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NITROGEN REMOVAL BY A MEMBRANE BIOREACTOR

Yuichi Suwa, Yoshikuni Urushigawa, Yoshitaka Yonezawa

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Abstract

Nitrogen removal by a bioreactor equipped with membrane filtration was studied. Nitrogen and BOD removal rates were determined. Although the physiological characteristics of microorganisms responsible for nitrification and denitrification were quite different, the results obtained in this study demonstrated that a single-stage single-sludge activated sludge process with membrane filtration allowed both to be maintained with fairly high activity.

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What this paper is about

Nitrogen removal by a bioreactor equipped with membrane filtration was studied. Nitrogen and BOD removal rates were determined. Although the physiological characteristics of microorganisms responsible for nitrification and denitrification were quite different, the results obtained in this study demonstrated that a single-stage single-sludge activated sludge process with membrane filtration allowed both to be maintained with fairly high activity.

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Available abstract

Nitrogen removal by a bioreactor equipped with membrane filtration was studied. Nitrogen and BOD removal rates were determined. Although the physiological characteristics of microorganisms responsible for nitrification and denitrification were quite different, the results obtained in this study demonstrated that a single-stage single-sludge activated sludge process with membrane filtration allowed both to be maintained with fairly high activity.

Key concepts: Membrane bioreactor, Activated sludge, Bioreactor, Filtration (mathematics), Denitrification, Simultaneous nitrification-denitrification, Nitrification, Nitrogen

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