A fluid management system including an inlet configured to receive pre-processed fluid is provided. The system includes a filtering apparatus configured to remove contaminants from the pre-processed fluid. The filtering apparatus includes a plate having a first opening. A first manifold pipe is disposed on the plate and includes one or more perforations and a second opening at least partially aligned with the first opening. A second manifold pipe is disposed on the plate and includes one or more perforations. Filter media is disposed between the first manifold pipe and the second manifold pipe and is configured to separate the contaminants from the pre-processed fluid. The system also includes an outlet coupled to the second manifold pipe to receive processed fluid from the filtering apparatus.

A method for producing a woven personal respirator mask includes providing a plurality of warp ends into an electronic woven label loom, programming the loom to weave the warp ends into a sheet having a repeating mask pattern in the weave direction, the mask pattern comprising an edge border having a tight weave and defining therein a filter section, the filter section having a tubular weave to define an outer layer and an inner layer, at least one of the outer layer and an inner layers comprising a filter weave, and at least one intermediate interlock fastening at least a point of the outer layer to an opposing point on the inner layer, and cutting the sheet to separate the repeating mask pattern into individual mask parts with a hot-wire slitter.

A polyphenylene sulfide short fiber has a monofilament fineness of 0.70 to 0.95 dtex, a strength of 4.5 to 5.5 cN/dtex, a fiber length of 20 to 100 mm, and a melt flow rate (MFR) value of 200 to 295 g/10 min. The polyphenylene sulfide short fiber enables improvements to be made in the dust collection performance and mechanical strength without impairing the fiber productivity or felt productivity.

An apparatus and a method are provided for a heating, ventilation, and air conditioning (HVAC) air filter to remove airborne molecular contaminants and volatile organic compounds (VOCs) from air within building spaces. The air filter comprises a support frame having a shape and size suitable to orient the air filter within a HVAC system. A compound filter medium is retained within the support frame to remove the airborne molecular contaminants and VOCs from air flowing through the HVAC system. A portion of the first media layer is pleated and may comprise a combination of media layers configured to exhibit a relatively high filtration efficiency and a low air pressure drop across the filter medium. A second portion of the filter medium is coupled to the first portion and maintains a uniform distribution of the pleats with the first portion.

A filter bag is disclosed that comprises a porous membrane having a strength in the transverse direction to improve durability. There is a filter assembly for filtering particulates from a gas stream comprising a support substructure and a filter bag at least partially surrounding the support substructure. The filter bag comprises a porous membrane having a upstream surface exposed to the gas stream. The porous membrane is lightweight and has a structure to collect the particulates on the upstream surface. In particular, the porous membrane has a bubble point of 0.06 MPa or more and has a strength in a transverse direction that is 100N/m or more. Other filter bags disclosed comprise a laminate comprising a porous membrane having a bubble point of 0.06 MPa or more and a second layer that acts as a sacrificial material.

A filter bag is disclosed that comprises a porous membrane having a strength in the transverse direction to improve durability. There is a filter assembly for filtering particulates from a gas stream comprising a support substructure and a filter bag at least partially surrounding the support substructure. The filter bag comprises a porous membrane having a upstream surface exposed to the gas stream. The porous membrane is lightweight and has a structure to collect the particulates on the upstream surface. In particular, the porous membrane has a bubble point of 0.06 MPa or more and has a strength in a transverse direction that is 100 N/m or more. Other filter bags disclosed comprise a laminate comprising a porous membrane having a bubble point of 0.06 MPa or more and a second layer that acts as a sacrificial material.

A rapidly deployable protective facemask includes a resilient member that self-expands to a deployed configuration when the mask is removed from its container.

An apparatus and a method are provided for a heating, ventilation, and air conditioning (HVAC) air filter to remove airborne molecular contaminants and volatile organic compounds (VOCs) from air within building spaces is disclosed. The air filter comprises a support frame having a shape and size suitable to orient the air filter within a HVAC system. A compound filter medium is retained within the support frame to remove the airborne molecular contaminants and VOCs from air flowing through the HVAC system. A method of removing airborne molecular contaminants and volatile organic compounds (VOCs) from air is disclosed that includes an operation of coupling a first media layer, comprising uniformly disposed pleats, with a second media layer, comprising a woven fiber material, so as to form a compound filter medium.

Provided is a melt-blown nonwoven fabric including a propylenic polymer that shows at least one peak top at a position of a molecular weight of 20,000 or higher and at least one peak top at a position of a molecular weight of less than 20,000 in a discharge curve obtained by gel permeation chromatography, and has an intrinsic viscosity [] of from 0.50 (dl/g) to 0.75 (dl/g).

Provided is an adsorptive liquid filter including: a support tube having a hollow portion formed in a tubular shape and having a plurality of throughholes penetrating the hollow portion from an outer circumferential surface thereof; and an adsorptive membrane which is enclosed by the outer circumferential surface of the support tube and adsorbs foreign substances contained in contaminated liquid, the adsorption membrane including: a support member having a plurality of first pores; and a first adsorptive member which is stacked on the support member and has a plurality of second pores formed therein and is made by accumulating ion exchange nanofibers for adsorbing foreign substances.