1994 Fiscal Year Final Research Report Summary
Construction of water and wastewater treatment systems with membrane as a main separation process
| Project/Area Number |
04302047
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| Research Category |
Grant-in-Aid for Co-operative Research (A)
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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) |
YUASA Akira Gifu Univ., Institute for Basin Ecosystem Studies, Professor, 流通環境研究センター, 教授 (10109499)
NAKAMURA Fumio Yamanashi Univ., Fac.of Eng., Professor, 工学部, 教授 (60077203)
SUMITOMO Hisashi Kyoto Univ., Fac.of Eng., Professor, 工学部, 教授 (20026040)
FUJITA Kenji Tokyo Univ., Fac.of Eng., Professor, 工学部, 教授 (40107529)
WATANABE Yoshimasa Hokkaido Univ., Fac.of Eng., Professor, 工学部, 教授 (00040999)
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| Project Period (FY) |
1992 – 1994
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| Keywords | Membrane separation / Hybrid system / Biofilm, membrane system / Microbial reactions / Adsorption / Air bubbling / Coagulation / Wastewater treatment |
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| Research Abstract |
The research group carried out a series of studies on the membrane application to the water and wastewater treatment. The main objectives are as follows :
(1) To understand the relationship between the pre-coagulation and filtration rate of various membranes, (2) To establish the theoretical model describing the fouling mechanism and membrane washing process, (3) To evaluate the performance of hybrid membrane system consisting of membrane and activated carbon adsorption processes, and (4) To find a way to promote the biological activity in the membrane process.
The main conclusions were obtained in the research :
(1) Pro-coagulation improved the quality of permeate but decreased the filtration rate, (2) Microbial growth on the membrane surface has an important role in the fouling of the membrane, (3) The hybrid system with the powdered activated carbon and MF membrane can effectively remove pesticides and natural organic matters, and (4) The biofilm developed on the rotating membrane can oxidize ammonia in low concentrations.
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