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Hybrid research concerning regional adaptation for continuously sanitary management of On-Site black water treatment

Research Project

Project/Area Number 20H04391
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 64060:Environmental policy and social systems-related
Research InstitutionOchanomizu University

Principal Investigator

OTAKI MASAHIRO  お茶の水女子大学, 基幹研究院, 教授 (70272367)

Co-Investigator(Kenkyū-buntansha) 風間 しのぶ  東京大学, 大学院工学系研究科(工学部), 特任准教授 (20749444)
大瀧 友里奈  一橋大学, 大学院社会学研究科, 教授 (50422382)
本田 秀仁  追手門学院大学, 心理学部, 准教授 (60452017)
中久保 豊彦  お茶の水女子大学, 基幹研究院, 准教授 (70648766)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2020: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
KeywordsOn-Site Sanitation / PMMoV / PPCPs / 情報伝達手法 / アンケート調査 / 簡易式オンサイトし尿処理設備 / 維持管理 / 住民主体 / 衛生水質指標 / ハイブリッド型研究 / On Site Sanitation / 土壌からのウイルス抽出 / 住民の行動変容 / 情報提供 / オンサイトサニテーション / オンライン調査
Outline of Research at the Start

途上国~中進国で主たる排水処理方式である簡易式オンサイトし尿処理設備(OSTS)について,衛生水質指標(PMMoVやPPCPs)の導入や地理的条件を考慮しての動態解析といった科学的根拠に基づいた維持管理法の確立を目指す.さらに持続可能なものとするために使用者が主体的に管理できる体制を構築する方法論を確立する.この様に科学的側面と社会科学的側面のハイブリッド型の研究を通して,実効性の高いOSTS維持管理方法の将来像を描く.

Outline of Final Research Achievements

The sanitation situation in Sri Lanka where simple OSS(On-Site Sanitation)that is not compatible with flush toilets have been introduced mainly and Ho Chi Minh City, Vietnam which introducing advanced OSS were evaluated. The PMMoV, a human faecal-derived virus, was used to determine the discharge from the OSS and the load on the surrounding water environment, and a method was proposed to determine the contamination status at the source using PPCPs as an indicator. Furthermore, a comparison of the effectiveness of information feedback using video and still images to encourage the local population to select the most appropriate OSS showed that video encourages a more sustainable preference for selecting a more suitable OSS.

Academic Significance and Societal Importance of the Research Achievements

本研究成果によりトイレの水洗化が進んでいるものの,それに対応していない排水処理システムが主となっている多くの途上国地域において,衛生状況を把握するためのツールが示されたといえる.OSS周辺土壌からのウイルス検出方法やPPCPsの組成をモニタリングすることで排出源特性を把握する手法は,今回の対象地域以外においても適用可能な方法であると考えられる.また個別排水処理(OSS)の選択は現地住民主導であるため,住民の意識を最適なOSS選択へと導くための情報伝達手法についても効果的な方法が示された.以上の成果は途上国の衛生環境の改善に寄与する成果と言える.

Report

(3 results)
  • 2023 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (8 results)

All 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] 国立Ruhuna大学/国立Peradeniya大学(スリランカ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ホーチミン市科学大学(ベトナム)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Demand-side water management using alternative water sources based on residential end-use2022

    • Author(s)
      Otaki Y.、Otaki M.、Chaminda T.、Matsui T.、Bokalamulla R.、Thathsarani R.、Joganathan T.
    • Journal Title

      Water Practice and Technology

      Volume: 17 Issue: 4 Pages: 949-959

    • DOI

      10.2166/wpt.2022.031

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pharmaceutical Contaminants in Shallow Groundwater and Their Implication for Poor Sanitation Facilities in Low‐Income Countries2021

    • Author(s)
      Do Quyen Thi Thuy、Otaki Masahiro、Otaki Yurina、Tushara Chaminda、Sanjeewa Ishara Wijesinghe
    • Journal Title

      Environmental Toxicology and Chemistry

      Volume: 41 Issue: 2 Pages: 266-274

    • DOI

      10.1002/etc.5110

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hygiene risk of waterborne pathogenic viruses in rural communities using onsite sanitation systems and shallow dug wells2021

    • Author(s)
      Otaki Yurina、Otaki Masahiro、Chaminda Tushara、Kishimoto Yosuke、Nakazawa Yue、Gimhana Kasun
    • Journal Title

      Science of The Total Environment

      Volume: 752 Pages: 141775-141775

    • DOI

      10.1016/j.scitotenv.2020.141775

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sewage Markers as Determinants to Differentiate Origins of Emerging Organic Pollutants in an Urban Sri Lankan Water Drainage Network2021

    • Author(s)
      Quyen Do Thi Thuy、Masahiro Otaki、Otaki Yurina、Chaminda Tushara
    • Journal Title

      Water

      Volume: 13 Issue: 20 Pages: 2898-2898

    • DOI

      10.3390/w13202898

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] ベトナム・ホーチミンにおけるセプティックタンクの管理状況と病原微生物指標の実態調査2022

    • Author(s)
      徳永千夏,柴尾映里奈,大瀧雅寛,大瀧友里奈,Do Thi Thuy Quyen
    • Organizer
      日本水環境学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Organic Wastewater Compounds in Sewage Treatment Plant, Hospital Discharge and Drainage Canal System in Galle city, Sri Lank2021

    • Author(s)
      Do Thi Thuy Quyen, Otaki. M. and Chaminda T.
    • Organizer
      The Water and Environment Technology Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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