A gas infuser includes a mixing chamber and a liquid injector. Gas is supplied into the mixing chamber and liquid flows through openings of the injector to mix with the gas in the mixing chamber and form a gas-infused liquid.

A material mixing and supplying system is provided. The material mixing and supplying system includes a feeding module, at least three mixing and supplying barrels, a supply module, and a control unit, wherein the three mixing and supplying barrels are capable of mixing and supplying the mixed material. The supplying time of the mixed material is greater than a sum of the feeding time and the mixing time. A total operation number of the at least three mixing and supplying barrels is determined by a set amount of mixed material to be supplied by the material mixing and supplying system, and a total time to finish supplying the set amount of mixed material is determined by the total operation number.

Apparatus for introducing a gas into a main medium, comprising: a main conduit for guiding the main medium, a multitude of injection lines for guiding the gas, wherein each of the injection lines has a respective end section with a respective outlet opening situated within the main conduit, and wherein the end sections are oriented essentially parallel to each other and to the main conduit. With the apparatus a gas can be introduced in particular into waste water for obtaining a biologically activated sludge. Thereby, interaction between the gas and the waste water can be particularly pronounced due to a particularly large liquid-gas-interface caused by particularly extensive turbulences. Further, shear stress acting on particles in the activated sludge can be advantageously low, thus avoiding damage of the biological particles.

A chemical liquid preparation method of preparing a chemical liquid for treating a film formed on a substrate, including a gas dissolving process in which an oxygen-containing gas and an inert-gas-containing gas are dissolved in the chemical liquid by supplying the oxygen-containing gas which contains oxygen gas and the inert-gas-containing gas which contains an inert gas to a chemical liquid, wherein in the gas dissolving process, a dissolved oxygen concentration in the chemical liquid is adjusted by setting a mixing ratio between the oxygen-containing gas and the inert-gas-containing gas supplied to the chemical liquid as a mixing ratio corresponding to a predetermined target dissolved oxygen concentration.

A substrate processing system includes a chemical liquid preparation unit preparing a chemical liquid to be supplied to a substrate and a processing unit which supplies the chemical liquid, prepared by the chemical liquid preparation unit, to the substrate. The chemical liquid preparation unit supplies an oxygen-containing gas, containing oxygen gas, to a TMAH-containing chemical liquid, containing TMAH (tetramethylammonium hydroxide), to make the oxygen-containing gas dissolve in the TMAH-containing chemical liquid.

Provided is an ultrafine bubble generation device. A device 10 includes a rotary blower 31a, a rotary mixer 11, and a bubble shear filter 21. The rotary mixer 11 includes a hollow part 13 including a vertex X inside, an inflow hole 12 for introducing a fluid and a discharge hole 16. In an inner wall surface of the hollow part 13, a groove 14 having a spiral shape for the fluid introduced from the inflow hole 12 is provided, and the discharge hole 16 is provided away from the vertex X of the spiral shape on an axis of the spiral shape. The bubble shear filter 21 is provided with a hollow part inside, and includes an inflow hole 24 for introducing the fluid into the hollow part, and a discharge hole 26 for discharging the fluid. The hollow part is tubular, a plurality of plate-like thin plates 22 and 23 are arranged perpendicularly to a central axis of the hollow part such that the central axis passes through a center point of each circular plate, adjacent thin plates are provided with a plurality of openings and a plurality of pointed end portions, and a pointed end portion 25a and an opening 25b of the adjacent thin plates are arranged to face each other.

A pressurized beverage dispensing device that includes a vessel, a gas reservoir, a pressure regulation device, a primary filter, and a tap assembly. The gas reservoir is configured to supply pressurized gas within the vessel. The pressure regulation device is configured to maintain a pressure within the vessel that is above ambient pressure. The primary filter is configured to fit inside the vessel and to be removable from the vessel. The tap assembly includes a tap valve, a restrictor, and a flow straightener. The tap valve is configured to control dispensing through an outlet path. The restrictor is within the outlet path of the tap assembly and is configured to accelerate a flow of beverage to a turbulent flow. The flow straightener is within the outlet path of the tap assembly, downstream of the restrictor, and is configured to recombine, slow, and straighten the flow of beverage.

A method is provided for producing fine-bubble water by resonance foaming and vacuum cavitation, and a device for manufacturing each of ultra-fine-bubble water of hydrogen gas having a reducing radical function, ultra-fine-bubble water of air and oxygen gas having an oxidizing radical function, ozone ultra-fine-bubble water having a sterilization function enabled by ozone, and fine-bubble water of nitrogen/carbon dioxide gas for increasing the ability to preserve the freshness of raw agricultural products, livestock products, and marine products.

In a device for infusing a gas from a gas source into a liquid beverage, a beverage container defines an interior for holding the liquid beverage therein. A venturi mixing device has a liquid inlet port in fluid communication with the beverage container, a gas inlet port in fluid communication with the gas source and a discharge port. The venturi mixing device is configured to infuse the gas received from the gas source into liquid beverage received from the beverage container. A faucet is in fluid communication with the discharge port of the venturi mixing device and is configured to dispense the liquid beverage infused with the gas.

A gas infuser includes a mixing chamber and a liquid injector. Gas is supplied into the mixing chamber and liquid flows through openings of the injector to mix with the gas in the mixing chamber and form a gas-infused liquid.