Event Title
ENV-651: HIGHLY EFFECTIVE ELECTRO-FENTON OXIDATION TREATMENT FOR CONCENTRATED BREWERY WASTEWATER
Location
London
Event Website
http://www.csce2016.ca/
Description
The brewing industry typically produces 3-10 liters of wastewater per liter of beer produced which contains sugars, soluble starch, ethanol, and volatile fatty acids (VFAs) and is typically characterized by 2,000-20,000 mg/L COD, 200-3,000 mg/L total suspended solids (TSS), and 10-124 mg/L phosphorus. In this study, the high strength brewery wastewater was treated with a multi-plated (BDD/Graphite) electrolysis cell configuration with Fenton’s reagent in a galvanostatic mode of operation. A novel cell configuration with five electrode plates (BDD/Graphite), which provide a higher current/voltage ratio than the conventional three plate configuration, was used in this study to provide more surface for anodic ·OH production, as well as electrical regeneration of Fe2+ at the cathode. The test was performed with cathodically generated in-situ H2O2 and externally added H2O2 to determine the optimal dose for the overall process. The ·OH formed by Fenton’s reaction, as well as anodic oxidation, degraded the organic matter present in the wastewater. This hybrid treatment method enables the brewery to meet the requirements of the wastewater discharged into the municipal system at a shorter time with higher treatment efficiency than the conventional treatment processes. All the experiments in this study were performed in a controlled environment which showed removal efficiency of as much as 90.5% of COD at an H2O2 dose of 0.1 mM with a Fe2+/ H2O2 ratio (w/w) of 17. Fe2+/ H2O2 ratios higher or lower than this value showed lower COD removal efficiency with higher energy consumption, which might be the effect of parasitic reactions of ·OH. The next step of the research will focus on optimization of the overall process including current intensity, Fe2+ concentration, and cell configuration, as well as the quantification of ·OH production.
Included in
ENV-651: HIGHLY EFFECTIVE ELECTRO-FENTON OXIDATION TREATMENT FOR CONCENTRATED BREWERY WASTEWATER
London
The brewing industry typically produces 3-10 liters of wastewater per liter of beer produced which contains sugars, soluble starch, ethanol, and volatile fatty acids (VFAs) and is typically characterized by 2,000-20,000 mg/L COD, 200-3,000 mg/L total suspended solids (TSS), and 10-124 mg/L phosphorus. In this study, the high strength brewery wastewater was treated with a multi-plated (BDD/Graphite) electrolysis cell configuration with Fenton’s reagent in a galvanostatic mode of operation. A novel cell configuration with five electrode plates (BDD/Graphite), which provide a higher current/voltage ratio than the conventional three plate configuration, was used in this study to provide more surface for anodic ·OH production, as well as electrical regeneration of Fe2+ at the cathode. The test was performed with cathodically generated in-situ H2O2 and externally added H2O2 to determine the optimal dose for the overall process. The ·OH formed by Fenton’s reaction, as well as anodic oxidation, degraded the organic matter present in the wastewater. This hybrid treatment method enables the brewery to meet the requirements of the wastewater discharged into the municipal system at a shorter time with higher treatment efficiency than the conventional treatment processes. All the experiments in this study were performed in a controlled environment which showed removal efficiency of as much as 90.5% of COD at an H2O2 dose of 0.1 mM with a Fe2+/ H2O2 ratio (w/w) of 17. Fe2+/ H2O2 ratios higher or lower than this value showed lower COD removal efficiency with higher energy consumption, which might be the effect of parasitic reactions of ·OH. The next step of the research will focus on optimization of the overall process including current intensity, Fe2+ concentration, and cell configuration, as well as the quantification of ·OH production.
https://ir.lib.uwo.ca/csce2016/London/Environmental/30
