Abstract: A non-dissolvable immersible dispensing puck in the shape of a dissolvable halogen puck when the dissolvable halogen puck is in an undissolved state with the non-dissolvable immersible dispensing puck physically interchangeable with a dissolvable halogen puck when placed in a dispenser for normally holding only a set of halogen pucks to enable a single dispersant dispenser to be converted to a dual dispersant dispenser without changing the structure of the single dispersant dispenser by placing a dispenser within a dispenser wherein only one of the dispensers may be provided with adjustable water ports.

Abstract: The present invention describes a hybrid device allowing for purification and either recycling of water or discarding of water, wherein said hybrid device comprises a recirculation loop which facilitates recirculation of water within said hybrid device, and also comprises: a filter system comprising at least one filter; at least one water quality sensor, a modified drain, which is adapted to collect the water used and to facilitate the stream of water used towards the recycling loop and filter system, so that water can be purified and recirculated, or towards drainage; a water treatment unit arranged for hygenisation of water; a functionality sensor for the water treatment unit; wherein the hybrid device is arranged so that: it can operate in a recirculation mode providing purification and recirculation of water, until the water passing through said hybrid device is at a maximum level of contaminants; when any of said sensors is indicating the need to do so, and in particular when said at least one water q

Abstract: This invention relates to a method for monitoring and controlling the relative concentration of bromide ion used in the cyclic process for enhanced sanitation and oxidation of aqueous systems at aquatic facilities.

Abstract: A method of automatically controlling chloramine concentration in a body of water contained in a reservoir includes: (a) determining residual chloramine concentration in a water sample obtained from the body of water; (b) determining at least one of the following when the residual chloramine concentration is below a predetermined target chloramine concentration level: (i) an average rate of change in total chlorine concentration; and (ii) an average rate of change in oxidation-reduction potential; and (c) automatically engaging a supply of ammonia and a supply of chlorine to add both ammonia and chlorine to the body of water at a weight ratio of chlorine to ammonia of 5:1 or less when the average rate of change in total chlorine concentration is below a set rate of change and/or the average rate of change in oxidation-reduction potential is above a set rate of change.

Abstract: A hardness reduction filter is provided. The hardness reduction filter may include a filter housing having a space formed therein, a filter provided in the space of the filter housing to filter out foreign materials from water flowing into the filter housing, and hardness reduction catalysts provided between the filter housing and the filter and configured to perform at least one of removing a hard water material contained in the water or preventing formation of a scale inducing material in the water flowing into the filter housing.

Abstract: Generating ferrate ex situ by activating persulfate with BOF steel slag fines and/or ferric iron. A persulfate solution flows therethrough or thereover the BOF steel slag within, for example, a filter, fluidized bed or continuously stirred tank reactor. The ex situ generation will produce a leachate that contains multiple reactive oxidant species (ROS) such as hydrogen peroxide (H2O2), superoxide (O2.), sulfate radicals, hydroxyl radicals (OH.) and uniquely ferrate species including Fe IV, V and VI. These ROS will destroy organic compounds, sterilize, and can oxidize inorganics and a wide range of targeted contaminants in distressed water (e.g., drinking water, process water, wastewater, industrial process streams/waters, municipal process streams/waters, landfill leachate, sewage/septic systems, bilge waters, drilling fluids, mine effluents).

Abstract: According to principles of the present inventive concepts, an HVAC fluid conditioning system comprises an inlet port configured to receive HVAC fluid from an HVAC condensation line. A conditioning system treats the HVAC fluid with a chemical or other treatment process to prevent the growth of harmful pollutants within the HVAC condensation line. The treated HVAC fluid is then released from the conditioning system through an outlet port thereof and back into the HVAC condensation line. A trap system can be provided to trap harmful gases created during the HVAC fluid treatment process.

Abstract: On example of a fluid dispensing system includes an unfiltered water container body defining an internal storage volume configured to hold a volume of water, a fluid outlet arranged for fluid communication with the internal storage volume, and a filter element positioned in the internal storage volume. With this configuration, a water dispensing process can be performed in which a single continuous stream of unfiltered water from the unfiltered water container body can pass through the filter element and be dispensed from the unfiltered water container body as a stream of filtered water. A water soluble tablet with an additive is positioned in the internal storage volume downstream of the filter medium such that the filtered water can pass out of the filter element and into contact with the water soluble tablet before being dispensed from the fluid outlet.

Abstract: A blood processing system for collecting plasma reduced platelets and anticipating plasma return includes a venous access device, a blood component separation device, a first return line, a recirculation line, and a second return line. The venous access device draws whole blood from a subject and returns blood components to the subject using a first pump. The blood component separation device separates the drawn blood into a first blood component and a second blood component, and sends the first blood component to a first blood component bag. The first return line fluidly connects the venous-access device and the blood component separation device. The recirculation line connects the first blood component container and the separation device. The second return line fluidly connects the first blood component container and the first return line and is configured to return the first blood component within the first blood container to the subject.

Abstract: The invention provides a water purification system or a water treatment system comprising carbon nanotubes, as well as methods for purifying or treating water using the systems of the invention.

