Abstract: Surfactants capable of releasing and/or dissolving polymers to form water-soluble or water-dispersible polymer solutions are disclosed. In addition, polymer compositions containing a water-in-oil emulsion comprising the surfactant are provided and can be used, for example, in methods of dissolving a polymer. Also disclosed are detergent compositions and methods of cleaning articles and/or membranes using the surfactants herein. These surfactants and polymer compositions can be used in various industries including for water clarification, papermaking, sewage and industrial water treatment, drilling mud stabilizers, and enhanced oil recovery.

Abstract: Method and system for the extraction of oils from a biomass with a liquid carbon dioxide using cosolvent. The system and method can be used to extract cannabinoids from Cannabis biomass by cryogenically freezing the biomass and exposing the Cannabis biomass to sub-cooled liquid carbon dioxide and capturing a first high-terpene extract fraction, and then exposing the Cannabis biomass with a mixture of superfluid carbon dioxide and a cosolvent to capture a high cannabinoid second fraction.

Abstract: A portable filtration system is described. The system may comprise: a mixing portion, comprising: a pump adaptor and a contaminant regulator. The pump adaptor may comprise: an upper plate, a lower plate, and a screen. The screen may axially extend between the upper and lower plates, wherein the upper plate, the lower plate, and the screen define a channel of a mixing chamber. The contaminant regulator may comprise a through-passage coupled to the upper plate, wherein the through-passage is in fluid communication with the mixing chamber.

Abstract: A pneumatically-operated magnetic separator captures magnetic contaminants from process fluids. Process fluids are used in many industrial operations for various purposes. The pneumatically-operated magnetic separator can include a housing wall, a first flange plate assembly, a second flange plate assembly, a main fluid passage, tubes, and shuttles. The first and second flange plate assemblies can each include a pair of flange plates. The tubes extend between the first and second flange plate assemblies, and the shuttles are situated in the tubes. Each of the shuttles includes one or more magnets. During use, the shuttles move longitudinally in the tubes in response to pneumatic actuation and de-actuation, per an example. Weldments attach the tubes and the first and second flange plate assemblies together.

Abstract: A high flux antibacterial polyacrylonitrile-based uranium-extraction-from-seawater-seawater desalination cogeneration membrane and a preparation method thereof are disclosed. To satisfy demand of uranium-extraction-from-seawater-seawater desalination cogeneration application, polyacrylonitrile, chitosan and amidoxime modified polyacrylonitrile are taken as raw materials and a proportion of raw materials of a casting membrane are optimized in a membrane forming process. The conversion rate of polyacrylonitrile is adjusted so that formation of an amidoxime modified polyacrylonitrile powder in a casting membrane liquid mixing system is regulated and controlled, thereby significantly improving the mechanical properties, the flux, the hydrophilicity, the antibacterial property and the uranium adsorptive property.

Abstract: The disclosure includes embodiments of systems and methods for removing moisture from an electric power transformer. According to an embodiment, a moisture removal system includes a pump to move oil from the transformer into the system; one or more incoming oil moisture and temperature sensors to detect a first moisture level and temperature of oil; a processor to receive the moisture and temperature and determine an estimated paper moisture value of the insulation of the transformer, and compare the estimate to a target paper moisture value; and an overdry prevention bypass valve positioned in a first position to divert oil without drying when the estimated paper moisture value is equal to or less than the target value, and in a second position to channel oil through one or more drying cylinders when the estimated paper moisture value exceeds the target value.

Abstract: A filtering unit includes a filtering component having a pre-filter chamber circumferentially compartmented in sectors, a filtering medium and a post-filtering chamber, a divider arranged coaxially with the filtering component and having distinct distribution columns, a cover and a rotary backwashing distributor having a shutter provided with a discharge opening. The rotary backwashing distributor is mounted to rotate so that the discharge opening is periodically and selectively put into communication with each distribution column. Each distribution column periodically and selectively establishes communication between the discharge opening and respective ones of the sectors. The filtering unit further includes a dividing plate arranged between the cover and the rotary backwashing distributor, the dividing plate being detachably secured with respect to the cover and having apertures opening into the distribution columns. The shutter abuts the dividing plate at least around the discharge opening.

Abstract: A capacitive deionization desalination device is provided. The capacitive deionization desalination device includes a mesh spacer and two carbon nanotube composite electrodes. The mesh spacer is located between the two carbon nanotube composite electrodes. Each carbon nanotube composite electrode includes at least one carbon nanotube film structure and a composite carbon layer, and the carbon nanotube film structure includes at least two carbon nanotube films, and the composite carbon layer includes activated carbon and carbon black, and the composite carbon layer is located on the carbon nanotube film structure.

Abstract: A negative pressure shale shaker integrated with negative pressure generation and gas-liquid separation includes a base, a liquid inlet buffer tank, a screen frame assembly, a support frame, a vacuum hose, a damping spring, a screen frame inclination angle adjustment device, a drainage hose, a negative pressure automatic drainage device, a vacuum pan, a three-way pipe, a liquid mist separator, a connecting pipe, a vacuum pressure limiting valve, a silencer and a negative pressure fan. A drilling fluid containing cuttings, after entering the screen with a negative pressure thereunder, rapidly passes through the screen along with air into a vacuum chamber. The air in the vacuum chamber is directly drawn away through holes formed on the side plates of the screen frame by the negative pressure fan.

