A functional water producing apparatus in an embodiment includes: a water pressure regulator configured to regulate the water pressure of the ultrapure water, the water pressure regulator having a pressure regulating valve configured to regulate a water pressure of the ultrapure water to an almost constant pressure and a feed water pump configured to pressurize the ultrapure water; a dissolving device configured to dissolve functional gas imparting a specific function in the ultrapure water regulated the water pressure by the water pressure regulator; and a control device configured to control the feed water pump to regulate the water pressure of the functional water to a predetermined constant pressure based on a water pressure or a flow rate of the functional water flowing out of the dissolving device.

An NO-accumulation apparatus, method and use, comprising: a container (120) defining a cavity for accommodating a liquid (105), an inlet (150) for feeding the liquid into the container (120) and an outlet (151) for delivering the liquid from the container (120) to a bath unit; an NO-gas dissolving unit (140) for dissolving gaseous NO in the liquid (105) to produce an NO-containing liquid, wherein the NO-gas dissolving unit (140) is arranged in the container (120) and/or forms a part of the container (120); and an NO-gas port (110) in fluid communication with the NO-gas dissolving unit (140), wherein the NO-gas port (110) is adapted for coupling, particularly for releasably coupling, with an NO-gas supply, whereby the apparatus further comprises means for decoupling the inflow of NO to the liquid (105) within the container from the removal of the NO-containing liquid (NO-decoupling means), so that the removal of the NO-containing liquid is inhibited, when the NO is flowing into the liquid, and also the NO inflow is inhibited when the NO-containing liquid is removed from the container (105).

A resistivity adjustment device includes: a hollow fiber membrane module that is divided by a hollow fiber membrane into a liquid phase side area; a liquid supply pipe that communicates with the liquid phase side area; a liquid discharge pipe that communicates with the liquid phase side area; a gas supply pipe that communicates with the gas phase side area; a gas discharge pipe that communicates with the gas phase side area; a bypass pipe that communicates with the liquid supply pipe and the liquid discharge pipe to bypass the hollow fiber membrane module; and a first on-off valve that is connected to the gas discharge pipe and opens or closes a first passage inside the gas discharge pipe, wherein the first on-off valve opens the first passage to discharge water accumulated in the gas phase side area.

A functional water producing apparatus in an embodiment includes: a water pressure regulator configured to regulate the water pressure of the ultrapure water, the water pressure regulator having a pressure regulating valve configured to regulate a water pressure of the ultrapure water to an almost constant pressure and a feed water pump configured to pressurize the ultrapure water; a dissolving device configured to dissolve functional gas imparting a specific function in the ultrapure water regulated the water pressure by the water pressure regulator; and a control device configured to control the feed water pump to regulate the water pressure of the functional water to a predetermined constant pressure based on a water pressure or a flow rate of the functional water flowing out of the dissolving device.

A super-fine bubble generation apparatus includes a fine-array porous membrane and a device for generating substantially uniform, super-fine gas bubbles in a liquid. The fine-array porous membrane includes a plurality of pores having a substantially uniform size of <100 m, with a variation of <20%. The super-fine gas bubbles generated by this apparatus can have a size of 50 nm-50000 nm, with a substantially uniform distribution with variations <20%. Applications of such super-fine bubble generation apparatus can include a skin cleansing device, or a teeth-cleaning device.

A gas sparger produces an intermittent flow of bubbles even if provided with a continuous gas flow. The sparger has a housing to collect a pocket of gas and a conduit to release some of the gas from the pocket when the pocket reaches a sufficient size. Optionally, a cover over an outlet from the conduit may break up or distribute the released gas. A large sparger for use with a commercial membrane module can comprise a plurality of smaller units.

A saturator, configured for use in a water treating apparatus, includes a chamber, in which a first flow path through which first fluid flows is formed, and a plurality of porous membranes disposed in the first flow path, a second flow path formed within the plurality of porous membranes, through which second fluid flows. The first fluid is dissolved in the second fluid, or the second fluid is dissolved in the first fluid. Accordingly, a contact area between the first fluid and the second fluid is enlarged, and thus, a dissolving speed increases.

A fluid distribution device for a gas-liquid contactor the device having a first side, a second side and a plurality of through-holes extending from the first side to the second side, through which holes a first fluid can flow. The fluid distribution device further having an interior, which is delimited by the first side and the second side and which is sealed in a fluid-tight manner in relation to the through-holes, a plurality of openings, which connect the interior to the second side, and a fluid connection, through which a second fluid can be introduced into or evacuated from the interior. A gas-liquid contactor having a fluid distribution device of this type and to a method for adding a gas to a liquid is also disclosed.

A gas sparger produces an intermittent flow of bubbles even if provided with a continuous gas flow. The sparger has a housing to collect a pocket of gas and a conduit to release some of the gas from the pocket when the pocket reaches a sufficient size. Optionally, a cover over an outlet from the conduit may break up or distribute the released gas. A large sparger for use with a commercial membrane module can comprise a plurality of smaller units.

The invention relates to an aeration system for seawater oxidation in flue gas purification devices, with at least one tubular diffuser (TD), covered by at least two perforated membranes (20), which are positioned one after the other and at a distance to each other in a direction of the central longitudinal axis (A) of the diffuser (TD) as well as at least one support member (SP), which encircles a membrane-free section (FS) of the tubular diffuser at least partially, and at least one sliding means (40), arranged between the support member (SP) and the membrane-free section (FS) of the tubular diffuser (TD).