Abstract: A water treatment apparatus includes a mixing tube through which the waste water passes for mixing into the waste water a plurality of chemicals for causing flocculation of contaminants. The mixing tube is connected to a settling chamber for allowing settling of the flocculated contaminants and for supplying clarified water at an outlet of the settling chamber. The mixing tube has a plurality of injection members at spaced positions along the duct, each including a pump and a chemical supply for injecting a selected quantity of a selected chemical into the duct and each including a respective mixing member and drive for mixing the chemical into the water in the duct. An electrical separation section is provided in the system before or after the settling and includes a duct, into which the water is introduced and a plurality of amorphous metal plates across the duct arranged to be charged at low voltage.

Abstract: A UV-assisted advanced-ozonation water treatment system comprises a water treating tank 1, an ozonic water tank 2, an ozonized gas generator 3, and a UV light source 4 disposed in the water treating tank 1 and having a UV-radiating surface 4a, and an ozonic water jetting device including jetting nozzles 5 for jetting the ozonic water onto the UV-radiating surface of the UV light source. An ozonized gas diffusing device 12 is placed in the ozonic water tank 2. An ozonized gas generated by the ozonized gas generator 3 and compressed by a compressor 13 at a pressure in the range of about 2 to about 3 kg/cm2 is diffused into the ozonic water tank 2 by the ozonized gas diffusing device 12. A high-pressure, a high-ozone-concentration ozonic water produced in the ozonized water tank 2 is jetted through the jetting nozzles 5 onto the UV-radiating surface 4a.

Abstract: A medium having a support structure configured for circulation of a fluid therein, such as a replaceable filter cartridge, including a sanitizing agent which contains one or more reactants that are chemically configured for delivering chlorine dioxide or other sanitizing agents in a controlled dose to sanitize, deodorize, and disinfect upon being wetted by the fluid and positioned in the medium support structure to be exposed to the fluid circulating therein.

Abstract: A kit for constructing a de-aerator that includes a concentrator is adapted to be connected to a standard pipe coupling. The concentrator is inserted in the path of liquid conveyed through the pipe coupling for aggregating gas, and directing the gas to a cavity. The cavity is encased by the fitting which is a vertical, cylindrical sheath with one end adapted to be inserted into standard pipe couplings, and the other end adapted to be connected with the cap. The cap includes a vent adapted to open and shut in response to lowering and raising of the level of the liquid in the cavity below/above a threshold, respectively.

Abstract: A degassing device (10), a hydrogen dissolving device (12), and a palladium catalyst column (17) are provided in that order downstream of a high-purity water production device (1), and an impurity removal device (19) is connected to the exit side of treated water of the palladium catalyst column (17). The impurity removal device (19) removes impurity ions which are eluted into the water to be treated or impurity particulates which mix in with the water to be treated during the treatment in the palladium catalyst column (17). The impurity removal device (19) comprises an ion exchange device (20) and a membrane treatment device (21) such as a ultrafiltration membrane device, a reverse osmosis membrane device or the like. By providing an impurity removal device (19) in this manner, it is possible to remove impurities generated during hydrogen peroxide removal treatment by the palladium catalyst and to prevent degradation in quality of hydrogen-dissolved water.

Abstract: First, the overall quantity of bubbles in a coating liquid is reduced in advance by vacuum deaeration performed in conjunction with preparation of the coating liquid in a stirring tank in a first step, then bubbles of relatively large sizes, of bubbles that have not been removed in the first step are removed by a tank type deaeration device with ultrasonic waves in a floatation tank in a second step, and finally bubbles of very small to small sizes that are difficult to remove in the first and second steps are dissolved in the liquid under pressure with ultrasonic waves and thereby removed in a pipeline in a third step. According to this, bubbles in the coating liquid can reliably be removed irrespective of the nature of the coating liquid, a large amount of coating liquid can be treated, and the possibility that the quality of the deaerated coating liquid is adversely affected is eliminated.

Abstract: In a process for removing bubbles from viscous polymer solutions (P) in which the content of dissolved gases lies below the saturation limit, the viscous polymer solution (P) is subjected to a superatmospheric pressure. The superatmospheric pressure is such that the gases contained in the bubbles of the polymer solution (P) dissolve.

Abstract: In the present invention, solid contents 38, which are collected by a solid-liquid separation device 33 in a solid-liquid separation tank 14 and charged into a decomposing treatment tank 11, are decomposed to water and CO2 by the action of aerobic microbes and the air (oxygen) supplied from a lower aeration tank 12 and substantially disappear. The oil contents contained in the water having been decomposed is removed by an oil-water separation tank 13.

Abstract: A chitosan enhanced dewatering bag reduces the amount of silt, sedimentation and suspended solids from incoming water. The dewatering bag includes a first permeable membrane having a first open end or opening, and one or more applications of chitosan located within the bag. A second permeable member may be attached to the first permeable membrane so that it defines at least a portion of the outer surface of the dewatering bag. A baffle wall may also be located inside the dewatering bag to reduce the access of silt and sediment to this second permeable membrane. Fluid entering the first opening can readily flow through the dewatering bag, while unwanted dirt and other solids are impeded from such flow.

Abstract: The water treatment cartridge is a cartridge adapted to fit into a conventional water filter housing to release a sanitizing dose of a water-treating chemical, and in particular chlorine dioxide, into a water treatment system or unit process. The cartridge is filled with a water treating media, comprised preferably of a mixture of an inert filler material and a chemical composition that releases chlorine dioxide on contact with water. The concentration of the chlorine dioxide released into the water, as well as the duration of the release, may be varied by the selection of the filler material and amount of the filler material in the water treating media.

