Provided are: a microbubble generation device utilizing a swirling flow generated by injecting of a pressurized liquid; a microbubble generation method capable of generating a large amount of bubbles; and a shower apparatus and an oil-water separation apparatus having said microbubble generation device. This microbubble generation device comprises: a cylindrical or conical cylinder with a gas-liquid swirling chamber therein; a gas-liquid discharge inlet provided on one end of the cylindrical or conical cylinder; and a liquid supply cylinder and a gas supply cylinder for introducing a liquid and a gas into the gas-liquid swirling chamber. For the gas-liquid discharge outlet, a plurality of small cylindrical through-holes or a plurality of small recessed parts with a circular cross-section and at least a semicircular circumferential length, are respectively provided in the wall of a closed end at one end of the cylindrical or conical cylinder or on the circumferential surface of the inner wall of an open end at one end thereof.

Provided is a liquid supply apparatus which is capable of directly taking in a liquid from a flow channel and appropriately mixing a gas into the liquid when generating-nanobubbles in the liquid using an ultrafine bubble generating apparatus. The liquid supply apparatus comprises a flow channel for a liquid supplied from a liquid supply source and an ultrafine bubble generating apparatus for generating nanobubbles in the liquid. The ultrafine bubble generating apparatus is provided with: a liquid ejector for ejecting the liquid taken in from the flow channel; a gas mixer for pressurizing and mixing a gas into the liquid ejected from the liquid ejector; and a nanobubble-generating nozzle for generating nanobubbles in the liquid by passing the liquid with intermixed gas therethrough. The pressure of the liquid in the flow channel flowing into the liquid ejector from the upstream-side of the liquid ejector is a positive pressure and, between the liquid ejector and the-nanobubble-generating nozzle, the gas mixer pressurizes and mixes the gas into the liquid, which is flowing in a pressurized state toward the nanobubble-generating nozzle.

A wastewater evaporation system for spray evaporating water comprising: a wastewater feed inlet; a pump, wherein the wastewater feed inlet is fluidly connected to the pump and wherein the pump is fluidly connected to an inlet of a manifold; a drip orifice, wherein the manifold is fluidly connected to the drip orifice; a container, wherein an upper portion of the container is enclosed with a demister element; a packing and/or tray system disposed within the container, wherein the drip orifice discharges water droplets onto the packing and/or tray system; a discharge outlet, wherein a bottom of the container is fluidly connected to the discharge outlet; and an air system, wherein the air system discharges air flow counter to the water droplets from the drip orifice is disclosed. A method of spray evaporating water while limiting emission of particles regulated as pollutants is also disclosed.

Ion removing system includes primary-side ion removing apparatus that includes primary-side hard water storage part storing hard water and primary-side fine bubble generating part generating and supplying fine bubbles to primary-side hard water storage part and that causes fine bubbles to adsorb first metal ions in hard water in primary-side hard water storage part to remove first metal ions from hard water, secondary-side pH adjustment apparatus increasing pH of hard water from which first metal ions are removed by primary-side ion removing apparatus, and secondary-side ion removing apparatus that includes secondary-side hard water storage part storing hard water having pH increased by secondary-side pH adjustment apparatus and secondary-side fine bubble generating part generating and supplying fine bubbles to secondary-side hard water storage part and that causes fine bubbles to adsorb second metal ions in hard water in secondary-side hard water storage part to remove second metal ions from hard water.

The efficiency of water disinfection can be significantly increased by supplying the ozone in combination with oxygen to an inlet of a cavitation pump or a line atomizer. A compressor can be introduced at an inlet of the cavitation pump or the line atomizer, compressing the gas mixture at a pressure higher than the pressure within pump or the atomizer. The compressed gases are provided to the inlet of the atomizer or the pump, where the compressed gases mix with the water and enter the cavitation pump or the line atomizer (where most of the dissolution of the gases happens). The compressor allows to increase the amount of oxygen and ozone provided to the pump or the line atomizer, increasing their dissolved concentration. In addition to the disinfecting properties, the higher level of oxygen correlates to an improved taste of the water.

A magnetic fluid treatment system chamber for treating water for agricultural and other uses includes a fluid inlet and a fluid outlet opposite the fluid inlet. A fluid flow path runs from the fluid inlet to the fluid outlet. A plurality of ferrous metal rods is located circumferentially-spaced about the flow path. The ferrous metal rods are parallel to the flow path. A plurality of axially oriented magnets each has a north face and a south face. Each of the faces of the axially oriented magnets abuts one of the ferrous metal rods.

In order to efficiently produce a liquid containing ultrafine bubbles of a desired gas, an ultrafine bubble-containing liquid producing apparatus includes a gas dissolving unit that dissolves a predetermined gas into a liquid, and a UFB generating unit that generates ultrafine bubbles in the liquid in which the predetermined gas is dissolved. A CPU performs control under a first condition in a case of causing the gas dissolving unit to operate in a circulation route passing through the dissolving unit. The CPU performs control under a second condition different from the first condition in a case of causing the UFB generating unit to operate in a circulation route passing through the UFB generating unit.

A system that uses thermal addition, particle size reduction, increasing surface area, pressure reduction and kinetic energy increases to vaporize and dewater wastewater and/or sludge and/or other liquids mixed with entrained solids to produce a cleaned water condensate and a dewatered solid product. The wastewater and/or sludge enters a cylindrical drum through a rotary entrance valve. A rotating hammermill inside a drum with an exterior thermal jacket pulverizes the entering wastewater or sludge with rotating blades that keep the pulverized product against the inside of the drum's inside surface to vaporize water to separate it from solids. The vaporized water is condensed and discharged from the system and a solid product exits the drum via rotary valves. A vacuum is maintained on the drum to enhance the system.

A system for creating an oxidation reduction potential (ORP) in water employs a manifold. The manifold includes an enclosure containing a plurality of fluid paths and having one or more ozone intake ports. The ozone intake ports are fluidically coupled to one or more ozone output ports of an ozone supply unit housed in a separate enclosure. A plurality of flow switches are disposed within the enclosure and configured to transmit control signals to one or more controllers of the ozone supply unit in response to sensing a flow of water through the fluid paths in order to cause the ozone supply unit to generate ozone. A plurality of fluid mixers are also disposed within the enclosure. The fluid mixers are fluidically coupled to the ozone intake ports and configured to introduce the ozone generated by the ozone supply unit into the water flowing through the fluid paths.

A system and method for treating flowing water systems with a plasma discharge to remove or control growth of microbiological species. The system and method protect other components of the water system from being damaged by excess energy from the electrohydraulic treatment. The system and method also recycle ozone gas generated by a high voltage generator that powers the plasma discharge to further treat the water. A gas infusion system upstream of or inside a plasma reaction chamber may be used to create fine bubbles of ozone, air, or other gases in the water being treated to aid in plasma generation.