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 system for mixing and mixing processes and structures are disclosed. In addition a nozzle used for mixing is disclosed.

A gas-saturated liquid generator having a vessel of the generator, a hollow bell in its upside down position located with a tube for gas supply, and a mixer situated in the area for saturated liquid covered by the bell is disclosed. The entire bell is submerged below the surface of the saturated liquid. On a shaft projecting from a driving equipment, the mixer provided with a foaming spring is situated. The mixer provided with a magnetic carrier seated rotatably on the protrusion formed by a bulge in the bottom part of the generator vessel may be used. The preferred bell forms are dome-shaped, cylindrical or conical.

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.

The present invention pertains to an oxygen dissolution device. According to the device, the oxygen and water introduced into the housing are agitated and mixed with each other by eddies and currents formed by the plurality of first smashing blades and the second smashing blades, then converted into oxygen-dissolved water having a large amount of dissolved oxygen. Therefore, an amount of oxygen which is not dissolved in the water to be waste may be decreased so as to reduce purchase costs of oxygen, as well as, when supplying the oxygen-dissolved water having a large amount of dissolved oxygen as described above to a fish farm, the amount of dissolved oxygen of the water in the fish farm may be rapidly adjusted to a level which is suitable for the farmed fish to live in.

The invention relates to a facility for treatment of an aqueous effluent by hydrothermal oxidation, which comprises: a reactor comprising a tube in which the aqueous effluent to be treated flows, the tube of the reactor having a plurality of bends formed by oxidant-injection devices, each oxidant-injection device comprising: a reactor part (32) forming an effluent-circulation channel (35) bent at an angle in which a flow of aqueous effluent can circulate, and an injector part (33) comprising a first opening (49) suitable for being connected to a source of oxidant located outside the effluent-circulation channel (35) and a second opening (50) located in the effluent-circulation channel (35), and a source of oxidant connected to the injector part so as to inject the pressurised oxidant into the flow of aqueous effluent to be treated.

This application relates to an oxygen infusion module for a system and method of treating wastewater wherein an oxygen infusion system is used to supersaturate wastewater before aerobic biological processes, wherein oxygen is transferred to the wastewater free of oxygen bubbles and achieves a reduction in power demand for the aeration process of wastewater.

There is provided an oxygenation assembly submersible within a body of water. The oxygenation assembly includes a mass transfer vessel configured to receive water and promote dissolving of oxygen therewithin at least in part using pressure from the body of water. The vessel is elongate and may have a fixed diameter. The oxygenation assembly includes a bubble generator downstream of the vessel and which functions as a throttling device. The bubble generator is configured to dissipate pressure within the vessel in a manner that promotes breaking up of remaining undissolved gaseous bubbles. The oxygenation assembly may include an aeration system coupled to and in this example in line with the vessel. The aeration system disperses water of elevated dissolved oxygen content throughout a larger volume of water having a lower bulk dissolved oxygen concentration.

Disclosed are systems and methods for mixing a gas-free liquid oxidant with a process liquid to form a homogeneous and gas-free mixture with minimized degassing. The mixing system comprises an injection device, integrating with a pipe through which a process liquid flows, configured and adapted to inject a gas-free liquid oxidant into the process liquid, and a mixer, fluidly connected to the pipe and the injection device, configured and adapted to mix the process liquid and the gas-free liquid oxidant therein to form a homogeneous and gas-free mixture of the process liquid and the gas-free liquid oxidant with minimal degassing. The method comprises the steps of a) injecting the gas-free liquid oxidant into the process liquid, and b) mixing the gas-free liquid oxidant and the process liquid to form the homogeneous and gas-free mixture. The gas-free liquid oxidant is ozone strong water.

An aeration grid is provided. The aeration grid may comprise a curved body, a plurality of aeration extensions extending from the curved body, wherein each of the plurality of aeration extensions may comprise one or more aeration openings, and a plurality of nesting extrusions extending between the curved body and the plurality of aeration extensions.