The Research Of Jet Pump For Sewage Treatment Plant Dosing

The jet pump is fluid machinery, what use jet turbulent diffusion to achieve the purpose ofthe transfer of energy and mass. Because of it has much advantages, such as working, reliable,easy installation and maintenance, good sealing，，and make for transporting toxic，explosive，flammable and radioactive medium. It has been widely used in water conservancy, electricpower, transportation, metallurgy, petroleum, chemical industry, environmental protection,marine development and use of nuclear energy, aviation and aerospace sector.In this paper, based on Research and application status of jet pump at home and abroad.Simulate the jet pump using for sewage treatment with the commercial FLUENT software,master the internal flow field of the jet pump based on the simulation of the different parametersof the jet pump, draw the formula of the length of the hose and the nozzle-to-throat learances.Combined with the actual situation of the sewage biochemical treatment, Design the optimizestructure geometry parameters of the jet pump according to process requirements.First, use UG NX5.0software to model three-dimensional graph of the internal flow fieldof jet pumpf; second, use GAMBIT software what is FLUENT pre-processing tool to mesh it;third, numerical simulation and performance prediction plus Medicinal jet pump for sewagetreatment, the use of the FLUENT flow analysis software for optimization and evaluation of thestructural parameters of the jet pump efficiency and the rational design of the structuralparameters of the jet pump designjet pump for sewage treatment; last, combined with the actualsituation of the sewage biochemical treatment, make the system solutions (or technologyprogram, automatic control program) for sewage treatment with jet pump dosing.