Properties of Anaerobic Activated Sludge in Biohydrogen Production Reactor

Abstract:

For the properties of activated sludge studies, three kinds of activated sludge were obtained from continuous hydrogen production reactor. Activated sludge was got under organic loading rate (OLR) of 3, 7 and 25 kgCOD/m³·d condition, respectively. Sedimentation performance and activities of sludge were investigated. When OLR was 3 kgCOD/m³·d, activated sludge showed good sedimentation performance. After 30 minutes sedimentation, the volume of activated sludge in total mixture volume was about 39%. When OLR was 7 and 25kgCOD/m³·d, after 30 minutes sedimentation, the volume of activated sludge in total mixture volume was 80% and 83%, respectively. The increase of biomass is the main reason for increase of sedimentation performance. MLVSS/MLSS of activated sludge was 37.7% and 79.6% under OLR of 3 and 25kgCOD/m³·d condition, therefore, activities of activated sludge was high under high OLR condition. Since sedimentation performance of sludge is high under high OLR condition, hydraulic retention time should controlled carefully in engineering operation.

• Periodical: Advanced Materials Research (Volumes 884-885)
• Pages: 503-506
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.884-885.503
• Online since: January 2014
• Authors: Zhi Qin*, Guang Yu Bai, Qi Zhang, Yong Yan Cui, Chao Yu Zhang
• Keywords: Anaerobic Activated Sludge, Biohydrogen Production, Fermentation, Sedimentation Performance

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