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Performance of upflow anaerobic sludge blanket reactor carrying out biological hydrolysis of urea

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Abstract:

ABSTRACT:

Biological hydrolysis of urea was studied in an upflow anaerobic sludge blanket (UASB) reactor. Methanol was used as the source of carbon. Modified diacetyl monoxime method was used for the determination of urea in samples having a high background of ammoniacal nitrogen to hydrolyse 100% urea at loadings of 7.09 kg/m3 bed vol/d and below. The reactor could be operated at 100% efficiency with NH4 +-N loading of 3.43 kg NH4 +-N/m3 bed vol/d. The highest COD utilization rate was 2.32 kg/m3 bed vol/d. The advantages of the UASB reactor over the fixed film-fixed bed (FFFB) and the continuous flow stirred tank reactor (CFSTR) are discussed in the paper.

Keywords: COD loading; UASB; ammonia; biological hydrolysis; diacetyl monoxime; urea loading

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/WER.66.1.3

Publication date: January 1, 1994

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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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