The present invention provides intermittent-bubbling equipment used while being immersed in a liquid. The intermittent-bubbling equipment includes a tubular casing vertically disposed; and a plurality of partition walls disposed substantially parallel to an axial direction in the casing, and configured to define a gas introducing chamber, a gas inducing chamber, and a gas discharging chamber. The gas introducing chamber and the gas inducing chamber communicate with each other at a top of the casing, and the gas inducing chamber and the gas discharging chamber communicate with each other at a bottom of the casing. An upper side of the gas introducing chamber and an upper side of the gas inducing chamber are closed by a lid plate, and a lower side of the gas inducing chamber and a lower side of the gas discharging chamber are closed by a bottom plate. A cross-sectional area of the gag introducing chamber may be greater than a cross-sectional area of the gas discharging chamber. An upper edge of a connecting hole between the gas inducing chamber and the gas discharging chamber may be substantially horizontal. A bottom plate that closes the gas inducing chamber and a bottom plate that closes the gas discharging chamber may be formed by a single flat member.

The present invention provides an electrolysis device capable of recovering lithium from seawater, brine, recycled waste liquid, or the like containing lithium ions, and capable of generating a carbon compound from carbon dioxide. The electrolysis device including: a first electrode part; a second electrode part; a lithium ion exchanger; a first electrolyte solution; a second electrolyte solution containing lithium ions; and a first gas supply part capable of supplying a first carbon gas containing carbon dioxide, in which the first electrode part includes a catalyst layer, and the catalyst layer is in contact with the first electrolyte solution, the second electrode part is opposed to the first electrode part with the lithium ion exchanger interposed between the second electrode part and the first electrode part, and is in contact with the second electrolyte solution, the lithium ion exchanger is provided so as to partition the first electrolyte solution and the second electrolyte solution, and allows the lithium ions to selectively pass from the second electrolyte solution toward the first electrolyte solution, and carbon dioxide in the first carbon gas is reduced to produce a carbon compound different from carbon dioxide by applying a voltage between the first electrode part and the second electrode part in a state where the first carbon gas is supplied from the first gas supply part toward the first electrode part.

A multi-element filtration vessel included spaced beams for supporting and/or aligning filtration elements from below. The filtration elements have bottom ends adapted to rest upon adjacent support beams and also to extend between them to form a cavity that can capture feed fluid and an aeration gas and conduct it into the filtration element. In another aspect, a multi-element filtration vessel has removable aerators mounted on a projection on the wall of the filtration vessel.

A gas separation module and assembly for housing ceramic tubular membranes. The module includes a plurality of tubes containing the ceramic tubular membranes. The tubes are arranged parallel to one another and are supported by tube sheet plates at each end. Gas-tight seals surround each membrane, preventing a permeate gas within the inner lumen of the membrane from mixing with a feed or residue gas in the tube interior. The module also contains a gas distribution pipe for introducing feed gas into, and withdrawing residue out of, the module. This configuration allows for ceramic tubular membranes to be modularized for use in an assembly that carries out many types of gas separations.

A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

The present invention relates to a submerged hollow fiber membrane module that includes a partition membrane having a slanted slit-shaped opening, and thus capable of not only improving operating efficiency of a hollow fiber membrane module by accelerating the water flow, but also allowing easy discharge of highly concentrated raw water around the hollow fiber membrane to the outside of the module during a reverse wash process.

A reciprocating concentration system includes: a gas output device, first and second liquid accommodating tanks, a selection device, first and second liquid sensors and a computing control device. The gas output device is controlled to output pushing gas through a first gas channel or a second gas channel. The first liquid accommodating tank is in communication with the first gas channel. The second liquid accommodating tank is in communication with the second gas channel. The selection device is in communication with the first liquid accommodating tank and the second liquid accommodating tank through a first liquid channel and a second liquid channel, respectively, and has a filtered liquid outlet. The first liquid sensor and the second liquid sensor are disposed at the first liquid channel and the second liquid channel, respectively. The computing control device is connected to the gas output device and the first and the second liquid sensors.

A filter plate device has an inlet and an outlet where the filter plate has a polymeric framework having a filtration zone and a membrane bed of one or more membranes bonded and sealed to the polymeric framework in said filtration zone with a thermosetting plastic, where a flow distributor is placed within the membrane bed such that fluid flows evenly through the membrane bed.

Algae harvesting and cultivating systems and methods for producing high concentrations of algae product with minimal energy. In an embodiment, a dead-end filtration system and method includes at least one tank and a plurality hollow fiber membranes positioned in the at least one tank. An algae medium is pulled through the hollow fiber membranes such that a retentate and a permeate are produced.

A multi-stage direct contact membrane distillation (MS-DCMD) system and a process for using the MS-DCMD are provide. The MS-DCMD includes a plurality of modules, wherein each module includes a feed chamber fluidically coupled to a feed line and a carrier gas line, wherein the feed line introduces a liquid feed into the feed chamber from a liquid feed tank, and wherein the carrier gas line introduces a carrier gas into the feed chamber. Each module includes a cold chamber fluidically coupled to a cold-water feed line and a cold-water return line, wherein cold water is circulated through the cold chamber. Each module further includes a membrane separating the feed chamber from the cold chamber, wherein the membrane allows transportation of vapor from the feed chamber to the cold chamber while blocking liquid from moving from the feed chamber to the cold chamber.