Application case of sewage source heat pump system based on direct water intake from trunk sewer and the head end filtration unit

In view of special geographical position of the trunk sewer and construction limitation of an urban untreated sewage source heat pump system, researches water intake modes of the sewage system. Presents in detail the process, direct water intake mode, sewage pump selection and head end filtration unit design of the sewage source heat pump system. In the light of the actual operation problems, improves the anti-clogging method and proposes an antifouling idea of coarse filtering inside the trunk sewer, providing a reference to the untreated sewage source heat pump project.