A fiber filtering apparatus includes: an enclosure including an upper box and a lower box communicating with the upper box; a strainer installed in the upper box along a longitudinal direction; a plurality of fiber yarn media configured to be fixed to upper and lower fixing means each coupled to upper and lower parts of the strainer; a plurality of fiber ball media configured to be embedded in the lower box to form a second filtering layer; a first pipe configured to be formed on one side wall on the lower part of the upper box and introduced with raw water during filtration and drain backwashing water during backwashing; and a second pipe formed on one side wall on a lower part of the lower box and drain filtered water during the filtration and introduced with washing water during the backwashing.

The present invention relates to a multistage fiber filtering apparatus capable of selectively filtering depending on turbidity of raw water, in which a first filtration mode where the raw water passes through a fiber ball medium, a second filtration mode where the raw water passes through a fiber yarn medium, or a third filtration mode where the raw water passes through both of the fiber yarn medium and the fiber ball medium may be selectively operated.

A fiber filtering apparatus includes: an enclosure including an upper box and a lower box communicating with the upper box; a strainer installed in the upper box along a longitudinal direction; a plurality of fiber yarn media configured to be fixed to upper and lower fixing means each coupled to upper and lower parts of the strainer; a plurality of fiber ball media configured to be embedded in the lower box to form a second filtering layer; a first pipe configured to be formed on one side wall on the lower part of the upper box and introduced with raw water during filtration and drain backwashing water during backwashing; and a second pipe formed on one side wall on a lower part of the lower box and drain filtered water during the filtration and introduced with washing water during the backwashing.

The invention relates to a filter unit (1, 19), having: at least one warp-knitted spacer (3) which comprises a first and a second cover layer (4; 5) having in each case a multiplicity of openings (6) which are delimited by peripheral regions (7), wherein threads (8) extend from the peripheral regions (7) of the first cover layer (4) to peripheral regions (7) of the second cover layer (5), and wherein the at least one warp-knitted spacer is rolled, twisted, and/or at least in one portion is compressed.

A separator prevents microplastics from entering the environment by regenerating the pressure consumption of filters for removing microplastics in effluent from any source but in particular removing microfibers from domestic and commercial washing machine wastewater, industrial textile processing waste and roadside runoff. The separator separates microplastics from an effluent, and includes a chamber with an inlet and an outlet, a sieve structure forming a permeable barrier between the inlet and the outlet to filter the effluent, and a pump in fluid communication with the outlet of the chamber.

Method and apparatus are provided for treating and removing particulate matter from fluid or treating and removing fluid from a recoverable particulate matter from fluid circulating into, through and out of an industrial operation, and for washing a disposable cartridge filter used therein. The influent fluid is maintained at a flow rate such that the differential pressure across the cartridge filter is no greater than 10 psi to prevent the buildup of non-porous filter cake. A pressure detecting mechanism and method is also provided to detect the amount of deposited particulate matter inside the cartridge filter, so that an operator can determine whether the cartridge filter should be taken out to remove or recycle the deposited particulate matter.

A modular backwash assembly and method for using the same is disclosed, the modular backwash assembly comprises a filter brick body, an ultrasonic generator and an ultrasonic connecting component, the filter brick body is provided at an upper portion with a square trench and a cover, the square trench is provided with a plurality of stiffeners and fillers, and a conductive channel is provided on the periphery of the square trench and is provided with an ultrasonic conductive medium therein. The invention has the advantages of firm structure and durable, the gas distribution uniformity may be increased up to 96% and the turbidity average is below the specification 10 NTU.

A screen decanter for decanting liquid from a reservoir, comprising at least one rack comprising screens and baffles forming the sides of a cavity; a frame attached to the screens and baffles and providing a barrier so that liquid cannot pass from outside into the cavity without passing through the screens; a patterned perforated drain pipe inside the cavity and leading to an opening through which liquids may drain out from the cavity. The pattern of the openings counteracts the hydrostatic head within the rack such that flow through the screens is uniform at all depths of immersion in the liquid reservoir. Preferably, the screens have a porosity of about 50 micrometers.

A wastewater filter includes a vessel having a bottom and a side wall that cooperate to define a filter space. A first filter media is positioned within the filter space to define a first media layer, and a second filter media different from the first filter media is positioned within the filter space above the first media layer to define a second media layer, the first media layer and the second media layer cooperating to define an interface plane. A draft tube is positioned within the second media layer and has a first end positioned a first non-zero distance above the interface plane, and a second end disposed a second non-zero distance from a top surface of the second media layer. A backwash fluid line is positioned to inject a backwash fluid into the first filter media, and a backwash gas line is positioned to inject a backwash gas into the draft tube.

A separator prevents microplastics from entering the environment through regenerating the pressure consumption of filters for removing microplastics in effluent from any source but in particular removing microfibers from domestic and commercial washing machine wastewater, industrial textile processing waste and roadside runoff. A separator includes a chamber with an inlet and an outlet, a sieve structure forming a permeable barrier between the inlet and the outlet to filter the effluent, and a pump in fluid communication with the outlet of the chamber.