Operation of a Novel Anaerobic Biofilter for Treating Food-Processing Wastewater

  • Hong Chua
  • C. N. Cheng
Part of the ABAB Symposium book series (ABAB, volume 57/58)


An anaerobic biofilter was operated with 4500 mg COD/L food-processing waste water, fed at 10 d of hydraulic retention time (HRT). In 45 d after seeding, established biofilms were dominated by dense layers of Methanococcus-like and Methanothrix-likecells. The average COD and grease removal efficiencies were 85 and 53%, respectively, when the HRT was decreased stepwise to 1.5 d. Immobilized biofilms enabled the biofilter to be started up easily, to have stable treatment performance, and to recover rapidly from shock loadings and process failure.

Index Entries

Anaerobic biofilter food-processing waste water grease removal shock loading process recovery 


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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Hong Chua
    • 1
  • C. N. Cheng
    • 2
  1. 1.Department of Civil and Structural EngineeringThe Hong Kong Polytechnic UniversityHung HornHong Kong
  2. 2.Ryoden Development CompanyNorth PointHong Kong

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