Laboratory-scale experiments were undertaken to determine appropriate design criteria for full-scale SBR process for the treatment of the veneer industry wastewater. Basic process challenges included highly variable (quality and quantity) influent with high temperature and colloids (black color). The full-scale treatment plant was able to be constructed and built in short time period. Using flexible and adaptable SBR configuration of anoxic and aerobic phases with high concentration of biomass enabled successful biological treatment of the veneer wastewater throughout the production time.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 3872282The influence of solid retention time (SRT) on the denitrification/nitrification kinetics in the SBR was evaluated. Three series of experiments were conducted in two pilot SBR systems. SBR1 was operated with the SRT of 20 days (MLSS 3 g/L) and SBR2 was operated with the SRT of 52 days (MLSS 11.6 g/L) and the SRT of 31 days (MLSS 11.6 g/L). Activated sludge flocs with excellent settling properties were developed (SVI 27–33 mg/L). Denitrification and nitrification rate and carbon elimination rate were much higher in the SBR systems with higher sludge concentration than in the SBR1 system.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 3981082