Affiliation:
1. Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
Abstract
Abstract
A laboratory-scale anaerobic moving bed biofilm reactor (AnMBBR) was installed and operated at various hydraulic retention times (HRTs) of 20 to 1.5 d with surface area loading rate (SALR) of 0.86 to 11.43 gCOD/m2/d. Synthetic starch containing desizing wastewater with chemical oxygen demand (COD) of 12.75 g/L was prepared and fed into the reactor. Monod, modified Stover-Kincannon, Grau second-order and First-order substrate removal models were used to evaluate the results of AnMBBR. COD removal efficiency of bioreactor was dwindled by increasing the SALR or reducing the HRT. Decay coefficient (Kd) and yield coefficient (Y) for the Monod model were 0.027 1/d and 1.01 mgVSS/mgCOD, respectively. Maximum substrate utilization rate (Umax) and kinetic constant (Kb) for the Modified Stover-Kincannon model were estimated as 12.57 and 15.22 g/L/d, respectively. The constants (a and b) for the Grau second-order model were found to be 1.09 and 1.31 whilst kinetic coefficient for the Second-order model and First-order substrate removal model were 1.62 and 1.55 1/d, respectively. Modified Stover-Kincannon model and Grau second-order model were found to be the best fit for experimental data with R2 value of 0.99. The findings suggest that these models can be applied to predict the behaviour of AnMBBRs on various scales.
Subject
Water Science and Technology
Reference20 articles.
1. Study of moving bed biofilm reactor in diethyl phthalate and diallyl phthalate removal from synthetic wastewater
2. Kinetic analyses of the operation of mesophilic and thermophilic anaerobic filters treating a simulated starch wastewater
3. Baumann C., Shahzad H. M. A., Minke R. 2018 Anaerobic Pretreatment of Desizing Liquor-Experience From Germany and Pakistan. In: Colloquium on Textile Wastewater Management, Integrated Best Available Wastewater Management in the Textile Industry, 19 September, Essen. Vulkan-Verlag GmbH (Stuttgarter Berichte zur Siedlungswasserwirtschaft, pp.101–119.
4. Estimation of bio-kinetic coefficients for treatment of brewery wastewater;Enitan;International Journal of Environmental and Ecological Engineering,2014
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