A structure adapted to be at least partially immersed in a liquid to be purified, in particular sewage, the structure comprising: a hollow body provided with at least one inlet opening and at least one outlet opening for the liquid; first dispensing means adapted to dispense an oxygen-containing gas, for example air, arranged so as to generate a flow of fluid, in particular a mixture of sewage and said gas, towards said at least one outlet opening; second dispensing means adapted to dispense an oxygen-containing gas, for example air, arranged so as to generate a flow of fluid, in particular a mixture of sewage and said gas, outside the hollow body.

The device includes a vessel to be filled with a mixture of water and a component producing foam, where the vessel comprises a device for blowing air into the mixture to produce foam. It is provided according to the disclosure that the device comprises at least two vessels to be filled with the mixture arranged one above the other in a vertical direction in tiers, where the vessels comprise the device for blowing air into the mixture to produce foam, where the vessels are open towards an outlet region such that the foam produced in the vessels is merged in the outlet region.

The invention comprises a carrier used in an aeration assembly to assist a user in dispensing wine from a box through a spigot to flow into an aeration device and into a drinking vessel.

A bubble generator including a container having a side wall and a top wall defining a cavity. An insert is located within the cavity defining a gas path with a trap portion. The gas path being in communication with an exit in the container. The cavity including an opening receiving a gas accumulating within the cavity, the gas path allowing the accumulating gas to escape through the exit once the accumulating gas reaches a predetermined level proximate the trap portion.

A liquid aeration system includes an air compressor system and a diffuser. The air compressor system includes an air intake manifold, an air compressor, and a compressor inlet line. The compressor inlet line fluidly connects the air intake manifold and the suction inlet of the air compressor. The compressor suctions air from the air intake manifold through at least the suction inlet hose. The compressor compresses the air into compressed air that is supplied to the diffuser.

A combined water aeration and filtration unit (WAFU), having a tank with a vent section at a top of said WAFU and above an aeration section above a filtration section at a bottom of said WAFU. The vent section has one or more demisters and one or more vents for detraining water and providing a dry air exit from said WAFU. The air section has a water inlet ending in a spray nozzle near the top of the aeration section to turn incoming dirty water into water droplets and a forced air blower on a side or top of the aeration section for blowing air through said water droplets in rate sufficient to remove volatile organic compounds and precipitate manganese and iron. The aeration section also has one or more annular rings or partially annular baffles on an inside wall of the tank to force water from said inside wall into an interior of the tank. Thus, no water escapes aeration. A backwash collection trough and backwash water outlet are positioned above the filtration section for removing dirty backwash water from the unit. The filtration section has one or more filters therein and a drain and clean water outlet near its bottom for egress of clean water from said WAFU.

An aerator for treating wastewater is configured to produce air bubbles to mix and circulate wastewater within a treatment facility. Additionally, the aerator is configured to inject additive into the wastewater at the same time as the air bubbles are being produced, so that roiling of the air bubbles and/or circulation induced by the air bubbles rising within the water column facilitates mixing of the additive with the wastewater.

A dispensing assembly for cold beverages includes a beverage supply conduit, an opening and closing tap for closing or opening the beverage supply conduit, a beverage dispensing conduit delimiting a fluid passage, a dispensing outlet arranged at the end of the dispensing conduit, an air supply conduit delimiting an air passage. The tap is directly connected to the dispensing outlet by providing a connecting coupling which connects the air supply conduit to the beverage dispensing conduit, the beverage dispensing conduit comprising a Venturi segment between the tap and the outlet in which, by flowing through the Venturi segment, the fluid passage reduces the cross section thereof and then increases the cross section thereof as in a Venturi conduit. An air passage regulating valve is provided in said air supply conduit for regulating the width of the air passage.

This application relates to an ultra fine bubble production apparatus for producing ultra fine bubbles. The apparatus may include a container portion including a liquid and a gas, and a drive portion for pressurization in the container portion. In the pressurization, the time required for the pressure to reach the maximum pressure from the start of the pressurization can be 2.0 milliseconds or less, and the maximum pressure can be 4.00 MPa or more.

An aeration apparatus for aerating water discharged from a hydraulic turbine includes: a manifold disposed within a crown of a runner of the hydraulic turbine; a plurality of radial pipes extending radially from an outer perimeter of the manifold and in fluid communication with the manifold; and one or more air injectors having a first end disposed within an aeration pipe, each of the one or more air injectors having a second end extending into a nozzle at a first end of one of the radial pipes. Rotation of the aeration apparatus resulting from rotation of the runner causes pumping of water from the manifold through the radial pipes past the one or more air injectors, and water flowing past the one or more air injectors causes air to become entrained in the water. The radial pipes discharge the water and entrained air from the aeration apparatus.