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Establishment of psychrophilic high-rate wastewater treatment process

Research Project

Project/Area Number 20K04763
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionKagoshima National College of Technology

Principal Investigator

YAMADA Masayoshi  鹿児島工業高等専門学校, 都市環境デザイン工学科, 教授 (80469593)

Co-Investigator(Kenkyū-buntansha) 黒田 恭平  国立研究開発法人産業技術総合研究所, 生命工学領域, 研究員 (50783213)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords低温メタン発酵 / UASB-DHSシステム / メタン生成活性試験 / メタン発酵 / 有機性廃水 / 一槽型CSTR/ABR
Outline of Research at the Start

本研究では、20℃前後で排出される多種多様な産業廃水に適用可能な新規処理プロセスの研究開発に取り組み、産業廃水処理プロセスの省エネルギー化、低ランニングコスト化に貢献する技術の確立を目指す。低温UASB-DHSシステムおよび低温一槽型CSTR・ABR-DHSシステムにより連続処理実験を行い、低温メタン発酵の処理性能、安定性、余剰汚泥発生量の抑制効果等を評価する。また、低温メタン発酵処理での知見が不足している微生物学的情報を16S rRNA/16S rDNA解析により解明し、低温メタン発酵技術の情報基盤を提供する。低温メタン発酵を核とした創・省エネルギー型廃水処理システムを構築する。

Outline of Final Research Achievements

In this study, we conducted a continuous treatment experiment for 425 days using the psychrophilic UASB-DHS system for sweet potato-based starch-producing wastewater. Under the organic loading rate of 5.04 kgCOD/m3/day, the COD removal efficiencies were 91 ± 1% and 99 ± 1% in the UASB reactor and the whole system, respectively, indicating that the UASB-DHS system is suitable for the wastewater treatment under psychrophilic conditions. Methanogenic activity tests showed that almost no methanogenic activities (0.000-0.003 gCOD/gVSS/day) were obtained at day 102, while the remarkable activities were obtained at the day 355 (0.08-0.2 gCOD/gVSS/day). In addition, the relative abundances of order Bacteroidales and syntrophic bacteria based on 16S rRNA gene sequencing were significantly increased from phase 2 (operational day 43) to phase 4 (day 352); thus, long operational days (at least > 100 days) are required to acclimate the psychrophilic methanogenic microbiome in the UASB reactor.

Academic Significance and Societal Importance of the Research Achievements

本研究では、20℃前後で排出されるさつまいもでん粉廃水処理に適用可能な低温メタン発酵処理プロセスの研究開発に取り組み、廃水処理プロセスの省エネルギー化、低ランニングコスト化に貢献可能な低温UASB-DHSシステムを提案した。低温UASB-DHSシステムにより醤油製造廃水処理に加え、さつまいもでん粉製造廃水の連続処理実験を行い、低温メタン発酵の処理性能、安定性を評価し、新たにさつまいもでん粉製造廃水への低温メタン発酵を組み込んだ処理システムが適用可能であることがわかった。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Ecogenomics Reveals Microbial Metabolic Networks in a Psychrophilic Methanogenic Bioreactor Treating Soy Sauce Production Wastewater2021

    • Author(s)
      Kuroda Kyohei、Narihiro Takashi、Nobu Masaru K.、Tobo Atsushi、Yamauchi Masahito、Yamada Masayoshi
    • Journal Title

      Microbes and Environments

      Volume: 36 Issue: 4 Pages: n/a

    • DOI

      10.1264/jsme2.ME21045

    • NAID

      130008094799

    • ISSN
      1342-6311, 1347-4405
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Assessing the effect of green tuff as a novel natural inorganic carrier on methane-producing activity of an anaerobic sludge microbiome2021

    • Author(s)
      Kyohei Kuroda, Futaba Shinshima, Shoichi Tokunaga, Taro Q.P. Noguchi, Masahito Yamauchi, Masaru K. Nobu, Takashi Narihiro, Masayoshi Yamada
    • Journal Title

      Environmental Technology & Innovation

      Volume: 24 Pages: 101835101835-101835101835

    • DOI

      10.1016/j.eti.2021.101835

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] CSTR-ABR システムによるさつまいもでん粉製造廃水の連続処理実験2022

    • Author(s)
      瀬戸口知希、山田真義。、山内正仁、片平智仁、池田匠児
    • Organizer
      2022年度日本水環境学会九州沖縄支部研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 一槽型CSTR/ABRによる醤油製造廃水のメタン発酵処理2020

    • Author(s)
      林航輝、黒田恭平、有川皓大、片平智仁、山内正仁、山田真義
    • Organizer
      2020年度日本水環境学会九州沖縄支部研究発表会講演要旨集
    • Related Report
      2020 Research-status Report
  • [Presentation] 低温(20℃)UASB-常温DHS反応器を用いたでん粉製造廃水の連続処理実験2020

    • Author(s)
      廣津晴樹、黒田恭平、大迫尚椰、片平智仁、山内正仁、山田真義
    • Organizer
      2020年度日本水環境学会九州沖縄支部研究発表会講演要旨集
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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