Abstract: Equipment to achieve retardation of inflow into circular or polygonal sedimentation tanks, final sedimentation tanks, and thickeners in sewage treatment plants is provided through the use of circular or polygonal self-supporting structures one or more arranged around the central inlet pipe and reaching into the liquid depths. Other improvements regard to preferable modes of the retardation center well and floats as well as to their arrangement to each other as well as to their location in the tank.

Abstract: A drain valve for a fuel filter water separator for an internal combustion engine has a first port mating with the vent opening of the separator, a second port mating with the drain opening of the separator, and a third port. The drain valve is actuatable between a closed position blocking communication of the first port with the third port and blocking communication of the second port with the third port, and an open position providing communication of the first port with the third port and providing communication of the second port with the third port. If the valve is actuated to the open position when the engine is off, collected water and vent air each flow through the third port but in opposite directions. If the drain valve is actuated while the engine is running, pressurized fuel spray from the vent opening and collected water from the drain opening of the separator each flow through the third port in the same direction.

Abstract: A clarifier feedwell having a seismic protection system. The clarifier feedwell includes a feedwell frame and at least one pressure relief door which is slidably inserted into the feedwell frame. The pressure relief door includes a supporting frame, the supporting frame defining an opening. A flexible panel is disposed in the opening. A first edge of the panel is attached to a first portion of the supporting frame. The remaining edges of the panel are releasably engaged with other portions of the supporting frame such that the panel occupies substantially the entire area of the opening. At least one stiffening frame is disposed on the panel. The stiffening frame increases the rigidity of the panel, so that the panel does not disengage from portions of the supporting frame under a normal hydrodynamic load.

Abstract: A molded base module for a filter assembly includes a header portion that defines a receiving cavity for a replaceable cartridge and may include integral inlet and outlet structures for communicating with the received filtered cartridge. The header portion includes an integrally formed retainer having a retaining channel for receiving tabs projecting from the cartridge, thereby retaining the cartridge to the module. The retaining channel is defined by a retaining lip and axially spaced shoulder connected by a side wall. In an illustrated embodiment, the retaining lip includes a plurality of angularly spaced axial slots and the side wall includes ramp-like projections which mate with correspondingly shaped tabs projecting from the cartridge.

Abstract: The present invention relates to a mounting device 1 of a support carrier 5, notably for a device handling at least one support carrier, wherein this support has a said “active” portion for contaminants. It includes a base plate 1 comprising a through aperture with dimensions substantially or larger than the dimensions of said active portion, first means 15a, 15b able to removably fix said support carrier 5, wherein said active portion of the support is positioned facing said aperture on a first side 12 of said base plate, and second means 16a, 16b able to fix an auxiliary element 6, 7 against the other face or the support carrier, wherein the support carrier is doubly fixed relatively to said base plate 1.

Abstract: A wear shoe for mounting to a flight of a sludge collector. The wear shoe snaps into a surface of the flight at a desired location and is held in place with no additional fasteners or hardware. The wear shoe is able to be utilized with any channel-type flight configuration.

Abstract: A variable-orifice fluid restrictor for use with a supercritical extractor or chromatograph includes an inlet line for fluid at a pressure above its critical pressure, an extended tubular probe having an inner and an outer surface and a proximal and a distal end. The proximal end of the probe is disposed toward the inlet line. The distal end of the probe includes an adjustable orifice means adapted for metering the fluid and having first and second orifice members and an adjusting stem having first and second ends. The adjustable orifice means is adjacent to the outer surface of the probe and the orifice means is adjustable with the adjusting stem. The end of the adjusting stem is located at the distal end of the probe and is adapted for moving the first orifice member with respect to the second orifice member to control the adjustable orifice for varying the restriction of fluid passing through the adjustable orifice.

Abstract: A waste water treatment system for removing sludge from within a rectangular clarifying tank having a plurality of sludge collector flights attached to a pair of parallel chains for collecting sludge and scum within the waste water. Each of the collector flights includes a non-metallic elongated main body portion having spaced top and bottom walls connected by spaced front and rear walls for defining a hollow, interior cavity. Buoyant foam material is disposed within the interior cavity for increasing the buoyancy of the collector flight. The waste water treatment system further includes plastic bull and drive sprockets mounted to a drive shaft running across the width of the tank, and a chain drive assembly for driving a pair of parallel drive chains attached to the drive sprockets. The drive assembly causes rotation of a drive shaft through a chain link attachment to the bull sprocket.

