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Assessing pollutant load emission from combined sewer overflows based on monitored changes of water levels and electric conductivity at overflow chambers

Research Project

Project/Area Number 16K14329
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Civil and environmental engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Furumai Hiroaki  東京大学, 大学院工学系研究科(工学部), 教授 (40173546)

Co-Investigator(Kenkyū-buntansha) 春日 郁朗  東京大学, 大学院工学系研究科(工学部), 准教授 (20431794)
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords環境質定量化・予測 / 連続モニタリン / 雨天時汚濁 / 合流式下水道 / 電気伝導度 / 連続モニタリング
Outline of Final Research Achievements

Accumulation and transport of in sewer sediments was studied using a distributed sewerage model to evaluate the occurrence and the behavior of combined sewer overflow (CSO) loads. It was found that there is a large spatial variation in the amount of sediment deposited during dry weather and transported during wet weather. It indicated that spatial distribution characteristics of sediment accumulation and transport should be considered in a sewer network in order to identify the significant sources of the CSO loads.
Occurrence of CSO loads was evaluated by monitoring water level, water temperature and electric conductivity in combined sewers. It was possible to judge the occurrence of overflow to storm water storage facility for flood control based on the relationship between water level and rainfall intensity. EC monitoring data can be used to evaluate dilution level of wet weather wastewater and estimate the contribution of first flash on the pollutant load in combined sewer pipes.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] INUNDATION FORCAST SIMULATION IN URBANIZED COASTAL LOW-LYING AREAS BASED ON HIGH-RESOLUTION PRECIPITATION NOWCAST DATA2017

    • Author(s)
      佐貫 宏、渋尾 欣弘、李 星愛、吉村 耕平、田島 芳満、古米 弘明、佐藤 愼司
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

      Volume: 73 Issue: 2 Pages: I_499-I_504

    • DOI

      10.2208/kaigan.73.I_499

    • NAID

      130006171863

    • ISSN
      1883-8944, 1884-2399
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EVALUATION OF REDUCTION OF COMBINED SEWER OVERFLOW LOADS BY MODEL ANALYSIS OF IN-SEWER SEDIMENT BEHAVIOR2016

    • Author(s)
      賀須井 直規、春日 郁朗、栗栖 太、片山 浩之、古米 弘明
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 72 Issue: 7 Pages: III_153-III_160

    • DOI

      10.2208/jscejer.72.III_153

    • NAID

      130005530532

    • ISSN
      2185-6648
    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] Long term monitoring of water level in sewer networks for validation of urban flood model2017

    • Author(s)
      李星愛(Lee, Sungae)
    • Organizer
      14th IWA/IAHR International Conference on Urban Drainage
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 下水道施設内観測水位データとXRAINを用いた  鶴見川流域における内水氾濫解析2017

    • Author(s)
      李星愛
    • Organizer
      第54回下水道研究発表会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 下水管内堆積物の動態モデル解析を用いた清掃水投入による雨天時越流負荷削減量の評価2016

    • Author(s)
      賀須井 直規
    • Organizer
      土木学会第53回環境工学研究フォーラム
    • Place of Presentation
      北九州国際会議場、北九州市
    • Year and Date
      2016-12-06
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2019-03-29  

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