22 results about "Foam fractionation" patented technology

The present invention provides improved methods for purifying and / or removing multiply charged cations and suspended solids from water. In particular the process relates to an additive composition that has the appropriate surfactant characteristics for effectively removing multiply charged cations and suspended solids from an aqueous or oil / aqueous mixed phase via foam fractionation. According to the invention, a hydrophobically modified polymer that acts as an associative thickener is used in the presence of a source of alkalinity or anionic reactant as well as surfactant in appropriate ratios to facilitate multiply charged cation and suspended solids removal for water purification in any of a number of commercial, environmental and industrial applications.

Certain aspects of the present disclosure relate to systems and methods related to removal of PFAS molecules. In one aspect, a system including a foam fractionation system is generally described. In some embodiments, the foam fractionation system includes a vessel and / or a bubbler. According to certain embodiments, a container includes an elongate portion and a body portion including a main body portion and a tapered portion. The bubbler is configured to receive a gas input and inject bubbles into the interior volume of the container. An input liquid solution comprising a surfactant and one or more perfluoroalkyl and / or polyfluoroalkyl species (PFAS) molecules enters a foam fractionation system. The input liquid solution is treated by the foam fractionation system such that part or all of the PFAS molecules are separated into the foam material output. In some embodiments, the liquid output exiting the foam fractionation system contains a relatively small amount of PFAS molecules, if any. In some embodiments, the liquid output and / or the foam material output is recovered (e.g., after passing through one or more foam fractionation systems one or more times).

A foam separation method for harvesting Cr 3+ This method, belonging to the field of heavy metal wastewater treatment, uses the natural nonionic surfactant Sapindus mukorossi extract as a foaming agent and a trapping agent to treat Cr-containing wastewater. 3+ Cr in aqueous solution 3+ Foam separation and harvesting were performed. The critical micelle concentrations of Sapindus mukorossi extract and five other surfactants were determined, and the effects of pH, gas flow rate, liquid loading, collection time, Sapindus mukorossi extract concentration, and Cr were investigated. 3+ The effect of initial concentration on separation efficiency was investigated, and the process was optimized through orthogonal experiments. The results showed that at room temperature, with pH 6.5, gas flow rate 400 mL / min, collection time 4 min, loading volume 300 mL, Sapindus mukorossi extract 0.2 g / L, and chromium sulfate 10 mg / L, Cr... 3+ The recovery rate can reach 71.5%, and the enrichment ratio is 3.9. The foaming agent used in this invention is widely available, easily degradable, and environmentally friendly, and is suitable for low concentrations of Cr. 3+ Separate harvesting.

Methods, systems, and apparatus for disrupting PFAS comprising oxidatively pre-treating an aqueous foam fractionation solution comprising PFAS to form a pre-treated solution, and disrupting PFAS by mixing the aqueous foam fractionation solution with a persulfate and an acid or base to raise or lower pH and oxidize the aqueous foam fractionation solution, and then UV photolysis of the pre-treated solution. For example, UV light of 222 nm, 254 nm and / or 185 nm is directed onto the pretreated aqueous foam fractionation solution. Oxidizing the foam fraction may include placing the aqueous foam fractionation solution at elevated temperature and pressure for a time sufficient for thermal oxidation or ozonation of the aqueous foam fractionation solution.

A foam fractionation method and a foam fractionation system for treating water contaminated, in recirculation loops of opposite flow directions connecting compartments of reactors operating simultaneously as air and water are circulated, producing target molecules-charged foam through water columns in each compartments, separating the produced foam as the air continues in the air recirculation loop and water continues in the water recirculation loop while target molecules-concentrate and treated water are separately evacuated from the water recirculation loop.

Certain aspects of the present disclosure are related to systems and methods related to the removal of PFAS molecules. In one aspect, systems comprising a membrane separator and a foam fractionation separator are generally described. In some embodiments, the membrane separator and the foam fractionation separator are fluidically connected such that some or all of a feed comprising PFAS molecules, a surfactant, and a liquid and / or a foam fractionation separator input comprising PFAS molecules and a liquid can be processed by the membrane separator and / or the foam fractionation separator. In some embodiments, at least a portion of the PFAS molecules are removed from the feed and / or the foam fractionation separator input. In some embodiments, the surfactant is present such that some or all of the PFAS molecules are associated with micelles, which may facilitate the removal of the PFAS molecules from the feed and / or the foam fractionation separator input. In some embodiments, the membrane separator rejects PFAS molecules (e.g., associated with micelles) to a greater extent than certain dissolved ions.

A method of concentrating a fluoroalkyl compound includes bubbling a gas into an aqueous solution including the fluoroalkyl compound and having a pH of 0 to 4.5 to form a foam that includes the fluoroalkyl compound. The method also includes removing the foam from the aqueous solution to form a concentrate including the fluoroalkyl compound and to form a clarified aqueous solution.

Certain aspects of the present disclosure are related to systems and methods related to the removal of PFAS molecules. In one aspect, systems comprising a foam fractionation system are generally described. In some embodiments, the foam fractionation system comprises a vessel and / or a bubbler. The vessel, in accordance with certain embodiments, comprises an elongated portion and a body portion comprising a main body portion and a taper portion. The bubbler is configured to receive a gas input and inject bubbles into an interior volume of the vessel. An input liquid solution comprising one or more per- and / or polyfluoroalkyl substance (PFAS) molecules and a surfactant enters the foam fractionation system. The input liquid solution is treated by the foam fractionation system such that some or all of the PFAS molecules are separated into a foamate output. In some embodiments, a liquid output exiting the foam fractionation system comprises a relatively low amount, if any, of the PFAS molecules. In some embodiments, the liquid output and / or the foamate output is recycled (e.g., after one or more passes through one or more foam fractionation system).

