Abstract: A system designed to control and filter runoff water in storm drains is presented. Drain water frequently carries trash, organic matter, suspended solids, hydrocarbons, metals, nutrients and bacteria collected from streets and parking lots into a storm drain inlet, which enters storm water drain pipe systems. The present invention supplies a series of baffle boxes inserted in the drain water stream with a final box possessing an upflow filter comprising filtration media and filter cartridges. The system can also support a storm flow bypass that directs high-flow storm runoff water directly to the outlet to protect the filter system.

Abstract: An apparatus for performing liquid chromatography includes a chromatography column, and an insulating member surrounding the chromatography column wherein the insulating member is formed from a vacuum chamber surrounding the chromatography column. Another apparatus for performing liquid chromatography includes a chromatography column, and an insulating member surrounding the chromatography column, wherein the insulating member includes aerogel. Also described is a method of insulating a chromatography column comprising forming a jacket surrounding the chromatography column, and creating a vacuum chamber in an area between the jacket and the chromatography column.

Abstract: The present invention relates to a chemical feeder that includes a support plate that is positioned within the housing chamber of the chemical feeder, in which one or more extensions extend upward from an upper surface of the base plate of the support plate. The extensions can, with some embodiments, be in the form of peg extensions, arcuate extensions that can together define an impeller pattern, or a spiral extension. A distributor head having a plurality of distributor head apertures and at least one dome hole extends up through a support plate aperture in the base plate of the support plate, and distributes liquid horizontally and vertically relative to the base plate. The horizontally and vertically distributed liquid contacts a solid chemical material that is supported above the support plate, so as to form a treated liquid that includes dissolved chemical material.

Abstract: A chemical feeder includes a support plate that is positioned within the housing chamber of the chemical feeder is described. The support plate includes a base plate having an upper surface that has one or more extensions that extend upward from the upper surface. The extensions can, with some embodiments, be in the form of arcuate extensions that can together define an impeller pattern or a spiral extension that defines a spiral channel. The upper surface of the base plate and/or the one or more extensions are adapted to support a solid chemical material thereon. The support plate further includes a plurality of arcuate channel apertures or spiral channel apertures that extend through the base plate. A feed liquid introduced into the housing chamber flows through at least one of the plurality of arcuate/spiral channel apertures and contacts the solid chemical material to form a treated liquid.

Abstract: The present invention relates to apparatuses, systems, and methods to cleanse water contaminated with hydrocarbons, hydraulic fracturing fluids, volatile organic compounds, sulfurous compounds, crude oil, and other petroleum products. The products recovered with the invention can be returned to the source, stored, transported, sold, or otherwise reused.

Abstract: A filter has first and second fittings, a permeable filter medium, and a housing. The housing defines u fluid flow path within the housing between the first and second fittings, and the permeable filter medium is arranged in the fluid flow path to remove one or more substances from a fluid flowing along the fluid flow path. A reservoir is positioned in an upper region of the housing and includes a wall surrounding the first and second fittings of the filter. Each of the fittings has a topmost portion and the wall of the reservoir has a topmost portion, the topmost portion of each filter fitting being at or below the topmost portion of the reservoir wall. A filter arrangement may include a filter and a manifold assembly having first and second fittings which may be sealingly coupled to or uncoupled from the first and second fittings of the filter.

Abstract: A filter element for attachment to a filter cap includes a generally cylindrical filter media defining an axial centerline. The filter element also includes an upper plate attached to the filter media and rotationally attacked to the filter cap such that the upper plate and the filter media are rotational about the centerline with respect to the filter cap. The filter element further includes a bottom plate attached to the filter media opposite from the rotational attachment of the upper plate to the filter cap, and an orientation structure extending from the bottom plate radially from the centerline.

Abstract: An apparatus for removal of contaminants from water includes an openable enclosure with one or more inlet openings through the sides for admitting water and debris into the enclosure. Intake modules attached to the outer surface of the enclosure draw water from the enclosure through an intake conduit and out an upper port in the side of the intake module. A pump module adjacent to the intake module has a side port corresponding to the upper port of the intake module so that water is drawn by a pump from the intake module and exhausted through an outlet channel of the pump module. A snorkel attached to the pump module with its lower end located adjacent to the pump propeller draws air down into the snorkel and into a fitting disposed below the pump propeller for injection into the enclosure.

