Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35759
Title: An innovative wood-chip-framework soil infiltrator for treating anaerobic digested swine wastewater and analysis of the microbial community
Authors: Zhao, BW
Li, JZ
Leu, SY 
Keywords: Swine wastewater
Combined anaerobic-aerobic process
Biofilter
Ammonia loading rate
Nitrogen removal
Issue Date: 2014
Publisher: Elsevier
Source: Bioresource technology, 2014, v. 173, p. 384-391 How to cite?
Journal: Bioresource technology 
Abstract: Combined anaerobic-aerobic processes are efficacious and economic approaches in treating swine wastewater. Nitrogen removal efficiency of these processes, however, is usually limited due to the low carbon/nitrogen (C/N) ratio of the wastewater. An innovative wood-chip-framework soil infiltrator (WFSI) was developed and its performance in treating anaerobic digested swine wastewater was investigated. The WFSI showed comparable removal of chemical oxygen demand (COD) and amongst the highest efficiency of nitrogen removal in treating low C/N wastewater. At a COD volume loading rate of 98.6 g/m(3) d the WFSI could remove up to 47.7 g/m(3) d of COD. Removal rates of NH4+-N and total nitrogen, also reached 69.1 and 30.4 g/m(3) d, respectively, when NH4+-N loading rate was 88.4 g/m(3) d. Biological analysis indicated that aerobic, anoxic and anaerobic microbiota occurred throughout the WFSI. Abundant cellulose and lignin decomposing bacteria could degrade the wood chips and provided extra carbon source to enhance denitrification.
URI: http://hdl.handle.net/10397/35759
ISSN: 0960-8524
EISSN: 1873-2976
DOI: 10.1016/j.biortech.2014.09.135
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