Abstract: The device comprises filtration means and pumping means each housed in a compact unit mounted with the panels of a swimming pool basin. The unit includes a compartment (A) housing the filtration means in communication with the water of the basin, and a compartment (B) out of the water which contains the pumping means. The unit includes in the filtration compartment an assembly having first and second 90° elbows for intaking water from the basin. One of the elbows has arrangements for coupling to the bottom of the member containing the filtration means, while the other elbow has arrangements for coupling with a straight element. The unit also includes in the pumping compartment third and fourth 90° elbows for the intake of water. One of the third and fourth elbows is coupled to a straight element, and the other elbow of the third and fourth elbows is connected to a delivery side of the pumping means. Also included in the pumping compartment are fourth and fifth elbows for delivering water to the basin.

Abstract: Apparatus for separating solids from flue gas in a circulating fluidized bed (CFB) boiler includes plural vertical, impact type particle separators made of cooling tubes located within the CFB in a plurality of staggered rows. One embodiment employs a plurality of stacked, slip fit elements having apertures which accept the cooling tubes. The slip fit elements cooperate with one another to form a collecting channel, typically U-shaped, which separates particles from flue gases conveyed across the particle separators. Shiplap joints in between the individual slip fit elements prevent gas and solids from leaking therebetween and allow for thermal expansion. Alternatively, the impact type particle separators include cooling tubes connected to one another to form a unitary structure. Pin studs welded to the cooling tubes and covered with a coating of refractory; ceramic tiles; metal or ceramic spray coatings; metal or ceramic castings; weld overlay; and/or shields provide erosion resistance.

Abstract: A fluid treatment device, particularly useful for ultraviolet radiation treatment of fluids such as water. The device comprises a housing for receiving a flow of fluid. The housing has a fluid inlet, a fluid outlet, a fluid treatment zone disposed between the fluid inlet and the fluid outlet and at least one radiation source having a longitudinal axis disposed in the fluid treatment zone substantially transverse to a direction of the flow of fluid through the housing. The fluid inlet, the fluid outlet and the fluid treatment zone are arranged substantially collinearly with respect to one another. The fluid inlet has a first opening having: (i) a cross-sectional area less than a cross-sectional area of the fluid treatment zone, and (ii) a largest diameter substantially parallel to the longitudinal axis of the at least one radiation source assembly.

Abstract: An apparatus and method for treating water to be supplied to a ballast tank uses a water pathway having a main inlet for connection to a body of navigable open raw water containing sediment and marine organisms, and a main outlet for connection to the vessel's ballast tank(s). A centrifugal separator is provided in the pathway and has a separator inlet for receiving the raw water. The centrifugal separator separates sediment with some water from the raw water to produce initially processed water which contains at least some marine organisms. The separator has a first outlet for returning the sediment with some water to the body of raw water and a second outlet for supplying the initially processed water to the pathway.

Abstract: A stand-alone filtering apparatus for use with indoor barbecuing includes a base configured for the reception of a heating assembly and a filter unit which is selectively positionable in a vertical direction relative to the base. The filter unit includes a filtering element for removing contaminants from a medium as the medium passes therethrough and a ventilation system for creating an air flow for drawing the medium and the contaminants through the filtering element.

Abstract: An air filter system for a clean room has a number of filter modules (16) secured together at intersecting corners by holding rods (12) secured to a supporting surface, and at least one support bracket (14, 14′, 14″) on each holding rod. The filter modules include top panels (18, 18′), that, if separable, are secured to upper supporting brackets and a filter element (19) having a rigid frame (21) and filter panels (27) held therein secured to lower brackets. Light fixtures (38) may be secured to center divider (40) held in the filter frames and diffuser panels (50) or aerodynamically-shaped elements (60) may be secured to the support brackets, below the filter elements.

Abstract: A method for treating waste water and a plant designed for preventing the precipitation of carriers under the air blower installed for reaction tank or aeration tank, wherein the plant comprises an aeration tank 1 containing the carriers 2 for growing microorganism for biological treatment of waste water or the subunit 1a joined with the aeration tank through a partition wall 4 including the screen capable of separating the carriers 2, air blower 3 provided for the aeration tank or the subunit of the aeration tank, air bubble generator 5 or submerged stirrer provided under the air blower 3 for creating the flow of water so that the carriers 2 under the blower 3 can be liquidized by the flow of water created by the air bubble generator or the submerged stirrer to prevent the precipitation of the carriers 2 under the air blower 3, whereby not only the precipitation of the carriers under the air blower 3 can be prevented but also the water treatment efficiency and capacity meeting the designed numerical requirem

Abstract: A swimming pool installation including a skimmer device, a vacuum system, a pump and a valve module is disclosed. A seat divides the valve module into an upstream chamber coupled to the skimmer device and a downstream chamber coupled to the vacuum system and the pump. A piston having a seal is mounted in the upstream chamber for reciprocal movement in opposition to the seat and is biased away from the seat. A pawl is mounted to the piston for rotation and stops are mounted adjacent the pawl. The piston moves reciprocally in response to a cyclical application and removal of water movement there across caused by a cyclical operation of the pump, which causes the pawl to interact with the stops and cycle between a locked condition securing the seal away from the seat and an unlocked condition permitting the seal to move against the seat.

Abstract: A method of selectively adsorbing propylene in mixtures of propylene/propane and propylene/olefins through the use of zeolites having structures with a maximum of 8-member rings of tetraheda controlling the diffusion rate. Suitable zeolite adsorbents are those having the CHA and ITE structure types. Other 8-member ring zeolites, including aluminosilicates, with a Si:Al molar ratio of at least about 200 and having substantially no free acid are also suitable adsorbents.