Abstract: A hemodialysis machine including a main body and a door, the door being capable of opening and closing relative to the main body so as to receive and retain a disposable cartridge therebetween, the machine further including a controller and a pneumatic pump, the cartridge having a chassis with a platen side covered by a first deformable membrane and a door side covered by a second deformable membrane, the chassis and membranes defining a dialysate flow path for delivering a flow of dialysate solution through a dialyser, the main body having a platen for in use sealing against the platen side of the cartridge and the door having an interface plate for in use sealing against the door side of the cartridge, the pneumatic pump being fluidically connected to an interface plate cavity between the interface plate and the cartridge by a pneumatic supply line, the pump being controlled by the controller to selectively generate a vacuum in the platen cavity so as to affix the cartridge to the door prior to operation of

Abstract: A conical solid-liquid separator includes a separator body, a clean water collection tank and a wastewater collection tank provided at an upper surface of the separator body, a conical sieves provided at the top of the clean water collection tank, an arc cone sheathed on the top of the conical sieves and having an upper end connected an inlet pipe. With the installation of the conical sieves, wastewater flows from the inlet pipe into the arc cone and then passes through the arc cone to disperse the water flow and enters into the conical sieves for filtering. The conical solid-liquid separator and its operating process are simplified to reduce water consumption and improve the processing efficiency. In addition, the conical solid-liquid separator comes with a simple and compact structure and reduces the power consumption significantly.

Abstract: A backwash arrangement for cleaning a cylindrical filter screen includes a cylindrical filter screen within which extends an axial central conduit. A number of radial branch conduits extend outwards from the central conduit towards the cylindrical filter screen, each provided with a spring-loaded nozzle arrangement. The spring-loaded nozzle arrangement is biased into contact with the cylindrical filter screen, and includes a nozzle opening for passing across the cylindrical filter screen, and a pair of wheels deployed on opposing sides of the nozzle opening for rolling engagement with the cylindrical filter screen.

Abstract: A filter cartridge has a shell defining an upper portion with an upper interior volume and a lower portion with a lower interior volume. The cartridge is for use in gravity-fed water treatment systems having an upper untreated supply and a lower filtered container. A hydrophilic porous particulate carbon powder block filter in a polymeric binder is disposed in the cartridge. The filter has a central opening and is open on both ends. The top end of the block is fitted with an air vent tube. The lower end of the block is fitted into a rubber gasket to direct water flow into the lower container. As water flows through the filter cartridge, air is vented through the block filter central opening and out through the vent tube.

Abstract: A thin film composite membrane including a porous support and a thin film polyamide layer characterized by having a dissociated carboxylate content of at least 0.45 moles/kg at pH 9.5 and a method for making a composite polyamide applying a polar solution comprising a polyfunctional amine monomer and a non-polar solution comprising a polyfunctional amine-reactive monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is characterized by the non-polar solution comprising at least 0.025 wt % of an acid compound including at least one carboxylic acid moiety and at least one amine-reactive moiety selected from acyl halide and anhydride.

Abstract: A multi-layer, fluid transmissive structure is provided that comprises first and second fiber layers each comprising a plurality of polymeric fibers bonded to each other at spaced apart contact points. The polymeric fibers of these fiber layers have diameters greater than one micron and collectively define interconnected interstitial spaces providing tortuous fluid flow paths through the first and second fiber layers. The structure also comprises a plurality of nanofibers disposed intermediate at least a portion of the first fiber layer and at least a portion of the second fiber layer.

Abstract: A poly(arylethersulfone) polymer comprising recurring units derived from at least one aromatic dihalocompound comprising at least one —S(?O)2— group and at least one diol (D) comprising at least one cycloaliphatic moiety (M).

