Dw. Blowes et al., REMOVAL OF AGRICULTURAL NITRATE FROM TILE-DRAINAGE EFFLUENT WATER USING IN-LINE BIOREACTORS, Journal of contaminant hydrology, 15(3), 1994, pp. 207-221
Citations number
32
Categorie Soggetti
Water Resources","Environmental Sciences","Geosciences, Interdisciplinary
Two 200-L fixed-bed bioreactors, containing porous-medium material of
coarse sand and organic carbon (tree bark, wood chips and leaf compost
), were used to treat NO3 contamination from agricultural runoff. Flow
from a farm-field drainage tile containing NO3-N concentrations of 3-
6 mg L-1 was successfully treated in the reactors (NO3-N < 0.02 mg L-1
) at a rate of 10-60 L day-1 over a 1-yr period. Treatment occurs by a
naerobic denitrification promoted by the added solid-phase organic car
bon. Because the reactor design is simple, economical to construct and
maintenance free, it may provide a practical solution to the problem
of treating redox-sensitive contaminants, such as NO3, in agricultural
runoff.