Journal
CHEMICAL ENGINEERING JOURNAL
Volume 258, Issue -, Pages 450-459Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2014.07.106
Keywords
COD fractions; Oxygen uptake rate; Physical-chemical analysis; Biodegradability
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Funding
- National Natural Science Foundation of China [51208450]
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A simple physical-chemical method was developed as an alternative to the respirometry method for determining the wastewater COD fractions in terms of biodegradability. Wastewater was fractionated into soluble, colloidal, non-settleable and settleable particle components by the physical-chemical method. The COD biodegradability fractions including readily biodegradable COD, slowly biodegradable COD, inert soluble COD and inert particulate COD were determined from the respirometry and modeling method. A conversion matrix was derived that can be used for COD biodegradability fractions conversion from simple physical-chemical analysis. The denitrification experiment indicated that the physical-chemical conversion method can be a valuable tool for wastewater denitrification potential estimation. (C) 2014 Elsevier B.V. All rights reserved.
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