Abstract: An enhanced flocculation and energy dissipation feedwell assembly includes an influent feedwell and a plurality of feed outlet structures. The influent feedwell is disposed about an influent riser pipe of a clarifier from which a liquid enters the influent feedwell. The influent feedwell has a bottom wall and a continuous side wall. The bottom wall has a plurality of holes therethrough. The feed outlet structures are supported below the influent feedwell such that adjacent ones are directed to achieving opposing jets of liquid flow to enhance flocculation and distribution and dissipate energy and thereby minimize formation of currents. Each feed outlet structure includes a first tubular portion and a plurality of second tubular portions.

Abstract: A scum sweeper for sweeping surface floating matters in a clarifying tank to a collector channel. A sweeping blade is pivotally hanged by arms to parallel endless running chains mounted onto a supporting frame installed in the tank at an above position with respect to the collector channel. A motor drives the chains that haul the blade back and forth successively over and at the surface of water in the tank. The blade always remains under the chains as a result of a free pivoting of the arms at the opposite turning end courses of the chains. Guiding arrangements are provided to lock the arms in a downward direction when the sweeping blade travels horizontally.

Abstract: An apparatus for supercritical extraction is disclosed herein. The apparatus includes a plurality of containers adapted to hold a different one of a corresponding plurality of samples, a first transport means for carrying the plurality of sample containers, and a second transport means for transporting a selected container from the first transport means to a supercritical extractor. The supercritical extractor includes a heating means having a recess for receiving the selected container, means for passing fluid at a supercritical condition through the selected container, and a receiving means for receiving extractant from the selected container. A programming means is provided to control the first and second transport means.

Abstract: A water quality management system for managing the water quality in a water supply network having water pipe lines running from the purification plant to consumers' faucets to maintain the water quality at the consumers at the terminals of the network at an appropriate level. The water quality monitors for measuring the quality of water in the pipe lines are installed in the small-pipe water distribution network branching from the water distribution main pipe network and running toward the consumers. The water distribution facility for improving the water quality is installed at the base point of the small-pipe water distribution network. The water quality in the small-pipe water distribution network is managed based on the signals from the water quality monitors.

Abstract: A controller and corresponding method have been developed for controlling recharging of a water conditioning apparatus. The apparatus includes an input component for receiving measurements of water usage by the apparatus, a storing component configured to store, for each time slot of a cyclically repeating series of time slots, values dependent upon an average of the measured amounts of usage in that time slot and in at least one other corresponding time slot in a previous cycle, and a determining component configured to determine, at least in part, a time for recharging the apparatus in dependence upon the stored value.

Abstract: A rotary distributor speed control system that uses hydraulic forces is provided. This rotary distributor speed control system is part of a trickling filter used in wastewater treatment. The trickling filter includes a tank which is filled with a porous filter media, a center column that extends through the center of the tank and holds a feed pipe through which influent wastewater flows, and distribution arms that extend radially from the center well. Each distribution arm has a forward side and a reverse side. The forward side and the reverse side each define at least one orifice. Slide gates are coupled with the distribution arms, and these gates can be moved so as to cover the orifices. A slide gate valve operator is also coupled with each arm for mechanically moving the slide gates in response to a change in influent feed flow, a change in arm speed, or external conditions.

Abstract: Scraper bar arrangement to be used particularly in connection with a liquid handling reservoir, such as a clarification basin or like, which comprises one or several scraper bars (1) being placed one after another in the longitudinal direction (5), transfering means (2) for moving of the scraper bar/bars (1), such as two transmission chains (2b) or like being placed side by side and being driven by means of a drive wheel and turning wheel arrangement (2a) or accordingly, in connection with which the scraper bar/bars (1) is/are attached by means of an attachment arrangement (3), preferably removably, such as by a screw joint or like. The scraper bar (1) is formed known as such of at least two first bar parts (1a), that are fixed to the transfering means (2), such as to two transmission chains (2b) placed side by side, and of at least one second bar part (1b), that has been attached between the above by means of coupling means (4), that operate preferably by quicklocking principle, and locking means (5).

