vol.12 Use the sewage from the sewage treatment plant to cultivate Euglena. | Sustainable Times by Euglena | Sustainable Times by euglena

euglena Project


Of sewage treatment plant
Utilizing sewage,
Incubate Euglena.

Challenge of Ministry of Land, Infrastructure, Transport and Tourism B-DASH project

2015.04 – 2017.03


Was entrusted after returning to the United States
Euglena culture in a sewage treatment plant

In October 2015, when Hideyuki Suzuki returned from research on euglena culture for biofuels in the United States, he received the following instructions from the research director, Kengo Suzuki.

"Mr. Hide. I will appoint him as the leader of a project to study whether Euglena can be cultivated as valuable resources such as feed and fertilizer using sewage and wastewater from Saga's sewage treatment facility."

Hideyuki Suzuki was entrusted with the CO generated in the process of sewage treatment. 2 And, utilizing nitrogen and phosphorus in the sewage, Euglena * To establish a culture method for. Euglena Co., Ltd., Saga City, Toshiba, Nihon Suido Consultants, and Japan Sewage Works Agency. It was adopted. * Microalgae such as Euglena

"If you can cultivate Euglena in sewage, you can effectively utilize the resources that would otherwise be discarded without being used ... Please let me do it!"

In April 2016, Hideyuki Suzuki and team member Takeuchi were dispatched to Saga, and a full-scale experiment at the Saga City Sewage Purification Center began. Until the start of the experiment, Toshiba was in charge of the installation work of the equipment that separates and recovers CO 2 emitted from the sewage treatment plant, and Euglena was in charge of the equipment work for culturing Euglena.

Toshiba's CO 2 separation and recovery device (left) and aquarium for culturing Euglena (right)

Sewage treatment plants are a treasure trove of resources, resources to be discarded
Utilized Euglena culture demonstration experiment

However, for the first three months, Hideyuki Suzuki has a headache.

"The sewage is cloudy and I can't cultivate Euglena well ..."

As a premise, Euglena grows by photosynthesis, so turbid water such as sewage does not allow light to pass through and is not suitable for culture. Culturing Euglena using sewage is the first attempt by Euglena, and we cooperated with team member Takeuchi, such as diluting sewage without using it as it is and adding insufficient nutrients. However, we proceeded with the examination of the conditions, and from July 2016, we managed to cultivate Euglena.

The project started to go smoothly, but the fact that he was in charge of a large national project sometimes put a lot of pressure on Hideyuki Suzuki.
Even so, nearby, Saga City is working on advanced activities such as the production of compost sludge at sewage treatment plants, the use of liquid fertilizer for sewage treatment water, and the use of fisheries for seaweed cultivation, "Let's do anything!" When I saw it, I was inspired by "I have to do my best". In addition, as I proceeded with the experiment, I realized that the knowledge obtained here would lead to a reduction in the production cost of Euglena as a raw material for biofuel in the future.

At Saga City Sewage Purification Center (Left: Suzuki)

In February 2017, as a result of repeated research, even the culture using CO 2 finally recovered in the process of sewage treatment and nitrogen and phosphorus in the sewage is the same as the normal culture using clean water. We succeeded in growing green worms efficiently. In other words, it was demonstrated that even if Euglena is cultivated using sewage and wastewater from a sewage treatment facility, it is possible to significantly reduce the culturing cost compared to the past without reducing the production volume. Furthermore, it was found that the effect of reducing the load on the sewage treatment plant can be expected by using nitrogen and phosphorus in the sewage for culturing Euglena.

In response to this result, Euglena is continuing to verify how the Euglena produced in this project can be used industrially for feed and fertilizer.

Currently, Hideyuki Suzuki, as the chief of the Biofuel Development Division, is working on research and development of Euglena production for biofuel raw materials toward the realization of paid biofuel flights in 2020.
To realize the feelings I had when I joined the company, "I want to do research and development that can be returned to many people," and to leave a better future for the next generation.

Posted in January 2018

Euglena Data

-About the business model of Euglena culture at a sewage treatment plant-


Biofuel Development Department
Biofuel Development Section Chief
Hideyuki Suzuki

Joined the company in October 2013. Euglena 's genetically modified product in the United States at the Research Planning and Development Division of the Research and Development Department, a euglena culture project using sewage will be carried out from October 2015. Currently, he is promoting research as a section chief of the Biofuel Development Division.

"Our surroundings are full of opportunities to recycle waste depending on our wits. Keeping the spirit of abandoning preconceptions and trying something a little different gives rise to the idea of rejuvenation. I believe

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Cultivate Euglena using sewage in sewage treatment plants.


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Start all-year-round recruitment.


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Discover the possibilities.


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popularize it


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derived from Euglena
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