An Evaluation of the Horizontal Injection Microbubble Generator

机译：水平注入微胶布发生器的评价

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The use of microbubbles has grown immensely in many fields such as the petrochemical industry and in wastewater treatment. This phenomenon offers a number of advantages that include the ability to provide larger liquidgas surface contact areas. In addition, in shallow aeration conditions horizontal injection is preferred in order to increase the contact surface area and aeration time, thereby increasing the mass transfer rate. In this study, the orifice type of microbubble generator was set on a rectangular transparent glass box to support visualization. A set of experiments were specifically conducted in order to reveal the effects of varying both the water and air flow rate on the bubble diameter distribution and volumetric mass transfer coefficient. The bubble diameter was measured using image processing method, and the volumetric mass transfer coefficient was measured using the dynamic method. The results showed that increases to the flow rate of water produced smaller bubble diameters, and a more homogeneous bubble diameter distribution. Furthermore, it was apparent that the water flow rate had a more significant effect on changes to volumetric mass transfer coefficient, compared to the air flow rate.

机译：使用微泡的使用在许多领域中造成了非常广泛的领域，例如石化工业和废水处理。这种现象提供了许多优点，包括提供更大的液体液面接触区域的能力。另外，在浅曝气条件下，优选水平注入，以增加接触表面区域和曝气时间，从而增加了传质速率。在本研究中，在矩形透明玻璃盒上设定了微胶布发生器的孔型，以支持可视化。具体进行了一组实验，以揭示在气泡直径分布和体积传质系数上改变水和空气流速的影响。使用图像处理方法测量气泡直径，使用动态方法测量体积传质系数。结果表明，水的流速增加了较小的气泡直径，以及更均匀的气泡直径分布。此外，与空气流速相比，水流量对对体积传质系数的变化具有更大的影响。

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《Basic Science International Conference》|2018年|1 v. (various pagings) :|共7页
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Wibawa Endra Juwana; Arif Widyatama; Wiratni; Indarto; Deendarlianto;
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中图分类 O642.3-532;
关键词
microbubble; volumetric mass transfer coefficient;

机译：微泡;体积传质系数;

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1. Optimization of Orifice Shape and Oscillatory Displacement of an Ultrasonic Microbubble Generator to Increase Microbubble Yield [J] . Hokuto KATAOKA, Ryo KAMEDA, Toshinori MAKUTA Advanced Experimental Mechanics . 2020,第4期

机译：超声波微泡发生器孔口形状和振动位移的优化，以增加微泡产量
2. Hydrodynamic characteristics of the microbubble dissolution in liquid using orifice type microbubble generator [J] . Juwana Wibawa Endra, Widyatama Arif, Dinaryanto Okto, Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers . 2019,第期

机译：使用孔型微泡发生器液体微泡溶解的流体动力学特性
3. Numerical simulation of a self-absorbing microbubble generator for a cyclonic-static microbubble flotation column [J] . LI Lin, LIU Jiongtian, WANG Lijun, 矿业科学技术（英文版） . 2010,第001期

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4. An Evaluation of the Horizontal Injection Microbubble Generator [C] . Wibawa Endra Juwana, Arif Widyatama, Wiratni, Basic Science International Conference . 2018

机译：水平注入微胶布发生器的评价
5. Modification of turbulent structure in channel flows by microbubble injection close to the wall. [D] . Gutierrez Torres, Claudia Del Carmen. 2004

机译：通过在靠近壁处的微气泡注入来改变通道流动中的湍流结构。
6. Parameters Optimization of Catalytic Tubular Nanomembrane-Based Oxygen Microbubble Generator [O] . Sumayyah Naeem, Farah Naeem, Jing Zhang, 2020

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7. We conducted experiments using a Solar-Sea-Oasis (SSO) and a microbubble generator (MB) toimprove hypoxic condition at mooring place in Tokyo University of Marine Science and Technology. We looked intoeffects of these apparatuses by computational fluid dynamics (CFD). When we operated SSO, the effect of dissolvedoxygen (DO) supply was only confirmed near the water outlet. This was suggested by computational fluid dynamicsthat water that came out from water outlet rising upward without staying in the bottom was the causes. Then, weconducted experiments using a MB to aerate bottom of the sea more directly. Vertical distributions of DO showedoxygen was supplied horizontally, but DO concentration increased about 0.24 mg L-1 that was lower than SSOexperiment. This was suggested by CFD that water came out from MB generator spread horizontally without stayingnear the MB generator was the cause. Therefore, it is necessary to improve of making the MB water staying morenear the MB generator. [O] . 遠矢亮, 小島諒子, 石丸隆, 2010

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An Evaluation of the Horizontal Injection Microbubble Generator

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