An aerator has a submersible mixing tube having a water inlet and an aerated water outlet. An aspirating tube penetrates the mixing tube between the water inlet and the aerated water outlet, the aspirating tube having an air outlet introducing air into the mixing tube and an air inlet drawing in air from atmosphere above a water surface. The mixing tube has an outboard motor lower unit engagement to engage a lower unit of an outboard motor in use such that a propeller thereof locates entirely within the mixing tube with a midsection of the outboard motor extending from the engagement. As such, the propeller of the outboard motor lower unit thrusts water past the air inlet thereby creating suction at the inlet to draw air via the mixing tube to mix with the water to expel a plume of aerated water.

A microbubble generation module includes a first net, a second net, and a buffering protection device. The first net is provided with a plurality of first through holes and at least one air intake through hole besides to the plurality of first through holes. The second net is arranged on the first net, and provided with a plurality of second through holes. A body accommodates the first net and the second net. The first through hole and the second through hole communicate with each other to form a fluid communicating channel. The air intake through hole is in communication with the fluid communicating channel. The air intake through hole promotes a generation of microbubbles at communicating parts of the plurality of first through holes and the plurality of second through holes when a liquid passes through the fluid communicating channels.

An apparatus has a plurality of gas transfer membranes. The apparatus floats in water with the membranes submerged in the water. To treat the water, a gas is supplied to the membranes and is transferred to a biofilm supported on the membranes or to the water. Gas is also used to supply mixing or membrane scouring bubbles to the water. The mixing or scouring bubbles can be provided by a cyclic aeration or other gas supply system, which optionally provides gas at a variable pressure to the membranes in parallel or series with an aerator. Condensates can be removed from the membranes, and exhaust gasses from the membranes can be monitored, optionally through one or more dedicated pipes.

An aerator for aerating a liquid as the liquid is being poured from a container includes an aerator body configured to be at least partially inserted into the container. The body includes an inlet, an outlet, and a flow control chamber disposed between the inlet and the outlet. A flow control element is movably disposed in the flow control chamber between a first position where the flow control element is spaced away from a stop and a second position where the flow control element engages the stop. The flow control chamber communicates with the outlet when the flow control element is in the second position allowing liquid to be poured from the container and allowing air to be introduced into the flow control chamber for mixing with the liquid being poured from the container to aerate the liquid being poured from the container.

An apparatus has a plurality of gas transfer membranes. The apparatus floats in water with the membranes submerged in the water. To treat the water, a gas is supplied to the membranes and is transferred to a biofilm supported on the membranes or to the water. Gas is also used to supply mixing or membrane scouring bubbles to the water. The mixing or scouring bubbles can be provided by a cyclic aeration or other gas supply system, which optionally provides gas at a variable pressure to the membranes in parallel or series with an aerator. Condensates can be removed from the membranes, and exhaust gasses from the membranes can be monitored, optionally through one or more dedicated pipes.

A bag assembly for use with a heat exchanger includes a flexible bag having of one or more sheets of polymeric material, the bag having a first end that bounds a first compartment and an opposing second end that bounds a second compartment, a support structure being disposed between the first compartment and the second compartment so that the first compartment is separated and isolated from the second compartment. A first inlet port, a first outlet port, and a first drain port are coupled with the flexible bag so as to communicate with the first compartment. A second inlet port, a second outlet port, and a second drain port are coupled with the flexible bag so as to communicate with the second compartment.

An aerator and an associated method and system are provided. The aerator includes an elongate body having a central bore that extends between proximal and distal ends of the body, and a plurality of channels formed in an outer surface of the body, the plurality of channels extending between the proximal and distal ends, and including at least two bends along their lengths. The bends in the channels help to provide a smoother flow of liquids passing through the aerator.

Proposed is a device for aerating a liquid. The device includes a housing having a liquid inlet channel, an air inlet channel and an outlet channel for a mixture of liquid and air. Mounted in the housing is a conical nozzle containing a swirler for feeding in liquid under pressure, the swirler having helical grooves on its outer surface. Mounted in the region where a conical jet of liquid exits an opening in the conical portion of the nozzle is a baffle with which the flow of liquid collides, resulting in cavitation, wherein air enters into the inner region of the jet of liquid via a channel in the baffle and through an opening in the baffle.

A wine aerator for expediting the breathing of wine just before serving having a main body 4 in a barrel shape with a flat bottom 20 and a flat top 22, the main body 4 defining a wine aeration chamber 24 where wine mixes with air to aerate the wine, a wine exit tube 6 connected to the wine aeration chamber 24 and extending substantially straight from the flat top 22, the wine exit tube 6 having an exit tube central axis and lying in an wine exit tube plane 34, an exit tube cork 16 is configured to seal the wine exit tube 6 configured to be inserted into and seal the exit tube 6, a wine inlet tube 8 connected to the aeration chamber and extending from a side of the main body 4, the inlet tube 8 is substantially perpendicular to the exit tube 6, a right elbow tube 10 having a first end and a second end, a first opening is connected to the wine inlet tube 8, the right elbow tube 10 bends at 90 degrees, a wine bottle tube 12 connected to the second opening of the right elbow tube 10, the wine bottle tube 12 having a wine bottle tube central axis 35, and the wine inlet tube 8, the right elbow tube 10, the wine bottle tube 12 and the wine bottle tube central axis 35 lying in a wine bottle tube plane, wherein the exit tube plane 34 is perpendicular to the wine bottle tube plane 36; and a wine bottle connector 14 configured to connect a wine bottle opening 32 to the wine bottle tube 12. A method of aerating wine using the wine aerator.

A mixing aerator is disclosed that includes a housing defining a chamber having a bottom end and a top end, the housing having at least one inlet and at least one outlet; and a longitudinally extending diffuser disposed within the chamber and configured to deliver air bubbles into the chamber when the chamber is filled with liquid. The diffuser includes (a) a tubular elastomeric membrane having a plurality of perforations and, within the tubular elastomeric membrane, (b) an air pipe having a plurality of openings, the openings being larger and fewer than the perforations, and the tubular membrane having upper and lower ends that are sealed against an outer surface of the air pipe.