Notice of RetractionEffect of operation parameters on the performance of biological aerated filter in a full-scale wastewater treatment plant

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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Biological Aerated Filter (BAF) with Biostyrene media was used in Qingdao Maidao Wastewater Treatment Plant for municipal wastewater treatment. This study was conducted to identify the optimized operation parameters of biological aerated filter (BAF) in a full-scale wastewater treatment plant, and provide scientific data for design and promotion of this process. The results showed that when COD and NH₃-N in influent were between 60~260mg/L and 22~65mg/L, respectively, the optimum hydraulic loading was between 2.5~3.2m³/(m^2·h), the optimum gas-liquid ratio was 5:1, the optimum COD loading and NH₃-N loading in influent were between 2.2~3.3kg/(m^3·d) and 0.4~0.8kg/(m^3·d), respectively, and the optimum temperature was between 15~28°C.