Introducing the main design content and detailed points of the first stage project which can remove phosphor and nitrogen in Loudi the first wastewater treatment plant, analyzes some problems in wastewater plant which will appear during testing bacterium cultivating and trial-operation course, and adopts a series of measures.In the influent water quality is far below the design value of the adverse conditions, by taking reasonable bacterium cultivating problem, only less than a month time for the system to start successfully.The data indicates that operation and water quality of efflu-ent is s...