Abstract: A cover apparatus for inhibiting the growth of algae on the fluid-contacting surfaces of an inboard launder channel disposed to receive a water flow from a central and from a peripheral region of a water treatment tank and for capturing noxious gases. Cover supports coupled to the sidewalls of the launder channel position the covers above the inboard launder channel and hinge means permit the covers to be pivoted away and toward the launder channel, for accessing the channel. In one embodiment, the inboard launder channel is circular and the covers are disposed above it with a substantially similar radial curvature. In another embodiment, the inboard launder channel is made up of straight sections angled at the end of each section to form a polygon, with fixed cover corner sections disposed in between adjacent straight sections. In still another embodiment, several straight inboard launder channels are parallel to each each other and each empty into a main channel.

Abstract: A sludge collecting apparatus comprising: a vehicle body which is long in advance/retreat directions and has driving means; and a plurality of scrapers which are disposed at intervals in the advance/retreat directions including a sludge scraper which is most advanced to the sludge collecting pit side and performs a collecting operation to collect and drop sludge into the sludge collecting pit and following sludge scrapers which perform a collecting operation, the front and rear sludge scrapers have the relation such that the collecting state and the noncollecting state are interlockingly switched, the interval between the neighboring front and rear sludge scrapers is shorter than the advance/retreat stroke of the vehicle body, the following sludge scraper in the collecting motion pushes the sludge toward the sludge collecting pit further than the return position of the advanced sludge scraper in the collecting motion, and the most advanced sludge scraper sequentially collects and drops the sludge collected by

Abstract: A fluid distributing-collecting system for a device for bringing fluids and solids into contact comprising several distributor plates and several panels for mixing, distributing or extracting fluids. The system comprises at least one level 1 chamber in connection with the outside of said device with at least one hose and, at least one level 2 chamber that is linked with the level 1 chamber and that comprises one or more connecting hoses of a selected length that are arranged in at least one zone. The zone is identified relative to an angle .alpha. relative to a radius of a plate and corresponds to a given angle sector, whereby said hose lengths, angle .alpha. and the angle sector are selected so that the injected fluid arrives approximately at the same time on all of the panels of the same plate. This system is used for separation of paraxylene in a simulated moving bed.

Abstract: A lifting mechanism for a sedimentation tank is provided for vertically raising and lowering a rake assembly in such sedimentation tank. The lifting mechanism comprises one or more elongate members pivotally connected to certain structural elements of the assemblage, such as the rotary drive motor, rake assembly, column or bridge. The pivotal connections of the elongate members are positioned about a horizontal axis and are oriented to receive the torque forces imposed on the assemblage as the rake assembly rotates in the tank simultaneously with vertical lifting. The torque forces are translated into the pivotal connections and are able to counteract those forces to facilitate vertically raising and lowering the rake assembly while it is being rotated in the sedimentation tank.

Abstract: An apparatus for directing, controlling, regulating and monitoring flowing liquids, in particular for a membrane-type water conditioning apparatus, is provided, whereby a channel system for the flowing liquid is formed by means of a first body (1) having a surface (2), a plurality of recesses (10a, 10b, 10c, . . . ) provided at the surface and forming channel portions for a flowing liquid and a second body (4) which is non-rotationally connected to the first body and tightly separates the recesses (10a, 10b, 10c, . . . ) from the surroundings, and an inlet and outlet (A, B, C, D, E, F, G, H) for the liquid communicating with the channel portions. This design achieves, in comparison with a conventional pipework, a particularly compact construction. Moreover, a water conditioning apparatus comprising such an apparatus is provided.

Abstract: A collector flight for use in a sewage settling or sedimentation tank includes an elongated, generally C-shaped, one-piece, extruded aluminum body defined by top and bottom, hollow, rectangular heads connected together at one corner by a planar web. Slots extend the length of each side of the heads to receive brackets used to connect the flight to chains which move the flights through a sedimentation tank. The slots are also used to mount accessories such as shoes and a combination wiper/skimmer strip on the flights.

