An insert device includes a body having an upper body portion configured to couple with a cylinder head of an engine cylinder and a lower body portion extending from the upper body portion toward a combustion chamber of the engine cylinder. The body includes an interior surface extending around a central volume positioned to receive liquid fuel from a fuel injector. The body includes gas inlet channels and fuel-and-gas mixture outlet channels. The gas inlet channels direct gas into the central volume where the gas mixes with the liquid fuel to form the fuel-and-gas mixture. The fuel-and-gas mixture outlet channels direct the mixture into the combustion chamber. The interior surface includes concave surface portions between the inlet channels and the outlet channels along a center axis of the body that are shaped to direct the gas into the central volume toward the liquid fuel in the central volume.

A static mixer or a flow reactor comprising a static mixer for mixing streams of fluid transported through or circulated in a flow reactor is provided. A static mixer element reduces the size of gas bubbles in a liquid for installation in a flow channel, and comprises, a first mixer unit and a second and adjacent mixer unit, which mixer units are displaced relative to each other in the flow direction, such that a through opening in the first mixer unit at least partly faces a surface of the second mixer unit thereby forcing the fluid flow to change direction. Adjacent mixer units have substantially the same height or thickness, and are substantially parallel having a distance between them that may be near zero or up to 10 times the thickness of a mixer unit.

A ballast water treatment apparatus and a ballast water treatment system having a ballast water treatment apparatus are provided. The ballast water treatment apparatus includes a ballast water transport line configured to transport ballast water between a first location and a second location, the transported ballast water being passed through at least one injector, and a plasma generation device configured to be fed with a feed gas optionally comprising oxygen, and configured to generate a feed gas plasma by a streamer type discharge in a discharge area to provide a treated gas at a treated-gas outlet. The injector includes a liquid passage having an area constructed such as to increase a velocity of the passed-through water in a region of increased velocity, and an injector gas inlet provided in the region of increased velocity. The treated-gas outlet is in gaseous connection with the injector gas inlet.

A structure adapted to be at least partially immersed in a liquid to be purified, in particular sewage, the structure comprising: a hollow body provided with at least one inlet opening and at least one outlet opening for the liquid; first dispensing means adapted to dispense an oxygen-containing gas, for example air, arranged so as to generate a flow of fluid, in particular a mixture of sewage and said gas, towards said at least one outlet opening; second dispensing means adapted to dispense an oxygen-containing gas, for example air, arranged so as to generate a flow of fluid, in particular a mixture of sewage and said gas, outside the hollow body.

The device includes a vessel to be filled with a mixture of water and a component producing foam, where the vessel comprises a device for blowing air into the mixture to produce foam. It is provided according to the disclosure that the device comprises at least two vessels to be filled with the mixture arranged one above the other in a vertical direction in tiers, where the vessels comprise the device for blowing air into the mixture to produce foam, where the vessels are open towards an outlet region such that the foam produced in the vessels is merged in the outlet region.

The device includes a vessel to be filled with a mixture of water and a component producing foam, where the vessel comprises a device for blowing air into the mixture to produce foam. It is provided according to the disclosure that the device comprises at least two vessels to be filled with the mixture arranged one above the other in a vertical direction in tiers, where the vessels comprise the device for blowing air into the mixture to produce foam, where the vessels are open towards an outlet region such that the foam produced in the vessels is merged in the outlet region.

An apparatus for mass producing monodisperse microbubbles includes a microfluidic flow focusing device, which includes a dispersed phase fluid supply channel having an outlet that discharges into a flow focusing junction, a continuous phase fluid supply channel having an outlet that discharges into the flow focusing junction, and a bubble formation channel having an inlet disposed at the flow focusing junction. The configuration of the flow focusing junction is such that, in operation, a flow of dispersed phase fluid discharging from the outlet of the dispersed phase fluid supply channel is engageable in co-flow by a focusing flow of continuous phase fluid discharging from the outlet of the at least one continuous phase fluid supply channel under formation of a gradually thinning jet of dispersed phase fluid that extends into the inlet of the bubble formation channel.

Foamable formulations of agriculturally active ingredients are provided, as well as methods for using them. The formulations allow improved delivery active ingredients by the ability to deliver high amounts of active ingredient with a low volume of formulation used.

Systems and methods for dissolving ozone gas in a liquid. An embodiment can comprise a tank having an upper region, a lower region, and a discharge outlet, all disposed in a specified geometry. A pump can be coupled with a liquid inlet in order to receive a liquid therefrom and to deliver the liquid via a pipe to the upper region of the tank. The pump can be coupled with the lower region of the tank in order to receive the liquid from the tank and to recirculate the liquid to the upper region of the tank. The apparatus can include an ozone inlet to receive ozone into the tank. The ozone inlet can comprise a venturi inlet disposed on the pipe downstream of the pump. The liquid can be released from the tank and depressurized, thereby providing for the ozone to emerge from the liquid as gas bubbles. The released liquid can be selected for a two-stage gas and aqueous cleaning process.

A micro-bubble generator is provided between an input end and an output end of a water outlet device. The micro-bubble generator includes a water inlet member and a water outlet member. A gas inlet gap is remained between the water inlet member and the water outlet member, with the gas inlet gap being communicated to external air, such that the external air is allowed to enter the micro-bubble generator for gas-liquid mixing and generate minute and dense bubbles.