Page 56 - Abstract book - TJSSF-2020

Thailand – Japan Student Science Fair 2020 (TJ-SSF 2020)
“Seeding Innovations through Fostering Thailand – Japan Youth Friendship”

A Study about an Efficient and Low Cost Closed Recirculating System
(For the Future of Aquaculture)

Misawa Haruka , Kato Misaki , Hirata Saeko , Otaki Hiroko
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Advisors: Osawa Ryo , Ushizawa Honoka
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Fukushima Prefectural Fukushima High School
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Abstract
The Great East Japan Earthquake occurred in 2011. The marine products industry in Fukushima was
badly damaged by the Fukushima nuclear power plant accident. Therefore, we have focused on a closed
recirculating system. This type of farming enables us to farm fish on land. We have studied it from the
viewpoints of filtration, water and food. It has been successful. However, if we applied all these results
for the aquaculture system, it would cost a lot. Especially, conventional filter material is expensive.
Then we thought that we should use another filter material to reduce the cost. This is now under
evaluation. We will report this result in the full paper. Also, from February 2020, we are constructing a
new aquaculture system, which is efficient and low cost. From April, we will start farming mainly eels
with the system that we make. The initial cost of our system on a 15 ton tank scale is 6 million yen,
while the initial cost of aquaculture systems used by ordinary companies on a 15 ton tank scale is 7
million yen. Comparing our system with the ordinary system, our system could be said to be a low-
cost-system. From the year 2021, we would start providing our system to people who want to start fish
farming as a business with our system. In this way, we would like to boost the marine products industry
in Japan, and spread this aquaculture system to the world.

Keywords: aquaculture, closed recirculating system, low cost, fish, filter material

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