Biogas in WWTP: maximisation with OFMSW co-digestion
Biogas in WWTPs is the most underused operational opportunity in the Spanish water sector. Most plants with anaerobic digestion digest only primary and secondary sludge, when they could produce considerably more biogas by co-digesting with the organic fraction of municipal solid waste (OFMSW). Well-managed co-digestion raises biogas production with a small increase in the dewatered […]