Nano or ultrafine bubbles have a diameter of less than 50 microns and unique physical characteristics that differ from other types of bubbles.
They are too small to rise up through liquid and get compressed by negative ions at the gas-liquid interface so don’t combine to form larger bubbles. This means they remain in liquid for a long time. They then shrink leaving their entire gas load in the liquid.

Nanobubbles were first discovered in 1894 when the Royal Navy was testing a high speed torpedo boat. Lord Rayleigh, the legendary classical physicist, investigated further and discovered that micro nanobubbles collapsed and generated high levels of heat and pressure.

Nanobubbles have previously been produced in a variety of cumbersome and expensive ways. However now, a new, unique carbon ceramic technology, which works by osmosis, supersedes everything that has gone before. Using only a fraction of the energy required by other methods, this technology, invented by Nanobubble Solutions Limited (NBS) co-owner and company director Satoshi Anzai, can be used for a far greater number of applications and produces double the number of bubbles achieved by any other system.

The material/units
Carbon ceramic looks and feels like a smooth stone. Gas is placed into the diffuser head at 29psi pressure (or less) and exits from the whole surface of the diffuser head by osmosis. The gas is picked up, as nanobubbles, as the liquid passes through the unit. The standard range of in-Line generators come in different sizes to accommodate different volumes of liquid in order to guarantee the 90% gas transfer rate at that scale of operation. Diffuser heads are either small nozzle type (1 below) or plate type (2 below). We will also design to order and offer rotary/propeller type diffusers that operate directly in liquid (3 below).

Benefits of this technology
works by osmosis with no mechanical parts
can place any gas into any liquid
gas remains in liquid and in ONE PASS guarantees
a 90% gas transfer/saturation rate (double any other system)
works on very low pressure, maximum 29psi
operational in high temperatures
extremely low energy requirement so outstanding cost effectiveness
can place nanobubbles into liquids of high viscosity (think mayonnaise)
can easily up-size to large scale production without increase in pressure or energy
in-line, rotary/propeller and ultrasonic methods of delivery –
making nanobubbles available to a far greater number of industries
(for example pharmaceutical and mining/ferric leaching)
replaces or reduces need to use chemicals, so more environmentally friendly
electrical charge and high frequency induction heating allowed

Patent protection
Developed over a number of years, Mr Anzai has successfully registered patents in Japan, the US (no 8,919,747 B2) and Europe for his carbon ceramic technology. Nanobubble Solutions Limited (NSL), is part-owned by Mr Anzai and he is also a director of the company which has secured the right to develop and market the technology in the USA, Europe and the Middle East along with certain other English speaking territories around the world.

THE ABOVE SUMMARY WAS SOURCED FROM: http://www.nanobubblesolutions.com/tech/tech.php



Nanobubbles generator implementation for waste disposal, on this website, represents only one aspect of the technology’s many beneficial uses. This technology has proven potential for application and utilization in a diverse array of industrial sectors, such as pharmaceuticals and cosmetics, hydroculture, food production, defense and military hardware and filtration systems. The nanobubbles technology developed at Anzai Kantetsu Co., LTD is not only easy and cost-efficient in regards to its implementation and operation, but thanks to its unique design can help make significant contributions to your organization’s environmental sustainability and conservation practices.

Oxygenated nanobubbles technology is a research area in which Japan is at the forefront of development. Presently, there are various established methods for nanobubbles production, but only Anzai Kantetsu Co., LTD. specializes in low-cost implementation through both simple and cost-efficient hardware and has an established record for using said technology in active ocean purification projects.

In regions with large populations, a critical problem that must be addressed is biological and chemical waste disposal. Many of the methods currently used to address this problem are costly, logistically complex, and inefficient, but this is an area where oxygenated nanobubbles technology particularly excels. As a consequence of contemporary waste disposal processes, chemical sludge often becomes oxygen-depleted prior to disposal. Without oxygen, bacteria has a difficult time breaking down the waste and as more and more accumulates, it only increases the negative impact it has on the environment.

