Evolution of clostridia and streptomycetes in full-scale composting facilities and pilot drums equipped with on-line temperature monitoring and aeration

► Clostridia and streptomycetes in composting facilities with temperature monitoring. ► Streptomycetes gene levels increased and then declined, while SRC decreased. ► Clostridium perfringens detected in a facility, not appropriate indicator for disinfection. ► Control aeration, compost mass and bulking agent quality, time, microbial succession. ► Protect workers during process and confirm end product quality, which can be safe.