Abstract: A vehicle liquid waste collection system for collecting fluids from a vehicle and separating non-water soluble materials from water soluble materials. The vehicle liquid waste collection system includes a support member having an upper surface. A ramp assembly extending from the support member. A containment wall extending upwardly from the upper surface. The support member includes an aperture in the upper surface such that the upper surface is angled downwards towards the aperture. A collection member having a hollow interior. The hollow interior has a first chamber and a second chamber in environmental communication. A duct in environmental communication between the aperture and the first chamber of the collection member. The duct is elevated relative to the first chamber whereby liquid waste collected passes through the duct and into the first chamber.

Abstract: A partition includes a float on its upper edge and a partition which divides the inside of a container into two compartments. The perimeter of the partition contacts the walls and bottom of the container using a U-frame that is provided with three flexible bands. In one of the compartments, anchored on a support, are filters arranged together with the supports. An external pump transfers liquid from the bottom of one compartment to the bottom of the other compartment and channels the liquid between the flexible bands and below the partition in a uniform and calibrated manner over its entire length. At the same time, liquid passes from this second compartment to the first one above the float. The float meters and calibrates the liquid flow over its entire length, thereby generating a surface stream which discharges into the filters.

Abstract: A novel spiral membrane arrangement is disclosed comprising opposing elongate filtration membrane units, spiraled about a base axis and separated by a novel lattice separator having spaced apart elongate primary laths which form fluid passageways, bridged by cross laths arranged to form a plurality of fluid shears spaced along the passageways which divide, deflect and/or disrupt gross fluid flow through the passageway, directing fluid against the membrane surface and creating a self cleaning functionality which improves the efficiency and the life of the life of the membrane arrangement.

Abstract: An endless belt for supporting a continuous web of filter media and moving it through liquid filtration apparatus where a pressure differential is applied across the belt and media. The belt may be fabricated at relatively low cost while retaining the required tensile strength. The belt is formed from a plurality of unique, unitary portions termed "hinge members" which are arranged in longitudinal columns and lateral rows, a plurality of links between each pair of laterally adjacent hinge members and connecting rods extending the full width of the belt through aligned openings in looped portions of the hinge members and openings in the links. The hinge members are preferably formed from a continuous strip of sheet metal by stamping and bending operations, with the links providing added tensile strength.

Abstract: A clip for supporting the clarifier and the droplines in a wastewater treatment system is disclosed. The clip comprises a pair of parallel main plates separated by a bracing plate. The bracing plate is perpendicular to the main plates and is attached to the ends of each. Attached to the free ends of each of the main plates is a pair of mounting plates. These mounting plates are parallel to the bracing plate. In a preferred embodiment, the main plates each contain a hole. This pair of holes is vertically aligned, and each hole is sized to contain a dropline.

Abstract: The system includes a number of membrane modules (1-8), each including one membrane tube or a bundle of a plurality of membrane tubes, whose walls have the function of separating membranes, as well as a tubular module housing for receiving the membrane tubes. Each membrane tube (1-8) has one connecting flange (20, 21) each for delivering and removing the retentate, as well as four further laterally disposed connecting flanges (22-25) for removing the permeate. These connecting flanges (22-25) retain the membrane modules (1-8) in self-supporting fashion in their group.

Abstract: A clarifier in a sewage treatment process includes efficient scum removal within the influent well, with discharge of the scum and other floatables as a dedicated waste stream separate from return activated sludge and biological scum collected in the clarifier. In one embodiment the scum removal system has an inclined scum ramp at the leading edge of each of two scum removal troughs, with a forward edge below the liquid surface. The scum troughs pass through an arc of rotation, building up scum, which accumulates and is pushed forward by the scum ramp. At least once per revolution, the moving scum ramp approaches a stationary scum surface blade that extends partially under the liquid surface and provides a barrier to the forwardly pushed scum. This blade contacts and slides up the ramp, sweeping the scum up the ramp and into the scum trough.

