Analysis on the Start-up of Campus Sewage Treatment with 3-Stage Biological Aerated Filter

Abstract:

In this study, the alternating 3-stage biological aerated filter system with the brush as the filler was proposed for campus sewage treatment and the biofilm formation process was researched. Adopting the four-stage inoculated biofilm formation method, the treatment effects of the 3 filter columns respectively lasted 23d, 20d, 23d to reach stable. After the attached biofilm grew steadily, the effluent COD concentration was between 45 mg/L and 95 mg/L, and the removal efficiency was 77%~85%. The effluent NH₄⁺-N concentration of 1st and 3rd filter columns was 11~25 mg/L, and the removal efficiency was 47%~67%; while the effluent NH₄⁺-N concentration of 2nd filter column was 8 ~19 mg/L, the removal efficiency was 64%~ 78%.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 1376-1379
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.1376
• Online since: February 2013
• Authors: Lei Zhu, Fang Xing Liu, Xiao Lin Jiang, Hong Jiao Song
• Keywords: 3 Stage, Alternated Influent, Biofilm Formation, Biological Aerated Filter (BAF), Removal Effect

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