About recycling phosphorus collection business from sewage sludge and approach to fertilizer

In fiscal 2022, in collaboration with Motoichi and Tsukishima JFE Aqua Solutions Co., Ltd., the B-DASH Project has developed a technology to efficiently collect phosphorus from sewage sludge. ※It was adopted on February 28, 2023 (the second supplementary budget for fiscal 2022). The demonstration facility was completed on March 27, 2024, and the collection of recycled phosphorus has begun on a trial basis.
※B-DASH Project: The Ministry of Land, Infrastructure, Transport and Tourism (MLIT). By accelerating R&D and practical application of new technologies, we will reduce costs and create renewable energy in the sewerage business. At the same time, we will support the overseas expansion of the water business by Japanese companies.

（１） Facility installation location
Hokubu Sludge Treatment Plant (1-6-1 Suehirocho, Tsurumi-ku)
（２） Generation size
Amount of dehydrated filter: Approx. 150m3/day (approx. 55,000m3/year)
Regenerative phosphorus production: Approx. 110kg/day (approx. 40t/year)

In July 2023, we concluded a partnership agreement with JA Yokohama and JA Zenno Kanagawa to promote the development and manufacture of fertilizers containing recovered phosphorus and to promote the use of distribution mainly in the city.

The recovered recycled Lin has registered fertilizer with the Ministry of Agriculture, Forestry and Fisheries so that it can be used as a raw material for fertilizer.
In the future, we will manufacture recycled phosphorus fertilizers containing nitrogen, phosphoric acid, and potassium in a well-balanced manner so that they can be applied to a wide range of crops such as vegetables and flowers, and conduct trial cultivation at JA Yokohama's field.

Registration certificate for recycled phosphorus

The collected recycled phosphorus was named "Hama Touring Lin" as a recycled Lin born in Yokohama.
It is a coined word that combines "phosphor" with the appearance of being born and regenerated from the resources of Yokohama citizens in the word "circle".
The PR logo below is based on the infinite mark as an image of regeneration, circulation, and circular, and is based on the motif of Futaba, a plant that sprouts and grows from the regenerated phosphorus.

In this facility, we accept facility tours only for group tours.
Visit available date and time (other than agricultural-related organizations): Monday to Friday (excluding holidays) 10:00 am to 16:00 pm
Visit available date and time (agriculture-related organizations): Wednesday and Thursday (excluding holidays) 1:00 pm-3:00 pm-
※Targets are administrative agencies, private companies, research institutions, agriculture-related organizations, sewerage-related organizations, and educational institutions.
※The tour will be one group per frame, with a basic 10 people / group.
　In the case of a tour with a large number of people, the information will be divided into multiple groups.
※The latest information on how to visit is always posted on this website.

If you would like to visit the facility, please submit the following application form.
Phosphorus collection facility tour application (Excel: 15KB)
[Submission address] Management Promotion Section, Sewerage and Rivers Bureau Management Promotion Department (in charge of technology development)
　Email： [email protected]

If you have any questions, please contact us at the bottom of the page.

We will verify the effect of fertilizer with recycled phosphorus through planting tests for GREEN x EXPO 2027 (October 31, 2024).
Start of fertilizer with sewage regeneration phosphorus! We will provide recycled Lin to JA Agricultural Kanagawa and start fertilizer production (August 27, 2024).
Phosphorus recovery facility has been completed for the conversion of sewage sludge into fertilizer!　(March 18, 2024)
Yokohama City, JA Yokohama and JA All Farm Kanagawa will conclude a cooperation agreement to promote the use of fertilizer for sewage regeneration phosphorus (July 21, 2023).
Sewage sludge transforms into a valuable resource! Started using fertilizers using phosphorus collected from the city's resource "sewage sludge" (March 23, 2023)