The invention relates to a ventilation element for the introduction of a gas into a liquid, having at least one gas port, having at least one carrier plate and having at least one elastically deformable diaphragm which is connected to the at least one gas port and/or to the at least one carrier plate. A space that can be formed between the at least one diaphragm and the at least one carrier plate is connected in terms of flow to the gas port. The at least one carrier plate has a multiplicity of gas outlet openings, and at least one diaphragm is composed at least in sections of a material with a lower density than water, or is equipped with at least one float body which has a lower density than water.

A siphon-type air diffusion device for intermittently performing aeration, comprising: at least two siphon-type air diffusion pipes; and an air supply member that supplies air to the siphon-type air diffusion pipes, wherein the siphon-type air diffusion pipe includes a siphon chamber which includes a first siphon chamber and a second siphon chamber on the downstream side of the first siphon chamber, a communication portion which communicates the first siphon chamber and the second siphon chamber with each other, an air diffusion hole which is provided on the downstream side of the siphon chamber, a path which extends from the siphon chamber to the air diffusion hole, and a treatment water inlet which is provided on the upstream side of the siphon chamber, wherein the air supply member includes a distribution pipe which extends in an arrangement direction of the siphon-type air diffusion pipe, and an introduction portion which is branched from the distribution pipe and includes at least one air supply port supplying air to the siphon-type air diffusion pipe, wherein the distribution pipe is provided above the air supply port, and wherein in the air supply port of the introduction portion, the air supply port located at the uppermost position in the vertical direction is provided below a lower end of a partition wall dividing the siphon chamber and the path.

The invention relates to an aeration system for seawater oxidation in flue gas purification devices, with at least one tubular diffuser (TD), covered by at least two perforated membranes (20), which are positioned one after the other and at a distance to each other in a direction of the central longitudinal axis (A) of the diffuser (TD) as well as at least one support member (SP), which encircles a membrane-free section (FS) of the tubular diffuser at least partially, and at least one sliding means (40), arranged between the support member (SP) and the membrane-free section (FS) of the tubular diffuser (TD).

Disclosed herein is a diffusing apparatus for diffusing essential oils into the air. The apparatus includes a reservoir configured to hold essential oils in an internal cavity, and a controller assembly removably coupled to the reservoir, the controller assembly including an air inlet port, a first controller, and a piezo micro air pump unit. The apparatus further includes a base removably coupled to the controller assembly, the base including a second controller, wherein the second controller is connected to the first controller. The apparatus further includes a tube in fluid connection at a first end with the micro air pump unit and extending into the reservoir, the tube providing a path for pressurized air from the micro air pump unit into the reservoir through a plurality of orifices at a second end of the tube.

A container system includes a collapsible bag having an interior surface at least partially bounding a chamber, the chamber being adapted to hold a fluid. A sparger is disposed within the chamber of the bag, the sparger bounding a compartment and having an inside edge that encircles an opening passing through the sparger. At least a portion of the sparger is gas permeable. A tubular member is coupled to the sparger and is in communication with the compartment. A shaft passes into the chamber of the bag and through the opening of the sparger. A mixing element is secured to the shaft and is disposed within the chamber of the bag.

A micro bubble generation method and generation device. The micro bubble generation method includes: passing a gas through a microporous material, the gas forming micro bubbles at an interface between the microporous material and liquid, the bubbles being adsorbed on the surface of the microporous material; impacting the micro bubbles adsorbed on the microporous material by relative motion of the microporous material and the liquid, such that the micro bubbles detach from the microporous material and enter into the liquid. The micro bubble generation device includes a gas accommodating chamber (1) disposed below the liquid surface, and a gas transmission pipeline (3). A microporous material layer (2) is arranged around the periphery of the gas accommodating chamber (1). The gas in the gas accommodating chamber (1) passes through the microporous material layer (2) by gas pressure to form micro bubbles on the outer surface thereof. The microporous material layer (2) moves and/or the liquid outside the microporous material layer (2) moves to cut the micro bubbles.

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.

A siphon-type air diffusion device for intermittently performing aeration, comprising: at least two siphon-type air diffusion pipes; and an air supply member that supplies air to the siphon-type air diffusion pipes, wherein the siphon-type air diffusion pipe includes a siphon chamber which includes a first siphon chamber and a second siphon chamber on the downstream side of the first siphon chamber, a communication portion which communicates the first siphon chamber and the second siphon chamber with each other, an air diffusion hole which is provided on the downstream side of the siphon chamber, a path which extends from the siphon chamber to the air diffusion hole, and a treatment water inlet which is provided on the upstream side of the siphon chamber, wherein the air supply member includes a distribution pipe which extends in an arrangement direction of the siphon-type air diffusion pipe, and an introduction portion which is branched from the distribution pipe and includes at least one air supply port supplying air to the siphon-type air diffusion pipe, wherein the distribution pipe is provided above the air supply port, and wherein in the air supply port of the introduction portion, the air supply port located at the uppermost position in the vertical direction is provided below a lower end of a partition wall dividing the siphon chamber and the path.

The present invention relates to the field of fluid aeration and, in particular, fluid aeration in a tank of the type having a fluid aerator or aerators requiring removal for cleaning and/or maintenance. The aeration tank of the present invention may be a Moving Bed Bioreactor or Moving Bed Biofilm Reactor (MBBR) tank forming part of an MBBR wastewater treatment system, although the aeration tank of the present invention may also have utility in other applications. The invention further relates to an aerating lance assembly for use in an aeration tank.

Systems and methods for aeration and mixing processes are disclosed.