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Water SA

On-line version ISSN 1816-7950
Print version ISSN 0378-4738

Water SA vol.34 n.1 Pretoria Jan. 2008

 

Maximum growth and decay rates of autotrophic biomass to simulate nitrogen removal at 10°C with municipal activated sludge plants

 

 

J-M ChoubertI; A MarquotII; A-E StrickerIII; S GillotI; Y RacaultII; A HeduitI

ICEMAGREF Hydrosystems and Bioprocesses Research Unit, Parc de Tourvoie - BP 44, 92163 Antony Cedex, FRANCE
IICEMAGREF Networks, Water Treatment and Quality Research Unit, 50 avenue de Verdun, 33612 Cestas, FRANCE
IIIEnvironment Canada, 867 Lakeshore Road - CP 5050, Burlington - Ontario L7R 4A6, CANADA

Correspondence

 

 


ABSTRACT

The present study aims at determining most likely values for the maximum growth rate (µA, max) and the endogenous decay rate (bA) of nitrifiers for activated sludge processes treating municipal wastewater operated at low temperature (10°C). The work used nitrification rate data measured on 10 full-scale plants and 2 pilot plants fed with domestic sewage. This set of data was combined with a modelling and a theoretical approach. The unified values (µA, max = 0.45-d-1 and bA = 0.13-d-1) were obtained at 10°C for the kinetic parameters of the autotrophic biomass in the SRT range 10 to 50 d. In addition, the factors affecting the expected nitrification rate (rv, nit) were established by a theoretical approach and confirmed by experimental results. For a given SRT, a linear relationship with the nitrogen volumetric loading rate was shown. The COD/TKN ratio of the influent on the nitrification rate was demonstrated. Finally, an operational tool for the verification of the nitrification rate in the design procedure of activated sludge processes is proposed.

Keywords: nitrification; kinetics; low temperature; autotrophic biomass, maximum growth rate; decay rate


 

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References

AL-SA'ED R (1988) Investigations on nitrification of ammonia rich wastewater in activated sludge systems. Water Supply 6 235-242.         [ Links ]

BURICA O, STRAZAR M and MAHNE I (1996) Nitrogen removal from wastewater in a pilot plant operated in the recirculation anoxic-oxic activated sludge mode. Water Sci. Technol. 33 (12) 255-258.         [ Links ]

CHOUBERT JM and RACAULT Y (2000) Assessment of the evolution of nitrification capacity in activated sludge process. Proc. 1st World Water Congress of the International Water Association (IWA) (ISBN: 2-9515416-0-0). 3-7 Jul 2000, Paris (France). 1-4.         [ Links ]

CHOUBERT JM, RACAULT Y, GRASMICK A, BECK C AND HEDUIT A (2005) Nitrogen removal from urban wastewater by activated sludge process operated over the conventional carbon loading rate limit at low temperature. Water SA 31 (4) 503-510.         [ Links ]

DOLD PL (2002) Importance of decay rate in assessing nitrification kinetics. Proc. Weftec 2002, 76th Annual Conference & Exhibition. 11-15 Oct 2003, Los Angeles, California (USA). 1-21.         [ Links ]

DOLD PL, JONES RM and BYE CM (2005) Importance and measurement of decay rate when assessing nitrification kinetics. Water Sci. Technol. 52 (10-11) 469-477.         [ Links ]

FILLOS J, KATEHIS D, RAMALINGAM K, CARRIO LA and GOPALAKRISHNAN K (2000) Determination of nitrifier growth rates in NYC water pollution control plants. Proc. Weftec 2000, 73th Annual Conference & Exhibition. Date? Anaheim, California (USA).pp 1-17.         [ Links ]

HENZE M, GRADY CPL, GUJER W, MARAIS GVR and MATSUO T (1987) Activated Sludge Model N°l, 1AWQ Scientific and Technical report. N°1, IAWPRC, London. ISSN: 1010-707X 1-33.         [ Links ]

HENZE M, HARREMOËS P, LA COUR JANSEN J AND ARVIN A (1996) Wastewater Treatment. Biological and Chemical Processes. Springer Verlag, Berlin (Germany). 383 pp.         [ Links ]

JONES RM, BYE CM and DOLD PL (2004) Nitrification parameter measurement for plant design-experience and experimental issues with new method. Proc. 4th IWA World Water Congress and Exhibition. Dates? Marrakech (Morocco). 1-8.         [ Links ]

LEE Y and OLESZKIEWICZ JA (2002) Evaluation of maximum growth and decay rates of autotrophs under different physical and environmental conditions. Proc. Weftec 2002, 76th Annual Conference & Exhibition. date? Los Angeles, California (USA). 1-16.         [ Links ]

MARRS D, NEWMAN J, SEN S, BOSWELL N, LUBARSKY M and MELCER H (2004) Field application of WERF low F/M protocol to measure nitrifier growth and endogenous decay. Proc. Weftec 2004. date? New Orleans, Louisiana (USA). 1-28.         [ Links ]

McCARTNEY DM and OLESZKIEWICZ JA (1990) Carbon and nutrient removal in a sequencing batch reactor at low temperatures. Environ. Technol. 11 99-112.         [ Links ]

LOPEZ C, PONS MN and MORGENROTH E (2006) Endogenous processes during long-term starvation in activated sludge performing enhanced biological phosphorus removal. Water Res. 40 (8) 1519-1530.         [ Links ]

NOWAK O, SCHWEIGHOFER P and SVARDAL K (1994) Nitrification inhibition - A method for the estimation of actual maximum autotrophic growth rates in activated sludge systems. Water Sci. Technol. 30(6) 9-19.         [ Links ]

OLESZKIEWICZ JA and BERQUIST SA (1988) Low temperature nitrogen removal in sequencing batch reactors. Water Res. 22 (9) 1163-1171.         [ Links ]

ORHON O, GENCELI EA and SÖZEN S (2000) Experimental evaluation of the nitrification kinetics for tannery wastewaters. Water SA 26 (1) 43-50.         [ Links ]

PALIS JC and IRVINE RL (1985) Nitrogen removal in a low-loaded single tank sequencing batch reactor. JWPCF 57 (1) 82-86.         [ Links ]

PONS MN, SPANJERS H, BAETENS D, NOWAK O, GILLOT S, NOUWEN J and SCHUTTINGA N (2004) Wastewater characteristics in Europe - A survey. European Manager Management [online]. Official Publication of the European Water Association (EWA) 41-10.

STENSEL HD, KE DL, DOLD PL, JONES R, BYE C and MELCER H (2002) Methods for measuring nitrifier maximum specific growth rate: crucial for plant capacity rating. Proc. Weftec 2002, 76th Annual Conference & Exhibition. 11-15 Oct 2003, Los Angeles, California (USA) 1-25.         [ Links ]

THIEM LT and ALKHATIB EA (1988) In situ adaptation of activated sludge by shock loading to enhance treatment of high ammonia content petrochemical wastewater. JWPCF 60(7) 1245-1252.         [ Links ]

YUAN Z, BOGAERT H, DEVISSCHER M, VANROLLEGHEM P, VAN LOOSDRECHT MCM and VERSTRAETE W (1999) On-line estimation of the maximum specific growth rate of nitrifiers in activated sludge systems. Biotechnol. Bioeng. 65 (3) 265-273.         [ Links ]

 

 

 Correspondence:
Cemagref; 3 bis quai chauveau - CP 220
69336 Lyon cedex
France
+33 4 72 20 87 87
Fax: +33 4 78 47 78 75
E-mail: jean-marc.choubert@cemagref.fr

Received 29 January 2007;
Accepted in revised form 12 November 2007.

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