The present microbubble generator is a microbubble generator for generating microbubbles in a liquid, including a straight pipe made of porous ceramics, having one end connected to a compressor and the other end blocked, and the straight pipe having an average pore diameter of 1.5 m or less.

A water aeration system powers an air pump held in an encasement with a solar panel mounted directly or indirectly to the encasement or to the mounting pole supporting the encasement above a ground surface. An air conduit directs pumped air to one or more disc diffusers submerged in the body of water to be aerated. The disc diffuser(s) are supported by a floating platform that is suspended from a buoy or float so that the disc diffuser(s) are held at a desired depth below the water surface.

Wastewater treatment systems are disclosed. A wastewater treatment system includes a wastewater conduit disposed in a wastewater treatment vessel, a pump comprising an intake and an outlet connectable to the at least one opening of the wastewater conduit, and an adapter comprising a first end and a second end. The adapter is configured, in a treatment mode, to provide a flow path for wastewater from the wastewater treatment vessel through the adapter and pump to the wastewater conduit. The adapter is further configured to, in a backflush mode, provide a flow path for wastewater through the plurality of nozzles of the wastewater conduit and through the adapter and pump for discharge into the wastewater treatment vessel. Methods of treating wastewater using the system and adapter are disclosed. Methods of retrofitting a wastewater treatment system by providing the adapter are disclosed.

A reactor for gas-liquid mass transfer between a gas and a liquid or slurry includes a tank for receiving the liquid or slurry having a wall; a drive shaft; an upward pumping impeller; and an aerating apparatus disposed above the upward pumping impeller and extending between the drive shaft and the wall of the tank at a first distance (d1) from the drive shaft and at a second distance (d2) from the wall of the tank, the aerating apparatus encircling the drive shaft at least partially. The aerating apparatus has an outward inclined or curved inner surface for directing at least a part of the flow over the inner surface.

Provided is a fine bubble supply device and a fine bubble analyzing system capable of more stably supplying fine bubbles unstable in a liquid.

A fine bubble generating device generates fine bubbles. A retention vessel stores a liquid therein, and an inlet pipe and an outlet pipe of the fine bubbles are connected to the retention vessel. The fine bubbles generated from the fine bubble generating device are introduced into the liquid in the retention vessel through the inlet pipe to be retained in the liquid. The fine bubbles retained in the liquid are led out to a supply destination (fine bubble characteristic evaluation device) through the outlet pipe.

Systems, methods and cartridges for carbonating or otherwise dissolving gas in a precursor liquid, such as water, to form a beverage. A gas source can be provided in a cartridge which is used to generate gas that is dissolved into the precursor liquid. A beverage medium, such as a powdered drink mix or liquid syrup, may be provided in the same, or a separate cartridge as the gas source and mixed with the precursor liquid to form a beverage. The use of one or more cartridges for the gas source and/or beverage medium may make for an easy to use and mess-free system for making sparkling beverages, e.g., in the consumer's home.

A water aeration system powers an air pump held in an encasement with a solar panel mounted directly or indirectly to the encasement or to the mounting pole supporting the encasement above a ground surface. An air conduit directs pumped air to one or more disc diffusers submerged in the body of water to be aerated. The disc diffuser(s) are supported by a floating platform that is suspended from a buoy or float so that the disc diffuser(s) are held at a desired depth below the water surface.

An aerator device, a filter system including an aerator device, and a method of aerating a filter using an aerator device. An aerator device includes a housing having an interior cavity; a first plate in the interior cavity and defining a first cavity portion and a second cavity portion thereof, the first plate being spaced apart from a top wall of the housing to define a first opening through which the first cavity portion and the second cavity portion are in communication; and a second plate defining a first chamber and a second chamber of the second cavity portion, the first chamber and the second chamber being in communication with each other below a lower end of the second plate, the housing having an inlet opening in communication with the first cavity portion, and an outlet opening through the top wall and in communication with the second chamber.

A system includes a vacuum chamber, a vacuum source, and a mixture flow path adapted to be connected to receive the output of a direct steam injector. The vacuum source is operatively connected to a vacuum port of the vacuum chamber, while a product outlet port from the vacuum chamber is adapted to be connected to an arrangement for removing treated product from the vacuum chamber. The mixture flow path includes a flow path segment outside of the vacuum chamber volume and a flow path segment within the vacuum chamber volume. At least some of a surface defining the flow path segment within the vacuum chamber is in substantial thermal communication with one or more cooling structures.

An apparatus configured to result in a penetration of one or more gasses into a dermis of biological skin, wherein the apparatus includes a fluid reservoir configured to contain an amount of a liquid in contact with a portion of a person's skin, and a nanobubble generator configured to inject nanobubbles into the liquid, wherein the nanobubbles contain the one or more gasses. The contact of the liquid containing the nanobubbles with the person's skin results in a cutaneous uptake of a gas contained in the nanobubbies into the person's skin, which may be beneficial in treating an ailment, such as diabetic peripheral neuropathy.