Abstract: A filtering solid includes a body, the body includes at least two surfaces defined thereon, and at least one accommodating room is formed thereon. The accommodating room penetrates through the two surfaces, and at least one wall surface is formed at an interior of the accommodating room. The body is a cube or a cylinder; the accommodating room is a circular through hole or a square through hole. The filtering solid attains the purposes of reaching a maximum storage of water and increasing an adhering area of nitrifying bacteria in a limited volume.

Abstract: The invention provides an organic-inorganic porous membrane which includes metal organic silica nano-particles impregnated in a polymer. The polymer includes a property of generating porous membrane using a phase inversion technique. The invention also provides a method for preparing the organic-inorganic porous membrane.

Abstract: Processes for manufacturing low soluble iron diatomite filter aids and such filter aids are disclosed. Aluminum oxide and/or aluminum hydroxide are used as additives when preparing the flux-calcined diatomite filter aids. As compared to either straight-calcined or soda ash flux-calcined diatomite filter aids of similar permeabilities made from the same ore, the disclosed filter aids have lower soluble iron levels. For instance, disclosed filter aids of about 0.5 to about 2.0 Darcy were made using either an aluminum oxide or aluminum hydroxide additive with soda ash. The disclosed filter aids may have an EBC soluble iron content of less than 80 ppm versus 130 ppm for similar filter aids that were made from the same ore and flux-calcined with just soda ash.

Abstract: A separator device is provided for removing particles from suspension in a fluid comprises a housing having first and second ports for ingress and egress of fluid into and out of the housing, the first and second ports being on the same vertical line; and at least one separation chamber for separating solid particles from the fluid.

Abstract: Disclosed are a sewage and wastewater treatment system and method using a constant level continuous flow sequencing batch reactor (CSBR). Also, disclosed is a method capable of converting the system into a membrane bio-reactor (MBR) process by means of submerged membranes with a simple configuration. Further, disclosed is an automated foam and scum management and removal system.

Abstract: A method for removal of at least a portion of carbon dioxide from an aqueous fluid such as a blood fluid includes placing a first surface of at least one membrane through which carbon dioxide and at least one acid gas other than carbon dioxide can pass in fluid in contact with the fluid. The membrane limits or prevent passage of the fluid therethrough. A carrier or sweep gas including the acid gas other than carbon dioxide is passed over a second surface (which is typically opposite the first surface) of the membrane so that the acid gas other than carbon dioxide can pass through the membrane into the fluid, and carbon dioxide from the fluid can pass from the liquid, through the membrane, and into the sweep gas.

Abstract: A method for controlling fluid flowing through a chromatographic system includes determining a fluidic parameter related to density at a first fluidic location in the chromatographic system; and in response to the determined fluidic parameter, modifying a volumetric flow rate or a pressure at a second fluidic location in the chromatographic system to produce a selected mass flow rate of the fluid.

Abstract: We provide a system and method for reverse osmosis treatment of water, including seawater and brackish water. Methods and systems of embodiments of the invention may include, for example, ultrafiltration followed by biofoulant removal, both of which precede reverse osmosis. In preferred embodiments the system is run at a low flux. For example, a flux of 6-8 GFD may be used with seawater. Additional embodiments may provide the above process in conjunction with a reverse-osmosis membrane cleaning system. The membrane cleaning system is a “clean in place” system that includes use of the natural pressure differential in the reverse osmosis system to remove biofoulants and their precursors.

Abstract: The invention relates to a composite comprising a porous substrate at least partially coated with a coating layer prepared from curing a coating composition (C), the coating composition (C) comprising at least one curable perfluoropolyether (PFPE) polymer. The invention further relates to a process for manufacturing a composite as afore-described, comprising the steps of: (a) providing a coating composition (C) comprising at least one curable perfluoropolyether (PFPE) polymer; (b) depositing said coating composition (C) on a porous substrate; and (c) crosslinking said coating composition (C) to form a porous substrate at least partially coated.

Abstract: The present invention relates to a cytopheretic cartridge for use in treating and/or preventing inflammatory conditions that affect myocardial function and to related methods. The cartridge can be used in treating a subject with myocardial dysfunction, such as a subject with chronic heart failure and/or acute decompensated heart failure.

