Multi-level wastewater reclamation and hot water supply system

The invention discloses a multi-level wastewater reclamation and hot water supply system. The system comprises a sewage pool and a sewage pipe connected with the sewage pool. The sewage pipe is internally provided with multiple levels of heat exchangers used for heat exchange. The multi-level wastewater reclamation and hot water supply system is characterized in that the system further comprises a cold water pipeline; after the cold water pipeline achieves water temperature exchange through the multiple levels of heat exchangers, one end of the cold water pipeline is connected with the top of a heat preservation water tank, and the bottom of the heat preservation water tank is connected with the other end of the cold water pipeline; and the heat preservation water tank is connected with a heat supply heat pump, and the heat supply heat pump is provided with a heating device. 本发明公开了种多级废水回收热水供应系统，包括污水池以及与污水池连接的污水管，所述污水管中设有用于热交换的多级热交换器，其特征在于：还包括冷水管道，所述冷水管道通过多级热交换器进行水温交换后，端与保温水箱顶部连接，保温水箱底部与冷水管道另端连接；所述保温水箱与供热热泵连接，