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The effect of temperature on adsorption properties of natural zeolite in the solid fraction of pig excrements from the microbiological and chemical points of view

The effect of an addition of natural zeolite was observed at various temperatures and the times of action from the microbiological and chemical points of view within the scope of solving the problems arising from manipulation with the solid fraction of pig slurry. The addition of zeolite resulted in a decreased number of germs in the solid fraction during the entire period of observation although the decrease in per cent varied considerably in dependence on the temperature (4, 20, 37şC). The chemical examination showed a decrease in the content of dry matter, total organic substances and a significant decrease in the content of ammonium nitrogen. The decrease in the number of microorganisms can be evaluated positively in relation to the decreased chemical contamination resulting from application of the solid fraction of pig slurry following the addition of zeolite.

zeolites;adsorption properties; solid fraction of pig slurry; water treatment plant; chemical and microbiological parameters

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