Performance evaluation and kinetic modeling of the start-up of a UASB reactor treating municipal wastewater at low temperature

Bioprocess and Biosystems Engineering
F Ilter Turkdogan-AydinolHurrem Bayhan

Abstract

A kinetic modeling-based study was carried out to evaluate the start-up performance of a 10-L up-flow anaerobic sludge blanket (UASB) reactor treating municipal wastewater under different organic and hydraulic loading conditions. The reactor was operated for 105 days (around 4 months) below 20 °C and with three different hydraulic retention times of 24, 12 and 5 h. Imposed volumetric organic loading rates (OLR) ranged from 0.57 (±0.05) to 11.78 (±0.85) kg TCOD/m(3)-day. Although relatively high incoming volumetric OLR values were employed to the system, the UASB reactor demonstrated a favorable performance on the anaerobic treatability of municipal wastewater, and no process failure was recorded in the start-up stage. On the basis of experimental results, the modified Stover-Kincannon model was successfully applied to define the start-up kinetics with a very high value of the correlation coefficient (R = 0.9729). Maximum substrate utilization rate constant and saturation constant of the modified Stover-Kincannon model were determined as U (max) = 1.996 g/L-day and K (B) = 1.536 g/L-day, respectively.

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Citations

Sep 29, 2015·Journal of Environmental Health Science & Engineering·Amirreza TalaiekhozaniMasoud Beheshti
Apr 8, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Mostafa M El-SeddikHisham S Abdel-Halim
Aug 15, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·M Esparza-SotoC Fall
Feb 8, 2020·Journal of Environmental Health Science & Engineering·Moein Besharati FardJavad Alavi
Mar 29, 2021·Environmental Pollution·Naassom Wagner Sales MoraisAndré Bezerra Dos Santos

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