A comparison study on the high-rate co-digestion of sewage sludge and food waste using a temperature-phased anaerobic sequencing batch reactor system

► TPASBR system can enhance renewable energy production while treating OFMSW. ► Thermophilic stage makes TPASBR system superior to MTSASBR system. ► Fast metabolism of thermophilic methanogen is the key to balance anaerobic pathways. ► TPASBR provides a synergy of sequencing-batch, co-digestion, and temperature-phasing. ► High-rate anaerobic co-digestion by a combination of three unique concepts.