Abstract: A hemodialysis apparatus 1 is provided with a dialyzer 2 for performing hemodialysis, a blood circuit 3 connected to the dialyzer, a dialysis solution circuit 4 connected to the dialyzer, a replacement fluid port 31 provided in the dialysis solution circuit and capable of being opened and closed by a lid member, and a replacement fluid passage 6 having its one end connected to the blood circuit and the other end connected to the replacement fluid port. After a dialysis fluid substitution step of filling the dialysis solution circuit with a dialysis solution, the lid member is detached from the replacement fluid port to change the replacement fluid port from a closed state to an open state. To connect the replacement fluid passage to the replacement fluid port in the open state, a negative pressure forming step to make the pressure in the dialysis solution circuit negative is performed after the dialysis fluid substitution step.

Abstract: An apparatus for extracorporeal treatment of blood (1) comprising a treatment unit (2), a blood withdrawal line (6), a blood return line (7), a preparation line (19) and a spent dialysate line (13). A control unit (10) is configured to calculate values of a parameter relating to treatment effectiveness based on measures of the conductivity in the spent dialysate line (13) subsequent to an alternating conductivity perturbation continuously imposed on the preparation line (19) of fresh dialysis fluid.

Abstract: A method and an apparatus (10) for filtering and separating flow media (11) by means of membranes (13), including a substantially pressuretight housing (14) in which a plurality of membranes (13) is disposed, at least one inlet (15) for the flow medium (11) carried into the apparatus (10) and to be separated, and at least one outlet (16) for the permeate (18) discharged from the apparatus (10) and an outlet (17) for the discharged retentate (19), the membranes (13) being embodied on the order of membrane cushions, which have an opening region (131) for the emergence of the permeate (18) collecting in the membrane interior (137).

Abstract: A flash chromatography apparatus which provides an improved apparatus for large and medium commercial scale flash chromatography columns. More particularly, the invention relates to a flash chromatography column and cartridge system for positioning and ease of loading and unloading of stationary phase agent in the flash chromatography column. The flash chromatography column further provides flow distributors to support the stationary phase and permit plug flow through the column. The apparatus of the present is modular and can be disposed in any configuration to reduce maintenance cost and downtime in a commercial installation. Flash chromatography is widely used for purification of low molecular weight organic compounds and products of organic synthetic reactions.

Abstract: A graphene oxide adsorbent for removing dissolved substances from water or other liquids comprises a substrate having a coating layer of graphene oxide. The dissolved substances may be dissolved heavy metals, radioactive compounds, or other organic and inorganic substances. The substrates may be particulate substrates. The substrates may be adsorbents. The graphene oxide adsorbents can be beneficially used in filters and batch reactors, among other devices, for water treatment and for environmental remediation.

Abstract: Method of removing dissolved organic carbons from raw water, containing suspended and/or colloidal matter in a suspended ion exchange process, includes: feeding the water into a plug flow reactor at a rate of at least 500 m3/h, adding an anion exchange material to the liquid at the inlet of the reactor, suspending the anion exchange material in the water, transporting the water and the suspended anion exchange material under plug flow conditions to an outlet of the reactor after a predetermined residence time, feeding the water and the suspended anion exchange material to a separator and feeding treated water and anion exchange material from a reactor outlet to a separator, wherein the concentration of the anion exchange material in the reactor is smaller than 20 ml/l, and the residence time of the anion exchange material in the reactor is lower 30 minutes.

Abstract: Methods are described for the removal of highly soluble radioactive anions, e.g., radioactive technetium and/or radioiodide, from an aqueous solution. The methods utilize a sequestering agent that includes an organoclay, i.e., a clay with an intercalated cationic quaternary amine, as a sorbent for highly soluble radioactive anions that are present within an aqueous solution. In exemplary embodiments, the method can be utilized to treat aqueous waste at a nuclear power facility or to treat a groundwater contamination site or a soil or sediment contaminated site.

Abstract: An oleophilic product for absorbing and retaining a hydrophobic liquid such as oil. The product comprises cones of the plant species Pinus elliottii comminuted to a mixture of particles. A method of manufacturing the product is also disclosed, as is a method of absorbing and retaining a hydrophobic liquid using the product.

