91福利

METAWATER announces that for the "Breakthrough by Dynamic Approach in Sewage High Technology Project (B-DASH Project)^*1" conducted by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), the "Demonstration Project for Recycling Sewage Water Using New Phosphorus Recovery System," proposed by a joint research entity consisting of Taiheiyo Cement Corporation (President and Representative Director: Masafumi Fushihara; Head Office: Bunkyo-ku, Tokyo; hereinafter referred to as "Taiheiyo Cement"), the Tokyo Metropolitan Government Bureau of Sewerage (Tokyo Metropolitan Government Public Enterprise Administrator; Sewerage Bureau Commissioner: Koji Okuyama; Head Office: Shinjuku-ku, Tokyo), and METAWATER Co., Ltd. (President and Representative Director: Kenji Yamaguchi, Head Office: Chiyoda-ku, Tokyo) (hereinafter referred to as the "Proposal"), has been adopted as a supplementary project for FY2022.

Accompanying the revision of the Sewerage Act in 2015, the obligation to make efforts to convert biosolid into fuel or fertilizer was imposed on Sewerage System Administrators. Effective utilization through composting has been promoted in the past, but the proportion remains at about 10% in Japan. In addition, the policy outline of the "Task Force for Strengthening the Foundation of Stable Food Supply and Agriculture, Forestry, and Fishery Industries," announced on December 27, 2022, calls for expanding the use of compost and biosolids resources, and increasing the domestic resource conversion rate by 2030.

Considering these circumstances, the Proposal will realize effective utilization of sewage resources such as biosolids by using phosphorus recovery materials to efficiently recover phosphorus from biosolids dewatered separation liquid^*2 and turn it into a stable phosphorus resource

1．Key Points of the Proposal

- Phosphorus recovery material, which has both adsorption and sedimentation properties, efficiently recovers phosphorus from dewatered separation liquid without the use of other chemicals.
- Optimal control of the addition of phosphorus recovery materials according to the phosphorus concentration of the dewatered separation liquid is realized so that the phosphorus recovery materials meet the official standards for "by-product fertilizers" as stipulated by the Law Concerning Assurance of Fertilizer Quality, etc.
- Stable quality and supply of phosphorus recovery products are ensured throughout the year.

2．Effects of the Proposal

- Effective use of sewage resources.
- Contribute to domestic production and stable supply of fertilizers.

3．Overview of Project

- Project members : A joint research group consisting of Taiheiyo Cement Corporation, METAWATER Co., Ltd., Co., Tokyo Metropolitan Government Bureau of Sewerage
- Demonstration field : Sunamachi Sewage Treatment Center, Tokyo Metropolitan Government Bureau of Sewerage (Eastern Sludge Plant)
- Project period : From the day following the execution date of contract to March 31, 2024 (scheduled)
- Division of roles:
Taiheiyo Cement······· Overall supervision, data collection related to phosphorus recovery, study on the conversion of phosphorus recovery materials into fertilizer
Tokyo Metropolitan Government Bureau of Sewerage······· Provision of a demonstration field and knowhow on research and development
METAWATER······· Plant construction and operation in general

^*1 An abbreviation of the Breakthrough by Dynamic Approach in Sewage High Technology Project, a demonstration project conducted by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) to accelerate the research, development, and practical application of new technologies to realize cost reduction and the creation of renewable energy in the sewerage business, as well as to support the overseas expansion of the water business by Japanese companies

^*2 Wastewater containing high concentration of phosphorus generated in biosolid dewatering process