Abstract: An apparatus for filtering liquids comprises a hollow body which is rotatable about a horizontal axis. Liquid to be filtered is supplied into the interior of the rotating hollow body so that filtrate flows by gravity through filter material of the hollow body into a filtrate container. A sealing structure seals between a stationary circumferential wall, which defines a liquid supplying chamber, and a circumferential liquid impervious wall of the hollow body. Wall structures are arranged to prevent unfiltered liquid leaking past the sealing structure from entering the filtrate container.

Abstract: A device in a dialysis machine for exchangeable connection of a powder cartridge (11) between an inlet (56') and an outlet (56) for liquid. The inlet and the outlet are provided in one and the other, respectively, of two jaws (12, 14), and at least one of these is guided for linear displacement towards and away from the other one for engaging the jaws with the powder cartridge (11) under connection of the inlet and the outlet to a hollow stud (18, 19; 31) on the powder cartridge positioned between the jaws for conducting liquid through the cartridge, or for interengaging of the jaws for short circuit of the inlet and the outlet.

Abstract: Disclosed is a single-phase fluid distributor-mixer-extractor for separating beds of granular solids used in chromatography. The distributor includes a device for adding or removing a secondary fluid. The distributor further includes at least one calibrated orifice having a geometry designed to create a sufficient pressure drop to confine fluid turbulence inside a mixing chamber.

Abstract: An apparatus is provided for cleaning a water treatment tank. The apparatus includes a frame support having post mounted at a central extent of the upper surface of the water treatment tank and extending upwardly therefrom. A horizontally oriented arm has an inboard end coupled to the post. An outboard brush assembly is equipped with a rod coupled to an outboard end of the arm of the frame support and extended downwardly and radially outward therefrom. A vertically oriented brush is coupled to a second end of the rod for cleaning an inner surface of the peripheral lip of the water treatment tank. Also included is a plurality of inboard brush assemblies for cleaning the flanges of the water treatment tank.

Abstract: An apparatus for cleaning algae and debris from the weir, baffle, spillway, and effluent trough surfaces of a sedimentation water treatment tank. A main frame is mounted on the revolving skimmer arm of the tank. A pair of weir cleaning brushes mounted at a lower end of an articulated link arm assembly have bristles facing in inwardly opposed relation engage and clean both sides of the weir and move inward and outward relative to the center of rotation to compensate for out-of-round circular weir surfaces and pivot when their lower ends engage a bracket or obstruction so that they pass thereover and return to a vertical position. A sweeper connected with the weir cleaning brushes spans the space between the baffle and the weir and has elongate flexible strips that dislodge algae and debris and facilitate is passage through the weir and may also clean the surfaces of the baffle and weir.

Abstract: A lifting mechanism for a sedimentation tank is provided for vertically raising and lowering a rake assembly in such sedimentation tank. The lifting mechanism comprises one or more elongate members pivotally connected to certain structural elements of the assemblage, such as the rotary drive motor, rake assembly, column or bridge. The pivotal connections of the elongate members are positioned about a horizontal axis and are oriented to receive the torque forces imposed on the assemblage as the rake assembly rotates in the tank simultaneously with vertical lifting. The torque forces are translated into the pivotal connections and are able to counteract those forces to facilitate vertically raising and lowering the rake assembly while it is being rotated in the sedimentation tank.

Abstract: An apparatus for producing highly pressurized air-saturated water intended preferably for dispersion in flotation plants, has, preferably, an upstanding cylindrical pressure vessel (21) which, in operation, is filled partially to a controlled level with pressurized water flowing through an opening in the bottom part of the vessel, and partially by continuously delivered pressurized air, wherein the air is dissolved in the water during its passage through the pressure vessel (21). Pressurized water is delivered to the apparatus in the upper end of the pressure vessel (21) through a spray element (24) or the like to effectively break up the water flow. The spray element is arranged so that at least part of the water flow is sprayed on to the inner wall surfaces of the vessel (21) which, in operation, surround the air-filled part and together with this part produce a curtain of water which substantially covers the inner wall surfaces.

