Volatile fatty acids (VFAs) derived from food waste were used as an alternative carbon source in biological nutrient removal. The pH Profiles were monitored during the nutrient removal in an Na-acetate fed sequencing batch reactor (SBR) (C source). Effluent N, P and SCOD concentrations of 0.5 and 0.1 mg/L were achieved with 5.5 hour of HRT (hydraulic retention time) when influent concentrations of NH4+-N, PO43. and SCOD were 42.5, 5.92 and 180mg/L. Then the SBR was fed with four solutions of VFAs produced under different acidogenesis conditions of food wastes. VFAs-added SBR showed similar specific nitrification rates (3.0 to 3.9 mg-N/g MLSS·h) to that of acetate, but specific denitrification rates (3.2 to 4.2 mg NO3.-N/g MLSS·h) were slightly lower than with acetate of 4.67 mg NO3.-N/g MLSS·h. VFAs-introduced SBR efficiently removed phosphorus except when the SBR was fed with a VFAsolution containing high amounts of valerate and caproate.

Biological Nutrient Removal (BNR) Food Wastes Sequencing Batch Reactor (SBR) Volatile Fatty Acids (VFAs)

Ahn YH, Process Biochem., 41, 1709 (2006)
Reynolds TD, Richards PA, Unit operations and processes in environmental engineering, International Thomson Publishing (1998)
Tran HT, Park YJ, Cho MK, Kim DJ, Ahn DH, Biotechnol. Bioprocess Eng., 11, 199 (2006)
Chang HN, Moon RK, Park BG, Lim SJ, Choi DW, Lee WG, Song SI, Ahn YH, Bioprocess Eng., 23, 513 (2000)
Chang HN, Lim SJ, Lee WG, Kim DJ, Korea Patent 0470956 (2005)
Shin SE, Choi DB, Lee CB, Cha WS, Biotechnol. Bioprocess Eng., 11, 325 (2006)
Silapakul S, Powtongsook S, Pavasant P, Korean J. Chem. Eng., 22(3), 393 (2005)
Lim SJ, Moon RK, Lee WG, Kwon S, Park BG, Chang HN, Biotechnol. Bioprocess Eng., 5, 441 (2000)
Lim SJ, Choi DW, Lee WG, Kwon S, Chang HN, Bioprocess Eng., 22, 545 (2000)
Chang HN, Lim SJ, Lee WG, Kim DJ, Korea Patent 0471963 (2005)
Lim SJ, Ahn YH, Kim EY, Chang HN, Biotechnol. Bioprocess Eng., 11, 538 (2006)
Shin HS, Jun HB, Park HS, Biodegradation, 3, 105 (1992)
Hao OJ, Huang J, Water Environ. Res., 68, 83 (1996)
Akin BS, Ugurlu A, Process Biochem., 40, 2873 (2005)
Chang CN, Yu RF, Chao AC, Seishu T, Water Sci. Technol., 30, 265 (1994)
Yu RF, Liaw SL, Chang CN, Lu HJ, Chang WY, Water Sci. Technol., 35, 57 (1997)
Kishida N, Kim JH, Chen M, Sasaki H, Sudo R, J. Biosci. Bioeng., 96(3), 285 (2003)
Fass S, Ganaye V, Urbain V, Manem J, Block JC, Environ. Technol., 15, 459 (1994)
Choi DW, Lee WG, Lim SJ, Kim BJ, Chang HN, Biotechnol. Bioprocess Eng., 8, 23 (2003)
Charpentier J, Godart H, Martin G, Mogno Y, Water Sci. Technol., 21, 1209 (1989)
Wouters-Wasiak K, Heduit A, Audic JM, Lefevre F, Water Sci. Technol., 30, 207 (1994)
American Public Health Association, Standard methods for examination of water and wastewater, 19th ed., American Public Health Association, Washington DC, USA (1995)
Al-Ghusain AI, Huang J, Hao OJ, Lim BS, Water Sci. Technol., 30, 159 (1994)
Al-Ghusain AI, Hao OJ, J. Environ. Eng.-ASCE, 121, 225 (1995)
Abufayed AA, Schroeder ED, J. WPCF, 59, 398 (1986)
Jones WL, Wilderer PA, Schroeder ED, J. WPCF, 62, 268 (1990)
Smolders GJ, Vandermeij J, Vanloosdrecht MC, Heijnen JJ, Biotechnol. Bioeng., 43(6), 461 (1994)
Kuba T, Wachtmeister A, van Loosdrecht MCM, Heijnen JJ, Water Sci. Technol., 30, 263 (1994)
Silapakul S, Powtongsook S, Pavasant P, Korean J. Chem. Eng., 22(3), 393 (2005)
Poo KM, Im JH, Ko JH, Kim YJ, Woo HJ, Kim CW, Korean J. Chem. Eng., 22(5), 666 (2005)
Hou X, Qi Y, Qiao X, Wang G, Qin Z, Wang J, Korean J. Chem. Eng., 24(2), 311 (2007)
Jung JY, Khan T, Park JK, Chang HN, Korean J. Chem. Eng., 24(2), 265 (2007)
Park OH, Han JE, Korean J. Chem. Eng., 24(2), 233 (2007)