◾ What is Ultra Fine Bubble (UFB)?
◾ Overview of Ultra Fine Bubble Technology
◾ About Ultra Fine Bubble Generator
We have succeeded in generating UFB with a single component rather than a large piece of equipment, and have adapted this principle to a shower head for home use, which is the UFB shower head introduced here.
※ According to data measured by the Nano Site System of Quantum Design Japan, an external research organization, 60 to 70 million bubbles per 1 cc of UFB were observed.
It provides sufficient cleaning effect without the use of solvents such as shampoo, soap, or body soap. Ultra Fine Bubbles penetrate even the smallest of pores, adsorbing dirt and leaving it clean, and their high cleaning power has been proven, making them safe for use by anyone, including those with sensitive skin or those who are concerned about sebum or dirt! The product is safe for use by all.
② Odorless and clean
Even if you wash your hair without solvent, you will find that the hair is very fluffy and odorless after washing. The cleansing and washing effects can be experienced and maintained, as well as preventing diseases caused by dirt adhering to the skin.
③ Time reduction
As mentioned above, no solvents are required, resulting in shorter cleaning times, which leads to shorter bathing times.
④ Equipment set up fortifications do not
The shower head can be easily replaced with a shower head in an ordinary home bathroom, eliminating the need for installation work.
⑤ Economic effect
Since it does not use activated charcoal or tourmaline stones, there is no need to replace the contents, and it can be used semi-permanently as long as the main unit is not broken. Our UFB showerheads can be purchased for less than 30,000 yen, so the hurdle to purchase is low.
In addition, by showering on the mirror every day when taking a bath, you can see how the hot water stains are removed day by day and the mirror becomes shinier and shinier.
Also, the removal of dirt and grime, as well as the cleaning effect, can be confirmed to improve or eliminate plumbing problems.
◾ Improvement of stains after installation in plumbing for toilet flushing
※ Four months after installation in the plumbing for toilet flushing, the yellowing and blackening of the toilet bowl was removed and improved.
3． Example of Ultra Fine Bubble (UFB) Generator
West Nippon Expressway Company Limited (NEXCO West Japan)
◾ Efforts to Advance Highway Maintenance Management Using Ultra Fine Bubbles
West Nippon Expressway Co., Ltd. is utilizing new technologies to enhance expressway maintenance and management and to improve service quality (CS).
◾ Ultra Fine Bubble Water for Toilet Cleaning Initiatives
We view restrooms at rest facilities as an important point of contact with users, and since privatization, we have been focusing on drastic improvement of the restroom environment. As part of these efforts, a new restroom cleaning method using ultra fine bubble water ("UFB water") was launched at rest facilities in the Chugoku region in FY2010, and is being gradually expanded to rest facilities throughout western Japan.
This cleaning method consists of spraying UFB water on the toilet floor with a sprayer and wiping it off with a mop, with the following effects.
Effect ① Significant reduction in overall work time
Compared to conventional washing in water with detergent, the work time is reduced by 30% with light equipment.
Effect ② Significant reduction in water consumption
The amount of water used is significantly reduced, and the amount of detergent used is small, thus reducing the environmental impact to 1/100th of the previous level.
Effect ③ Reduced floor drying time
Floor drying time is reduced by 40%, and customers' feet do not slip.
◾ West Nippon Expressway Company Limited (NEXCO West Japan)
Conventional cleaning methods
◾ Bridge Girder Cleaning Initiatives
Efficient maintenance, repair, and renewal of structures is an important issue for extending the service life
of structures, and it is imperative to do so efficiently within a limited budget. In particular, the aging of
bridges is a problem not only because of damage to bridges caused by larger vehicles and overloading,
but also because of accelerated deterioration due to the adhesion of salt to bridge girders from bridge
joints caused by flying salt on routes passing near the coast and the application of anti-freeze (sodium
chloride) to secure road surfaces during the winter. This has become a problem. Therefore, from the
viewpoint of preventive maintenance, salt is removed by washing bridge girders.
（2）Ultra Fine Bubble Water Cleaning
In bridge girder washing, it has been confirmed that UFB water can remove salt relatively quickly
compared to ordinary water, improving work efficiency. For this reason, we have begun using UFB water
for bridge girder cleaning.
【 Residual salinity diagram 】
◾ Initiatives to Reduce Sludge Volume at Rest Facilities
（1） Purpose of Technology Development
Approximately 40% of the 303 rest facilities in NEXCO West Japan's service area use septic tanks for
treatment. The cost of sludge disposal is increasing every year, and reducing this cost is an urgent issue,
along with reducing road maintenance costs, which will increase in the future. In order to solve this problem, we have been conducting research and development on the application of ozone gas (O3) ultrafine bubble (O3UFB) technology to septic tanks in collaboration with Hiroshima University (Prof. Nishijima) since FY 2013.
（2） Sludge Volume Reduction Mechanism
A. Shear and refine sludge floc
Excess sludge is sucked into the UFB generator and shear stress is applied to the sludge floc together with gas, causing it to become finer.
B. O3UFB penetrates inside the miniaturized sludge floc
The ultrafine bubbles of O3UFB easily penetrate into the sludge floc and accelerate the reaction inside the floc.
◾ Research Status
【 Okuya PA Demonstration Experiment Status 】