Appropriate disposal of the ever increasing amounts of sludge has become a vital problem to sewage treatment plants. This paper gives both theoretical principles to thermal and chemical inactivation of sludges and experimental data. Bacteriological and parasitological examinations of the sludge were carried out prior to, and following completion of, the inactivation process. The chemical composition of decontaminated sludges is given as well. The experiments show that sewage sludges deactivated with quicklime may be used for agricultural purposes.
Cebula, J. (1981), O gospodarce osadami sciekowymi w Polsce (Sewage sludge management in Poland), Ochrona Srodowiska, 365, 54-56.
2.
Edds, G.T. & Davidson, J.M. (1981), Sewage sludge viral and pathogenic agents in soil-plant-animal systems, EPA-600/S1-81-026. U.S. Environmental Protection Agency, Cincinnati, Ohio , U.S.A.
3.
Kempa, E.S. & Marcinkowski, T. (1982), Primenenie negashenoy izvestii dlya obezvozhivaniya i dezaktivacii osadkov stochnykh vod (Application of quicklime to decontaminate sewage sludges). In P roceedings of the Conference Effektivnye Metody i Sooruzheniya dlya Ochistki Bytovykh i Promyshlennykh Stochnykh Vod, Varna, 15-19 October 1982. Tom, 2, 233-235.
4.
Romanenko, N.A. & Khizhnyak, N.L. (1981), Puti povysheniya effektivnosti degelmintizacii stochnykh vod na ochistnykh sooruzheniyakh pered podachei ikh na oroshenie (Methods of improving the efficiency of worm kill in wastewaters prior to agricultural application), Gigiena i Sanitaria, 11, 19-21.
5.
Strauch, D. & Schreiber-Rotschild, R. (1980), Mikrobiologische Untersuchungen zur Higienisierung von Klärschlamm. 8. Mitteilung: Der Einfluß von Kalk als Konditionierungsmittel bei Kammerfilterpressen (Microbiological investigations on the inactivation of sewage sludges. 8th Report: The effect of lime as a conditioning agent in filter-press treatment), g w f Wasser-Abwasser , 12, 607-611.
6.
Tabasaran, O. (1980), Stabilizzazione di fanghi primari e digeriti con calce viva (Stabilization of primary and digested sludges with quicklime) , Ingegneria ambientale, 4, 304-310.
7.
Who (1981), The risk of health of microbes in sewage sludge applied to land, EURO Reports and Studies54. Regional Office for Europe, WHO , Copenhagen.