Abstract: Methods for removing particulates from an aqueous suspension are provided. In at least one specific embodiment, the method can include mixing a polyamidoamine-epihalohydrin resin with an aqueous suspension comprising one or more first particulates to produce a treated mixture. An amount of the polyamidoamine-epihalohydrin resin in the treated mixture can be less than 500 g/tonne of the one or more first particulates. The method can also include recovering from the treated mixture a purified water having a reduced concentration of the one or more first particulates relative to the aqueous suspension, a purified first particulate product having a reduced concentration of water relative to the aqueous suspension, or both.

Abstract: The present invention is directed to a method for the treatment of an environmental medium contaminated with arsenic, comprising treating such medium with an effective amount of persulfate and zero valent iron.

Abstract: A method of filtering contaminants from a fluid is disclosed. A feedstream of fluid containing contaminants is directed into a filter chamber containing a filter element. Part of the feedstream fluid flows in one of: a forward flow direction where it passes in a first direction through a wall of the filter element; and a reverse flow direction where it passes in a second, opposite direction through the wall. The filtrate is directed into a flowline for collection. The feedstream fluid is then arranged to flow through the filter element in the other direction, to remove contaminant material from a surface of the element wall. Following removal of contaminant material, the feedstream fluid is continued to be directed through the wall of the filter element in said other direction, to filter out contaminants from the fluid during flow in said other direction.

Abstract: Methods and systems disclosed herein may be methods for rapidly increasing pressure in a pressure fryer cooking vessel during a cooking cycle. Such methods and systems may comprise determining whether a pressure output in the cooking vessel is closed. Such methods and system may also include determining a pressure of the cooking vessel, comparing the pressure of the cooking vessel to a predetermined optimal pressure to determine whether the pressure of the cooking vessel is less than the optimal pressure, and activating a filter pump configured to supply air from a drain pan into the cooking vessel in response to determining that the pressure output is closed and the pressure of the cooking vessel is less than the optimal pressure. Such methods and systems may further include deactivating the filter pump when the pressure within the cooking vessel is equal to or greater than the optimal pressure.

Abstract: A filter assembly is provided. The filter assembly includes a filter cartridge with a containment bag including a vent port and a support housing, including a split lid.

Abstract: A dishwasher appliance and a method for operating an appliance are provided. The method includes drawing a flow of unfiltered liquid into an unfiltered volume of a filtering assembly of the appliance and circulating the unfiltered liquid in a circular pattern within the unfiltered volume such that the unfiltered liquid circulates in the circular pattern across a filter medium of the filter assembly. The circular pattern of the unfiltered water can assist with limiting or preventing clogging of the filter medium.

Abstract: A dishwasher appliance and a method for filtering liquid in an appliance are provided. The method includes directing a flow of unfiltered liquid over a filter medium of the appliance in a first direction and urging a flow of filtered liquid adjacent the filter medium of the appliance in a second direction. The first direction is substantially perpendicular to the second direction. Such cross flow can assist with limiting clogging of the filter medium.

Abstract: A filter system for a heavy-duty machine includes a filter stand configured to be coupled to the heavy-duty machine. A first filter is supported by the filter stand and is configured to be fluidly coupled to a first fluid flow path that provides pressurized hydraulic fluid to an auxiliary component of the heavy-duty machine, and a second filter is supported by the filter stand and is configured to be fluidly coupled to a second fluid flow path that receives pressurized hydraulic fluid from the auxiliary component of the heavy-duty machine.

Abstract: The present invention concerns a rack for computer servers consisting of a carrier structure supporting a plurality of superposed trays extending substantially horizontally, each of said trays being fitted with electronic components organised so as to allow air to flow between the superposed trays and said electronic components, the air flow taking place between the ambient air, via an open area, and an inner discharge space extending perpendicular to said trays, said discharge space having a cylindrical configuration, said trays having the shape of superposed trapezoidal petals completely surrounding said cylindrically configured inner discharge space and said trays supporting radial separation means extending to a height of at least half the distance separating two superposed trays.

