The History of the Ehime Blend and Its Current Status in the 2020s

The History of the Ehime Blend and Its Current Status in the 2020s Located on the coast of the Seto Inland Sea, Ehime Prefecture began implementing its own unique environmental measures to prevent water pollution at an early stage. In particular, the “Ehime Blend”—developed as a community-based water purification technology—is a culture solution created by the Prefectural Industrial Technology Center by combining microorganisms such as yeast, lactic acid bacteria, and natto bacteria. Developed in the early 2000s, "Ehime Blend" was adopted primarily by food processing companies and fisheries businesses within the prefecture, where its effectiveness in reducing sludge and purifying wastewater was demonstrated. The first demonstration experiment was conducted in 2000 at a food processing cooperative in Yawatahama City. It reduced sludge generation in the wastewater treatment process by 30–40% and achieved annual cost savings of approximately 7.72 million yen. It also suppressed odors during the composting process, leading to increased demand from nearby farmers and yielding other community-focused benefits. This initiative attracted attention throughout Ehime Prefecture and marked a significant step toward promoting Ehime’s environmental technologies and industrial development. Widespread Adoption and Evolution in the 2020s As the 2020s began, the scope of application for “Ehime Blend” expanded further, with its adoption progressing in the food processing and fisheries industries across the prefecture, including in Matsuyama City and Uwajima City. At a food processing company in Matsuyama City, the use of “Ehime Blend” in the wastewater treatment process reduced sludge generation by 35% and achieved annual cost savings of approximately 8 million yen. Additionally, a seafood processing company in Uwajima City has successfully purified wastewater and suppressed odors, contributing to improved coexistence with local residents. Applications in the agricultural sector are also progressing. An agricultural corporation in Seiyo City uses "Ehime Blend" in its compost production process. This has significantly reduced odors, leading to a 20% increase in demand for compost from neighboring farmers and generating approximately 5 million yen in additional annual revenue. Balancing Environmental Conservation and Economic Benefits The environmental technology provided by "Ehime Blend" has yielded results for many companies in Ehime Prefecture in reducing wastewater treatment costs and suppressing sludge generation, thereby contributing to the reduction of environmental impact. Specific results include an average reduction in sludge of 30–40% and annual cost savings of 5 to 8 million yen, making it an indispensable environmental technology for the local industry. Future Prospects Ehime Prefecture continues to conduct research and development on “Ehime Blend” with the aim of further industrial applications and widespread adoption. In the agricultural sector, it is expected to be used as a soil conditioner and as an odor suppressant in the livestock industry. The prefecture is also strengthening collaboration with companies both within and outside the prefecture, continuing efforts to reduce environmental impact through the advancement and dissemination of this technology. In this way, through more than 20 years of technological accumulation and application, "Ehime Blend" plays a vital role in Ehime Prefecture’s environmental conservation and industrial promotion, continuing to make significant contributions to the sustainable development of the local economy and natural environment.