Combined heat and power generation system for sewage treatment plant in alpine region

The invention discloses a combined heat and power generation system for a sewage treatment plant in an alpine region, and belongs to the technical field of combined heat and power generation. Comprising a sewage treatment plant, a primary sewage intercepting device, a sewage lifting pump set, a first sewage source heat pump unit, a second sewage source heat pump unit, a pipeline impact type water-turbine generator set, a user side circulating water pump set, a tap water supplementing device, user side water supply and return, a first gate valve, a second gate valve, a third gate valve, a fourth gate valve and a fifth gate valve. The system is mainly used for an outlet of an original sewage drainage trunk line of a sewage treatment plant, a bypass drainage pipeline of a combined heat and power generation system device is added, sewage of the sewage treatment plant is utilized, rich heat resources in the sewage serve as cold and heat sources through a sewage source heat pump, energy is converted into a heating