NDLI: Study on influencing factors of denitrification by a step-feed multistage biofilm reactor

Content Provider	IEEE Xplore Digital Library
Author	He Qiang Gan Lisha Dou Yanyan
Copyright Year	2011
Description	Author affiliation: Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Chongqing University, 400045, China (He Qiang; Gan Lisha; Dou Yanyan)
Abstract	Experiments have been carried out to investigate the effect of biological factors such as organic loading, dissolved oxygen (DO) and temperature on performance of denitrification in a step-feed multi-stage biofilm reactor, for municipal wastewater treatment in small cities and towns.It was found that organic loading, DO and temperature had significant influences on performance of denitrification in the reactor. Under the conditions of the temperature of 20∼25°C, DO of 5 mg/L, organic loading of 1.0kgCOD/m3·d, biofilm density of 30%, nitrogen loading of 0.22kgTN/m3·d, with wastewater fed in the 1st, 3rd and 6th stages, and flow distribution ratio of 2∶2∶1, SND process was successfully constructed in the reactor, the effluent concentration of COD, $NH^{+}−N$ and TN are 33mg/L, 2.6mg/L and 29.4mg/L respectively, the removal efficiencies of COD, $NH^{+}−N$ and TN are 90.1%, 96.0% and 63.9% respectively. When the water temperature is below 15°C, nitrification rate is affected by the temperature notably.
Starting Page	1730
Ending Page	1733
File Size	288094
Page Count	4
File Format	PDF
ISBN	9781424480364
e-ISBN	9781424480395
DOI	10.1109/ICEICE.2011.5777365
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature Biological denitrification Loading Effluents Biofilm Step-feed Biology Nitrogen Wastewater Inductors
Content Type	Text
Resource Type	Article

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