The invention relates to a method and a device for anaerobic digestion from an organic liquid sludge (21), comprising, in a known manner, a step of hydrolysis/acidogenesis of the sludge in a digester (47, 100), a step of acetogenesis for producing acetate from the hydrolysed sludge and a step of methanogenesis from the acetates for producing methane. The method comprises an initial step of creating a hydrolysed sludge emulsion (23) obtained by means of the impact of the sludge with gas (27) injected into the sludge, then continuously supplying the hydrolysed sludge to a reactor (25, 101) pressurised in line relative to the digester, before discharging said sludge from the reactor via a member (29) generating a pressure drop in the hydrolysed sludge, the initial stage being repeated at least once before supplying the, and/or via the, digester.

The invention relates to a method and a device for anaerobic digestion from an organic liquid sludge (21), comprising, in a known manner, a step of hydrolysis/acidogenesis of the sludge in a digester (47, 100), a step of acetogenesis for producing acetate from the hydrolysed sludge and a step of methanogenesis from the acetates for producing methane. The method comprises an initial step of creating a hydrolysed sludge emulsion (23) obtained by means of the impact of the sludge with gas (27) injected into the sludge, then continuously supplying the hydrolysed sludge to a reactor (25, 101) pressurised in line relative to the digester, before discharging said sludge from the reactor via a member (29) generating a pressure drop in the hydrolysed sludge, the initial stage being repeated at least once before supplying the, and/or via the, digester.

A micro-bubble acquisition apparatus is disclosed including a first body in which a water inlet channel, a water outlet channel, a vortex cavity communicating the water inlet channel with the water outlet channel, and an air inlet channel communicated with the vortex cavity are provided. The vortex cavity has an axis offset from an axis of the water inlet channel, the vortex cavity is provided with a water inlet communicated with the water inlet channel, and the water inlet is arranged at a side of the axis of the water inlet channel away from the axis of the vortex cavity.

A gas solution supply device 1 includes: a first gas-liquid separator 8 in which gas solution is stored; a second gas-liquid separator 16 provided at a stage subsequent to the first gas-liquid separator 8 and in which gas solution to be supplied to a use point is stored; an intermediate line 17 provided between the first gas-liquid separator 8 and the second gas-liquid separator 16; a pressure booster pump 18 provided on the intermediate line 17 and increases a pressure of gas solution being supplied from the first gas-liquid separator 8 to the second gas-liquid separator 16; a gas supply line 2 that supplies gas as a material of the gas solution; and a gas dissolving unit 20 provided on the intermediate line 17 and dissolves the gas supplied from the gas supply line 2 in the gas solution supplied from the first gas-liquid separator 8.

The invention provides an improved pool aerator for pools with water recirculation circuit, comprising a hemispherical body (200a) and an atmospheric air intake pipe (201). The body of the aerator comprises a rounded plastic object, having in the middle area a cylindrical portion (221), and at one end with a connecting means (202) to the pool nozzle, the middle portion of the aerator body continuing with a hemispherical dome (223), inside being a Venturi tube made in the form of two intersected frustoconical spaces—one for inlet (209) and the other (211) for mixing and discharging water mixed with air—whose two axes form an angle (α) between 10 and 20 degrees. The mixing hole communicates with a vertical cylindrical hole (203), in which the intake pipe is inserted by sliding, until the inner wall of the frustoconical hole is reached.

An ultrafine bubble water manufacturing device includes a whirlpool pump, an ejector, a cascade pump, a branch portion on the downstream side of the cascade pump, a return path which communicates from the branch portion between the ejector and the cascade pump, a flow rate adjusting valve and a first ultrafine bubble manufacturing unit interposed in the return path, an emission path which communicates with the branch portion, a second ultrafine bubble manufacturing unit interposed in the emission path and a control device. The control device controls an air amount adjusting valve, the whirlpool pump, the cascade pump and the flow rate adjusting valve based on the measurement values of a concentration meter for the emission path and first and second pressure gauges and on the downstream and upstream sides of the cascade pump.

A micro-bubble acquisition apparatus is disclosed including a first body in which a water inlet channel, a water outlet channel, a vortex cavity communicating the water inlet channel with the water outlet channel, and an air inlet channel communicated with the vortex cavity are provided. The vortex cavity has an axis offset from an axis of the water inlet channel, the vortex cavity is provided with a water inlet communicated with the water inlet channel, and the water inlet is arranged at a side of the axis of the water inlet channel away from the axis of the vortex cavity.

An eductor includes an adjustable air inductor assembly connected to a source of outside air or other fluid. As liquid flows through a constricted orifice of the eductor, the venturi effect creates a vacuum or low pressure zone that draws inducting fluid through the inductor assembly and infuses such fluid into the liquid driven or transmitted through the eductor. The fluid inducted liquid is then discharged by the eductor into a body or contained volume of water. Improved aeration and fluid flow control, as well as reduced algae growth are achieved without extraneous mechanical equipment. Increased turbulent liquid flow is produced, for example, to more effectively clean dirt and debris from water recirculating swimming pools, fish tanks and similar environments.

A system for distributing ozonated fluid includes a manifold that contains a plurality of fluid paths and has one or more ozone intake ports. The ozone intake ports are fluidically coupled to one or more ozone output ports of one or more ozone supply units. The manifold includes a plurality of flow switches configured to transmit control signals to one or more controllers of each ozone supply unit in response to sensing a flow of water through the fluid paths in order to cause the ozone supply units to generate ozone. The manifold also includes a plurality of fluid mixers that are fluidically coupled to the ozone intake ports and configured to introduce the ozone generated by the ozone supply units into the water flowing through the fluid paths.

A hydrogen peroxide water manufacturing device includes an ejector unit including an introduction-side diameter-increasing portion to which water to be treated is introduced, a nozzle portion connected to the introduction-side diameter-increasing portion and having an introduction opening to which a source gas containing oxygen gas is introduced from outside, on a side wall, and a discharge-side diameter-increasing portion that is connected to the nozzle portion and from which the water to be treated mixed with the source gas is discharged, and an electrolysis unit disposed downstream of the ejector unit and including electrolytic electrodes to electrolyze the discharged water to be treated mixed with the source gas and generate hydrogen peroxide by using the source gas as a source.