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Activated sludge activity in the treatment of anaerobic sludge digester supernatant

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Języki publikacji
EN
Abstrakty
EN
The objective of the study was to examine the effect of the food/microorganisms (F/M) ratio on the respirometry of activated sludge treating anaerobic sludge digester supernatant at low oxygen concentration (DO) of 0.7 mg O2/dm3. Exogenous respiration rate (SOUR1), endogenous respiration rate (SOUR3) and the rate of oxygen uptake for nitrification (SOUR2) were evaluated. Taking into consideration that BOD5/COD in anaerobic digester supernatant was 0.53, it may be supposed that weak activity of heterotrophic bacteria (low SOUR1) resulted from low DO concentration in the reactor, and not from limited accessibility of biodegradable substrate. At the F/M ratio of 0.05-O.26 g COD/(g TSSd), SOUR 2 was from 2.1-fold to 20.6-fold higher than SOUR1. Further increase in the F/M ratio induced a decline in SOUR2 but the efficiency of nitrification enhanced.
Rocznik
Strony
17--27
Opis fizyczny
Bibliogr. 24 poz., tab., rys.
Twórcy
  • Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland
autor
  • Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland
  • Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland
  • Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland
  • Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland
Bibliografia
  • [1] MARSILI-LIBELLI S.,VAGGI A., J. Biotechnol., 1997, 52, 181.
  • [2] INSEL G.,KARAHAN-GÜL Ö.,ORHON D.,VANROLLEGHEM P.A.,HENZE M., Water Sci. Technol., 2002, 45, 23.
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  • [11] JIANLONG W.,NING Y., Process Biochem., 2004, 39, 1223.
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  • [18] HENZE M., HARREMOËS P., JANSEN J.C., ARVIN E., Wastewater treatment. Biological and chemical processes, Wyd. Polit. Świętokrzyskiej, Kielce, 2002 (in Polish).
  • [19] SÖZEN S.,COKGÖR E.U.,ORHON D.,HENZE M.,Water Res., 1998, 32, 476.
  • [20] LI B.,BISHOP P.L.,Water Res., 2004, 38, 1248.
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  • [22] HEAD M., OLESZKIEWICZ J.A., Processes of ammonium removal from anaerobic sludge digester supernatant, [in:] Philosophy of design and operation of wastewater treatment plant, Course materials, Cracow, 2000, 61 (in Polish).
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-3d0d4cd1-285d-462e-b8af-e799c16ccc3e
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