Pathogen Inactivation and the Chemical Removal of Phosphorus from Swine Wastewater

Inactivation of pathogens present in animal manure prior to land application has justified the use of advanced technologies. However, some alternatives are expensive or not effective due to the organic material and suspended solids present in the effluent (e.g., ozone, UV light). The use of hydrated...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2015-07, Vol.226 (8), p.1-9, Article 263
Main Authors: Viancelli, A., Kunz, A., Fongaro, G., Kich, J. D., Barardi, C. R. M., Suzin, L.
Format: Article
Language:English
Subjects:
Animal manures
Animal wastes
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
Calcium hydroxide
Climate Change/Climate Change Impacts
E coli
Earth and Environmental Science
Effluents
Environment
Environmental monitoring
Escherichia coli
Experiments
Fertilizers
Hydrogeology
Inactivation
Lime
Manures
Microorganisms
Pathogens
Phosphorus removal
Porcine circovirus
Salmonella
Salmonella enterica
Sewage treatment
Soil Science & Conservation
Suspended solids
Swine production
Ultraviolet radiation
Wastewater
Wastewater treatment
Water
Water Quality/Water Pollution
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Summary:Inactivation of pathogens present in animal manure prior to land application has justified the use of advanced technologies. However, some alternatives are expensive or not effective due to the organic material and suspended solids present in the effluent (e.g., ozone, UV light). The use of hydrated lime (calcium hydroxide, Ca(OH) 2 ) is an attractive wastewater treatment option due to the ability of lime to kill pathogens and to extract phosphorus from manure at an alkaline pH. The present study aimed to evaluate the soluble phosphorus removal and pathogen inactivation ( Escherichia coli , Salmonella enterica serovar typhymurium and Porcine circovirus type 2), in the liquid fraction and in the solid generated after Ca(OH) 2 addition in swine wastewater, exposed for 3 and 24 h at different pH conditions: 9.0, 9.5, and 10.0. The results showed the efficiency of pH elevation with Ca(OH) 2 in the removal of soluble P at pH 9.0 and the total inactivation of E. coli , Salmonella , and P. circovirus type 2 at pH 10.0. The liquid fraction (reuse water) could be safely used for cleaning the swine production facilities, and the solid fraction (precipitated P) could be used as a secondary product and fertilizer.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-015-2476-5