Start-up Experiment of Ethanol-Type Fermentation of Pretreated Surplus Sludge

Abstract:

This paper study on surplus sludge of high pressure combined with thermal hydrolysis; investigate the start-up of ethanol-type fermentation. The results show that under the condition of HRT 3.6 d, the organic loading rate for 4.40kgVS/m³•d, the pH of acidogenic phase should be controlled in the scale of 4.0～4.5, the acidogenic phase could stable at the ethanol-type fermentation stage after the experiment lasting for 22d, the contractions of outlet sludge in VFA reached 3820～3980mg/L, in which the sum of ethanol and acetic could reach more than 72% VFA, the specific hydrogen production of acidogenic phase in this condition achieved 0.018 L•H²/g•VS.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 3183-3187
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.3183
• Online since: July 2011
• Authors: Guang Li, He Li Wang, Hui Long Qi, Yang Bai
• Keywords: Ethanol-Type Fermentation, Specific Hydrogen Production, Surplus Sludge

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