The influence of various doses of zeolites on plate counts of salmonellae, coliform and fecal coliform microorganisms in pig slurry under laboratory conditions

Veterinarni Medicina 42, 1997, 161-164

The possibilities of utilization of two types of natural zeolite and three samples of synthetic zeolite in the treatment of pig slurry in various stages of waste water treatment process were investigated from the microbiological and chemical points of view at various amounts of zeolite and different contact time. Results obtained indicate that the addition of zeolites resulted in a decrease in the number of microorganisms in the supernatant during the period of investigation in all types of zeolites tested. Per cent of decrease varied considerably in dependence on the time of contact. This observation gains an importance in connection with a considerable decrease in chemical pollution

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