| Project/Area Number |
15K00599
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental conscious materials and recycle
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| Research Institution | University of Tsukuba |
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Principal Investigator |
LEI Zhongfang 筑波大学, 生命環境系, 准教授 (30634505)
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| Co-Investigator(Kenkyū-buntansha) |
張 振亜 筑波大学, 生命環境系, 教授 (20272156)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | リン回収 / 好気性グラニュール化 / 廃棄活性汚泥 / 熱水前処理 / 嫌気性消化 / Aerobic granular sludge / P recovery / N recovery / P bioavailability / Hydrothermal treatment / Activated sludge / Phosphorus accumulation / Waste activated sludge / Ammonia stripping / Nitrogen recovery / Algal-bacterial granule / Fermentation liquor / Livestock manure |
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| Outline of Final Research Achievements |
Phosphorus (P) as a non-renewable resource plays important roles in agricultural and industrial activities. Japan is the 8th largest P consumption nation with all the P resources being imported from other countries. This project investigated the feasibility of P-rich granules production from waste activated sludge by combining hydrothermal pretreatment, anaerobic digestion and aerobic granulation. Results show that hydrothermal treatment can be a cost-effective process when the treatment temperature and duration are optimized according to the energy balance of enhanced methane production from the pretreated waste activated sludge. P-rich granules (6-10%) with P bioavailability up to 95% could be successfully cultivated using synthetic digestate or wastewater.
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