The Yan'erwan Wastewater Treatment Plant BOT Project in Lanzhou, Gansu, invested, constructed, and operated by MCC Eco-Environmental’s Enfei Environmental, exemplifies a successful government-enterprise partnership. With a designed capacity of 300,000 tons per day, the plant utilizes integrated processes and vertical space development on its original site to establish diverse technological workflows. The MABR system is the largest of its kind in Asia, showcasing the company’s technological and innovative leadership. It stands as the company’s largest and most complex project, playing a pivotal role in driving high-quality development in the Yellow River Basin.