Abstract: The present subject matter relates to the development of active catalyst composite based on supported transition metal oxides, especially, Cu, Co that are effective in the removal sulfides in the diluted spent caustic. The process for the reduction of sulfides in spent caustic comprises of reacting various organic and inorganic sulfides with molecular oxygen in the presence of active catalyst at various reaction temperatures ranging ambient to 200° C. and pressures between atmospheric pressure to 60 bars. The process also relates to complete scheme for the removal of sulfides in spent caustic.

Abstract: A coalescing filter element provides an integrated filter element with a three stage design with a hydrophobic or hydrophilic coalescing layer. A coalescing filter element comprises: a) At least one particulate filtration layer; b) A coalescing layer promoting coalescing of water particles, wherein the coalescing layer is downstream of the at least one particulate filtration layer relative to the flow of fluid through the element; c) An annular coalescing space downstream of the coalescing layer; d) A sump in a lower portion of the filter element in fluid communication with the annular coalescing space; and e) A hydrophobic layer downstream of the annular coalescing space, wherein fluid being cleaned by the element flows through the hydrophobic layer. The coalescing layer may be a hydrophobic or a hydrophilic coalescing layer. A filter assembly will include the coalescing filter element of the present invention.

Abstract: The present invention relates to modification to permeate channels and permeate materials in a cross-flow filtration system to improve performance in counter current filtration having both retentate channels and permeate channels wherein a solution is pumped through one of the channels and drawn through a membrane to one of the other channels to assist in positive pressure driven filtration by using the osmotic pressure, concentration, or preferential solubility difference between the retentate and permeate flow streams thereby increasing or altering the flux through the membrane separating the flow streams.

Abstract: The present invention relates to the field of extraction of sulphur-containing compounds such as mercaptans, COS, H2S or CS2 from a hydrocarbon cut. This selective extraction is carried out by bringing the hydrocarbon cut in the liquid phase into contact with an alkaline solution, for example caustic soda. The process in accordance with the invention is an improved process for the regeneration of alkaline solution which can be used to reduce the quantity of alkaline solution necessary in the regeneration section.

Abstract: The present description relates to a method and a system for generating a Fenton reagent. Particularly, the description relates to a method and a system for oxidizing contaminants from wastewater. The Fenton reagent can react with various organic compounds and metallic elements. The method of producing an in-situ Fenton reagent comprises: providing an aqueous solution comprising at least one contaminant; providing at least one column comprising i) an inlet and an outlet separated by a flow chamber, and ii) a mass of iron fibre in the flow chamber between the inlet and the outlet; providing at least one dispenser retaining a hydrogen peroxide generating solid and permitting passage of the aqueous solution through the dispenser; optionally acidifying the solution upstream of the at least one column, and passing the aqueous solution through the at least one column.

Abstract: Disclosed are a sterilizing structure of a water outlet and a water treatment apparatus including the same. The sterilizing structure of the water outlet according to an embodiment of the present invention may comprise a water outlet for discharging treated water treated in a water treatment device externally, and a sterilizer for sterilizing the water outlet.

Abstract: The present invention provides a method for suppressing a decrease in the concentration of an isothiazoline compound, wherein even if an addition concentration of the isothiazoline compound used as an antibacterial agent is low in a water system, the decrease in the concentration thereof can be suppressed so that the residual rate thereof after 24 hours can be raised. The method is carried out in a manner wherein to a water system, an isothiazoline compound is fed with an addition concentration of 0.2 mg/L or more and less than 1 mg/L, and a combined chlorine agent consisting of a chlorine stabilizer and a chlorine-based oxidant is added so as to maintain a concentration thereof at 0.3 mg/L as Cl2 or more and 6 mg/L as Cl2 or less therein.

Abstract: This invention relates to a method for monitoring and controlling the relative concentration of bromide ion used in the cyclic process for enhanced sanitation and oxidation of aqueous systems at aquatic facilities.

Abstract: A method for decontamination of nitroarenes including fabricating an exemplary nanomotor and chemically reducing nitroarenes of an acidic solution using the exemplary nanomotor. Fabricating the exemplary nanomotor may include depositing a plurality of magnetic nanoparticles on an Au nanosheet and depositing a plurality of zinc (Zn) nanoparticles on the plurality of magnetic nanoparticles. Chemically reducing the nitroarenes of the acidic solution may include generating hydrogen bubbles in the acidic solution by adding the exemplary nanomotor to the acidic solution and guiding the exemplary nanomotor in the acidic solution by applying a magnetic force to the exemplary nanomotor. Generating the hydrogen bubbles in the acidic solution may include reducing hydrogen ions in the acidic solution through a chemical reaction between the hydrogen ions and the plurality of Zn nanoparticles.

Abstract: Methods for reducing and regulating the acidification of water are provided. The method for reducing the acidification of water includes contacting at least one melanin material with the water and catalyzing a reaction between the water, CO2 and/or bicarbonate that produces glucose and increases pH of the water. The acidification of water is regulated by removing the at least one melanin material from the water once a desired pH of the water has been attained. The methods for reducing and regulating the acidification of water are particularly suited for the treatment of seawater that has been acidified by naturally occurring or artificially initiated reactions that increase free hydrogen ions in water, for example absorption of atmospheric carbon dioxide.