By introducing oxygenated nanobubbles into a target area, marine bacteria is able to more effectively process the waste and repurpose it for its nutritional benefits. This results in a biological chain reaction that can significantly increase biodiversity and organism population sizes in the local environment. By using our firm’s nanobubbles technology and hardware, implementers will be able to significantly contribute to environmental restoration and sustainability efforts in their immediate area.

Use of sterilization property of ultrafine bubble

When ultrafine bubbles contract and then collapse they generate active oxygen. The sterilization property can also be improved via use of a gas such as ozone. Active oxygen does not have a long lifespan, and results in no toxic materials like trihalomethane. Sterilization using ultrafine bubbles is an extremely safe and harmless method to use.


This method has received a high level of recognition in many practical fields.

Eliminating noroviruses from oyster has been an important issue in the oyster cultivation business. Washing oysters using ultrafine bubbles including ozone two days prior to shipment eliminates any noroviruses and results in beautiful cream-colored oysters.

Before ozone nanobubbles treatment (left) and after ozone nanobubbles treatment (right)

*The National Institute of Advanced Industrial Science and Technology
Source: Research paper prepared by Professor Takahashi.

Use of the cleaning property of ultrafine bubbles

Ultrafine bubble technology can be effectively used to wash away oil via ions that are present at the interface.

♦Bubble cleaning



Cleaning via use of ultrafine bubbles is environmentally friendly and harmless and does not require any chemicals.

Use of the living body activation property of ultrafine bubble

Ultrafine bubbles increases the vitality of cells. Ultrafine bubbles have been proved to cure carp herpes. The therapeutic effect with regard to gum disease and infection and anti-inflammatory effect of ultrafine bubbles have also been confirmed. Even though an unbelievable combination, all of them are growing without any problems. Water containing a large amount of ultrafine oxygen bubbles with salinity close to seawater can be used to breed deep-sea fishes. The photos show phalaenopsis, iwana mountain trout, rainbow trout, sweet fish, and Channel rockfish (deep-sea fish that live 350 to 1,300 meters below the surface of the sea) at a water salinity of 3%.


Use of the growth promotion property of ultrafine bubble

Ultrafine bubble technology can be used to promote the growth of organisms. This technology is gaining attention in the agriculture, marine industry, and medical fields.

Promotion of plant growth


Ultrafine bubble technology can be used to promote the growth of plants, and also increases their sugar content.。

Promotion of scampi growth


Ultrafine bubble technology can be used to promote the growth of plants, and also increases their sugar content.

*Source: Research report prepared by Professor Himuro,
Ariake National College of Technology

A number of field researchers have confirmed the effectiveness of ultrafine bubbles when used in the agriculture and marine industries.
However, the high running cost, the low durability of devices, and high initial investment have hindered many people from using the method.
Our ultrafine bubble generator does away with those problems.
Environmentally friendly ultrafine bubble technology can be used to solve many current problems.

Use of the cell protection property of ultrafine bubble

Ultrafine bubbles are present in every hole and corner of the cells of organisms, activate them, and at the same time prevent the structure of cells from breaking down when frozen.

Living oysters frozen at minus 20 degrees Celsius the previous day come alive again after being thawed in seawater at room temperature.
The cells of oysters cultivated in water containing ultrafine bubbles for two days retain their shape even after the oyster was frozen.

*Source: Research paper prepared by Professor Masayoshi Takahashi,
The National Institute of Advanced Industrial Science and Technology

The abovementioned test has been repeated a number of times and the effect proven. This technology could even result in a distribution revolution with respect to perishable fresh food. Fresh and even living food can be easily and directly delivered to consumers.

