A subsea fluid processing system which receives a wellstream flow. The subsea fluid processing system includes a pressure control device which regulates a pressure of the wellstream flow, a gas-liquid separator unit which receives the wellstream flow downstream of the pressure control device and which provides a liquid stream and a gas stream, a first membrane separator which receives the gas stream and which provides a retentate stream and a permeate stream, a compressor which receives the permeate stream and which provides a compressed permeate stream, and a discharge cooler which receives the compressed permeate stream and which provides a cooled compressed permeate stream for injection into a subsurface reservoir. A density of the cooled compressed permeate stream is higher than a density of the compressed permeate stream.

A membrane element having a filtration main body, a header (a water collection portion) that collects treated water from an end portion of the filtration main body and a treated water lead-out portion that leads out the treated water is used. The treated water lead-out portion is connected to a tubular peripheral wall of a water collection pipe that collects treated water solid-liquid-separated by the membrane element, and communicates with an inside of the tubular peripheral wall. The tubular peripheral wall has a thick portion that is thicker in a horizontal direction at an upper-side peripheral wall portion located at an upper side (or at a lower-side peripheral wall portion located at a lower side) in the radial direction of the tubular peripheral wall, and a connecting hole that penetrates the thick portion.

A hollow fiber membrane module includes a pressure vessel, a plurality of hollow fiber membrane elements arranged in series inside the pressure vessel, and a connector that connects the hollow fiber membrane elements to each other. Each of the hollow fiber membrane elements includes a plurality of hollow fiber membranes, and a double-core tube extending in a longitudinal direction of the plurality of hollow fiber membrane elements. The connector includes a first channel and a second channel that do not communicate with each other. Between the hollow fiber membrane elements, the outer channels of the hollow fiber membrane elements are connected to each other through the first channel, the inner channels of the hollow fiber membrane elements are connected to each other through the second channel, and hollow portions of the hollow fiber membranes communicate with the inner channels through the second channel.

A tangential flow filtration manifold takes a modular form for interconnection in a manifolded arrangement for aggregating a total filtration area of the aggregate filter (membrane) surface. A plurality of modular TFF cassette filters may be or stacked on the TFF manifold such that it allows the number of interconnected filters, as well as the membrane surface area within each cassette, to be readily reconfigured. A single output, or filtrate connection on the TFF manifold simplifies fluidic plumbing connections for directing and gathering the filtrate (permeate) produced as output.

Hemofilters for in vivo filtration of blood are disclosed. The hemofilters disclosed herein provide an optimal flow of blood through the filtration channels while maintaining a pressure gradient across the filtration channel walls to enhance filtration and minimize turbulence and stagnation of blood in the hemofilter.

An electrochemical separation device includes a first electrode, a second electrode, a cell stack including alternating depleting compartments and concentrating compartments disposed between the first electrode and the second electrode, an inlet manifold configured to introduce a fluid to one of the depleting compartments or the concentrating compartments an outlet manifold, and one or more of a fluid flow director disposed within the inlet manifold and having a surface configured to alter a flow path of the fluid introduced into the inlet manifold and direct the fluid into the one of the depleting compartments or the concentrating compartments, and a second fluid flow director disposed within the outlet manifold and having a surface configured to alter a flow path of the fluid introduced into the outlet manifold via one of the depleting compartments or the concentrating compartments.

An automated modular filtration system, particularly for low volume tangential flow filtration processes, comprises a plurality of filtration modules formed as separate assemblies and at least one control unit for jointly controlling filtration processes of individual filtration units. Each filtration module contains at least one individual filtration unit for executing a filtration process independent of the other filtration units, first input ports for receiving a first type of fluids, second input ports for receiving a second type of fluids, and exit ports for outputting unused system fluids. First type fluids are process fluids are specific to the filtration processes executed in individual filtration units. Second type fluids are system fluids not specific to filtration processes executed in the individual filtration units. The second input and exit ports establish inter-module connections so system fluids can be forwarded from one filtration module to an adjacent filtration module of the filtration system.

A modular element for making reverse osmosis filtering devices includes: at least one first container and a second container, each of which is provided with a tubular lateral wall, with a bottom plate which closes a first axial end of said lateral wall, with an inlet, with a first outlet and with a second outlet, the first and second containers being arranged so that the respective lateral walls are arranged adjacent and have mutually parallel central axes, and a scavenging duct which connects the second outlet of the first container with the inlet of the second container, the first container, the second container and the scavenging duct are obtained as a single monolithic body.

A cleaning method of a membrane filtration system in which a plurality of modules including an inlet side region and an outlet side region separated by a filtration membrane are connected in parallel by a common blow header pipe in the inlet side region, the method including backwashing and blowing in which after the backwashing is started, gas is introduced into the plurality of modules through a blow header pipe. The method further includes forming, before the blowing is started, a gas layer across an entire longitudinal direction of the blow header pipe.

A two-stage filter enclosed within a single vessel is provided. The two-stage filter is provided in the form of the vessel having a first filtration stage configured to capture particles of a first size, and a second filtration stage downstream of the first filtration stage and in fluid communication with the first filtration stage configured to capture particles of a second size, wherein the first size is larger than the second size. The first filtration stage may comprise a porous media. The second filtration stage may comprise one or more membrane filters.