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Biological Treatment of Saline Wastewater by Fed‐Batch Operation
Author(s) -
Kargi Fikret,
Dincer Ali R.
Publication year - 1997
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199706)69:2<167::aid-jctb696>3.0.co;2-c
Subject(s) - wastewater , activated sludge , salt (chemistry) , saline , sewage treatment , chemical oxygen demand , chemistry , pulp and paper industry , biochemical oxygen demand , urea , chromatography , environmental engineering , environmental science , biology , biochemistry , organic chemistry , engineering , endocrinology
The adverse effects of salt on biological treatment of saline wastewater inoculated by activated sludge culture were investigated. A synthetic wastewater composed of diluted molasses, urea, KH 2 PO 4 and various concentrations of salt (1–5% w/v NaCl) was treated in an aerobic‐biological reactor operating in fed‐batch mode. An activated sludge culture obtained from a wastewater treatment plant was used as the seed. Variations of chemical oxygen demand (COD) removal rate and efficiency with salt concentration were determined. A rate expression including salt inhibition effect was proposed and kinetic constants were determined by using the experimental data. © 1997 SCI.