The present invention relates to a device, particularly a nozzle, for treating waste water, said nozzle having an outer tube and an inner tube. An intermediate space is formed between the outer tube and the inner tube and said intermediate space between the outer tube and the inner tube is divided into at least two chambers in the longitudinal direction of the tubes. The inner tube tapers in the longitudinal direction and then widens again and has at least one opening into each chamber at the constricted area. On the inner side of the inner tube and/or in the interior thereof, the device preferably has a catalyst. The present invention further relates to a method for oxidizing polluted waste water and a system for performing the method.

A beverage dispensing nozzle includes a housing having an upper end opposite a lower end, and an inlet at the upper end that is configured to be placed in communication with a source of a base liquid. The beverage dispensing nozzle further includes a chamber within the housing and in communication with the inlet. An aerator is in communication with the chamber, and the aerator includes a plate having apertures. A flavor inlet valve is in communication with a source of a flavoring and is arranged downstream of the aerator. The flavor inlet valve is configured to dispense the flavoring into the housing. The beverage dispensing nozzle additionally includes a nozzle tip arranged at the lower end of the housing.

A wine aerator includes a gas conduit having a proximal end in fluid communication with a distal end, wherein the gas conduit passes through a seal and wherein the distal end is configured to be insertable into an inside of an uncorked wine bottle. A gas source is connectable to the proximal end of the gas conduit and is in fluidic communication with the gas conduit, wherein the gas source comprises an air pump having an adjustable flow rate of at least 0.1 liters per minute up to a maximum of 20 liters per minute. A bubble-generating aeration element is disposed at the distal end of the gas conduit and in fluidic communication with the gas conduit. The bubble-generating aeration element comprises a porous material having an average pore size of at least 1 micron up to a maximum of 500 microns.

An air diffusion device is provided. The device includes a base coupled to an air supply pipe for supply of air. The base has an air discharge hole for discharge of air supplied from the air supply pipe. The device further includes a perforated cover in the form of a multi-layered stepped plate the height of which is reduced stepwise from the center to the edge. The perforated cover has a plurality of through-holes for discharge of air, and it is coupled to an upper surface of the base to cover the air discharge hole, thus defining an air guide chamber between the perforated cover and the base. The device further includes a securing mechanism configured to secure the perforated cover to the base.

Aspects of the present invention comprise a container that is stably rotatable. In embodiments, a container may rotate about a central axis, wherein the container comprises at least one feature at the central axis that facilitate rotation and at least one other lateral feature that provides stability to the container to reduce the occurrence of tipping or spilling while the container is moving.

Disclosed is a method for regenerating a SCR denitration catalyst assisted by microwaves. The method comprises: (1) a poisoned SCR denitration catalyst is immersed in deionized water, and the SCR denitration catalyst is cleaned by a bubbling method; (2) the SCR denitration catalyst is transferred to a container containing a pore-expanding solution for a soaking treatment; (3) the SCR denitration catalyst is transferred to a microwave device and treated for 1-10 minutes; (4) the SCR denitration catalyst is transferred to a container with an activating liquid and impregnated for 1-4 hours; (5) the SCR denitration catalyst is dried with microwaves for 1-20 minutes; and (6) the SCR denitration catalyst is calcined under conditions of 500-600 C. for 4-7 hours. The present invention has readily available raw materials, is simple and energy-saving in device and process, and is suitable for industrial scale regeneration. The catalyst treated by the method of the present invention has the advantages of loose pore channels, obviously optimized pore structures, significantly improved catalyst surface conditions, high activity, and good economic benefits.

An assembly for selectively aerating and heating or cooling a beverage. The assembly includes a body that receives the beverage, a heat transfer element having a control temperature, a diverter in communication with and coupled to the body, and an aerator in communication with the diverter, the aerator including a plurality of flow features and an outlet. The heat transfer element carried by the body, such that the heat transfer element is arranged to change a temperature of the beverage in the body using the control temperature. When the diverter is in a first position, the flow features are accessible and the beverage flows through the body portion, along the plurality of flow features, and through the outlet. When the diverter member is in a second position, the flow features are not accessible and the beverage flows through the body portion and through the outlet while bypassing the flow features.

A method for sterilizing by X-rays an assembly containing a single-use device intended to receive a biopharmaceutical fluid, comprising: placing a plurality of dosimeters, repeatedly passing the assembly in front of the X-ray radiation window, according to a first face then according to a second face of the assembly, at several irradiation power-time pairs (PTi), followed by mapping the radiation dose; and determining an optimum power-time pair (PTopt) for which the mapping reveals that all dosimeters have recorded a radiation dose above a minimum sterility dose (Dmin), and for which the dosimeter associated with a fragile element of the single-use device records a radiation dose below a maximum dose (Dmax) defined as being the dose from which the X-ray irradiation deteriorates the fragile element.

An apparatus for producing nano-bubbles in a moving liquid carrier includes a conduit through which a liquid carrier can flow, a gas diffuser disposed on an inner surface of the conduit, and a funnel comprising: (i) a first open end having a first cross-sectional area that receives a moving liquid carrier; (ii) a second open end opposite the first open end defining a second cross-sectional area smaller than the first cross-sectional area and fluidly coupled to the opening of the conduit; and (iii) a wall extending from the first open end to the second open end. The funnel is configured to create turbulent flow above the turbulent threshold in the absence of external energy that allows the liquid carrier to shear gas from the outer surface of the diffuser, thereby forming nano-bubbles in the liquid carrier.

An apparatus has a plurality of gas transfer membranes. The apparatus floats in water with the membranes submerged in the water. To treat the water, a gas is supplied to the membranes and is transferred to a biofilm supported on the membranes or to the water. Gas is also used to supply mixing or membrane scouring bubbles to the water. The mixing or scouring bubbles can be provided by a cyclic aeration or other gas supply system, which optionally provides gas at a variable pressure to the membranes in parallel or series with an aerator. Condensates can be removed from the membranes, and exhaust gasses from the membranes can be monitored, optionally through one or more dedicated pipes.