[Sanitation of biowaste compost by using Salmonella enteritidis as a pathogen indicator and survival of Salmonella in seepage water].
The following investigations show the frequency of the occurrence of Salmonella in biowastes. Salmonellae, belonging to the serotypes Salmonella enteritidis, infantis and agona were detected in 50% of the investigated biowaste samples. In order to control the reliability of compositing techniques on eliminating pathogens, Salmonella enteritidis was used as a pathogen indicator, which was brought into a container composting process and investigated on it's decline. Although the input indicator bacteria were eliminated in every case latest until the end of container composting, Salmonella was detected in 36% of the investigated fresh compost samples. Every time when Salmonella was detected in input material, the same serotypes were to be found in seepage water and survived there until the end of intensive rot. In laboratory experiments the maximum survival time of Salmonella enteritidis in seepage water at +5 degrees C was 42 days. Seepage water was found out to be a reservoir for survival of Salmonellae and has to be considered as a permanent source of contamination. In the question of the disposal of seepage water there are disagreements between the instructions of TA Siedlungsabfall and TA Luft.
Knop
M
M
Universität Leipzig, Veterinärmedizinische Fakultät, Institut für Tierhygiene und Offentliches Veterinärwesen.
Pöhle
H
H
Bergmann
A
A
D000822:Animal Husbandry; D000818:Animals; D004197:Disease Reservoirs; D012475:Salmonella / Q000302:isolation & purification*; D012477:Salmonella enteritidis / Q000302:isolation & purification* / Q000472:pathogenicity; D018505:Waste Management; D014871:Water Microbiology