BATCH BIOLOGICAL TREATMENT OF SYNTHETIC WASTE-WATER IN A FLUIDIZED-BED CONTAINING WIRE MESH SPONGE PARTICLES

KARGI F., EYIISLEYEN S.

ENZYME AND MICROBIAL TECHNOLOGY, vol.17, no.2, pp.119-123, 1995 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 17 Issue: 2
  • Publication Date: 1995
  • Doi Number: 10.1016/0141-0229(94)00044-r
  • Journal Name: ENZYME AND MICROBIAL TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.119-123
  • Keywords: FLUIDIZED BED, BIOLOGICAL WASTE-WATER TREATMENT, BIOFILM REACTORS, DEGRADATION, PERFORMANCE, BIOREACTOR, BIOMASS, MODEL
  • Dokuz Eylül University Affiliated: No

Abstract

We investigated the kinetics of biological removal of COD and nitrogen from a synthetic wastewater in a fluidized bed operating in batch mode. Synthetic wastewater consisted of diluted molasses, urea, KH2PO4, and MgSO4 resulting in COD/N/P = 100/10/2. The fluidized bed contained sponge particles surrounded by stainless-steel wires as support particles for microorganisms. The system was operated with different initial COD and nitrogen concentrations, and COD-nitrogen consumption profiles were obtained. From the initial slopes of these curves, the initial rates of COD and nitrogen consumption and kinetic constants were determined. The system operated under a COD limitation with no dissolved oxygen limitations. The kinetic analysis for COD removal has shown a Monod type of kinetics with possible inhibition on the K-s, term. Nitrogen removal rate data indicated an inhibition for nitrogen concentrations above 1,200 mg l(-1).