Design Of The Multi-functional Test Facility For Investigation Of A New Screw Aeration Pump Used In Wastewater Treatment

At present, the combination of aeration blowers and aeration systems, which used for the biological treatment process of sewage treatment process, are the main way for the oxygen of activated sludge sewage. However, the traditional aeration system has low efficiency but high energy consumption. Therefore, the research and development of this new kind of highly efficient, energy-efficient sewage aeration technology has becaming the subject of the sewage treatment industry.For many problems of conventional aeration method, researchers based on the labyrinth screw pump and screw sealing mechanism, developed on the sewage aeration performance of labyrinth screw pump a preliminary exploration and dedicated to the sewageaeration labyrinth screw pump-the design concept of the spiral aeration pump for the first time. However, for the spiral aeration pump gas-liquid multiphase transport mechanism, the main parameters of the bubbles floating rate, oxygen content, the mechanism are not mature enough to make this new kind of technology achieve industrial application. This is the fundamental purpose of the subject spiral aeration experiment device design and research. This subject is form of the theoretical analysis of the spiral aeration pump, structural design, experimental study and comprehensive analysis, provide a reference for future practical engineering design and application.1. Theoretical analysis:Based on the current spiral sealing technology and the current development of the labyrinth screw pump, according to read the related article on the basis of, trying to derive the theoretical formula spiral aeration pump and preliminary spiral aeration pump design;2. Structural design:With the knowledge about fluid mechanics, fluid machinery and other professional courses, design the overall structure of the diagram of the spiral aeration pump, replace core components-screw rotor and the screw stator structure diagram and setup spiral aeration experimental diagram.3. Experimental study:Design and build spiral aeration experiment, verify the design of aeration pump and the way of aeration process, keep on adjusting the pump through various features of the experiment.4. Analysis:Through comparise the aeration device performance parameters for different thread wire spiral, learn more about the line of each thread in the process of spiral aeration performance, working conditions, characteristics of theory and experiment, prepareing for the next stage of research.Through the research we can find that the spiral aeration during the experiment are just as same as the initial realization that the spiral aeration pump designed.And then we can do more spiral aeration experimental apparatus with the single pump or two-pump compared to operationexperimental requirements. That give us a good foundation for further development and research of the spiral aeration technology.