1998 Fiscal Year Final Research Report Summary
Study on non-chemical control of water bloom in eutrophic lakes with ozone application
| Project/Area Number |
08556039
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
農業機械学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
OKAMOTO Tsuguo THE UNIVERSITY OF TOKYO,GRADUATE SCHOOL OF AGRICULTURAL AND LIFE SCIENCES,PROFESSOR, 大学院・農学生命科学研究科, 教授 (40031215)
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| Co-Investigator(Kenkyū-buntansha) |
SAKAI Naoki UNIVERSITY OF TSUKUBA,INSTITUTE OF AGRICULTURE AND FORESTRY,PROFESSOR, 農林学系, 教授 (00092213)
YONEKAWA Satoshi THE UNIVERSITY OF TOKYO,GRADUATE SCHOOL OF AGRICULTURAL AND LIFE SCIENCES,INSTRU, 大学院・農学生命科学研究科, 助手 (70191658)
TORII Toru THE UNIVERSITY OF TOKYO,GRADUATE SCHOOL OF AGRICULTURAL AND LIFE SCIENCES,INSTRU, 大学院・農学生命科学研究科, 助手 (60172227)
IMOU Kenji THE UNIVERSITY OF TOKYO,GRADUATE SCHOOL OF AGRICULTURAL AND LIFE SCIENCES,ASSOCI, 大学院・農学生命科学研究科, 助教授 (40184832)
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| Project Period (FY) |
1996 – 1998
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| Keywords | early extermination / water bloom / ozone / non-chemical control / mortaliy rate / ozone density |
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| Research Abstract |
Water blooms which consist of blue-green algae, Cyanobacteria of limnoplankton are often observed in lakes in summer season in Japan. Those photo plankton have big propagation under the condition of plenty of insolation, enough temperature, eutrophication in lakes and so on. The phenomenon of water bloom gives some damage to water quality and environment in the lake like as water polution and smelling water. To suppress or exterminate Cyanobacteria population in low level, we tried to applicate ozone bubbling through water within limnoplankton. Cyanobacteria cell surface membrane was broken down by strong oxidative effect of ozone. The Cyanobacteria decreased harf in population in a harf hour after ozone bubbling.
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