Abstract: A drive system for a filtration apparatus includes a housing, a motor, an input gear driven by the motor, a ring gear, an eccentric gear assembly, an internal gear assembly, and an output gear. The ring gear is driven by the input gear about a central axis. The eccentric gear assembly includes an eccentric plate rotatable about the central axis, concentric rollers, and eccentric rollers. The eccentric plate is fastened to the ring gear to rotate therewith. The concentric rollers are interposed between the eccentric plate and the housing to enable rotation therebetween. The eccentric plate is eccentrically movable about the central axis within a bore of the housing. The internal gear assembly has an eccentric plate rotatable about the central axis and circular bores extending through the eccentric plate.

Abstract: The invention is a column for separating a substance from a liquid having a plurality of separable compounds. The column has at least a first and a second bed of granular solids separated by at least one device, the device has at least a collection device which collects the substance to be separated, the collection device being in fluid connection to at least one mixing chamber, at least a first circuit for injection and/or removal of a first secondary fluid B.sub.1 and at least a second injection and/or removal circuit of a second secondary fluid B.sub.2. The injection and/or removal circuits are in communication with the mixing chamber with at least one opening allowing passage of the secondary fluids B.sub.1, B.sub.2 into the mixing chamber.

Abstract: A cleaning device for moving debris adjacent a trash rack, the device having a mounting base for mounting the device adjacent the trash rack and a longitudinally extending arm having a first end and a distal end, the arm being capable of being driven in a direction generally parallel to the longitudinal axis of the arm, a debris collecting assembly located at the arm distal end, the debris collecting assembly comprising a fixed jaw mounted on the arm and a mobile jaw moveably connected to the fixed jaw by a jaw connecting structure to allow the mobile arm to both pivot and move inwardly with respect to the fixed jaw.

Abstract: A cover apparatus for inhibiting the growth of algae on the fluid-contacting surfaces of a water treatment tank and for capturing noxious gases, the tank including a central influent, at least one substantially vertical peripheral wall having an upper and interior surface, a peripheral baffle having inside and outside surfaces, a substantially vertical weir, a spillway, and a launder channel having a width. The cover apparatus includes at least one panel member positionable over at least a portion of the launder channel to prevent light from reaching interior surfaces thereof. In an embodiment of the present invention, alternating covers are provided with a molded recess so that the covers may be mounted in end-to-end alignment to form a substantially sealed launder channel region.

Abstract: The present invention includes a compact drive system comprising a housing, a motor, a worm screw, a first gear, an internal gear, a second gear and an output gear. The motor is supported relative to the housing and the worm screw is driven by the motor. The first gear rotates about a central axis and is driven by the worm screw to provide a first gear reduction. The first gear has a hub offset from the central axis. The internal gear mounts relative to the housing and has a predetermined number of internal teeth. The second gear has an aperture which is driven by the eccentric hub as the eccentric hub rotates. The internal teeth cooperate with the external teeth so that the second gear orbits within the internal gear when driven by the eccentric hub to provide a second gear reduction. An output gear rotates about the central axis and is supported relative to the housing.

Abstract: The invention relates to a control head constructed for use with rotary filters for controlling separation of filtrate from the filters into adjustable filtrate zones. It is characterized by the fact that at least one filtrate separator (7) is provided, which includes a mechanism for diverting of the flow (9) from axial flow in channels that are axially arranged with respect to the axis of the filter to radial flow without causing entrainment or formation of air bubbles in the diverted flow.

Abstract: The described Chromatography Buffers Center holds various types of buffers required in the purification of a variety of biological molecules. The unit consists of a base plate, a handle, reservoirs and lids with attached stop pins. The vertical handle, which is an extension of base plate, gives a nonslippery grip to lift and carry the unit. A short bent hook present in the handle is useful to mount the unit in a clamp that is attached to a common laboratory stand. The hook permits lateral movement of the unit even by a simple push with a finger. Base plate allows the unit sit on any flat surface of work bench, shelf or magnetic stirrer. Reservoirs attached permanently to the top of base plate hold different types of buffers in their chambers. Through drain tubes present in the rim of base plate, these buffers can be drawn to develop chromatography columns. Lid on each reservoir protects buffer from air born dust and evaporation.

