Experimental study of Nutrient Removal by Endogeneous Nitrate Respiration (ENR) Mechanism in domestic wastewater 


Vol. 8,  No. 2, pp. 77-83, Jun.  2002


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  Abstract

The purpose of this study is to develop the efficient nutrient removal process and to verify operation and design parameters in domestic sewage. Endogenous nitrate respiration (ENR) was used for denitrification of nitrate in return sludge without additional organic carbon source. ENR reactor before the anaerobic tank enable to reduce nitrate below 3 mg/L and increase phosphate release at anaerobic reaction. Primary effluent during pilot scale plant were shown as TCOD/TP ratio of 40~60 and TCOD/TKN ratio of 5~7. Effluent concentrations were 10 to 12mg/L as TN and 1mg/L as TP respectively. In lab scale experiments endogenous denitrification rate of ENR reactor ranges from 0.042 to 0.057gNO3-N/gMv.d. SPrel/SCODrm was shown as from 0.13 to 0.17 in anaerobic reaction. These kinetic parameters are expected to be available for BNR(Biological Nutrient Removal) plant design and ENR reaction is available for nutrient removal in low strength wastewater.

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  Cite this article

[IEEE Style]

P. MG, A. WS, L. ES, H. YR, P. CB, "Experimental study of Nutrient Removal by Endogeneous Nitrate Respiration (ENR) Mechanism in domestic wastewater," Clean Technology, vol. 8, no. 2, pp. 77-83, 2002. DOI: .

[ACM Style]

Park MG, Ahn WS, Lee ES, Heo YR, and Park CB. 2002. Experimental study of Nutrient Removal by Endogeneous Nitrate Respiration (ENR) Mechanism in domestic wastewater. Clean Technology, 8, 2, (2002), 77-83. DOI: .

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

한국연구재단 등재학술지