal of Environmental Sciences, vol. 16, no. 4, pp. 624-626, 2004