ABSTRACT
Anthrax spores are very rare to find in municipal waste-water, but if they occur, it will cause a lot of difficulties. The reason why this investigations were carried out was the occurrence of a special problem in a town near Stuttgart. Since there are a lot of tanneries and factories working with hides, the community got the order by the government in the early seventys to burn the sludge from their wastewater treatment plant. The new built sludge incinerator never worked satisfactory and was finally shut down last year, because of the high cromium emission. So the question was, if the sludge could be be brought to the local controlled tipping after a treatment with lime. According to Strauch et al., 1978, lime is a cheap chemical for disinfecting municipal sludge from Salmonella, as well as from other pathogenic microorganisms and a common admixture to sludge for the purpose of neutralisation, desodoration, flocculation, precipitation, sedimentation and dehydration (3,5). No informations were available concerning the effect of lime, especially CaO to anthrax spores in connection with a pressing procedure followed by deposition. Therefore the following experiments were carried out under practical conditions in the above mentioned waste-water treatment plant’and the controlled tipping belonging to the same community.
