3.3. Energy balance analysis
Fig. 5 illustrates the energy balance analysis for the process combining HTPT and anaerobic digestion for treating the CPCAR. The analysis was based on the highest methane yield from the above laboratory tests at the optimized condition and also the theoretically calculated heat consumptions in all involved stages. The analysis was further verified with the actual heat consumption obtained in a pilot-scale HTPT test at 120 °C for 20 min. The capacity was supposed to be 100 t CPCAR for the analysis.