Updated on 2026/08/24

写真a

 
Hiroyuki KATO
 
Organization
Research and Development Initiative Institute Professor
Contact information
The inquiry by e-mail is 《here》
External link

Degree

  • 博士（環境科学） ( 東北大学 )

Education

  • 1986.3
     

    Waseda University   master course   completed

Research History

  • 2026.4 - Now

    Chuo University   Research and Development Initiative

  • 2020.4 - 2026.3

    The University of Tokyo   The Graduate School of Engineering Department of Urban Engineering

  • 1984.4 - 2020.3

    Ministry of Land, Infrastructure, Transport and Tourism   Sewerage and Wastewater Management Department   Director, Sewerage Management Division

Research Interests

  • Sewerage Policy Public-Private Partnerships (PPP) Agricultural Use of Sewerage Resources Digital Transformation (DX) Measures for Aging Sewer Pipes International Water Business Torrential Rainfall Water and Wastewater Systems in Europe and the United States

Research Areas

  • Environmental Science/Agriculture Science / Sound material-cycle social systems

  • Others / Others  / 上下水道の官民連携/PPP

Papers

  • Analyzing the Impact of Public–Private Partnerships on the Operational Efficiency of Wastewater Treatment Plants Using the Malmquist Index Reviewed

    Shuhei Murakami Hiroyuki Kato

    2026.8

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    Authorship：Last author   Language：Japanese   Publishing type：Research paper (scientific journal)  

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  • Unveiling the biological methylation of 2,4,6-trichlorophenol and the formation of 2,4,6-trichloroanisole in a municipal wastewater treatment plant Reviewed

    Ei Ogata, Viet-Dung Pham, Ikuro Kasuga, Hiroyuki Kato

    Journal of Hazardous Materials   Volume 497   2025.10

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    Authorship：Last author  

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  • Historical Changes in Sewage-sludge Treatment in Japan and the Implemented Policies Reviewed

    Takeshi Sannomiya, Masaki Suehisa, Chika Abe, Hiroyuki Kato

    Journal of Material Cycles and Waste Management   2025.9

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    Authorship：Last author  

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  • Farmers’ Characteristics and Willingness to Use Sewage Sludge-Derived Fertilizers: A Survey Study Reviewed

    Ryuzin Kenta, Hiroyuki Kato

    2025.8

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  • Earthy/musty odour bioaccumulation in Plecoglossus altivelis grown in a land-based aquaculture fed by reclaimed secondary effluent in wastewater treatment plant Reviewed

    Viet-Dung Pham, Ei Ogata, Hiroyuki Kato

    Water Reuse   14 ( 3 )   265 - 278   2024.7

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Publisher：IWA Publishing  

    ABSTRACT

    Reclaimed wastewater (RWW) has been used globally for centuries, though its application in aquaculture is less extensive. Limited study has addressed impacts of RWW-derived volatile odour compounds (VOCs), such as 2,4,6-trichloroanisole (TCA), 2-methylisoborneol (MIB), and geosmin (GSM), on fish quality. This study aims to (1) assess the feasibility of reusing secondary effluent from a municipal wastewater treatment plant (WWTP) for Plecoglossus altivelis aquaculture in a land-based flow-through system and (2) evaluate the sensory effects of selected VOCs on fish quality. Results showed that increased temperature and ammonia levels in summer RWW negatively affected fish growth, while autumn RWW did not. Heavy metals in fish did not cause health issues. TCA, MIB, and GSM concentrations in fish tissues were 4.7–5.7, 0.3–40.5, and 1.1–1.9 mg kg−1, respectively. TCA emerged as the most concerning odorant, with higher relative odour intensity than MIB and GSM in RWW-cultured fish, regardless of seasonal change. This study is the first to report on a self-constructed aquaculture system using RWW at a WWTP, recommending effective VOC and ammonia removal for sustainable RWW use in aquaculture. Additionally, the study highlighted TCA's impact as an anthropogenic indicator in aquatic environments amid increasing WWTP prevalence in developed cities.

