| Project/Area Number |
02555121
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
都市工学・衛生工学
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
TAMBO Norihito Hokkaido Univ., Fac.of Eng., Professor, 工学部, 教授 (80001147)
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| Co-Investigator(Kenkyū-buntansha) |
ZAITSU Yasushi Fuji Electric Corporate Research and Development, Ltd., Research Manager, 副主任研究員(研究開
ITOH Haruo Fuji Electric Co., Ltd., Water Treatment Dept., General Manager, 水処理設計部, (研究開発担当)部長
NAKANOWATARI Takeyoshi Hokkaido Univ., Fac.of Eng., Assistant, 工学部, 助手 (90207853)
MATSUI Yoshihiko Univ., Fac.of Eng., Assistant, 工学部, 助手 (00173790)
KAMEI Tasuku Hokkaido Univ., Fac.of Eng., Associate Professor, 工学部, 助教授 (70001998)
大戸 時喜雄 富士電機総合研究所, 研究員
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| Project Period (FY) |
1990 – 1992
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| Project Status |
Completed (Fiscal Year 1992)
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| Budget Amount *help |
¥11,300,000 (Direct Cost: ¥11,300,000)
Fiscal Year 1992: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1991: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1990: ¥5,100,000 (Direct Cost: ¥5,100,000)
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| Keywords | Coagulation / Flocculation / Sedimentation / Color removal / Automatic control / Instrumentation / Turbidity removal / フロック / 粒子計測 / 凝集センサ- / フロック径計測 / 吸光度変動法(PDA) / 色度凝集予測 / 沈降速度予測 / 凝集沈殿 / 水処理 / 凝集粒子径計測 / 決降速度予測 |
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| Research Abstract |
A dual wave length photometric dispersion analyzer has been proposed as a sensor for the automatic control of coagulation and flocculation processes. The results obtained are summarized as follows,
1)Generation of microflocs can be measured from the beginning in progress of their growth with the dual wave length (Infrared and Ultraviolet regions') photometric dispersion analyzer designed and manufactured by the researcher.
2)Coagulability of colored substances are detected on line measurement with coexistence of turbidity on the algorithm of the dual wave length measurement.
3)Automatic control of coagulation and flocculation processes is possible without lag time of response by introducing information obtained by the sensor in a microfloc stage.
4)Algorithms of automatic control of coagulation and flocculation processes are proposed.
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