Large-Scale Pig Farm Manure Treatment Project – 24/7 Operation, Daily Output Turns into "Black Gold" A large-scale pig farm in Henan Province, with 10,000 pigs, was once deeply troubled by manure treatment difficulties: traditional composting occupied over 20 acres of land, had a fermentation cycle of up to 3 months, resulted in overflowing sewage and foul odors during the rainy season, and led to numerous environmental complaints. After introducing the Bolong 280m³ high-temperature aerobic ferm