Abstract: A track and carriage system including a mounting plate, a first track secured to the mounting plate and receiving a first carriage movable therein, a second track secured to the mounting plate and receiving a second carriage movable therein. The first and second tracks are positioned substantially parallel to one another such that the carriage of the first track moves independently of and in parallel with the carriage of the second track.

Abstract: An attachment device for connection to a construction member with at least one connection slot or recess is disclosed. Contact ends of two connection members of the device are inserted into the recess separately and then moved into an opposing or back-to-back relationship in the recess. At least one of the connection members has a contact end that is angularly offset from its body. The intersection between the body and contact end defines a pivot point. Once the connection members are placed in the recess, bodies of the connection members outside of the recess are disposed towards each other. The angularly offset contact end pivots about the pivot point moving the contact ends in the recess apart pressing contact surfaces against interior sidewalls of the recess. The outward pressure of the contact surfaces with the interior sidewalls locks the two connection members into place in connection recess.

Abstract: A mounting system for supporting a plurality of photovoltaic modules on a sloped support surface, such as a sloped roof, is disclosed herein. The mounting system may include one or more support surface attachment devices, each support surface attachment device configured to attach one or more photovoltaic modules to a support surface; and one or more module coupling devices, each module coupling device configured to couple a plurality of photovoltaic modules to one another.

Abstract: A storage rack assembly comprising a configurable hanging frame and one or more replaceable support elements is described. The support elements may be detachably affixed to the hanging frame. The support elements can provide a holding support at separate elevated positions along the longitudinal direction of the hanging frame. The hanging frame can have one or more frame elements detachably coupled in sequence. The frame elements can include a top frame element adapted to be mounted on an upright surface. Each frame element can have a pair of mounting arms defined with one or more pairs of receiving structures transversely for the separate elevated positions. Each support element can have an engaging structure to be removably coupled with a pair of the receiving structures of a corresponding pair of the mounting arms.

Abstract: A holding rack allows a cook to remove scoops or Spoodles without searching through a drawer. The holding rack provides quick and easy access to allow the cook to get to the appropriate size scoop or Spoodle by allowing the items to be easily visualized and grasped without having to move other items about. The holding rack prevents contamination and time consumption that can occur when rummaging through a drawer for a desired utensil.

Abstract: A product display tray, which is provided with a spring-actuated pusher paddle for urging a column of products forwardly in a display as items are removed from the front of the tray, includes a manually operated locking element pivotally attached to the pusher paddle and normally held in a “release” position by the action of the pusher spring. When the paddle is in a fully retracted position, for reloading of the tray, the locking element is manually pivoted into a locking position to engage the tray structure and retain the paddle in its retracted position during loading operations. A slight backward push on the paddle, when reloading has been completed, releases the paddle for forward movement by the spring. The device also includes special features on the pusher paddle to facilitate and simplify its slideable assembly with, and stable retention on, longitudinal guide rods on which the paddle slides.

Abstract: Disclosed is a weighted pusher assembly for advancing merchandise packages by gravity along an inclined shelf surface. The weighted pusher assembly includes a first end comprised of a weighted member, a second end comprised of a fastener and, disposed between the first and second ends, a collapsible member that is collapsible between a first extended position and a second collapsed position. The weighted member is adapted to be disposed proximal to the merchandise package and a first edge of the shelf and the fastener is adapted to be disposed distal the merchandise package and fastened to a second edge of the shelf. The collapsible member is preferably adapted to collapse substantially completely in a direction substantially perpendicular to the inclined shelf surface. The weighted member may be a hollow structure that is filled with a material to give it mass, but can also be a solid structure.

Abstract: A two element toothbrush holder including a flexible mat. A resiliently rigid and three dimensional divider element has a flat bottom surface supported in width-wise fashion upon the flexible mat, such as in a selected end proximate location. A plurality of notched recesses or channels are formed into an upper surface of the divider element and which are adapted for supporting an angled neck associated with up to an equal number of toothbrushes in a substantially lay flat condition such that the bristles are elevated above the flexible mat.