A microbubble generation device comprises a liquid inlet (101), a gas inlet (104), a bubble flow outlet (103), and a gas-liquid mixing chamber (102). An air-permeable hole having an angle structure is provided at a gas-liquid interface of the gas-liquid mixing chamber (102), and a pointed end of the angle structure of the air-permeable hole points to a liquid flow direction. The bubbles generated by the device are extremely small in diameter, prolonging a duration the bubbles stay in the liquid phase, and enhancing gas-liquid mass transfer efficiency.

Provided is a washer liquid supply system in a simple structure and capable of improving the capacity of washing an object of a vehicle. A washer liquid supply system includes: a washer tank mounted on a vehicle to store washer liquid; a supply section mounted on the vehicle to supply the washer liquid in the washer tank to a window shield of the vehicle; and a connecting member being a bubbling section mounted on the vehicle to make the washer liquid contain bubbles, wherein the supply section supplies the washer liquid containing the bubbles to the window shield.

The disclosure provides a gas-liquid dissolving apparatus, comprising: a sealed tank, a gas jet tube and a plurality of membrane plates; the sealed tank being provided with a liquid supply joint at top, and a gas inlet joint and an output joint at bottom; the gas jet tube being located inside the sealed tank and connected to the gas inlet joint; the gas jet tube having a plurality of gas jet holes distributed on tube wall; the plurality of membrane plates being stacked around the periphery of the gas jet tube and fixed; each membrane plate being ring-shaped, and being structured with an inner ring wall, a mixing chamber and an outer ring wall sequentially from the center; the mixing chamber having an opening facing downward, and the inner ring wall being thicker than the outer ring wall, with a gap existing between the two adjacent stacked outer ring walls.

A system for mixing and mixing processes and structures are disclosed. In addition a nozzle used for mixing is disclosed.

A container assembly includes a flexible bag having an interior surface bounding a chamber and an opposing exterior surface. The bag has a bottom end wall that includes a first sparger and a second sparger. The first sparger and the second sparger each have a flexible first sheet overlying a flexible second sheet, the first sheet and the second sheet being secured together so as to form a sparging area bounded between the first sheet and the second sheet, at least a portion of the first sheet overlying the sparging area being gas permeable so that gas can pass from the sparging area, through the first sheet, and into the chamber.

Under one aspect, a fermentation system includes a fermentation vessel having a straight wall length L and an inner diameter D. The fermentation system also can include a source of a gas including a reactive gaseous component. The fermentation system also can include spargers spaced apart from one another along the straight wall length L of the fermentation vessel and configured to introduce bubbles of the gas into fermentation broth within the fermentation vessel. The release of the bubbles of the gas by each of the spargers can establish a respective mixing zone within the fermentation broth within the fermentation vessel. Each mixing zone can have substantially the same volumetric uptake rate of the reactive gaseous component by the fermentation broth as each other mixing zone.

Embodiments of the present disclosure describe an aquaculture environment control system comprising one or more control apparatuses positioned within a vessel at an angle relative to a proximal vessel wall and configured for scouring of the vessel, wherein each control apparatus has a discharge conduit and each discharge conduit has one or more orifices; and a fluid source in fluid communication with each of the control apparatuses. Embodiments of the present disclosure describe a method of controlling an aquaculture environment comprising supplying one or more of a fluid and gas to a control apparatus positioned within a vessel at an angle relative to a proximal vessel wall; and discharging one or more of the fluid and gas from the control apparatus at a fluid velocity sufficient for scouring of the vessel.

A container assembly includes a flexible bag having an interior surface bounding a chamber and an opposing exterior surface. The bag has a bottom end wall that includes a first sparger and a second sparger. The first sparger and the second sparger each have a flexible first sheet overlying a flexible second sheet, the first sheet and the second sheet being secured together so as to form a sparging area bounded between the first sheet and the second sheet, at least a portion of the first sheet overlying the sparging area being gas permeable so that gas can pass from the sparging area, through the first sheet, and into the chamber.

A system and method for aerating and mixing wastewater that includes fine bubble diffusers located at least partially below a large bubble mixer. At least a portion of the gas discharged from the fine bubble diffusers is captured by the large bubble mixer and is reused by the large bubble mixer to form and release intermittent large bubbles. Prior to being captured by the large bubble mixer, the gas discharged by the fine bubble diffusers can aerate the wastewater. The large bubble mixer includes an accumulator that, upon becoming filled with gas, generates and releases a large bubble. Upon discharge from the large bubble mixer, the large bubbles generated therein may separate into a plurality of coarse bubbles for providing additional oxygen transfer and mixing of the wastewater. The system may include supply lines for supplying gas only to the fine bubble diffuser.

The disclosure provides a gas-liquid dissolving apparatus, comprising: a sealed tank, a gas jet tube and a plurality of membrane plates; the sealed tank being provided with a liquid supply joint at top, and a gas inlet joint and an output joint at bottom; the gas jet tube being located inside the sealed tank and connected to the gas inlet joint; the gas jet tube having a plurality of gas jet holes distributed on tube wall; the plurality of membrane plates being stacked around the periphery of the gas jet tube and fixed; each membrane plate being ring-shaped, and being structured with an inner ring wall, a mixing chamber and an outer ring wall sequentially from the center; the mixing chamber having an opening facing downward, and the inner ring wall being thicker than the outer ring wall, with a gap existing between the two adjacent stacked outer ring walls.