Removal of nitrogen from tile drainage

by California. Dept. of Water Resources.

1971 30 pages eng

Studies have shown that it is technically feasible to reduce 20 mg /l nitrate-nitrogen in agricultural tile drainage to 2-5 mg/l by either algae stripping or bacterial denitrification. Conditions necessary for maximum algal growth included 8- to 12-inch pond depth, addition of small amounts of nutri…