Rotating biological contactors: a review on main factors affecting performance |
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Authors: | S Cortez P Teixeira R Oliveira M Mota |
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Institution: | (1) IBB – Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal |
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Abstract: | Rotating biological contactors (RBCs) constitute a very unique and superior alternative for biodegradable matter and nitrogen
removal on account of their feasibility, simplicity of design and operation, short start-up, low land area requirement, low
energy consumption, low operating and maintenance cost and treatment efficiency. The present review of RBCs focus on parameters
that affect performance like rotational speed, organic and hydraulic loading rates, retention time, biofilm support media,
staging, temperature, influent wastewater characteristics, biofilm characteristics, dissolved oxygen levels, effluent and
solids recirculation, step-feeding and medium submergence. Some RBCs scale-up and design considerations, operational problems
and comparison with other wastewater treatment systems are also reported. |
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Keywords: | Aerobic/Anaerobic/Anoxic RBC Design Medium submergence Rotational speed Scale-up Staging |
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