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Effects of biomass entrapment and carrier properties on the performance of an air-fluidized-bed biofilm reactor

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In air-fluidized-bed bioreactors (AFBBR) for wastewater treatment, reactions were found to take place mainly in the biofilm formed on the surface of the carriers, even when a large number of microorganisms were immobilized in the carriers by an entrapping method. A cylindrically shaped, expanded polypropylene carrier (CEPPC) that is capable of holding a large quantity of microorganisms was developed and tested in continuous experiments. The AFBBR process was proven to be applicable to a high biological oxygen demand (BOD) loading treatment, and the ammonia nitrogen removal rate of the AFBBR process was determined to be higher than that of the fill-and-draw type activated sludge process.

Keywords: bioreactor; carrier; entrapment; immobilization methods; loading

Document Type: Research Article


Publication date: 1992-11-01

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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