Browsing NIVA-rapporter by Subject "dykket filter"
Now showing items 1-1 of 1
-
Nitrification with submerged filters. Air supply and comsumption at the pilot-plant at the Bekkelaget treatment plant
(NIVA-rapport;2447, Research report, 1990)During the three months research period (October 1989 - January 1990) the average nitrification efficiencies for municipal sewage were 48% and 61 % for respectively one-step and two-step biological submerged filters placed ...