Abstract: A improved activated sludge system and method for treating wastewater containing contaminants is disclosed which offers a broad array of advantages over conventional activated sludge wastewater treatment systems, including smaller size, higher rates of operation, higher oxygen transfer efficiency, lower operating costs, and a substantially decreased level of excess sludge production. The improved activated sludge waste treatment system of the present invention has two processing tanks rather than the several tanks that are commonly found in activated sludge systems for treatment and sludge management equalizations, including anaerobic processes. The first processing tank is a contact tank which hosts a reaction which functions not merely to digest the maximum amount of contaminants, but instead to bind contaminants to the microorganisms through absorption, adsorption, precipitation, or digestion so that they can then be removed from the liquid in a solid/liquid separator.

Abstract: Wastewater can be treated using a combination of a settleable solids separator, such as a vortex separator, and a gas floatation separation system.

Abstract: The present invention relates to a pleated filter made of a multi-layer filter medium, including at least one filter paper layer having area weights of 30-100 g/m2, a microfiber nonwoven fabric layer having area weights 5-120 g/m2 and a support nonwoven fabric layer made of synthetic, polymeric fibers having area weights of 10-120 g/m2. The layers of the pleated filter contain fused polymer areas by which the fabric layers are bonded to the paper layer, and by which the fabric layers are made firmer within themselves. When subject to a fractional efficiency test at an initial pressure difference of at most 180 Pa, at a boundary speed of approximately 2.62 m/s and a flow speed through the filter medium of approximately 0.13 m/s, the pleated filter is able to separate at least 90% of particles greater than 0.3 &mgr;m, at least 92% of particles greater than 0.

Abstract: The present invention provides an air-conditioning air filter capable of cleaning and replacing only a filter element thereof for resources saving, refuse reduction, and cost reduction, and also preventing air leakage due to expanded deformation of a main box.

Abstract: A steam humidification apparatus includes a dispersion tube having a jacket defining a jacket area. The steam humidification apparatus includes a steam line for supplying steam to the jacket. The steam humidification apparatus includes a valve having a seat, the valve being positioned to deliver dry steam to the dispersion tube. The steam humidification apparatus includes a separator in communication with the valve, the separator being mounted to receive steam and to deliver dry steam to the valve. The separator, the valve, and the dispersion tube are all positioned generally coaxial.

Abstract: An apparatus and method for treatment of waste water effluent includes a main conduit connected to a source of waste water, and a removable filter positioned within the main conduit, the filter comprising a light weight particulate material for filtration of the effluent. A drain field for filtration treatment of waste water effluent comprises a source of waste water effluent, a main conduit in fluid connection with the source of waste water, and at least one in-line filter positioned within the main conduit, the filter comprising light weight particulate material. The drain field may comprise at least one extension conduit connected in fluid communication with the main conduit and extending substantially upwardly therefrom, said extension conduit having a removable cap comprising a sensor to thereby generate a signal when water in said extension conduit reaches a predetermined level.

Abstract: A method and apparatus for treating sewage in cold regions including a pretreatment stage, an aerobic treatment stage, and a discharge stage, where cold outside air is combined with warm recirculating air from within the sewage treatment system to provide oxygen for the aerobic treatment of the sewage, with the treated sewage being discharged intermittently in high volume, high flow-rate batches to prevent freezing.

Abstract: A component gas concentrator includes an air compressor/vacuum pump, an air-tight first container containing a molecular sieve bed, the first container in fluid communication with the compressor/vacuum pump through a first gas conduit, and an air-tight second container in fluid communication with the first container through a second gas conduit. A gas flow controller such as PLC controls actuation of valves mounted to the gas conduits.

Abstract: A desorbable sorption filter, in particular for a heating or air-conditioning system of a motor vehicle, has a metallic support (12) which can be heated by flow of current and an adsorber (14) mounted at or on the support (12). To provide an improved, directly heatable sorption filter which particularly enables inexpensive production and good electrical and thermal conductive contact without the use of adhesives, it is proposed for the adsorber (14) to be of planar design and to be mechanically connected to the support (12, 112) by means of holding elements (26) formed integrally on the support (12, 112).

Abstract: A treatment unit is disclosed for treating a fluid in continuous mode. This treatment unit provides the opportunity to carry out simultaneously an enzymatic transformation and a capture of a fluid element. The unit has a reservoir with a fluid inlet for receiving a fluid to be treated and a fluid outlet for releasing a treated fluid. The unit also has removable cassettes provided with a reactive material for treating the fluid and two spaced-apart baffle walls in the reservoir for regulating the flow of the fluid therein. The unit further has a reaction chamber defined between each of the two spaced-apart baffles walls. The reaction chamber has an opening for removably inserting therein the cassette. Yet, the unit further has mounting means for mounting the cassette in a reaction chamber spaced-apart from the two baffle walls, whereby a cassette is disposed between two spaced-apart baffle walls and causes the fluid to flow in a zigzag pattern thus further regulating the flow of the fluid.

Abstract: A filter assembly for a disk drive includes an outer shell through which gases flow in and out of the disk drive. The shell includes a tubular housing that extends into the disk drive. A first filter lies secured to an end portion of the housing and filters gases circulating within the disk drive and entering into the disk drive. The housing contains a second filter that includes an adsorbent body and a third filter that extends across an opening in the housing and helps contain the second filter within the housing.