Impact of the thermal treatment of pig slurry on vegetative and spore forming bacteria

Microbiological risk from pig slurry is considered a major public health problem, as pathogenic microorganisms can be spread from land application of manure. Furthermore, with growing demand of water quality for domestic and industrial use, it is becoming necessary to find reliable methods for sanitisation that are economically acceptable. In this context, the aim of this study was to establish the effectiveness of thermal sanitation of pig slurry. The continuous pilot plant 115 litres/hour) used in this study, comprised two tubular heat exchangers followed by hot liquid retention set at 10 minutes