Abstract: The present application relates to a preparation method for recycling inorganic salt in printing and dyeing wastewater and comprises the following process steps: S1, performing impurity removal, softening, COD removal and decoloration on reverse osmosis (RO) membrane concentrated water to obtain pretreated wastewater; S2, performing two-stage electrodialysis on the wastewater obtained in step S1: returning fresh water obtained in a first-stage electrodialysis desalination chamber to a front end of the RO process, and taking saline water obtained in a concentration chamber as raw water of a second-stage electrodialysis desalination chamber and a second-stage electrodialysis concentration chamber; and returning the fresh water obtained by the second-stage electrodialysis desalination chamber to the first-stage electrodialysis concentration chamber; and S3, dealkalizing the concentrated saline water obtained in the step S2 and then adjusting the pH value to obtain concentrated saline water capable of being reuse

Abstract: The present invention generally relates to a method of reducing contamination from plastics. The resulting purer plastic can be used in demanding applications.

Abstract: A wastewater treatment method includes: a soft water treatment 1 of crystallizing calcium carbonate from wastewater to remove the calcium carbonate therefrom; and an electrolysis 2 of electrolyzing some of the wastewater from which the calcium carbonate has been removed to obtain an acidic aqueous solution and an alkaline aqueous solution, wherein at least some of the alkaline aqueous solution is circulated to be used in the soft water treatment 1.

Abstract: The present disclosure is directed to methods and systems of purifying solvents. The purified solvents can be used for cleaning a semiconductor substrate in a multistep semiconductor manufacturing process.

Abstract: The invention relates to a water treatment plant comprising: means for supplying water for treatment, wherein said water has been coagulated previously, a flocculation-decantation device having means for dispensing at least one flocculant reagent, means for dispensing at least one ballast, means for extracting decantation sludge, means for discharging the treated water, means for separating said ballast contained in the ballasted sludge, and means for recycling the ballast that has been cleaned in this manner back into the flocculation-decantation device, characterised in that: said flocculation-decantation device has a single tank in the lower portion of which a stirring mechanism is arranged; wherein said single tank comprises slats in its upper portion; and said slats are separated from the stirring mechanism by a distance “d” which is between approximately 0.5 metres and approximately 3 metres. The invention also relates to a method using said plant.

Abstract: A filtration device includes a container, a channel member, and a filter. The container has a space of variable volume that contains a liquid, the liquid including a target substance to be separated by filtration. The channel member includes a channel and an opening that are defined therein, the opening being provided at a position along the channel in a direction transverse to the direction in which the channel extends. The channel member has an attachment part to which the container is attached and which provides communication between the space in the container and the channel. The filter is attached inside the channel member and positioned at the opening.

Abstract: The invention relates to a tailings settling-dewatering-solidifying device and an experimental method thereof, which falls into the technical field of mine engineering and mine geotechnical engineering, comprising a tailings settling device including a water tank, charging barrels I and II, and a reaction tank made of a transparent material, a dewatering device including an intelligent type controller, a circular base, a gas cylinder, a permeable stone, a piston, a metal rod and a water return barrel, a solidifying device including a charging barrel III and a tailings barrel, a stirring system including a stirrer, a rotary shaft and an electric motor, a dynamic real-time monitoring system including a high-definition electronic camera and a computer, and a three-layer framework.

Abstract: A waste treatment process utilizes a two-stage digestion process with a thermophilic digester, a heat exchanger, and a mesophilic digester. The pH of the thermophilic digestate is increased by removal of carbon dioxide with an air stripper, or by adding a pH increasing reagent upstream of the heat exchanger. The pH adjustment of the digestate protects the heat exchanger and downstream equipment and processes from struvite formation. A struvite reactor may be located in various locations downstream of the heat exchanger to produce a treated digestate or effluent that contains struvite, which can optionally be recovered for beneficial use.

Abstract: An apparatus and a method for treating saltwater and removing chlorine in water to make a variety of sodium-based byproducts and chlorine gas is disclosed. The apparatus comprises a feed tank for receiving water. The feed tank is coupled to a plurality of Radio frequency (RF) chambers. Each of the RF chambers comprises an inlet and an outlet. The outlet is coupled to a treated water effluent manifold. Further, each RF chamber is coupled to a vacuum manifold. Each RF chamber comprises a recirculation pipe to pump water back into the feed tank. The RF chamber comprises a RF system used for bombarding RF energy at predefined frequencies on the water in order to liberate chlorine isotope. Additionally, the RF system bombards RF energy to stretch hydrogen bond in the saltwater to a point of breaking a molecule by applying low pressure. The hydrogen bond captures chlorine. Subsequently, the water is sent through the outlet to the treated water effluent manifold.

Abstract: The present invention relates to a modified MPD vessel which allows the coupling of identical secondary MPD vessels, which can house either sand filter and/or sand cyclonic MPD internals, to the vessel without the need for any vessel or pipework modifications whereby, a plurality of these MPD vessels can be further coupled using identical inlet and outlet configurations. This configuration of MPD vessels allows for improved means for removing produced solids from a hydrocarbon fluid stream and allows for a vastly more flexible system as a whole.

Abstract: A full-effect reverse osmosis membrane element includes a central tube and a reverse osmosis membrane assembly wound around the central tube. The reverse osmosis membrane assembly includes a pair of reverse osmosis membranes attached at front surfaces thereof and wound around the central tube. A water feed channel has a water inlet formed at front edges of the reverse osmosis membranes and a water outlet formed at rear edges of the reverse osmosis membranes. A water division structure is arranged in the water feed channel, and includes a first water division band forming a preset space with the central tube when the reverse osmosis membranes are in an unfolded state. The first water division band divides the water feed channel into a first flow channel having a gradually decreasing cross-section and a second flow channel in communication with the first flow channel.