| Abstract |
| As the method of mitigation measures to reduce green algaes directly in the field. Ozone microbubbles are erupting inside of water, so the residence time is long and solubility is increasing as an extension of surface area. Also dispersion force and penetration are strong and able to get algicidal effect by OH* radical generated crushing effects when it disappears. Ozone microbubbles are effective in removal and restraint odor caused by occurrence of algae and anaerobic reaction, reduction of turbidity, improvement of water quality and preventing nutrients elution by resolvement anaerobic condition of bottom materials, and ultimately contribute to the aquatic ecosystem. The results of lab-test and field examination are as follow,
- By microscopic analysis in the laboratory, the ozon injection rate of Algae`s movement stops for shock is 2ppm.
- By the field examination, deteriorated water quality in the stagnated water area had been recovered 20days after starting operation, and there`s no more growing of algae in high density. 240g per day of ozon injection is enough to maintain water quality.
- If chloropyll-a is ozonated, the color of algae turns from green to light brown. This means that the original color of chlorophyl is decolored by ozone and concentration of ozone injection was about 6~8ppm. |
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| Key Words |
| Algae, Ozone MicroBubbles, Stagnated Area, Chlorophyll-a, ecosystem |
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