Effect of particle number density on wastewater treatment performance of a fluidized-bed bioreactor
ENZYME AND MICROBIAL TECHNOLOGY, vol.19, no.2, pp.140-144, 1996 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 19 Issue: 2
- Publication Date: 1996
- Doi Number: 10.1016/0141-0229(95)00192-1
- Journal Name: ENZYME AND MICROBIAL TECHNOLOGY
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.140-144
- Keywords: fluidized bed bioreactor, particle number density, biological wastewater treatment, sponge-wire particles
- Dokuz Eylül University Affiliated: Yes
Abstract
A pilot-scale continuous-flow fluidized-bed bioreactor (FBBR) containing sponge particles surrounded by steel wires was operated with different particle number densities ranging from 55-440 particles l(-1) liquid. COD removal performance of the system was investigated. Synthetic wastewater used throughout the studies consisted of diluted molasses, urea, K2HPO4, and MgSO4 resulting in a ratio of COD/N/P = 100/10/1. Zooglea ramigera was used as the dominant microorganism in FBBR. COD and biomass concentration of both the immobilized and suspended growth phase were determined throughout the experiments. Increasing particle number densities resulted in higher rates of COD removal because of high biomass concentrations at high particle number densities.