An investigation into the removal of Salmonella and enteric indicator bacteria from the separated liquid fraction of raw or anaerobically digested pig manure using novel on-farm woodchip biofilters

McCarthy, G.; Lawlor, Peadar G.; Carney, Kathy; Zhan, Xinmin; Gutiérrez, Montserrat; Gardiner, Gillian E.

doi:10.1016/j.scitotenv.2014.12.036

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…Treatment of the liquid fraction of anaerobically digested (AD) pig manure in meso-scale (midway between bench and pilot-scale) ICWs reduced indicator bacteria (McCarthy et al, 2011b). Furthermore, in on-farm ICWs treating agricultural wastewater, including the liquid fraction of AD pig manure, and woodchip biofilters treating the liquid fraction of manure, Salmonella, including antibiotic-resistant strains, was undetectable in the effluent (McCarthy et al, 2011b(McCarthy et al, , 2015a. Thus, management strategies can be successful in reducing pathogens, including antibiotic-resistant strains, in pig manure and its separated solid and liquid fractions.…”

Section: Management Of Pig Manurementioning

confidence: 99%

An overview of Irish pig production, research and knowledge transfer since 1960

Boyle¹,

Carroll²,

Clarke³

et al. 2022

Irish Journal of Agricultural and Food Research

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Pig production in Ireland has gone through enormous changes during the past 60 yr, from pigs being primarily produced as a sideline on dairy farms, to an industry with one of the highest average herd sizes in Europe. This happened in part due to external pressure on the industry, whereby economies of scale were needed to compete with pigs produced in other countries, but largely due to the instigation of national programmes to support the pig industry through research, education and knowledge transfer. These efforts helped producers to take advantage of genetic improvements and monitor their own performance over time, as well as allowing for benchmarking of the national herd against other countries. The research programme initiated in the 1960s continues to grow and expand, providing the pig industry with internationally renowned data and knowledge in the areas of nutrition, animal welfare, the environment and energy use. Recent initiatives such as the establishment of the Teagasc and Irish Farmers Association Pig Joint Programme, and a Pig Health Check section in Animal Health Ireland, will help to promote further cross-collaboration between stakeholders in the pig industry, and enable it to rise to the challenges of the years ahead.

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Section: Management Of Pig Manurementioning

confidence: 99%

An overview of Irish pig production, research and knowledge transfer since 1960

Boyle¹,

Carroll²,

Clarke³

et al. 2022

Irish Journal of Agricultural and Food Research

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“…Los resultados obtenidos en esta investigación también son comparables, e incluso superan a algunos reportes, en los que se evalúa el efecto de la acidificación a temperatura ambiente de estiércol o el uso de biofiltros sobre la reducción del contenido de bacterias (De la Torre et al 2000, Sahlström et al 2008, Zhang et al 2011, McCarthy et al 2015.…”

Section: Evaluación Microbiológicaunclassified

Uso De Bacterias Ácido Lácticas Para Descontaminación De Estiércol Porcino Mediante Ensilaje Experimental

Ruvalcaba-Gómez¹,

Arteaga-Garibay

Domínguez-Araujo

et al. 2019

Rev. Int. Contam. Ambie.

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Swine production generates every day a large amount of residues, including nutrients and microorganisms, which potentially contribute to contamination of air, water and soil, and generation of unpleasant odors. Many strategies have been developed in order to mitigate the contaminant effect of swine manure and to take advantage of its nutrients and beneficial compounds; silage is an example of these, and consists in swine manure fermentation mainly under anaerobic conditions. The aim of this study was to assess the effect of applying a process of silage to swine manure added with two different sources of carbohydrates and two different sources of lactic-acid bacteria, under the reduction of different microbiological indicators. Through the process, it was observed the reduction of pH levels (until reaching 4.6) and microbial content, mainly for coliforms (reduction greater than 5 log), molds and yeasts, and total elimination of enterococci. On the other hand, significant decline was not reported for the lactic-acid bacteria content, main responsible of fermentation process. Best results were observed through using sorghum as a source of carbohydrates and cheese whey as a source of lactic-acid bacteria, for both, decrease of pH and reduction of some microbiological indicators, including bacteria that produce sulfuric acid. Therefore, silage process, applied to swine manure, induces the decrease of pH for action of lactic-acid bacteria until limit the survival of bacteria associated with fecal contamination, making of swine a transformed and microbiologically safe residue for its handling and subsequent use.

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“…Some multi-stage biological treatment processes, such as combined sequencing batch reactors (SBRs) and constructed wetlands (CWs) (Moir et al, 2005), and aerated settling tanks followed by vertical flow CWs (Merlin and Gaillot, 2010), have been used with varying degrees of success; however, much of the organic and nutrient reductions in these studies have been reported to occur in the aeration rather than in the passive processes. Passive treatment systems such as sand filters (Rodgers et al, 2005;Healy et al, 2007) and woodchip filters (Ruane et al, 2011;McCarthy et al, 2015) have also been investigated and have reported consistently high levels of organic, nutrient and pathogenic removal. Woodchip, in particular, is a cheap, biodegradable material which has potential use as a soil improver (Cogliastro et al, 2001;Miller and Seastedt, 2009) and has previously shown to be effective in improving effluent quality and ammonia emissions when used in out-wintering pads (Dumont et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Assessment of intermittently loaded woodchip and sand filters to treat dairy soiled water

et al. 2016

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Land application of dairy soiled water (DSW) is expensive relative to its nutrient replacement value. The use of aerobic filters is an effective alternative method of treatment and potentially allows the final effluent to be reused on the farm. Knowledge gaps exist concerning the optimal design and operation of filters for the treatment of DSW. To address this, 18 laboratory-scale filters, with depths of either 0.6 m or 1 m, were intermittently loaded with DSW over periods of up to 220 days to evaluate the impacts of depth (0.6 m versus 1 m), organic loading rates (OLRs) (50 versus 155 g COD m-2 d-1), and media type (woodchip versus sand) on organic, nutrient and suspended solids (SS) removals. The study found that media depth was desirable than woodchip filters. Using the optimal designs of both configurations, the filter area required per cow for a woodchip filter is more than four times less than for a sand filter. Therefore, this study found that woodchip filters are more economically and environmentally effective in the treatment of DSW than sand filters, and optimal performance may be achieved using woodchip filters with a depth of at least 1 m, operated at an OLR of 155 g COD m-2 d-1 .

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An investigation into the removal of Salmonella and enteric indicator bacteria from the separated liquid fraction of raw or anaerobically digested pig manure using novel on-farm woodchip biofilters

Cited by 6 publications

References 20 publications

An overview of Irish pig production, research and knowledge transfer since 1960

An overview of Irish pig production, research and knowledge transfer since 1960

Uso De Bacterias Ácido Lácticas Para Descontaminación De Estiércol Porcino Mediante Ensilaje Experimental

Assessment of intermittently loaded woodchip and sand filters to treat dairy soiled water

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