2001 Fiscal Year Final Research Report Summary
Development of Excess-Sludge Zero-Emission Type of Activated Sludge Process
| Project/Area Number |
11680583
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
環境保全
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| Research Institution | Ube National College of Technology |
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Principal Investigator |
MURAKAMI Sadaaki Ube Ntional College of Technology, Department of Biological and Chemical Engineering, Professor, 物質工学科, 教授 (00035065)
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| Co-Investigator(Kenkyū-buntansha) |
竹内 正美 宇部工業高等専門学校, 物質工学科, 助教授 (30043889)
柿並 孝明 宇部工業高等専門学校, 物質工学科, 教授 (30224348)
清水 英男 宇部工業高等専門学校, 制御情報工学科, 教授 (90043877)
林 知得 三菱重工業株式会社, 下関造船所・船舶海洋部・新製品課, 課長
西村 基弘 宇部工業高等専門学校, 物質工学科, 助教授 (30259931)
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| Project Period (FY) |
1999 – 2000
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| Keywords | Aactivated Sludge Process / Sludge Reduction / Sub-Supercritical Water / Solid Wastes / Domestic Waste-Water / Bioreactor / Reaction Mechanism |
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| Research Abstract |
(1) Purpose
The sludge from biological treatment facility for domestic wastewater is predominant among solid wastes, and the large amount of cost is required to treat it. The development to reduce the excess sludge has been studied, and the excess sludge was treated with hydrothermal reaction and the treated sludge was by return of it into the bioreactor.
(2) Results
The bio-polymer compounds contained in the sludge was decomposed into small molecular compounds such as sugars, amino-acid and fats with hydrothermal reaction. The small molecular compounds was returned into the bioreactor and decomposed into inorganic compounds.
(3) Prospect
In future research, we will try to evaluate the treatment process developed in the present research from viewpoints concerning performance, cost and to transfer our technology to industrial sector. And also, the additional unaerobic process is necessary to prevent the increase of substrate by the return of the treated sludge and to produce the biogas.
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