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- W2108731601 abstract "Airlift-loop reactors have become competitive in treating municipal wastewater. Many studies have verified that high COD conversion efficiencies can be reached. When simultaneous nitrification and denitrification could be realised to the same degree as is possible in low loaded conventional activated sludge processes, their application would be more interesting. In theory nitrification and denitrification are simultaneously possible in an airlift-loop reactor. Based on qualitative assumptions, the biofilm around a particle in an airlift-loop reactor hypothetically can contain an aerobic layer for carbonaceous oxidation and nitrification and an anoxic layer for denitrification. The aim of the research described in this report is to test this hypothesis by a pilot-scale experiment treating municipal wastewater. The experimental results demonstrate that the hypothesis is correct. During about 30 days it was possible to remove 70- 80% of the nitrogen at a hydraulic retention time of 1.5 h. For unfiltered effluent samples, which included the sludge production as suspended solids, COD removal was about 70% compared to the unfiltered influent. Further research is needed to establish the relation between the thickness of the biofilm and the concentration of dissolved oxygen in relation to nitrification and denitrification and overall reactor performance." @default.
- W2108731601 created "2016-06-24" @default.
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- W2108731601 date "1993-06-30" @default.
- W2108731601 modified "2023-09-27" @default.
- W2108731601 title "Feasibility of simultaneous nitrification and denitrification in a pilot-scale airlift-loop reactor" @default.
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