FIELD: agriculture.
SUBSTANCE: fine powder of peat ash of dry removal is fed simultaneously with the feeding of exhaust gases into the drain cavity. The fine powder of peat ash of dry removal together with the flow of exhaust gases is fed to the inner surface of the drainage pipes and the slits of the drainage pipes. The peat ash of dry removal blocks the bacterial process of transformation of iron compounds in insoluble forms.
EFFECT: increased intensity of suppression of iron bacteria life activity.
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