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Establishment of water-saving salt removal system by extension of the surface suction leaching method

Research Project

Project/Area Number 19K06291
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 41030:Rural environmental engineering and planning-related
Research InstitutionTottori University

Principal Investigator

INOSAKO Koji  鳥取大学, 農学部, 教授 (60243383)

Co-Investigator(Kenkyū-buntansha) 野波 和好  鳥取大学, 農学部, 教授 (20704795)
齊藤 忠臣  鳥取大学, 農学部, 准教授 (70515824)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords除塩 / 塩類集積 / 乾燥地 / 農地修復 / リーチング
Outline of Research at the Start

本研究では,申請者が開発した表層吸引溶脱法に基づく節水型除塩装置を圃場での使用に耐えうるようスケールアップするとともに,実際の圃場における複雑な塩類集積の様々な状況に適用可能な運転制御プロセスを開発することで,節水的な除塩システムを確立する.
まず,土壌の水分塩分の挙動を解析できるシミュレーションモデルを用いて,スケールアップした装置の最適運転条件を探索し,設計諸元を決定する.ついで,可変圧力制御システムを開発して,装置の効率的な運転制御法を確立する.開発した装置を圃場に適用して性能評価を行い,実用的な節水型除塩方法を確立する.

Outline of Final Research Achievements

In this study, we attempted to develop a salt removal machine equipped with a larger-scale version of the surface suction leaching device for actual field applications. First, the salt removal process using this method was reproduced by a numerical model, and the existence of optimal operating conditions was clarified by numerical experiments. Next, a salt removal machine equipped with a large-sized surface suction leaching device was fabricated by modifying a cultivator. The machine is equipped with an operation panel that can be automatically controlled so that the operator can complete the salt removal work by himself. Finally, salt removal experiments were conducted using the machine on two types of salt-accumulating soil layers with different permeability. The results showed that a maximum salt removal rate of 65% was achieved in the low permeability soil, but the variation was large and further improvement is needed for practical use.

Academic Significance and Societal Importance of the Research Achievements

塩類集積が深刻化した農地を再生する除塩方法は現在存在しない.そのため,塩類集積が容易に深刻化する乾燥地域では,発生の初期段階において対処する必要がある.本研究では,発生初期の部分的な塩害農地を修復する能動的な方法として表層吸引溶脱装置を実装した自走式除塩作業機を開発した.本機による除塩法は塩類集積農地を抜本的に改善するものではないが,発生する度に逐次処理するという新しい対処法を提示したといえる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020

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

  • [Journal Article] 表層吸引溶脱法による地表面からの塩分の除去2021

    • Author(s)
      猪迫耕二,犬持智,齊藤忠臣,竹下尚志
    • Journal Title

      応用水文

      Volume: 33 Pages: 41-50

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 表層吸引溶脱装置を実装した自走式除塩作業機の開発2022

    • Author(s)
      猪迫耕二,犬持智,野波和好,奥橋瑛良,齊藤忠臣
    • Organizer
      2022年度農業農村工学会全国大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Optimum operational conditions of surface suction leaching method for effective removal of partially accumulated salts from salt-damaged soil2021

    • Author(s)
      Inumochi Satoru, Inosako Koji, Saito Tadaomi, Nonami Kazuyoshi
    • Organizer
      International Conference of Desert Technology 14
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 簡易蒸発法を用いた土壌水分保持曲線および不飽和透水係数の同時測定2021

    • Author(s)
      犬持智,猪迫耕二,齊藤忠臣,井上光弘
    • Organizer
      第75回農業農村工学会中国四国支部講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 表層吸引溶脱法における最適運転条件の検討2020

    • Author(s)
      犬持智,猪迫耕二,齊藤忠臣,野波和好
    • Organizer
      2020年度農業農村工学会大会講演会
    • Related Report
      2020 Research-status Report 2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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