Clarification of Effects of Parameters on the Water Purification Using Micro bubbles

阐明参数对微气泡净水的影响

• 批准号: 21560184
• 负责人: MINAGAWA Hisato
• 金额: $ 2.66万
• 依托单位: The University of Shiga Prefecture
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21560184/
• 关键词: マイクロバブル; 水質浄化; ゼータ電位; COD; COD値

In order to make clear the effect of micro bubbles on the water purification or the water itself, we made experiments on what effect appears when adding micro bubbles on water with changing the parameters relating to the producing processes of micro bubbles. Measurements were performed in the laboratory consistently controlled lest the disturbances should affect the results. The effects of parameters were investigated under changing the producing method of micro bubbles, gas species, bubble diameter and its distribution, void fraction and temperature. The measured values in the experiments were the zeta potential, the DO, the COD and the ph values of liquid phase, the drag reduction of pipe flow caused by micro bubbles, and the washing capability.As a result, the DO value kept a saturation value when micro bubbles were supplied, the COD value also increased. On the washing ability of micro bubbles, it was found that the bubbles produced by the sharing method have some ability in washing. On the other hand, the bubbles produced by the sharing method were also effective on the drag reduction of pipe flow. The zeta potential was also affected by the producing method of micro bubbles, and the gas species in some degree.

为了弄清微气泡对水的净化效果或对水本身的影响，通过改变微气泡产生过程的相关参数，对水中加入微气泡后产生的效果进行了实验研究。测量在实验室中进行，实验室始终受控，以免干扰影响结果。通过改变微气泡的产生方式、气体种类、气泡直径及其分布、含气率和温度，研究了参数对微气泡的影响。实验测定了微气泡对液相的zeta电位、溶解氧、化学需氧量、pH值、管流阻力的影响以及清洗能力，结果表明，微气泡的加入使溶解氧保持饱和状态，化学需氧量也随之增加。在微气泡的洗涤能力方面，研究发现，采用共混法产生的微气泡具有一定的洗涤能力。另一方面，共享法产生的气泡对管流的减阻也有一定的效果。微气泡的产生方式和气体种类对zeta电位也有一定的影响。

项目成果

湖水に対するマイクロバブルの供給-CODへの影響の検討-

向湖水中供给微气泡-对COD影响的研究-

• 发表时间: 2010
• 作者: 永松幹浩;南川久人;安田孝宏;山田哲史
• 通讯作者: 山田哲史

マイクロバブルのゼータ電位に及ぼす発生方式及び気体種の影響

生成方式和气体种类对微气泡zeta电位的影响

• 发表时间: 2012
• 作者: 渡部晃也;南川久人;安田孝宏
• 通讯作者: 安田孝宏

多孔質セラミックを用いたマイクロバブル生成効率の向上

使用多孔陶瓷提高微泡产生效率

• 发表时间: 2011
• 作者: 山下宏;青柳秀紀;南川久人
• 通讯作者: 南川久人