Blar i Norsk institutt for vannforskning på emneord "oksygenforsyning"
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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 ...