Korean Journal of Chemical Engineering, Vol.29, No.7, 886-890, July, 2012
Inhibitory effect of 2,4-dichlorophenol on nitrogen removal in a sequencing batch reactor
E-mail:
We examined the inhibitory effect of 2,4-dichlorophenol (2,4-DCP) on nitrogen removal in the sequencing batch reactor (SBR) system. The reactor was operated with FILL, REACT (nitrification: denitrification), SETTLE, DRAW and IDLE phases in the duration ratio of 2 : 12 (9 : 3) : 1 : 1 : 8 for a 24 h cycle time. The deterioration of 2,4-DCP removal efficiency from 100 to 41% was observed when the influent concentration of 2,4-DCP was increased to 30mg/L. The residual 2,4-DCP remaining in the mixed liquor was found to inhibit the nitrification process, resulting in the decrease of nitrogen removal efficiency to 25 %. For kinetic study, the result showed that the experimental data of ammoniacal nitrogen (AN) removal at every stage fitted well to the first-order kinetics equation with high R2 values. The rate constant of AN removal, kAN, decreased with increasing influent concentration of 2,4-DCP, from 0.053 to 0.0006/min when 2,4-DCP concentration increased from 0 to 30 mg/L, respectively. However, the observed gradual recovering of AN removal with respect to the removal efficiency and kinetics during the recovery stage indicated that the inhibitory effect of 2,4-DCP on the nitrification process was reversible.
Keywords:Inhibitory Effect;2,4-Dichlorophenol;Nitrogen Removal;Sequencing Batch Reactor;Nitrification
- Geradi MH, Nitrification and denitrification in the activated sludge process, John Wiley, New York (2002)
- Louzeiro NR, Mavinic DS, Oldham WK, Meisen A, Water Res., 36, 2721 (2002)
- Park JA, Hur JM, Son BS, Lee JH, Korean J. Chem. Eng., 18(4), 486 (2001)
- Umble AK, Ketchum LH, Water Sci. Technol., 35, 177 (1997)
- Cho MH, Lee J, Kim JH, Lim HC, Korean J. Chem. Eng., 27(3), 925 (2010)
- Kim DS, Jung NS, Park YS, Korean J. Chem. Eng., 25(4), 793 (2008)
- Irvine RL, Ketchum LH, CRC Crit. Rev. Environ. Contr., 18, 255 (1989)
- Arora ML, Barth EF, Umphres MB, J. Water Pollut. Contr.Fed., 57, 867 (1985)
- Grady CPL, Daigger GT, Lim HC, Biological wastewater treatment, 2nd Ed., Marcel Dekker, New York (1999)
- Hu Z, Chandran K, Grasso D, Smets BF, Water Res., 38, 3949 (2004)
- Kiff RJ, J. Wat. Pollut. Contr., 71, 475 (1972)
- Kargi F, Uygur A, Bioresour. Technol., 89(1), 89 (2003)
- Tchobanoglous G, Burton FL, Wastewater engineering: Treatment, disposal and reuse, 3rd Ed., Metcalf and Eddy, New York (1991)
- Amor L, Eiroa M, Kennes C, Veiga MC, Water Res., 39, 2915 (2005)
- Kargi F, Uygur A, Baskaya HS, Bioresour. Technol., 96(15), 1696 (2005)
- Goh CP, Seng CE, Ahmad Sujari AN, Lim PE, Environ.Technol., 30, 725 (2009)
- Uygur A, Kargi F, Process Biochem., 39, 2123 (2004)
- Nalbur BE, Alkan U, Int. Biodeterior. Biodegrad., 60, 178 (2007)
- Lee HC, In JH, Kim JH, Hwang KY, Lee CH, Korean J. Chem. Eng., 22(6), 882 (2005)
- Sahinkaya E, Dilek FB, Appl. Microbiol. Biotechnol., 59(2-3), 361 (2002)
- Kargi F, Eker S, Uygur A, J. Environ. Manage., 76, 191 (2005)
- Eker S, Kargi F, Enzyme Microb. Technol., 38(6), 860 (2006)
- Zhao Z, Jiang G, Jiang S, Ding F, Korean J. Chem. Eng., 26(6), 1662 (2009)
- Lim JW, Seng CE, Lim PE, Ng SL, Ahmad Sujari AN, Bioresour. Technol., 102, 9876 (2011)
- Lee ES, Park JY, Yeom SH, Yoo YJ, Korean J. Chem. Eng., 25(1), 139 (2008)
- Yeom SH, Kim SH, Yoo YJ, In SY, Korean J. Chem. Eng., 14(1), 37 (1997)
- Lim SJ, Kim EY, Ahn YH, Chang HN, Korean J. Chem. Eng., 25(1), 129 (2008)
- APHA, Standard methods for the examination of water and wastewater, 20th Ed., America Public Health Association, Washington,DC (1998)
- Chen GW, Yu HQ, Liu HX, Xu DQ, Process Biochem., 41, 1758 (2006)
- Sheng GP, Yu HQ, Yue ZB, Appl. Microbiol. Biotechnol., 69(2), 216 (2005)
- Jiang HL, Tay JH, Maszenan AM, Tay STL, Appl. Environ. Microbiol., 70, 6767 (2004)
- Ren S, Frymier PD, Adv. Environ. Res., 7, 537 (2003)
- Liu Y, Chen GH, Biotechnol. Bioeng., 55(3), 571 (1997)
- Russell JB, Cook GM, Microbiol. Rev., 59, 48 (1995)
- Ni BJ, Xie WM, Liu SG, Yu HQ, Wang YZ, Wang G, Dai XL, Water Res., 43, 751 (2009)
- Li AJ, Yang SF, Li XY, Gu JD, Water Res., 42, 3552 (2008)
- Sahinkaya E, Dilek FB, J. Environ. Manage., 83, 427 (2007)
- Holman JB, Wareham DG, Biochem. Eng. J., 22, 125 (2005)
- Yang L, Alleman JE, Water Sci. Technol., 26, 997 (1992)