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A platform for research: civil engineering, architecture and urbanism
A Cascade of Anoxic and Oxic Fluidized Bed Biofilm Reactors for Treatment of Synthetic Municipal Wastewater
In this study, a cascade of anoxic and oxic fluidized bed biofilm reactors system was carried out to treat synthetic municipal wastewater. The parameters of the influent flow rates and C/N ratios were discussed. System performance was acceptable for chemical oxygen demand (COD), ammonia, and total nitrogen removal. A decrease of ammonia and total nitrogen removal efficiencies, however, was observed when the influent flow rates increased to 5.04 and 6.12 l h−1. Total nitrogen removal decreased at the influent C/N ratio of 3:1. The measured ratios of COD reduction in the anoxic column to nitrogen removal through nitrification‐denitrification were 3.7, 3.5, 3.3, and 3.1 g COD/g−1 N on average when the influent C/N ratios changed from 6:1 to 3:1. The observed sludge yield (Yobs) was 0.169 g VSS g COD−1 because of perfect denitrification in the anoxic column and the relatively long solids retention time.
A Cascade of Anoxic and Oxic Fluidized Bed Biofilm Reactors for Treatment of Synthetic Municipal Wastewater
In this study, a cascade of anoxic and oxic fluidized bed biofilm reactors system was carried out to treat synthetic municipal wastewater. The parameters of the influent flow rates and C/N ratios were discussed. System performance was acceptable for chemical oxygen demand (COD), ammonia, and total nitrogen removal. A decrease of ammonia and total nitrogen removal efficiencies, however, was observed when the influent flow rates increased to 5.04 and 6.12 l h−1. Total nitrogen removal decreased at the influent C/N ratio of 3:1. The measured ratios of COD reduction in the anoxic column to nitrogen removal through nitrification‐denitrification were 3.7, 3.5, 3.3, and 3.1 g COD/g−1 N on average when the influent C/N ratios changed from 6:1 to 3:1. The observed sludge yield (Yobs) was 0.169 g VSS g COD−1 because of perfect denitrification in the anoxic column and the relatively long solids retention time.
A Cascade of Anoxic and Oxic Fluidized Bed Biofilm Reactors for Treatment of Synthetic Municipal Wastewater
Chen, Y.W. (author) / Wang, J.M. (author) / Zang, C.L. (author) / Huang, Q. (author) / Liu, M.Q. (author) / Zhu, S.M. (author) / Shen, S.B. (author)
Water Environment Research ; 84 ; 128-133
2012-02-01
6 pages
Article (Journal)
Electronic Resource
English
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