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

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Abstract

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 (µ max ) and half saturation constant (K s ) 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 µ max 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 K s was found to 210 mg/L, which was 3.5 to 21 times higher than that of the normal activated sludge.

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Authors and Affiliations

  1. Textile Ecology Laboratory, Korea Institute of Industrial Technology, Cheonan, 330-825, Korea

    Chiil Kim, Eun Kyung Choe & In-Soung Chang

  2. Department of Environmental Engineering, Hoseo University, Asan, 336-795, Korea

    In-Soung Chang

Authors
  1. Chiil Kim
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  2. Eun Kyung Choe
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  3. In-Soung Chang
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Correspondence to In-Soung Chang.

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Kim, C., Choe, E.K. & Chang, IS. Non-steady state estimation of biodegradability of dyeing wastewater using respirometer. Korean J. Chem. Eng. 25, 553–557 (2008). https://doi.org/10.1007/s11814-008-0093-3

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  • DOI: https://doi.org/10.1007/s11814-008-0093-3

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