Non-steady state estimation of biodegradability of dyeing wastewater using respirometer

Chiil Kim; Eun Kyung Choe; In-Soung Chang

Korean Journal of Chemical Engineering, Vol.25, No.3, 553-557, May, 2008

DOI10.1007/s11814-008-0093-3 Export Citation

Non-steady state estimation of biodegradability of dyeing wastewater using respirometer

Chiil Kim, Eun Kyung Choe, and In-Soung Chang^{1, †}

Textile Ecology Laboratory, Korea Institute of Industrial Technology, Cheonan 330-825, Korea
¹Department of Environmental Engineering, Hoseo University, Asan 336-795, Korea

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Dyeing wastewater is notorious for its non-readily-biodegradability because it contains various kinds of refractory chemicals. To set up a strategy for controlling the dyeing wastewater discharged into conventional wastewater treatment plants, obtaining bio-kinetic information such as maximum specific growth rate (μmax) and half saturation constant (Ks) should first be done. To estimate the biodegradability of the dyeing wastewater, bio-kinetic constants of the artificially formulated dyeing wastewater containing 33 different dyes and auxiliaries were determined by using a respirometer. Activated sludge acclimated to the artificial dyeing wastewater was inoculated to the respirometer and the bio-kinetic constants were determined from oxygen uptake data. The μmax was found to 0.06 hr.1, which is 3 to 15 times smaller than that of the typical activated sludge for sewage treatment. The Ks was found to 210 mg/L, which was 3.5 to 21 times higher than that of the normal activated sludge.

Keywords:Auxiliaries;Biodegradability;Bio-kinetics;Dyeing Wastewater;Respirometer

[References]

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[1] Ciardelli G, Ranieri N, Water Res., 35, 567 (2001)

[2] Georgiou D, Hatiras J, Aivasidis A, Enzyme Microb. Technol., 37(6), 597 (2005)

[3] Kong Z, Vanrolleghem P, Willems P, Verstraete W, Water Res., 30, 825 (1996)

[4] Mohan PK, Nakhla G, Yanful EK, Water Res., 40, 533 (2006)

[5] APHA, AWWA, WEF, Standard methods for the examination of water and wastewater, American Water Works Association, Washington D.C., 19th Edition (1995)

[6] Standard methods for water quality determination in Korea, Dongwha publisher, Seoul (2005)

[7] Gaudy FRAF, Design and operation of activated sludge processes using respirometry, Lewis Publishers, Ann Arbor (1992)

[8] Tchobaonglous G, Schroeder ED, Water quality, Addison Wesley (1987)

[9] Eddy and Metcalf Inc. Wastewater engineering treatment and reuse, 4th Edition, McGraw-Hill (2003)

[10] Chang IS, Hur HW, Cho YJ, J. of Korean Society of Environmental Engineers, 21, 517 (1999)