Abstract: There is disclosed an automatic chemical feed system for retro-fitting to any existing fluid circulating system of the type having an inlet pipe which feeds water to a fluid reservoir and an outlet pipe for feeding fluid to the circulating system, the present system including an inlet pipe adapter for inner connection with the inlet pipe, a fluid diverter connected to the adapter for diverting a portion of the flow, a chemical chamber containing a supply of fluid purification chemicals in solid particulate format, the chamber being in fluid communication with the diverter, and the chamber having an inlet opening for allowing fluid to enter the chamber, and an outlet opening for passing treated fluid out of the chamber back to the fluid reservoir for circulation in the circulating system.

Abstract: A wastewater aeration system that can be pivoted upwardly to expose the treatment basin floor for removal of accumulated grit or other solids. The aeration system includes a blower and a rigid or flexible supply conduit extending into the basin to supply lateral pipes with air. The laterals normally extend horizontally along the basin floor and carry air diffusers which discharge air into the basin. A winch and cable system or other mechanism can be operated to pivot the lateral pipes and diffusers upwardly away from the basin floor so that they are out of the way of equipment used to remove grit from the floor. A vertical track may be provided along a wall of the basin to accommodate raising of the lateral pipes and diffusers out of the basin.

Abstract: A gas-liquid separator uses a helical passageway to impart a spiral motion to a fluid passing therethrough. The centrifugal fore generated by the spiraling motion urges the liquid component of the fluid radially outward which forces the gas component radially inward. The gas component is then filtered through a gas-permeable, liquid-impervious membrane and discharged through a central passageway.

Abstract: The invention is a stackable packing element for use in degassing liquid ophthalmic lens monomer, and to a modular degasser and process, including an in-line degassing process, employing same. The stackable packing element is comprised of a body module and a removable puck component.

Abstract: Discloses apparatus and method to deaerate and condition bitumen froth obtained from a primary tar sands bitumen extraction process comprising a vessel containing a plurality of inclined plates, called a static deaeration conditioner. The inclined plates of the static deaeration conditioner are substantially equidistantly spaced from each other and are inclined at an angle to the horizontal. The plates form a corresponding plurality of channels there between for the froth to be deaerated to flow along. The declination angle is selected to obtain a gravity induced froth flow rate in the channel that exhibits a lamella effect near laminar flow characteristics, which promotes the creation of a water-enriched froth region near the lower plate of the channel. A braking pump can be provided on an outlet port of the vessel to control the rate of flow through the vessel of the froth to be deaerated and conditioned.

Abstract: Systems for treating water containing unwanted contaminants. More particularly, the present invention relates to waste water treatment systems including biological media used to aerobically or anaerobically treat solid and liquid waste in water for large and small-scale waste water systems in a way that minimizes the size of the system required to output high-quality, environmentally suitable water that is depleted of ammonia, nitrites, nitrates and other contaminants.

Abstract: A water purification apparatus for purifying water from a municipal water supply prior to a point of use has multiple water purification units including a carbon filter, a particle filter and an ultraviolet light source connected in series. The carbon filter removes free residual chlorine, the particle filter removes particles including carbon particles from the carbon filter, and the ultraviolet filter kills bacteria. A bypass conduit connected in parallel with the water purification units and valves permit system maintenance during which the water from the supply can flow directly to the point of use.

Abstract: The invention encompasses polishing systems for polishing semiconductive material substrates, and encompasses methods of cleaning polishing slurry from semiconductive substrate surfaces. In one aspect, the invention includes a method of cleaning a polishing slurry from a substrate surface comprising: a) providing a substrate surface having a polishing slurry in contact therewith; b) providing a liquid; c) injecting a gas into the liquid to increase a total dissolved gas concentration in the liquid; and d) after the injecting, providing the liquid against the substrate surface to displace the polishing slurry from the substrate surface.

Abstract: A process for treating contaminated fluid is disclosed. An apparatus for treatment of contaminated fluid comprises: an integral tank; an inlet for introducing a mixture of flocculent polymer and contaminated fluid; a mixer in the bottom of an innermost cylinder that has first stage aerating means; a rotary skimmer above the fluid level of the innermost cylinder and a second stage aeration cylinder that has second stage aerating means surrounding the innermost cylinder; a de-aeration baffle on the same plane as the rotary skimmer and extending around an outermost cylinder; fluid level control means between the second stage aeration cylinder and the outermost cylinder, directing fluid flow from the second stage aeration cylinder out of the tank; means for powering the mixer and the rotary skimmer; and an outlet permitting clear fluid to exit the tank and an outlet permitting waste effluent to exit the tank.

Abstract: Said equipment include a tank-filter (1, 15) in which a pretreatment stage is carried out. The tank (1) is a decanter to which a flocculant that is uniformly mixed with an agitator (3) can be added. The sludge is removed by delivering it to a filter bag (5). The permeates are then fed to a collecting tank (6) and pumped to the same tank (7) receiving the clarified waters. The permeates are then decanted from said tank (7) through a safety filter (8) to a battery of activated carbon columns (9) where they arm purified by adsorption until the established threshold values have been reached. In another embodiment, the reservoir-filter (15) is a polypropylene bag filter with diatomaceous earth, wherein the liquid passes directly to the decanting tank and is then pumped to the battery of activated carbon columns (9).