A device for treating wastewater liquids, the device comprising a housing (4) incorporating a membrane supported biofilm reactor (MSBR) (2) of the type comprising a lumen containing a gas phase, a liquid phase, and a gas permeable membrane (20) providing an interface between the gas and liquid phases; and a means (6) for mixing the wastewater liquids in the device, wherein the means (6) for mixing the wastewater liquids is configured to create a mixing intensity sufficient to ensure that there is contact between the membrane (20) and the wastewater liquid to be treated.

A device for treating wastewater liquids, the device comprising a housing (4) incorporating a membrane supported biofilm reactor (MSBR) (2) of the type comprising a lumen containing a gas phase, a liquid phase, and a gas permeable membrane (20) providing an interface between the gas and liquid phases; and a means (6) for mixing the wastewater liquids in the device, wherein the means (6) for mixing the wastewater liquids is configured to create a mixing intensity sufficient to ensure that there is contact between the membrane (20) and the wastewater liquid to be treated.

Embodiments include a vacuum airlift system for treating an aqueous effluent including an upflow liquid column, where the upflow liquid column is configured to retain a fluid, a fluid inlet, the fluid inlet being fluidly coupled with the upflow liquid column, where the fluid inlet is positioned at about the bottom of the upflow liquid column, a downflow liquid column, a fluid outlet, the fluid outlet being fluidly coupled with the downflow liquid column, wherein the fluid outlet is positioned at about the bottom of the downflow liquid column, and a plurality of moving bed biofilm reactors, the plurality of moving bed biofilm reactors being positioned in the upflow liquid column or the downflow liquid column.

Embodiments include a vacuum airlift system for treating an aqueous effluent including an upflow liquid column, where the upflow liquid column is configured to retain a fluid, a fluid inlet, the fluid inlet being fluidly coupled with the upflow liquid column, where the fluid inlet is positioned at about the bottom of the upflow liquid column, a downflow liquid column, a fluid outlet, the fluid outlet being fluidly coupled with the downflow liquid column, wherein the fluid outlet is positioned at about the bottom of the downflow liquid column, and a plurality of moving bed biofilm reactors, the plurality of moving bed biofilm reactors being positioned in the upflow liquid column or the downflow liquid column.

A Multi-Stage Wastewater Treatment and Hydroponic Farming Device comprises a compact basin, a moving bed biofilm reactor (MBBR), a modified wetland material, at least one microbial fuel cell (MFC) and a distributor. The MBBR and modified wetland material are disposed within the basin. Openings in the distributor retain hydroponic plants. In one example, wastewater enters through the MBBR which performs primary treatment of wastewater. Treated wastewater is further treated by modified wetland material and the MFC which generates electrical energy that supplies other components. Treated wastewater is pumped through the distributor and processed by hydroponic plants which extract growth inducing nutrients from the treated wastewater. Resultant water treated by the device is selectively recycled through various parts of the device or extracted from the device and used for other purposes. In one example, multiple devices are deployed in an area thereby providing self-sustaining, efficient water treatment and farming functionality.

Tertiary wastewater treatment wherein a tank is divided into a primary separation chamber, an aerobic chamber, and a clarifier chamber. Media are preferably disposed in the aerobic chamber and most preferably, the media can be contained in one or more porous containers. A recirculation path is preferably provided between the aerobic chamber and the primary separation chamber. In one embodiment, the recirculation between the two chambers can be powered by an air lift pump.

Disclosed is a reactor for treating, particularly by hydrothermal carbonization, sludge containing organic matter, including, with: a vessel (100) including an inner chamber arranged to receive the sludge and to form a path of travel for the sludge adapted to allow for circulation of the sludge, a sludge inlet (1) arranged to introduce the sludge into a sludge introduction area of the inner chamber, a sludge outlet (11) arranged to discharge at least part of the sludge contained in the inner chamber, and a steam inlet (3) arranged to inject steam in a steam injection zone of the inner chamber along a steam injection direction, the steam injection direction being different from a sludge circulation direction in the steam injection zone along the circulation path, the steam injection zone being separated from the sludge introduction zone.

A water treatment device (1) is provided with: a biological treatment tank (2) for storing a stored liquid (5); a pump (7) for generating a circulating liquid flow formed of the stored liquid (5); a gas-liquid two-phase flow generation device (8) for using the circulating liquid flow to suction a gas containing oxygen, whereby a gas-liquid two-phase flow in which the gas is dispersed in the circulating liquid flow is generated; and a nozzle (12) for injecting the gas-liquid two-phase flow into the biological treatment tank (2). Such a water treatment device (1) is capable of adequately circulating the stored liquid (5) in the biological treatment tank (2), adequately aerating the stored liquid (5), and adequately treating the stored liquid (5).

A water treatment device (1) is provided with: a biological treatment tank (2) for storing a stored liquid (5); a pump (7) for generating a circulating liquid flow formed of the stored liquid (5); a gas-liquid two-phase flow generation device (8) for using the circulating liquid flow to suction a gas containing oxygen, whereby a gas-liquid two-phase flow in which the gas is dispersed in the circulating liquid flow is generated; and a nozzle (12) for injecting the gas-liquid two-phase flow into the biological treatment tank (2). Such a water treatment device (1) is capable of adequately circulating the stored liquid (5) in the biological treatment tank (2), adequately aerating the stored liquid (5), and adequately treating the stored liquid (5).

A method and device used for treating effluents by the biological aerobic activated sludge process with hydrodynamic separation, sludge collection, internal sludge recirculation and atmospheric air or oxygen dissolution functions implemented by a device that accumulates the functions of solids retention and gas dissolution in the biological reactor, increasing the hydraulic load capacity of the secondary settler, as well as the load absorption capacity of the biological reactor, thus almost doubling the treatment capacity in relation to a conventional activated sludge process.