Use of the heat transfer property of ultrafine bubble

The many vapor and liquid interfaces of ultrafine bubbles aid in more effective heat transfer. The structure below shows a direct heat type ultrafine bubble generator, for which we have applied for a patent for. It can be used to very efficiently increase the temperature of the liquid phase. In addition, cooling the vapor phase supplied enables the temperature of the liquid phase to be more effectively decreased.



Use of the vaporization promotion property of ultrafine bubble

Micro nanobubbles promote water vaporization. Ultrafine bubbles, whose diameter is less than 100 microns when forming, self-contract because ions present at the interface. The bubbles then contract to nano-level size and release energy before collapsing.
The energy released at that time then creates ions with sterilization properties (OH-) and promote vaporization.

This cooling tower structure is actually very simple. Water is sprayed from the above and comes in contact with the filler, and the wind then vaporizes the water. During that process the latent heat of the vaporization cools the water. Easier vaporization of water is the most effective way of improving efficiency.

This is the most frequently used method for cooling in the world!

Use of the vaporization promotion property of ultrafine bubble

Eliminates water pollution and ensures more oxygen-rich water

Use of the environmental purification property of ultrafine bubble



Environmental improvement


Application of ultrafine bubble technology in the medical field

Ultrafine bubble technology can potentially be used in a new type of medical treatment.

ナノバブルと医療◊ Many medical science doctors have high expectations of ultrafine bubble technology. A variety of positive effects in a number of applications have been confirmed, and in including medical treatment for carcinoma of the colon and rectum, cancer of the esophagus, cancer of the larynx, skin cancer, gum disease, arterial sclerosis, infections, artificial dialysis, and barium meal transplantation.

During the war ozone water was considered a magic lifesaver. Ozone water can now easily be created using ultrafine bubble technology. In addition, civilian use of technology such as oxygenated water containing nanobubbles and nanobubbles baths is increasing in popularity. The availability of simple water purification systems could help save up to 600 million people merely in eastern Asia. Ultrafine bubble technology could thus doubly contribute to people’s health by providing preventive measures and countermeasures.


Oxygen nanobubbles prevent activated macrophage from adhering to endothelial cells.
The arrow shows activated macrophage adhering to endothelial cells.

Purification of Suwa Lake Project

The history of purification of Lake Suwa is very long and scientists challenge began in 1918

The beginning of pollution

① Contamination became serious due to organic matter, heavy metals, eutrophication

② Pollutants consume oxygen, the lake bottom becomes poor oxygen, shellfish living on the lake bottom and benthos decrease, the ecological balance collapsed

③ Due to the influx of nutrient substances, phytoplankton increases sharply and the deterioration of the environment becomes serious

Recovery of environment by nanobubbles

Ⅰ: We were seeking ways to efficiently supply oxygen to the lake bottom

Ⅱ: Nano bubbles diffuse horizontally inthe water stream

Ⅲ: Oxygen is supplied to the bottom of the lake, so that benthic organisms are activated and prey species of phytoplankton are suppressed, and the occurrence of large bloom of blue green algae is suppressed.

Ⅳ: As the amount of organic matter on the bottom of the lake decreases, shellfish and other habitats are encouraged, and recovery of the environment accelerates.

Ⅴ: Revive the rich environment where diversity of living things coexist





Maintaining the landfill environment Tokushima Airport


The closed ocean becomes a harsh environment, the living things dying out and giving off a bad smell, but it is possible to landfill while maintaining a better environment than the nanobubble

Equipment list : AZ-FB150A×1unit/2.2kw Air compressor×1unit 7.5kw Pump×1unit

Maintaining the environment of historic buildings

Byoudouin(World Heritage) AZ-FB50A/S×3units


Enkakuji AZ-FB32A/S×1unit


Hibiyabori/The Imperial Palace AZ-FB50A/L+OxygenGenerator×1unit


Approach to marine pollution







ABOVE ARTICLE SOURCED FROM: http://anzaimcs.com/en/main/examplenanobubble.html