Biological treatment of saline wastewater by fed-batch operation

Kargi F., Dincer A.

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, vol.69, no.2, pp.167-172, 1997 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 69 Issue: 2
  • Publication Date: 1997
  • Journal Name: JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.167-172
  • Keywords: saline wastewater, biological wastewater treatment, fed-batch operation, WATER
  • Dokuz Eylül University Affiliated: No

Abstract

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, KH2PO4 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.