ナノバブル発生装置効果検証in八景島シーパラダイス 中間報告
環境の移り変わりにより、以前はきれいだった海、川、池にヘドロがたまり、
生物の住めない水になってしまったと言う話を良く耳にします。
未来を生きる子供たちのために、少しでも住みよい地球を残したい。
そのような思いで水質の浄化に取り組んでいます。
ナノバブル発生装置はそのためのものです。
・海、池、川をきれいにしたい。
・以前のような生き物が多く住む水に戻したい。
・ヘドロからでる臭いを抑えたい
などお考えの方、公共、民間問わず様々なご相談に乗らせて頂いております。
お気軽にご連絡下さい。
期待できる効果
海域浄化、生物多様化、汚泥減容、ヘドロ処理、 貧酸素の改善、閉鎖水域の改善、微生物活用、有機物分解
２０１３～２０１４／January Bio Activating Bubble Experiment report
In June 2013, Anzai Kantetsu Co., LTD. installed an oxygenated nanobubble generator at the
bottom of Tokyo Bay (~8m) near Yokohama's Kanazawa ward. For a period of 2.5 months, the device continually
operated while our team of researchers investigated the effects of oxygenated nanobubbles on the immediate
surrounding benthic environment. Throughout the duration of this research, three specific areas of inhabitance
were monitored and sampled for both biological diversity and population size in respect to benthos.
1. Sample area within the nanobubble piping perimeter (henceforth referred to as the 0m point)
2. Sample area 5m away from the device
3. Sample area 30m away from the device
Control samples were taken immediately prior to the installation of the nanobubble generator and the first
sampling for the experiment occurred one month after installation in early July. This sampling identified a
significant increase in both population size and biodiversity at the 0m and 5m observation points. At the 30m
observation point, both population size and biodiversity decreased. This decrease was expected as oceanic dissolved
oxygen percentages decrease in the summer due to the increase in water temperature. This temperature increase and the
resulting change in dissolved oxygen levels creates an aquatic environment that is very harsh for aerobic organisms and
affects their ability to survive. Despite this regularly occurring temperature and oxygen level fluctuation, both the 0m
and 5m points showed increases for both variables.
In August, a second sampling was conducted. The results for the 0m and 5m observation points showed further increases in
both population size and biodiversity. The 30m results were similar to the previous month's observation.
At the end of August, operation of the oxygenated nanobubble generator was ceased and in the middle of September, the final
sampling was conducted. Both the 0m and 5m observation points showed significant decreases in population size and benthos biodiversity.
The 30m observation point continued to decrease, but its change was not as significant as what occurred at the 0m and 5m observation
points between observation #2 and #3.
This decrease in benthos population size and biodiversity for observation #3 is a direct result of the decreased oxygen levels at
the experiment's sampling points. When the water temperature is above 20°C, it becomes difficult for benthos to survive due to oxygen
deprivation. By introducing oxygenated nanobubbles into the target environment, dissolved oxygen content increases creating an environment
that is more suitable for benthos. Bacteria in the area is then able to more effectively break down oxygen-depleted, but nutritionally rich
waste in the area resulting in an increased population. As this organism population base increase occurs, the ecological pyramid is able to
gradually stabilize and recover its natural biodiversity.
