Dewaterability of Aerobic Granular Sludge

Yan Nian Zhou; Jun Li; Jing Li; Su Wei

doi:10.4028/www.scientific.net/AMM.90-93.2944

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 90-93Dewaterability of Aerobic Granular Sludge

Dewaterability of Aerobic Granular Sludge

Abstract:

Dewatering characteristics of aerobic granular sludge, activated sludge and sludge which mixed flocculant was studied. It was shown that the specific resistance of aerobic granular sludge is lower than activated sludge and sludge with mixed flocculant was in the range of 1.07~1.80×10⁹ S₂/g, and it increased with the increase of diameters of the granules. The water ratio of aerobic granular sludge by pressure filtrate dehydration was decreased to 83.5~86.1%, activated sludge and sludge which mixed flocculant were 94.2% and 91.4%, respectively. The structural characteristics, distribution features of extracellular polymeric substances and PN/PS values of aerobic granular sludge were important factors of its excellent dewaterability. Aerobic granular sludge technology was regarded as one of the promising biotechnologies in sludge treatment.

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Periodical:

Applied Mechanics and Materials (Volumes 90-93)

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2944-2948

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.90-93.2944

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Online since:

September 2011

Authors:

Yan Nian Zhou, Jun Li, Jing Li, Su Wei

Keywords:

Aerobic Granular Sludge, Dewaterability, Pressure Filtrate Dehydration, Specific Resistance

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