Demonstration of Locally Produced and Consumed Energy Use through a High-Efficiency Digestion System
First written in FY2017. 6 of 7 entries say "Advanced", first in FY2018. Latest entry: FY2025.
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- FY2025AdvancedAnnual report
「The following results were confirmed from the FY2024 research: · Discharged sludge volume: approximately 45% reduction · Adverse effects on effluent water quality: none confirmed」
In the final year of independent research on the high-efficiency digestion system, we confirmed an approximately 45% reduction in discharged sludge volume and no adverse effect on effluent water quality, and continue to promote adoption by and expand sales to local governments. - FY2024AdvancedAnnual report
「In March 2023, during the renovation of the mechanical equipment at the existing digestion tank at the Karatsu Water Reclamation Center, a solubilization unit was installed as the first unit for a local government, serving as the digestion tank heating equipment. The digestion tank has a capacity of 1,860 m3.」
The first high-efficiency digestion system for a local government was installed, and an approximately 42% reduction in discharged sludge volume and no adverse effect on effluent water quality were confirmed. Expanded sales to local governments are continuing. - FY2023AdvancedAnnual report
「Gas production per unit of organic matter: approximately 23% increase; digestion rate: approximately 12% improvement; discharged sludge volume: approximately 46% reduction; no adverse effect on effluent water quality confirmed」
In independent research on the high-efficiency digestion system, we confirmed an approximately 23% increase in gas production, an approximately 12% improvement in the digestion rate, an approximately 46% reduction in discharged sludge volume, and no adverse effect on effluent water quality, and are proceeding with adoption by and expanded sales to local governments. - FY2022AdvancedAnnual report
「Following approximately one year of research, we confirmed that the increase in return-flow loading associated with high-efficiency digestion had no discernible effect on effluent water quality.」
Following approximately one year of research on the high-efficiency digestion system, we confirmed that the increase in return-flow loading had no effect on effluent water quality and are proceeding with adoption by and expanded sales to local governments. - FY2020AdvancedAnnual report
「From FY2019 onward, operations at the demonstration facility continued during the independent research period, and verification was conducted of the moisture-content reduction effect of the screw press dehydrator, which had not been verified in the previous year's independent research, as well as high-load operation with a digestion period of 15 days.」
After publication of the guidelines, the project moved to the independent research stage, and the moisture-content reduction effect of the screw press dehydrator and high-load operation with a 15-day digestion period were verified. - FY2018AdvancedAnnual report
「The contract was signed in July 2017, the facility was completed in January 2018, and demonstration operations began.」
After being selected for B-DASH, construction of the demonstration research facility was completed and demonstration operations began. - FY2017First statedAnnual report
「We will advance the demonstration of the high-efficiency digestion system through the Demonstration Research on the Practical Application of Technology for Local Energy Use through a High-Efficiency Digestion System at the Karatsu Water Reclamation Center in Karatsu, Saga Prefecture, which was selected in March this year for the Ministry of Land, Infrastructure, Transport and Tourism's FY2017 Breakthrough Technology Demonstration Project for Sewerage (B-DASH Project).」
The demonstration research on the high-efficiency digestion system at the Karatsu Water Reclamation Center in Karatsu, Saga Prefecture, was selected for the FY2017 B-DASH Project.