After more than a month of piloting, in addition to the ability to handle odors, Japan's nano-bioreactor technology also brought significant changes to To Lich River, Hanoi.
Specifically, at Point B1, 50m away from Hoang Quoc Viet Bridge, near the shore of Buoi road, the mud thickness drops to only 13cm. At C1 point, 110m from Hoang Quoc Viet bridge, this figure is 19cm.
In addition, so that people can see more visibly the technology can decompose the organic bottom mud layer into CO2 and H 2 O water, Japanese experts and Japan Vietnam Environment Improvement Joint Stock Company ( JVE), the relevant units of Hanoi organized a demonstration area to treat organic sludge disintegration.
Demonstration area for sludge treatment before applying nanotechnology.
This area is installed with floating corrugated wall (mud area higher than water level) and nano spraying system, waste water from outside to inside the floating area, creating flow in the inner area.
Demonstration area handles sludge 2 weeks after applying technology.
According to the results of Japanese experts announced on 4/7, after more than 2 weeks of pilot demonstration area, the thickness of mud in the treatment area reduced significantly, while the dissolved oxygen content of DO inside the treatment area A strong increase in environment is a very good environment for fish and aquatic development.
In sensory sense, the clarity of the water can be seen clearly, the bottom of the decomposed mud can be seen. This demonstrates the effectiveness of nanotechnology - the bioreactor. Because normal water is not nano water and bioreactor material, the mud remains black and doesn't decompose.
Dr. Kubo Jun, Japanese expert measures dissolved oxygen content.
According to Dr. Tadashi Yamamura, UN expert on environment, President of Japan Trade Promotion - Environment Organization, this technology not only has the ability to treat and clean water quality but also works to dissolve substances. causing pollution, sludge at the bottom, sustainable effectiveness of the cycle of 25 years without further handling. Instead of having to dredge rivers and lakes on a yearly basis, this technology helps only one time but long-term effectiveness, cycle up to 25 years.
Projects have been implemented in rivers in Japan, India, China . since 1994, but water quality is maintained and rivers and lakes are able to 'clean' themselves and decompose. Organic mud layer in the bottom layer without mechanical dredging, contributing to protecting water resources.