Abstract: The invention relates to an apparatus for treating foodstuff containers by spraying with a biocide-containing treatment liquid in at least one treatment zone (Z1-Z4) equipped with spraying means (B) for spraying the containers, the apparatus further comprising transport means for transporting the containers through the treatment zones (Z1-Z4), at least one generator (G1) for producing a biocide solution, at least one heating device for heating the treatment liquid, lines for supplying the biocide solution from the generator (G1) to the treatment zones (Z1-Z4) and, optionally, to at least one further biocide consumer device (BV1, BV2), lines for supplying the treatment liquid to the treatment means (B), as well as valves (V1-V7), controllable metering devices and pumps required for controlling the liquid flows, characterized in that a) the apparatus comprises at least two generators (G1, G2) for producing the biocide solution, and b) the generators (G1, G2) are connected or connectable neither directly nor

Abstract: The disclosure relates to methods for operating a pasteurizing device for pasteurizing foods filled into sealed containers. The foods are treated in treatment zones by applying a tempered, aqueous treatment liquid to an exterior of the containers. The treatment liquid is re-supplied to at least one treatment zone for reuse via circulation circuit pipes of a circulation circuit. A partial flow of the treatment liquid is continuously removed from the circulation circuit and filtered by means of a membrane filtration means. Furthermore, a biocide is apportioned to the treatment liquid as process chemical, such that a concentration of the biocide does not exceed 0.4 mmol/L. In addition, a pH-regulating agent comprising at least one inorganic or organic acid is apportioned to the treatment liquid as process chemical, such that a pH value of the treatment liquid is set to a range from 3.5 to 7.0.

Abstract: The disclosure relates to methods for operating a pasteurizing device for pasteurizing foods filled into sealed containers. The foods are treated in treatment zones by applying a tempered, aqueous treatment liquid to an exterior of the containers. The treatment liquid is re-supplied to at least one treatment zone for reuse via circulation circuit pipes of a circulation circuit. At least one actual value of a concentration of at least one chemical substance contained in the treatment liquid and/or of at least one process chemical added and/or of at least one internal standard added is detected by means of at least one concentration measurement sensor at at least one measurement point. A concentration, in the treatment liquid, of the at least one contained chemical substance and/or of the at least one process chemical added is manipulated on the basis of a detected actual value.