Simulation and configuration correlation analysis of the self-agitation anaerobic baffled reactor for treating livestock organic waste

Wei Kang Qi, Weicheng Li, Jingru Du, Shi Long He, Yu You Li

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A self-agitation anaerobic baffled reactor (SA-ABR) was designed for treating waste substrate. The system uses the produced biogas to create a level difference in the chambers for agitation without any mechanical equipment. Computational fluid dynamics (CFD) models were used to investigate the influence of different configurations on the tracer diffusion. The results show that each self-agitation cycle includes an energy storage process, an exergonic process and a buffer stage. The compound transition phenomenon mainly occurs during the energy exergonic process and buffer stage. A higher U-tube would decrease the diffusion of the influent. The liquid level significantly affects the mixing in the reactor. The incomplete self-agitation could be improved by decreasing the U-tube height, increasing the difference of the liquid levels or decreasing the U-tube length. Furthermore, the two-stage agitation allows the reactor to behave as a two-phase system and the compounds in the two stages could partially be mixed.

Original languageEnglish
Pages (from-to)85-92
Number of pages8
JournalBiochemical Engineering Journal
Volume103
DOIs
Publication statusPublished - 2015 Nov 5

Keywords

  • Anaerobic process
  • CFD
  • Mixing
  • Modelling
  • Optimisation
  • Waste treatment

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Bioengineering
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Simulation and configuration correlation analysis of the self-agitation anaerobic baffled reactor for treating livestock organic waste'. Together they form a unique fingerprint.

Cite this