A self-pressurization gas-liquid mixing device used for making a beverage is provided. The self-pressurization gas-liquid mixing device includes a container, a liquid inlet pipe configured to allow liquid to enter the container, a gas inlet pipe configured to allow gas to enter the container, and a liquid discharging pipe configured to discharge the liquid; a partition plate is arranged in the container to divide the container into a premixing chamber and a mixing chamber, the premixing chamber is arranged at the side of the liquid inlet pipe and the gas inlet pipe, the partition plate is provided with a plurality of premixing through holes, a mixing layer is further arranged between the mixing chamber and the liquid discharging pipe and includes a plurality of miniature pipes, and whisker holes which are opened and closed in one direction are formed in pipe walls of the miniature pipes.

The present invention relates to liquid to air evaporative heat exchange apparatus, mainly for cooling towers, air conditioning units, and humidifies alike. The present invention incorporate an evaporative module embedded with a liquid delivery system with flow directors to control the flow of liquid through all of its layers. Such a design allows for an even and smooth liquid distribution, while at the same time maximized the duration and surface area for heat exchange to take place. The evaporative module of the present invention can be sealed off at various sections to redirect airflow. Such a design serves dual functions as a drift eliminator or regulator.

A multi-stage aeration apparatus includes at least two vertically oriented aeration modules. Each aeration module defines a vertically elongated aeration chamber having a top inlet and a bottom outlet. The bottom outlet of each of the aeration modules feeds a fluid stream comprising liquid and gas into the top inlet of an underlying one of the aeration modules. Each aeration module has an aeration head connected to the top inlet, such that the fluid stream passing through the top inlet into the aeration chamber must pass through the aeration head, the aeration head aerating the liquid with the gas in the fluid stream.

A multi-directional contactor apparatus configured to utilize co-current and counter current flow to contact a first fluid and a second fluid, wherein the second fluid is more dense than the first fluid. The contactor comprises a chamber partially divided by a vertically extending weir, a first inlet port permitting the first fluid to enter the chamber, a second inlet port positioned above the first inlet port and permitting the second fluid to enter the chamber. Countercurrent and co-current contact of the first and second liquids occurs on one side of the weir. The weir separates the co-current contacted second fluid stream from the countercurrent contacted second fluid stream and allows the separated streams to be released from the chamber. The co-current and countercurrent contacted first fluid is released from an upper portion of the tank.