An object of the present invention is to provide a water treatment system in which explosions can be prevented even when filtering water to be treated that is able to generate flammable gas. A water treatment system according to an embodiment of the present invention includes a water-to-be-treated tank which stores water to be treated, a crossflow-type filtration membrane module which filters the water to be treated, a supply passage through which the water to be treated is supplied to the filtration membrane module from the water-to-be-treated tank by using a supply pump, and a recirculation passage through which the water to be treated is recirculated from the filtration membrane module to the water-to-be-treated tank. The supply passage is provided with an aspirator which mixes a gas with the supplied water to be treated, the gas being recirculated through the recirculation passage to the water-to-be-treated tank together with the water to be treated. The water-to-be-treated tank has an upper space provided above the liquid surface of the stored water to be treated, the upper space being hermetically filled with an inert gas. The water-to-be-treated tank is further provided with a gas transport passage through which the inert gas is supplied from the upper space to the aspirator.

Methods and apparatus for providing water with a selectable total dissolved solids content. The apparatus includes a reverse osmosis filter system to provide filtered water having a dissolved solids content less than the selectable total dissolved solids content and for mixing water having a dissolved solids content exceeding the selectable total dissolved solids content with the filtered water in a ratio to provide water with the selectable total dissolved solids content. Various embodiments are disclosed.

A method of treating fluids, including for recovery of water apart from impurities or undesired matter, utilizes application of shock waves to the fluids.

This invention is directed to filtration system, filtration apparatus and methods of use thereof, wherein the filtration system comprises a solid support, perylene diimide based membrane layer and a polymer, specifically a Nafion polymer. The system and apparatus of this invention enables filtration of solutes such as: dyes, salts, heavy metal ions, pharmaceuticals and small organic molecules.

In order to improve the lifespan of the semi-permeable membrane or the yield of the reverse osmosis system in the treatment of drinking water by means of reverse osmosis, the invention provides a device for treating drinking water with at least one reverse osmosis vessel which is divided into at least two chambers by at least one semi-permeable membrane, wherein a first chamber has an inlet for the water to be treated and an outlet for the concentrate, and the second chamber has an outlet for the treated water, wherein the device comprises at least one pressure vessel which is connected to the outlet for the treated water via a line, wherein the device is designed in such a way that, in an idle state, treated water flows out of the pressure vessel, through the semi-permeable membrane and into the first chamber.

A dialyzer and a method of manufacture thereof, wherein the dialyzer includes a tubular dialyzer housing in the interior of which a plurality of capillaries each extending in the longitudinal direction of the dialyzer housing and being juxtaposed transversely to the longitudinal direction is arranged, with a filler having a volume-increasing property being arranged between the inner wall of the dialyzer housing and the capillaries.

The invention relates to a filtration system for filtering a fluid containing solid particles. The filtration system comprising a deformable wall defining a chamber interior to the wall, and a tubular shaped membrane arranged in the chamber. Further, the system is arranged for periodically deforming the chamber wall inwardly and outwardly, respectively, for filtering a fluid that is present in the chamber, exterior to the membrane.

A gas separation system includes: first, second, and third gas separation membrane units. A first retentate gas line connects a retentate gas discharge port of the first unit and gas inlet port of the second unit. A first permeate gas line connects a permeate gas discharge port of the first unit and gas inlet port of the third unit. A feed gas mixture supply line is connected to a gas inlet port of the first unit, and provided with first compression elements. The first permeate gas line is provided with second compression elements. The permeate gas discharge port of the second unit is connected by a second permeate gas line to the suction side of the first compression elements in the feed gas mixture supply line. A retentate gas discharge port of the third unit is connected by a third retentate gas line to the first retentate gas line.

A submerged offshore reverse osmosis desalination apparatus and method uses desalinated product water from the apparatus and an onshore cooler or heat exchanger to provide or improve the cooling of an onshore Rankine Cycle heat engine.

Methods and procedures for operating biologics or biopharmaceutical purification protocols where disparate process steps requiring significantly different process parameters (e.g., pressure and flow rate) as continuous processes without the use of surge tanks, holding tanks or similar.