Coverage: 9 towns in Changping District, Beijing (service area: 173 square kilometers, serving about 220,000 population).

Core technologies: Precision aeration system, multi-stage AO pro- cess, MBR. sewage source heat pump technology.

Key contributions: Undertaken medical wastewater treatment of Xiaotangshan Hospital during the 2021 epidemic.

Total Treatment Capacity 126,200 m³/d.

Businees Model: BOT