An adhesive-air infuser comprises a hollow body through which adhesive and air flow. The air is directed into the hollow body at an upstream end of the hollow body through an air nozzle positioned within the hollow body, and the adhesive is directed into the hollow body at the upstream end of the hollow body such that the adhesive flows around at least a portion of the air nozzle as the adhesive flows through the hollow body. The adhesive and air are directed by adhesive supply pressure and air supply pressure to flow through the hollow body toward an output port. In various embodiments, adhesive and air flow along a tortuous path that causes the air to mix into the adhesive to form an adhesive-air solution having a density less than the adhesive supplied to the upstream end of the hollow body.

Apparatus is disclosed for separating an amount of a substance from groundwater, comprising an elongate chamber (18) having an inlet (22) which is arranged in use to admit groundwater into the chamber near a lower first end (24). There is also a gas sparger (26) located near the first end (24) which admits gas into the chamber for inducing groundwater to flow from the first end (24) of the chamber toward a second end upper end, and for producing a froth layer (32) which rises above an interface with the groundwater including a concentrated amount of the substance. A suction hood (38) can be moved downward from the top of the chamber (18) into a position to collapse the froth layer (32) and to cause it to be removed from the well body (14). The suction hood (38) (acting as a froth depth regulation device) controls the amount of groundwater in the froth layer (32), which influences the concentration of the contaminant substance achieved in the froth layer (32).

An adhesive-air infuser comprises a hollow body through which adhesive and air flow. The air is directed into the hollow body at an upstream end of the hollow body through an air nozzle positioned within the hollow body, and the adhesive is directed into the hollow body at the upstream end of the hollow body such that the adhesive flows around at least a portion of the air nozzle as the adhesive flows through the hollow body. The adhesive and air are directed by adhesive supply pressure and air supply pressure to flow through the hollow body toward an output port. In various embodiments, adhesive and air flow along a tortuous path that causes the air to mix into the adhesive to form an adhesive-air solution having a density less than the adhesive supplied to the upstream end of the hollow body.

A multi-stage aeration generator, comprising a generator body (1). A pressure monitoring device (2) and a venturi nozzle (3) are installed on the generator body (1). The generator further comprises: a capillary tube (4) and a concentric tube (5). One end of the capillary (4) is connected to the venturi nozzle (3), and the other end thereof is connected to the concentric tube (5). Also disclosed is a wastewater treatment method using the multi-stage aeration generator.

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.

Embodiments described generally relate to systems comprising a humidifier (e.g., a bubble column humidifier) and a heating device (e.g. a heat exchanger), and associated methods. In certain embodiments, the heating device heats a first liquid stream comprising a condensable fluid in liquid phase (e.g., water) and a dissolved salt (e.g., NaCl) to a relatively low temperature (e.g., about 90 C. or less) prior to the first liquid stream entering the humidifier through a main humidifier liquid inlet. In some cases, the system comprising the humidifier and the heating device requires only low-grade heat to operate, which may be advantageous due to the low cost and high availability of such heat.

The present disclosure is related to a process comprising steps of fermentation, separation and purification that can be carried out in a centralized facility with large scale fermentation or in a decentralized facility with smaller scales of fermentation to make value added products from substrate not limiting to gaseous substrates effectively. The fermentation involves fermentative production of a marketable product using reactors or fermentors which are optimized for influential parameters such as gaseous substrate, gas hold up, mass transfer coefficient, etc. The separation step involves an effective way of separating desired product from fermentation broth by employing filtration, precipitation or adsorption techniques thereby enabling easy transportation of the product in case of a decentralized facility. The final stage of the process, either in centralized or decentralized facility, includes the elution of retained product and further purification of the same using downstream processing techniques.

A hydrogen rich water generator includes a container, a hydrogen input, a dividing tube, a vibrator, and a cover. The container is used for containing water and comprises an opening and an inner wall. The hydrogen input is one-piece formed on the inner wall of the container and interconnects the inside and the outside of the container. The dividing tube is configured in the container and connected to the hydrogen input. The vibrator is used for vibrating the water. The cover is configured on the opening of the container wherein when the cover is removed, the water can be added or hydrogen rich water can be taken out. The vibrator of the creation can assist the hydrogen micro bubbles mixed with the water well to generate hydrogen rich water and humidified hydrogen.

A device for bubbling a gas into a liquid is disclosed. The device comprises a first bubbling apparatus nested inside a second bubbling apparatus. The first bubbling apparatus comprises a gas inlet for receiving the gas and a plurality of first openings for releasing the gas. The second bubbling apparatus at least partially encloses the plurality of first openings of the first bubbling apparatus. The second bubbling apparatus receives the gas from the plurality of first openings. The second bubbling apparatus comprises a plurality of second openings for bubbling the gas into the liquid.

An aquaculture environment control system comprising a plurality of discharge conduits positioned in a vessel, the discharge conduits including one or more orifices; a fluid source in fluid communication with the plurality of discharge conduits; a gas supply source in fluid communication with at least one of the plurality of discharge conduits; wherein discharging fluid from the plurality of discharge conduits into the vessel creates or maintains a current throughout fluid present within the vessel. A method of controlling an aquaculture environment comprising supplying one or more of a fluid and a gas to a plurality of discharge conduits positioned in a vessel; and discharging the one or more of the fluid and the gas from at least one of the plurality of discharge conduits to the vessel, the discharging creating or maintaining a current within the vessel.