    DOI： 10.2166/wrd.2024.127

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  • Farmers’ Characteristics and Willingness to Use Sewage Sludge-Derived Fertilizers: A Survey Study Reviewed

    Volume 60   2023.8

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    Authorship：Lead author  

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  • The Trend in Measures Against Urban Inundation in Japan Reviewed

    Hiroyuki Kato

    Journal of Disaster Research   16 ( 3 )   2021.4

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    Authorship：Lead author   Language：English  

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  • Operational Improvement of Main Pumps for Energy-Saving in Wastewater Treatment Plants Reviewed

    Hiroyuki Kato, Hiroyuki Fujimoto, Kenichi Yamashina

    Water   11 ( 12 )   2438 - 2438   2019.11

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

    Efforts towards energy independence in wastewater treatment plants (WWTPs) constitute important policy in Japan. Energy-saving strategies consist of operational improvements and the installation of energy-saving devices. The energy consumed by the main pumps is equal to approximately 14% of the energy consumed by WWTPs in average in Japan. The main pumps, which are simple machines, do not have the innovative, energy-saving devices associated with other equipment used in WWTPs; therefore, realizing energy savings through operational improvement is extremely important. In recent years, variable frequency drives (VFDs) have increasingly been used to control the rotation speed of main pumps in order to save energy. However, there are many cases where power consumption increases due to the excessive rotation speed control ignoring pump characteristics. In this study, improvement of the operating method based on the power consumption analysis is examined for A WWTP. Differences in characteristics between water pumps and wastewater pumps are discussed, and simulation results without rotational speed control show a reduction in power consumption of 10%. Daily operational report data of the WWTP are used for the power consumption analysis, and additional data acquisition is not necessary. Thus, the power consumption analysis method used in this study can be easily applied to other WWTPs.

    DOI： 10.3390/w11122438

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Books

  • 水分野のPPP

    加藤裕之ほか（ Role： Joint author第1章 日本の上下水道のPPPの現状と今後の展望）

    時事通信出版局,時事通信社  2026.1  （ ISBN:9784788720794 ）

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    Total pages：v, 153p   Language：Japanese  

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  • 上下水道事業PPP/PFIの制度と実務 : ウォーターPPP/コンセッションまで官民連携手法を徹底解説

    加藤, 裕之, 茨木, 誠, 福田, 健一郎

    中央経済社,中央経済グループパブリッシング(発売)  2024.9  （ ISBN:9784502496417 ）

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    Total pages：viii, 223p   Language：Japanese  

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  • コンセプト下水道2

    加藤, 裕之（ Role： Sole author）

    公共投資ジャーナル社  2024.5  （ ISBN:9784906286997 ）

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    Total pages：228 p   Language：Japanese  

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  • 下水道イノベーションセミナー@本郷講演集

    東京大学下水道システムイノベーション研究室, 滝沢, 智, 加藤, 裕之（ Role： Edit）

    公共投資ジャーナル社  2023.6  （ ISBN:9784906286959 ）

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    Total pages：240 p   Language：Japanese  

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  • サニテーションが生み出す物質的・経済的価値

    藤原, 拓, 池見, 真由, 牛島, 健, Sintawardani, Neni, 原田, 英典, 加藤, 裕之, 佐野, 大輔, 赤尾, 聡史, 楠田, 哲也, 船水, 尚行（ Role： Joint author）

    北海道大学出版会  2023.3  （ ISBN:9784832929531 ）

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    Total pages：x, 208p   Language：Japanese  

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  • コンセプト下水道

    加藤, 裕之（ Role： Sole author）

    公共投資ジャーナル社  2021.5  （ ISBN:9784906286898 ）

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    Total pages：229 p   Language：Japanese  

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  • フランスの上下水道経営 : PPP・コンセッション・広域化から日本は何を考えるか

    加藤, 裕之, 福田, 健一郎, 関, 隆宏, 玉川, 傑洋, 松村, 隆司, 町田, 聖娘, 後藤, 正太郎（ Role： Edit）

    日本水道新聞社  2020.3  （ ISBN:9784930941718 ）

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    Total pages：235p   Language：Japanese  

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  • 新しい上下水道事業 : 再構築と産業化

    山本, 哲三, 佐藤, 裕弥（ Role： Joint author第11章 下水道資源のイノベーション）

    中央経済社,中央経済グループパブリッシング (発売)  2018.7  （ ISBN:9784502270413 ）

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    Total pages：iv, v, 255p   Language：Japanese  

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