Effect of clinoptilolite addition and solids retention time on the extracellular polymeric substances composition and soluble chemical oxygen demands in activated sludge

Chang Gyun Kim; Changbok Lee; Tai-il Yoon

Korean Journal of Chemical Engineering, Vol.23, No.5, 767-772, September, 2006

Chang Gyun Kim^†, Changbok Lee, and Tai-il Yoon

Department of Environmental & Civil Engineering, Inha University, 253 Young Hyun dong, Namgu, Incheon 402-751, Korea

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This study was carried out to compare EPS (Extracellular Polymeric Substances) composition between conventional activated sludge (AS) and activated sludge dosed with clinoptilolite (CAS). Additionally, those were compared with organic removal efficiency in the effluent in conjunction with EPS concentrations. The experiments were conducted at SRT (Solids Retention Time) ranging from 5 to 100 d. For the CAS, proteins were more readily observed for SRT 20 and 100 d compared to that of the AS. Polysaccharide concentration in the sludge was greatly increased for the CAS, but it was significantly diminished when the SRT was extended. The level of EPS concentration observed from the effluent had the same pattern of variation for the two different types of systems. Regardless of type of reactor, the ratio of proteins for sludge versus effluent was independent of SRT, but the ratio of polysaccharides diminished as SRT increased. In the long run, the degree of protein synthesis directly ascribed to concurrent enhancement of SCOD removal efficiency was slightly more in the CAS. It was decided that clinoptilolite added system could be more reliably retrofitted to a conventional activated sludge process.

Keywords:Nutrient Removal;EPS;Activated Sludge;Clinoptilolite

[References]

Andreadakis AD, Water Res., 27, 1707 (1993)
Boreo VJ, Bowers AR, Eckenfelder WW, Water Sci. Technol., 34, 241 (1996)
Boyd A, Chakrabarty AM, Appl. Environ. Microbiol., 60, 2355 (1994)
Chudoba P, Pannier M, Environ. Technol., 15, 863 (1994)
Dubois M, Gilles KA, Hamilton JK, Rebers PA, Smith F, Anal. Chem., 28, 350 (1956)
Dudman WF, The role of surface polysaccharides in natural environments, Surface Carbohydrates of the Prokaryotic Cell, Shutherland, I.W., eds., Academic Press, London (1977)
Goodwin JAS, Forster CF, Water Res., 19, 527 (1985)
Hariss RH, Mitchell R, Water Res., 9, 993 (1972)
Hartee EF, Anal. Biochem., 48, 422 (1972)
Jahn A, Nielsen PH, Water Sci. Technol., 37, 17 (1988)
Kasapgil IO, Saillis PJ, Anderson GK, Water Res., 34, 3943 (2000)
Kim CG, Lee HS, Yoon TI, Environ. Eng. Res., 8, 49 (2003)
Lee DH, Kim SJ, Moon H, Korean J. Chem. Eng., 16(4), 525 (1999)
Lee HS, Park SJ, Yoon TI, Bioresour. Technol., 83(3), 263 (2002)
Park SJ, Lee HS, Yoon TI, Bioresour. Technol., 82(2), 183 (2002)
Park JH, Lee YO, Park JK, Korean J. Chem. Eng., 20(5), 878 (2003)
Park SJ, Kim CG, Yoon TI, Kim DW, Korean J. Chem. Eng., 20(3), 492 (2003)
Pirog TP, Grinberg TA, Malashenko Y, Yu R, Mikrobiologiya, 33, 550 (1997)
Roberson EB, Firestone MK, Appl. Environ. Microbiol., 58, 1284 (1992)
Sponza DT, Process Biochem., 37, 983 (2002)
Urbain V, Block JC, Manem J, Water Res., 27, 829 (1993)
Yoon TI, Lee HS, Kim CG, J. Membr. Sci., 242(1-2), 5 (2004)
Zhang X, Bishop PL, Kinkle BK, Water Sci. Technol., 39, 211 (1999)
Zhang X, Bishop PL, Chemosphere, 50, 63 (2003)

[Referenced By]

[1] Andreadakis AD, Water Res., 27, 1707 (1993)

[2] Boreo VJ, Bowers AR, Eckenfelder WW, Water Sci. Technol., 34, 241 (1996)

[3] Boyd A, Chakrabarty AM, Appl. Environ. Microbiol., 60, 2355 (1994)

[4] Chudoba P, Pannier M, Environ. Technol., 15, 863 (1994)

[5] Dubois M, Gilles KA, Hamilton JK, Rebers PA, Smith F, Anal. Chem., 28, 350 (1956)

[6] Dudman WF, The role of surface polysaccharides in natural environments, Surface Carbohydrates of the Prokaryotic Cell, Shutherland, I.W., eds., Academic Press, London (1977)

[7] Goodwin JAS, Forster CF, Water Res., 19, 527 (1985)

[8] Hariss RH, Mitchell R, Water Res., 9, 993 (1972)

[9] Hartee EF, Anal. Biochem., 48, 422 (1972)

[10] Jahn A, Nielsen PH, Water Sci. Technol., 37, 17 (1988)

[11] Kasapgil IO, Saillis PJ, Anderson GK, Water Res., 34, 3943 (2000)

[12] Kim CG, Lee HS, Yoon TI, Environ. Eng. Res., 8, 49 (2003)

[13] Lee DH, Kim SJ, Moon H, Korean J. Chem. Eng., 16(4), 525 (1999)

[14] Lee HS, Park SJ, Yoon TI, Bioresour. Technol., 83(3), 263 (2002)

[15] Park SJ, Lee HS, Yoon TI, Bioresour. Technol., 82(2), 183 (2002)

[16] Park JH, Lee YO, Park JK, Korean J. Chem. Eng., 20(5), 878 (2003)

[17] Park SJ, Kim CG, Yoon TI, Kim DW, Korean J. Chem. Eng., 20(3), 492 (2003)

[18] Pirog TP, Grinberg TA, Malashenko Y, Yu R, Mikrobiologiya, 33, 550 (1997)

[19] Roberson EB, Firestone MK, Appl. Environ. Microbiol., 58, 1284 (1992)

[20] Sponza DT, Process Biochem., 37, 983 (2002)

[21] Urbain V, Block JC, Manem J, Water Res., 27, 829 (1993)

[22] Yoon TI, Lee HS, Kim CG, J. Membr. Sci., 242(1-2), 5 (2004)

[23] Zhang X, Bishop PL, Kinkle BK, Water Sci. Technol., 39, 211 (1999)

[24] Zhang X, Bishop PL, Chemosphere, 50, 63 (2003)