Abstract: A high efficiency backflush filter apparatus positioned on the downstream side of a filter frame that includes a bellows attached to the top of the filter frame. The backflush filter apparatus includes a collapsible bellows member having a first opening attached to an aperture in a plate member, a second opening attached to the filter frame, and a compression plate positioned above the plate member and having a one-way valve. In the preferred embodiment of the present invention, the plate member is slidably mounted on at least one guide member which is mounted to the filter frame and the plate member is spring biased away from the filter frame so that the bellows is in an expanded configuration. The backflush procedure is achieved by stopping the pump, and moving the compression plate, using air cylinders or some other device, until it is against the plate member and thereby trapping fluid inside the bellows.

Abstract: There is provided an a wear strip assembly for use in a waste water treatment facility comprising an anchor plate secured to the bottom of a tank and a wear strip disposed around the anchor plate having a c-shaped cross section. The wear strip may be slid onto the anchor plate. There is also provided a waste water treatment system employing the wear strip assembly. There is further provided a stop plate for use in the wear strip assembly.

Abstract: A clip for supporting the clarifier and the droplines in a wastewater treatment system is disclosed. The clip comprises a pair of parallel main plates separated by a bracing plate. The bracing plate is perpendicular to the main plates and is attached to the ends of each. Attached to the free ends of each of the main plates are a pair of mounting plates. These mounting plates are parallel to the bracing plate. In a preferred embodiment, the main plates each contain a hole. This pair of holes are vertically aligned, and each hole is sized to contain a dropline.

Abstract: A self-supporting modular underdrain member for use in a liquid filtration system comprises a main body or housing including a pair of longitudinally extending inclined walls which may have a pair of generally triangular transverse walls connecting the inclined walls to one another, the inclined walls each being provided with a pair of longitudinally extending recesses and a plurality of orifices communicating with each of the recesses. A pair of flanges are connected to the inclined walls for attaching the underdrain body to a floor surface so that the inclined walls, any transverse walls and the floor surface define a cross-sectionally triangular underdrain chamber. Two pairs of elongate cover plates are attached to the inclined walls over the recesses to form in each of the inclined walls a pair of longitudinally extending plenums for the equalization of backwash air and water flow, each of the cover plates being provided with a plurality of spaced slots.

Abstract: A tracking system for a flexible moving belt wherein an adjustable protuberance arrangement on the belt support structure having a preselected removable and replacable frictional surface which serves to engage against an adjacent face of the belt to align and center such flexible moving belt.

Abstract: Disclosed is a single-phase fluid distributor-mixer-extractor for separating beds of granular solids used in chromatography. The distributor includes a device for adding or removing a secondary fluid. The distributor further includes at least one calibrated orifice having a geometry designed to create a sufficient pressure drop to confine fluid turbulence inside a mixing chamber.

Abstract: Longitudinal extension and consequent destruction of spirally wound membrane modules arranged in paired axial alignment within a pressure vessel of an ultrafiltration unit are prevented by a pair of end-cap anti-telescoping devices (ATD's) and a central ATD. The central ATD is an integral assembly of a perforated circular steel plate and a solid interconnector that is concentrically disposed at its hub section with tubular ends protruding on each side of the plate and having an outer peripheral groove for an o-ring near each end for sealingly engaging the ends of a pair of membrane modules. Longitudinal extension of the spirally wound membranes is prevented by a plurality of axially protruding lugs that are concentrically disposed on each side of the plate for engaging the proximal ends of the permeate tubes and by the flat, circular faces of the central ATD engaging the ends of the membranes.

Abstract: A foul-resistant, flow-through capacitor, a system employing the capacitor and a method of separation is disclosed wherein the capacitor has at least one anode and cathode electrode pair. The electrodes are formed of high surface area, electrically conductive material and have an open, preferably straight, fluid flow-through path. Typically, the flow path is formed by a plurality of straight, parallel, spaced apart electrodes with the flow path not greater than one of the X-Y-Z distance components of the capacitor. The flow-through capacitor avoids fouling in use and may be employed with saturated waste or other streams.