go to text

Johkasou Research Grant

  With the aim of contributing to the development of new technologies related to johkasou, we subsidize the academic research and surveys that form the foundation.
 Research projects eligible for grants are, in principle, research related to johkasou, such as the development of new technology related to johkasou, domestic wastewater treatment methods, and social scientific research.
 In addition, the recipients of the subsidy are researchers who belong to universities, national and public research institutes, public interest corporation research institutes, NPO corporations, etc.During the research period, in principle, research results are to be obtained by the end of the fiscal year.
 However, the period may be extended if deemed necessary due to the content of the research, etc. and other circumstances.
  • Grant amount
 About 1,000,000 yen in the total number of adopted cases
  • Grant results (Showa62 to Reiwa4)
 712 applications
 179 adopted

Regarding the public call for applications for research and research grants on johkasou in Reiwa6

Out of service.

Implementation procedure

Reiwa 5 research grant project on johkasou

The following two subjects were selected by the Research Grant Committee on johkasou in Reiwa 5.

Representative researcher
Estimation of microplastic loads in rivers caused by johkasou treated water
Kenta Yamada
Estimation of microplastic reduction by single-merger conversion with development of simple measurement method
Takumi Shiobara

Research subsidies for the last three years

Representative researcher
Reiwa 2
Research on greenhouse gas emission characteristics and control methods from distributed treatment tanks in tropical and subtropical regions
Fumitake Nishimura
Reiwa 3
Development of technology to predict the processing status of johkasou from fixed-point camera images using deep learning
Shuji Kawakami
Investigation of public awareness regarding the spread of johkasou aiming for a circular and symbiotic society
Masanobu Nagao
Evaluate factors that impede decision-making to convert from single-processing johkasou to joint-processing johkasou and propose measures to promote conversion
Yoshiomi Otsuka
Reiwa 4
Refinement of residents' communication structure model for the spread of johkasou aiming for a cyclical and symbiotic society
Masanobu Nagao


 Information/IT Group
 Tel: 03-3635-4884 Fax: 03-3635-4886
 E-mail: joho@jeces.or.jp
Public interest incorporated foundation
Japan Education Center of Environmental Sanitation
2-23-3 Kikukawa, Sumida-ku, Tokyo
TEL: 03-3635-4880 (Switchboard),

Back to TOP