Abstract
In this study, a low-cost, efficient, and environmentally friendly anaerobic sludge process for the treatment of industrial beverage wastewater was investigated to analyze the effect of bacteria growth on the degradation of organic matter (chemical oxygen demand). Additionally, the mechanism, interactions between the microbe’s growth, and operating conditions of an anaerobic batch reactor along with the wastewater treatment efficiency were evaluated via microbial kinetics. The kinetic coefficients based on chemical oxygen demand (COD) by conventional techniques such as kinetic coefficients growth yield (0.46 mg VSS/mg COD), saturation coefficient (3500 mg/L COD), the maximum rate of substrate utilization per unit mass of biomass (0.0066 mg/L COD), growth rate by Monod equation, M (0.03833 L/h), and maximum growth rate, μm (0.03672 L/h) were calculated. The results show a higher rate of substrate degradation (0.54 day−1) due to the high COD removal efficiency (CRE) of 99.31% during 13 days that was achieved, which can be attributed to the active involvement of anaerobic microbes in the process of degradation. Based on these results, it can be concluded that the current study can be used as an effective way to analyze the industrial beverage wastewater at commercial levels.
Highlights
Accessibility of freshwater resources is one of the serious and life-threatening issues facing our current society
This study demonstrated that the reactor was efficient in treating industrial beverage wastewater at a pilot-scale level
To evaluate the kinetic parameters of beverage wastewater (Table 6), firstly, the substrate constant was calculated by plotting chemical oxygen demand (COD) removal against time, and a slope of COD removal/time was obtained, as shown in Figure S5, from which Ks was estimated as 3500 mg/L
Summary
Accessibility of freshwater resources is one of the serious and life-threatening issues facing our current society. Anaerobic sludge is considered one of the most suitable techniques to treat wastewater due to its better economic performance and the elimination of secondary pollution problems [11] In this technique, organic solids or soluble organics presenting in wastewater are typically converted into gaseous end products through the process of degradation [12]. This study demonstrated that the reactor was efficient in treating industrial beverage wastewater at a pilot-scale level It was designed for 10 L of high-strength septic effluent consisting of a reactor with a height of 50 cm and a diameter of 15 cm. It was designed for 10 L of high-strength 3seopf 1t6ic effluent consisting of a reactor with a height of 50 cm and a diameter of 15 cm.
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