国連が採用した「命の水」をつくる技術　”低コストでシンプル”日本から世界に広がる貯水タンク「ためとっと」

A donation ceremony was held at the Fukuoka Botanical Garden to celebrate the completion of an underground rainwater storage tank developed by a Fukuoka City construction company. The tank, named "Tametotto," is being installed through UN-Habitat in countries in Asia and Africa with limited water resources. 45 Tons of Water Stored Under the Lawn On the 11th, the underground rainwater storage tank "Tametotto" was unveiled at the Fukuoka Botanical Garden. Although it's installed underground beneath the lawn, it can store a whopping 45 tons of water. Developed by a Fukuoka City Construction Company "Tametotto" is an underground rainwater storage tank developed in collaboration with Kyushu University by the Fukuoka City construction company Daiken. Installation begins with digging the ground. Excavation took place at the Botanical Garden in May. Daiken President Norichika Matsuo (55) said, "We're currently excavating, digging a hole. We'll be storing water in a hole measuring 11 meters wide, 5 meters long, and a little over 2 meters deep." A waterproof sheet will be laid over the excavated area, creating a space to store water. Small crushed rocks will then be added. Water as clear as tap water When water is stored in the space filled with the rocks, the microorganisms living between the stones will eat and break down the impurities, resulting in water as clear as tap water. President Norichika Matsuo said, "We plan to create two tanks this time. One will store water that rains on the roof, and the other will store groundwater from this flower bed. We plan to store water from the roof and water from above separately." The aboveground area can also be used, for example, in a parking lot. The surface will be backfilled, so the underground tank will not be visible. President Norichika Matsuo said, "It's completely invisible. For example, the top can be used for parking and various other purposes, so it can be used just like normal." "Low-cost and easy to install." This rainwater tank, "Tametotto," was adopted by UN-Habitat in 2013 and has already been installed in developing countries in Asia and Africa. Yukiyo Hoshino, Assistant Director of UN-Habitat Fukuoka (Asia-Pacific Region), said, "We chose it because of its low cost, ease of construction, and the fact that it can be built together with local villagers and townspeople, even if they don't have advanced civil engineering skills. And most importantly, its ability to collect large amounts of rainwater at once." Adopted by the UN, it has been installed in 23 locations worldwide. It was first installed in Laos. Since there was no running water in the area, it was built for drinking water. Then in Vietnam. It was built in collaboration with local residents. And then in Africa. It was installed in Kakuma, a refugee camp in Kenya. Rainwater that falls on the roof of a community center is collected in the rain gutters and then stored in the tank. President Norichika Matsuo: "This project creates jobs. Because we feel that we built it, it inspires the people to cherish it even after we're gone. It's not just a case of building it and then being finished, but we want it to continue to be cherished." Last year, we installed one in Nepal, and in March of this year, we installed one in Myanmar. Including those installed in collaboration with international NGOs, we have installed them in 23 locations in six countries, providing precious water to local people. An opportunity to learn about the "abundant water situation" President Norichika Matsuo: "Japan is one of the world's most water-rich countries, but even this blessed life can be hindered by minor weather changes or abnormal weather, and it's possible for the rain to stop. Or, the water supply can be cut off by an earthquake. If people are conscious of storing water regularly, their lives will be enriched, and I hope they will be aware of that." The water from the "Tametotto" donated to the botanical garden this time to commemorate Daiken's 50th anniversary will be used to water the plants. "The Fukuoka City Botanical Gardens, actually, were once the site of a water purification plant. I believe that the gardens are deeply connected to water, so I hope that this system will help residents learn about the importance of water," said Tomoko Tachibana, director of the Fukuoka City Botanical Gardens. The "Tametotto" installed at the botanical gardens will not only help people learn about Japan's abundant water situation, which we don't usually think about, but also raise awareness of the importance of storing water. For more details, check out NEWS DIG! ↓ https://newsdig.tbs.co.jp/articles/rk...