Research on Developing Carbon Resource with Primary Sludge by Two-Stage Complete Mixing Ferment Process

Abstract:

Two-stage complete mixing ferment process was used for developing carbon source with primary sludge. The effects of hydrolysis retention time (HRT) and sludge retention time (SRT) on the ferment system were studied. The results showed that the effective HRT was between 32 h and 36 h, and the effective SRT was between 4 d and 7 d. Under above conditions, the average effluent SCOD was in the range of 980 mg/L and 1180 mg/L, and supernatant MLSS was in the range of 50 mg/L and 80 mg/L. And then, the separation effect of the sludge thickener was clearly. Acidogenic bacteria and methanogenic bacteria could be separated effectively in the conditions.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 381-384
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.381
• Online since: May 2011
• Authors: Bai Hang Zhao, Jun Li, Jian Ren
• Keywords: Carbon Source, Hydrolysis Retention Time, Sludge Retention Time (SRT)

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