An assembly (1) which is intended for use at an area (31, 32) for allowing a fluid to pass therethrough comprises a filter (10) for blocking items from passing through the area (31, 32) along with the fluid, and at least one anti-biofouling source (20) for emitting ultraviolet light during operation thereof for realizing anti-biofouling of at least a portion of the filter (10). The filter (10) comprises a filter body provided with apertures, wherein the actual filter body is at least partially transparent to the ultraviolet light, so that anti-biofouling of the entire filter (10) may be guaranteed, even in case the anti-biofouling source (20) is positioned at only one side (15, 16) of the filter (10) and/or is integrated in the filter (10).

The present invention relates to a high-intensity ultraviolet light emitting diodes (6) (UV-LED) device (1) for preventing biofouling formation in a system for subsea operation of a target fluid. Further, the present invention discloses such device for coupling or integration into a subsea treatment system and to a process using such device.

Photocurable compositions and methods of preparation and use of such compositions. More particularly, photocurable compositions useful for forming topographical features on surfaces such as membrane surfaces. Methods of forming topographical features on a membrane surface using photocurable compositions.

An assembly (1) which is intended for use at an area (31, 32) for allowing a fluid to pass therethrough comprises a filter (10) for blocking items from passing through the area (31, 32) along with the fluid, and at least one anti-biofouling source (20) for emitting ultraviolet light during operation thereof for realizing anti-biofouling of at least a portion of the filter (10). The filter (10) comprises a filter body provided with apertures, wherein the actual filter body is at least partially transparent to the ultraviolet light, so that anti-biofouling of the entire filter (10) may be guaranteed, even in case the anti-biofouling source (20) is positioned at only one side (15, 16) of the filter (10) and/or is integrated in the filter (10).

A process for inhibiting formation of calcium scale in a reverse osmosis desalination membrane during desalination involving desalinating an aqueous salt solution comprising water, sodium chloride, calcium chloride, and sodium bicarbonate with the reverse osmosis desalination membrane, while concurrently irradiating the aqueous salt solution with a UV light source that emits UV light with a wavelength of 250-400 nm. Scale formation is inhibited by treating a salt solution with the UV light in a continuous or a non-continuous process.

In particles removal with extremely high filtration efficiency and the ability to block submicron airborne particles by a sieving mechanism is provided. This novel nanoporous filter advantageously combines extremely high transmittance for visible light and ultraviolet light, reusability after cleaning or disinfection by ultraviolet irradiation or simple washing, a customizable sieving pore size ranging from a few nanometers to 500 nanometers, and the ability to carry bactericidal, virucidal or other reagents or particles on the nano or micro scale.