Urban flowing water projects are an effective approach to promote the hydrodynamic force, enhance the self-purification capacity of water bodies and improve the water environment. Urban inland rivers, dead-end rivers and artificial landscape rivers are often closed or semi-closed water bodies, which cannot be circulated through natural water flow. Additionally, there is often insufficient external water sources available for diversion in urban areas, or the cost of water diversion is prohibitively high. In such cases, internal water circulation using bidirectional pumps to forcibly drive water flow is a more economical and feasible solution. Taking the Liyang City Moat Flowing Water Project as an example, the schemes of bidirectional submersible tubular pumps and submersible axial flow pumps with bidirectional flow channels are compared and analyzed. Ultimately, the co-construction scheme of bidirectional submersible tubular pumps and fixed weirs is selected to achieve the bidirectional water flow control and regulation of the moat. After project implementation, the flowing water effect is remarkable, which significantly improves the water quality along the moat, and can be referred for similar water conservancy projects.