2015 CSCE Annual Conference Regina - Building on our Growth Opportunities Conference
Dr. Catherine Mulligan, Concordia University
Dr. Laleh Yerushalmi, Concordia University
The atmospheric concentration of carbon dioxide which constitutes the major greenhouse gas (GHG) has increased significantly after the industrial revolution. Many attempts have been made aiming at the reduction of CO2 in the atmosphere. In the present study, a hybrid treatment process is developed for CO2 removal from wastewaters generated by industrial operations. In the developed process, a CO2-saturated wastewater enters an anaerobic reactor where CO2 is bioconverted to methane, followed by an aerobic reactor for additional treatment of the wastewater. This study evaluates the economic feasibility of the developed hybrid treatment process to treat CTMP wastewater from the pulp and paper industry, making a comparison of this process with the aerobic and conventional hybrid (anaerobic/aerobic) treatment systems. The GoldSetTM software is applied to compare various treatment methods based on their corresponding economical, environmental and social aspects. The anaerobic and aerobic treatment systems in the present case study use IC (internal circulating) and activated sludge processes, respectively. The results show the advantages of the developed hybrid treatment process compared to the conventional hybrid and aerobic treatment methods.