Comparison of three biomass-retaining reactors of the ASBR, the UBF and the USR treating swine wastewater for biogas production

Hongnan Yang, Liangwei Deng, Lan Wang, Dan Zheng, Yi Liu, Shuang Wang and Fangyu Huang

Renewable Energy, 2019, vol. 138, issue C, 521-530

Abstract: The comparative process performance and efficiency of reactors treating swine wastewater for biogas production at 35 °C were evaluated for three biomass-retaining reactors with different configurations and operational conditions: an anaerobic sequencing batch reactor (ASBR), an upflow anaerobic sludge bed-filter (UBF) and an upflow solid reactor (USR). The maximum volumetric methane production rates of the ASBR, UBF and USR were 1.679, 1.669 and 1.234 L L−1 d−1, respectively, at the OLR of 8 g TS L−1 d−1. Compared with the USR, the ASBR and UBF achieved better performance, which was attributed to more efficient biomass retention indicated by a higher solids residence time-to-hydraulic residence time ratio. The worst performance of the USR was caused by serious washout of sludge. The microorganism distribution profile along with depth showed that methanogenic genera of Methanosaeta and Methanospirillum accounted for 81.37–90.83% and 77.67–88.50% of all archaeal clones in the ASBR and UBF, respectively, and presented non-obvious spatial heterogeneity, while the abundances of methanogenic genera decreased from 93.61 to 4.64% with depth in the USR, instead of an increase in the populations of acid resistant bacteria.

Keywords: Anaerobic digestion; Swine wastewater; Reactors; Biomass retention; Depth; Microbial communities (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148119301387
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:138:y:2019:i:c:p:521-530

DOI: 10.1016/j.renene.2019.01.124

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().