Empirical model representing microbial activity in a submerged MBR treating strength wastewater

Biomass viability: An experimental study and the development of an empirical mathematical model for submerged membrane bioreactor

“…MLSS) which would obviously affect the concentration of SMP/bEPS. The currently available models (Hasar and Kinaci, 2004) including the conceptual model (Zuthi et al, 2013) proposed previously by the authors, however, can be used to explain rather qualitatively that the SMP or bEPS are correlated with the biomass viability based on the trace of soluble or colloidal components (soluble or colloidal COD) in the effluent stream.…”

“…Similarly, the MLVSS also does not have significant correlation to SOUR since only a small percentage of the organisms in the activated sludge are viable while the dead mass contained in the MLVSS does not contribute to the biological treatment. The state-of-the-art mathematical models of biomass viability (Hasar and Kinaci, 2004) include the parameter MLVSS/MLSS, instead of the MLVSS or MLSS (Hasar et al, 2002). The normalized parameter of MLVSS to MLSS may be an indicator of microbial viability since this largely represents the viability of active biomass for biological treatment.…”

“…As biodegradation potential of microbial culture and filtration performance play critical roles for the sustainable operation of MBR (Bas ßaran et al, 2014), assessment of biomass viability is always a concern for better management and operational control of MBR. To date, only Hasar et al (2002), Hasar and Kinaci (2004) have attempted to characterize the biomass viability of the MBR system. Hasar and Kinaci (2004) presented an empirical model of the biomass viability of a submerged MBR (SMBR) taking into account the mixed liquor suspended solids (MLSS), mixed liquor volatile suspended solids (MLVSS), and inert COD in the influent and effluent.…”

“…To date, only Hasar et al (2002), Hasar and Kinaci (2004) have attempted to characterize the biomass viability of the MBR system. Hasar and Kinaci (2004) presented an empirical model of the biomass viability of a submerged MBR (SMBR) taking into account the mixed liquor suspended solids (MLSS), mixed liquor volatile suspended solids (MLVSS), and inert COD in the influent and effluent. The change of inert COD in the effluent was ascribed to the inert compounds that were produced due to microbial activity within the bioreactor.…”

Performance of the combined SMBR–IVCW system for wastewater treatment

“…The MLSS was online measured by the Total Suspended Solids Interface Level Analyzer (ROYCE 711). The oxygen uptake rate (OUR) and the specific OUR (SOUR) were measured according to the method [14]. The difference among the removal efficiencies of the SMBR-IVCW in different HRT was assessed using One-way ANOVA.…”