volume 41, issue 2, P295-302 2007
DOI: 10.1016/j.watres.2006.10.019
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Hui-Ping Chuang, Akiyoshi Ohashi, Hiroyuki Imachi, Madan Tandukar, Hideki Harada

Abstract: Combining the processes of partial nitrification and anaerobic ammonium oxidation (ANAMMOX) is an attractive wastewater-treatment technology for nitrogen removal. In this study we investigated partial nitrification by implementing a closed down-flow hanging sponge (DHS) reactor operated at controlled oxygen concentrations. Basic concept of DHS process is similar to that of trickling filter, in which oxygen concentration can be easily manipulated by controlling airflow to the reactor. The closed reactor was fed…

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