Design of Trickling Filter Nitrification Towers

New empirical trickling filter nitrification tower design curves were developed from pilot-scale study data and show good agreement with recent fixed-film theoretical concepts and models. The selection of plastic media surface area, bulk volume, and bed depth is based on ammonium (${\rm NH}_{4}{}^{+...

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Bibliographic Details
Published in:Journal - Water Pollution Control Federation 1986-01, Vol.58 (1), p.60-67
Main Authors: Gullicks, H. A., Cleasby, J. L.
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Biological treatment of waters
Biotechnology
Environment and pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General purification processes
Hydraulics
Industrial applications and implications. Economical aspects
Liquids
Loading rate
Nitrification
Nitrogen
Oxygen
Pollution
Process Design
Reactants
Surface areas
Wastewater
Wastewaters
Water pollution
Water treatment and pollution
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Summary:New empirical trickling filter nitrification tower design curves were developed from pilot-scale study data and show good agreement with recent fixed-film theoretical concepts and models. The selection of plastic media surface area, bulk volume, and bed depth is based on ammonium (${\rm NH}_{4}{}^{+}$-N) loading criteria (applied hydraulic loading rate and applied ${\rm NH}_{4}{}^{+}$-N concentration including recirculation) and wastewater temperature. The new design curves are superior to those in the EPA Process Design Manual for Nitrogen Control because the EPA curves are based on effluent quality regardless of loading. Considerable data scatter is evident in the EPA curves, which indicates that effluent quality alone does not satisfactorily predict plastic media surface area required for nitrification towers. Furthermore, the new design curves can be applied to recirculation situations, whereas the EPA curves cannot.
ISSN:0043-1303
2327-7467