Sponge city rainwater recycling system

The invention relates to the field of water supply and drainage construction, in particular to a sponge city rainwater recycling system which comprises a drainage ditch and an underground water channel, the drainage ditch is arranged above the underground water channel, a drainage hole communicated with the underground water channel is formed in the inner bottom face of the drainage ditch, a supporting column is arranged in the underground water channel, and a rotating assembly is arranged on the supporting column. A purification assembly used for receiving rainwater and filtering the rainwater is arranged on the rotating assembly and extends to the position below the drainage hole. The rainwater purification device has the effects of reducing gravel and the like mixed in rainwater and relieving the purification pressure of the rainwater purification device. 本申请涉及给排水建设的领域，尤其是涉及一种海绵城市雨水回收循环系统，其包括排水沟和地下水道，排水沟设置在地下水道上方，排水沟内底面上开设有与地下水道连通的排水孔，地下水道内设有支撑柱，支撑柱上设有转动组件，转动组件上设有用于承接雨水并进行过滤的净化组件，净化组件延伸至排水孔下方。本申请具有减少雨水中夹杂的