1995 Fiscal Year Final Research Report Summary
複合処理システムにおける難分解有機性廃液の高率処理に関する研究
| Project/Area Number |
06453208
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
環境保全
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| Research Institution | Ube Technical College (1995)
Yamaguchi University (1994) |
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Principal Investigator |
FUKAGAWA Masayuki Ube National College of Technology, Professor, 物質工学科, 教授 (20043870)
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| Co-Investigator(Kenkyū-buntansha) |
IMAI Tsuyoshi Yamaguchi University, Research Associate, 工学部, 助手 (20263791)
SEKINE Masahiko Yamaguchi University, Associated Professor, 工学部, 助教授 (30163108)
UKITA Masao Yamaguchi University, Professor, 工学部, 教授 (60035061)
NAKANISHI Hiroshi Yamaguchi University, Emeritus Professor, 工学部, 名誉教授 (70035020)
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| Project Period (FY) |
1994 – 1995
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| Keywords | wastewater treatment / aerobic wastewater treatment / 2stage contact aeration process / anaerobic wastewater treatment / UAHB / non-biodegradable organics / granulation sludge / high sulfide and high organic wastewater |
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| Research Abstract |
In this study, the formation process of granule and treatment characteristics were discussed in an Upflow Anaerobic Hybrid Blanket (UAHB) reactor treating a fermentation process wastewater consisting of high sulfide and ammonia. The results indicated that the granules could be developed in the process for treating sulfide- and ammonia-rich wastewater, and inhibition caused by sulfide was not occurred. Therefore, the UAHB process was shown a better stability for treating the refractory wastewater. The experimental results indicated that 2-stage contact aeration process was suitable process as advanced wastewater treatment of treaed wastewater from UAHB.Therefore, it was thought that the combination process of UAHB and 2-stage contact aeration was optimum process of treating treating a fermentation process wastewater consisting of high sulfide and ammonia.
The start-up of UASB reactor and analyzes of bacterial structures were discussed by using high concentration soy wastewater from fish
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food process. When start-up was finished, 60-70% TOC removal efficiency, and 30-50% lipid removal efficiency were obtained under the TOC loading rate of 10-12kg-TOC/m^3/day. Almost all of the granules in the upper part of sludge bed consisted of Methanothrix-like bacteria while the granules in the lower part presented multi-layr bacterial structures. Consequently, The basic and practical process for TOD and lipid removal from soy wastewater from fish food process was thought to be established.
Photographic wastewater bears high level of various organic and inorganic chemicals which can not be deducted to the extent permitted for disposal only with a biological or a chemical method. We proposed a three-stage treatment system ; the wastewater was treated biologically at first, then chemically to reform the remaining refractory chemicals biodegradable, and biologically again. In this study, ozone was applied to the chemical stage and the removal efficiency of the system was discussed. The basic and practical process for COD removal from photographic wastewater was thought to be established. Less
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