2019 Fiscal Year Annual Research Report
A Sustainable and Recycling-oriented Wastewater Industry by Maximizing Valuable Resources and Energy Recovery Using the Novel Algal-bacterial Aerobic Granular Sludge Technology
| Project/Area Number |
18H03403
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| Research Institution | University of Tsukuba |
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Principal Investigator |
雷 中方 筑波大学, 生命環境系, 准教授 (30634505)
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| Co-Investigator(Kenkyū-buntansha) |
清水 和哉 筑波大学, 生命環境系, 准教授 (10581613)
張 振亜 筑波大学, 生命環境系, 教授 (20272156)
水野谷 剛 筑波大学, 生命環境系, 准教授 (10500770)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Keywords | Algal-bacterial AGS / Bacterial AGS / Aerobic granular sludge / Shaking SBR / Sequencing batch reactor / Functional microalgae / Lipid accumulation / Nutrients removal |
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| Outline of Annual Research Achievements |
During Year 2019, the following works were completed. (1)Algal-bacterial aerobic granular sludge (AGS) system has been confirmed to effectively remove organics and nutrients under no air bubbling condition. (2)Algal-bacterial AGS system can be operated in continuous-flow mode, achieving stable and high-efficacy performance with much less energy consumption. (3)Algal-bacterial AGS biomass can also be used for biodiesel production due to its high lipid accumulation under appropriate operation condition. (4)New algal-bacterial AGS system can be quickly established (<18 days) when inoculation of small amount of mature algal-bacterial AGS into bacterial AGS system is applied. (5)Two isolated microalgae species were identified to contribute to granulation process and nutrients removal.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
We almost finished the research works planned for the third year.
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| Strategy for Future Research Activity |
(1)Comparison will be further conducted between the bacterial aerobic granular sludge (AGS) and algal-bacterial AGS systems, especially on CO2 sequestration, nutrients accumulation and energy consumption.
(2)Major differences between the naturally growing algae- and functional algae-based AGS systems will be investigated, so as to make clear the advantages of algae cultivation and harvesting between algal-bacterial AGS and the commonly used suspension culture/flotation systems.
(3)The potential of algal-bacterial AGS will be explored on heavy metal removal and recovery from wastewater, targeting the establishment of a side-stream dynamic adsorption/desorption unit to the whole algal-bacterial AGS system.
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