A production device includes: at least one device for dissolving solid urea in demineralized water, including a tank for receiving the solid urea and the demineralized water and an outlet for recovering the aqueous solution of urea; a solid urea storage station; and a device for transporting the solid urea from the storage station to the dissolving device, the transporting device being arranged in order to pour solid urea into the tank of the dissolving device. The dissolving device includes at least one nozzle for injecting demineralized water into the solid urea, arranged in the vicinity of the bottom of the tank in order to create water turbulence below the surface of the solid urea and to dissolve the solid urea in the demineralized water.

A system and method for mixing and dispensing one or more pesticides includes a plurality of pesticide containers (5) for containing pesticide and at least one dosing device (7) associated with the pesticides containers and adapted to dose pesticide from the pesticide containers. A mixing device (9) receives pesticide from the dosing device and mixes the pesticide to form at least one of a pesticide solution and a pesticide mixture. A computer device (21) includes a processor and is adapted to receive an input from a user and based on that input operate the dosing device to dose a quantity of pesticide from one or more of the pesticide containers.

A method and apparatus for obtaining a product chemistry from a product and a fluid is provided. A product is housed within a dispenser. A fluid is introduced through a manifold diffuse member having a plurality of ports. A cover is positioned adjacent the manifold diffuse member and includes a plurality of ports. The cover is able to be adjusted, for example, by rotating the cover, to align and un-align the manifold diffuse ports and the cover ports. This adjustment controls the flow characteristics of the fluid through the manifold diffuse member and cover to control the characteristics of the fluid in contact with the product. The adjustment of the cover to control the flow will provide a generally consistent concentration and erosion rate based upon known relationships between a characteristic of the fluid and the flow of the fluid in relation to the product.

An automated bioprocess solution preparation apparatus includes a first mixing chamber containing at least one ingredient for a bioprocess solution, a first port and a second port for a fluid to enter the mixing chamber, and a third port for a liquid bioprocess solution to exit the mixing chamber. The apparatus further includes an array of tubing for fluid flow within the apparatus, a sensor arranged to measure a property of the liquid bioprocess solution exiting the mixing chamber, a first valve associated with the first port, and a second valve associated with the second port. When the property meets or exceeds a threshold value, the apparatus is operable to perform at least one of: closing the first valve to block the fluid from entering the mixing chamber through the first port, and opening the second valve for the fluid to enter the mixing chamber through the second port.

A method for controlling the saturation level of gas in a liquid discharge includes obtaining temperature and pressure measurements of a solvent in a mixing vessel and obtaining a pressure measurement of a source feedstock in a feedstock tank, correlating the temperature and pressure measurements of the solvent to baseline data to generate a theoretical uptake rate for the source feedstock into the solvent and a theoretical flow rate of the source feedstock into the mixing vessel, and determining a required opening setting for a feedstock valve in the feedstock input line in order to achieve a desired liquid displacement in the mixing vessel. The method includes determining an uptake duration and achieving an uptake displacement equivalent to the reverse of the desired liquid displacement. The method includes generating a valve operating control law for how the feedstock valve should function in a cycle.

Disclosed is a dissolution mixer, which includes: a dissolution bath configured to accommodate a powder and a solvent for dissolving the powder; a powder input unit located at an outer side of the dissolution bath; an impeller installed to be rotatable inside the dissolution bath; and an anchor located inside the dissolution bath and having a passage of the powder inputted by the powder input unit and a powder spouting hole connected to the passage.

A method and apparatus for obtaining a product chemistry from a solid block is provided. The product is housed within a dispenser, which utilizes a liquid and a gas to erode the block and produce a concentrate solution. The liquid and gas characteristics can be adjusted in the field to achieve a predetermined concentrate level in the solution. The introduction of air into the dispenser saves water, while producing higher concentrate levels.

A wet cleaning apparatus that cleans an item with carbon dioxide gas-dissolved water produced by dissolving carbon dioxide gas in ultrapure water, the wet cleaning apparatus including: a carbon dioxide gas-dissolving unit that dissolves carbon dioxide gas in ultrapure water; a cleaning unit that cleans an item, the cleaning unit receiving carbon dioxide gas-dissolved water fed from the carbon dioxide gas-dissolving unit; and a filtration membrane module disposed on a pipe through which the carbon dioxide gas-dissolved water is fed to the cleaning unit, the filtration membrane module being filled with a porous membrane including a cationic functional group.

The disclosure extends to systems, methods, and devices for mixing a fluid. The system comprises a tank conduit suspended in a tank for receiving a mixture comprising a liquid, wherein the tank holds the mixture. The system comprises a rigid casing configured to surround the tank and a pump attached to the rigid casing. The system includes a suction inlet and a discharge outlet attached to the pump, wherein the pump creates a negative pressure that draws the mixture into the pump through the suction inlet and the pump creates a positive pressure that dispels the mixture out of the pump through the discharge outlet.

A urea preparation machine includes a cabinet, a stirring tank, a filtering portion, a water tank portion and a heating portion. The stirring tank is provided in the cabinet. The filtering portion is provided in the cabinet. An inlet of the water tank portion s communicated with an outlet of the filtering portion. The heating portion is provided in the cabinet, the heating portion is communicated with the outlet of the water tank portion, and an outlet of the heating portion is communicated with the stirring tank. The independent heating portion is used for heating water in the water tank portion, then the water heated by the heating portion is conveyed to the stirring tank for preparing urea, through such installation, the heating portion is capable of heating the water in the water tank portion in time.