Fundamental research on high speed water treatment for large volume water using water cavitation and plasma

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420238
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Saga University
• Principal Investigator: Ihara Satoshi 佐賀大学, 工学(系)研究科(研究院), 准教授 (90260728)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 水処理 / プラズマ / キャビテーション / 殺菌 / 大腸菌 / 化学的活性種

Outline of Final Research Achievements

Purpose of this research is to build technology on purification of water with large volume using one-path treatment. Especially water cavitation and discharge plasma were used simultaneously for purification in this research.
Escherichia coli whose initial number density was 2×1015 m-3 was used as a specimen for testing. In our experiments, 5 pair of electrodes was used, and a sterilization ratio of about 83 %, 97 % were obtained at a treatment time of 6, 18 seconds, respectively. A treatment time of 6 seconds corresponds to one-path treatment. From the results, it seems that more than 90 % of sterilization ratio is obtained at 15 pair of electrodes.

Free Research Field

放電プラズマ工学