Study On Self-sucking Rotational-flow Micro-bubble Generator

With the rapidly development of industry and the increasing of population in modern world,which has caused seriously damage to the water environment,especially on the fresh water which is necessary for human beings has lose its balance between the demand and supply.Because of the lack of fresh water,how to translate polluted water into domestic water has become the biggest challenge on water treatment field.As an efficient and newest water purification method,flotation plays an more and more important role in sewage treatment.Micro-bubble generator is the key point to the flotation which need be pay much attention to it.This paper has made a brief introduction about the flotation’s foreign and domestic history of research and some industrialization use cases.Introduced several newly micro-bubble generators’ working principle in detail.And then,put forward the design ideals about the self-sucking rotational-flow micro-bubble generator.This paper firstly describes the working principle of self-sucking rotational-flow micro-bubble generator.Based on the theory proposed groups of structure parameters may affect the working performance of the micro bubble generator.Secondly simulating the inner stream by FLUENT software,changing the lumen diameter、inlet diameter and outlet diameter respectively based on monofactor principle,comparing the result and selecting the best parameters.Lastly performing a clear water experiment with the fabricated micro-bubble generator and checking its working performance.This research is supported by National Natural Science Foundation of China.The study of this micro-bubble generator is beneficial for the practical application.