To provide high C / N ratio effluent suitable for biological denitrification by circulating and reusing aquaculture wastewater.SOLUTION: A pre-treatment facility 1, functioning as a wastewater treatment system for treating aquaculture wastewater W2 containing seawater discharged from an aquaculture tank 2, includes a filtration separation part 4 that filters and separates the aquaculture wastewater W2 into solids and filtered water W3, an accelerated oxidation part 5 having ozone gas supply means 51 capable of gas-liquid mixing ozone gas into the filtered water W3 and ultraviolet irradiation means 52 capable of irradiating the filtered water gas-liquid mixed with ozone gas with ultraviolet light and a foam separation part 6 that separates foam from the filtered water introduced with bubbles.SELECTED DRAWING: Figure 1

A system and method for removing at least one per- and poly-fluoroalkyl substance (PFAS) from water includes a foam fractionation system that creates foam in an incoming water flow of the water to create a foam containing liquid. The foam containing liquid is injected into a top side of a downflow cone, such as a Speece cone. The foam containing liquid is flowed through the downflow cone at a predetermined velocity to create and immobilize a bubble swarm within the downflow cone. The treated liquid is removed from a bottom side of the downflow cone, where the treated liquid has a lower concentration of the PFAS as compared to the concentration in the incoming water flow. Foam is removed from the downflow cone, where the foam includes the PFAS removed from the water.

A self-regulating protein skimmer (10) for an aquarium, comprising a vertical lower housing (11) comprising a reaction chamber (12) for foam separation of an air / organics-containing water mixture into organics-containing foam and relatively organics-free water, a skimming pump (13) for pumping the air / organics-containing water mixture foam into the reaction chamber (12), and a skimming pump (13) for pumping the air / organics-containing water mixture foam into the reaction chamber (12). The utility model relates to a device (10) for pumping a relatively organic-free water mixture into a reaction chamber (12), an outlet (14) having an outlet area for discharging the relatively organic-free water from the reaction chamber (12), and an outlet regulator (16) for controlling the outlet area, to regulate the discharge of the relatively organics-free water from the reaction chamber (12). The protein skimmer (10) further comprises a vertical upper foam collection cup (17) mounted on the vertical lower housing (11), the foam collection cup (17) having a vertical central foam collection neck (18) in fluid communication with the reaction chamber (12), and a foam collection periphery (19) surrounding the periphery of the foam collection neck (18), the foam collecting neck (18) has a foam collecting neck inner surface (18A), a foam collecting neck uppermost edge (18B) and a foam collecting neck outer surface (18C), and the organic-containing foam column has a highly aerated foam phase and a main aqueous phase below the foam phase towards the foam collecting neck uppermost edge (18B), the foam collection periphery (19) is filled with organic-containing waste overflowing from the foam collection neck (18). The protein skimmer (10) further comprises an electrical conductivity (EC) sensor (27A, 27B) disposed in the foam collection neck (18) at a location towards the uppermost edge (18B) of the foam collection neck for sensing foam humidity in the foam phase of the organic-containing foam column, and a user-set controller (23) for controlling the sensor (27A, 27B) to control the sensor (27A, 27B). And a control means for controlling the flow rate of fluid through the protein skimmer (10) as a function of the foam humidity readings of the EC sensor.

A foam management system (1000), apparatus (300), and method are disclosed for a foamed blood product, the apparatus comprising an antifoaming device (400) for receiving a pressurized foam (60) from a pressurized foamed blood product, said antifoaming device allowing a gas (68) to be separated from said foam (60), wherein said antifoaming device converts said pressurized foam (60) into said blood product, allowing the blood product to be recovered from said foam (60), substantially without the foam.

A method for enriching saponins in a hesperetin extract can include: purifying a crude hesperetin extract by flocculation, centrifugation, foam fractionation, solvent extraction, or any combination thereof to produce a hesperetin processed extract comprising saponins; and filtering the hesperetin processed extract through one or more membranes to produce a hesperetin enriched extract. The one or more membranes include a first membrane having a pore size sufficient to allow saponin retention. The dry basis-based saponin concentration in the saponin-enriched retentate may be greater than the dry basis-based saponin concentration in the hesperetin processed extract.

Certain aspects of the present disclosure are related to systems and methods related to the removal of PFAS molecules. In one aspect, systems comprising a membrane separator and a foam fractionation separator are generally described. In some embodiments, the membrane separator and the foam fractionation separator are fluidically connected such that some or all of a feed comprising PFAS molecules, a surfactant, and a liquid and / or a foam fractionation separator input comprising PFAS molecules and a liquid can be processed by the membrane separator and / or the foam fractionation separator. In some embodiments, at least a portion of the PFAS molecules are removed from the feed and / or the foam fractionation separator input. In some embodiments, the surfactant is present such that some or all of the PFAS molecules are associated with micelles, which may facilitate the removal of the PFAS molecules from the feed and / or the foam fractionation separator input. In some embodiments, the membrane separator rejects PFAS molecules (e.g., associated with micelles) to a greater extent than certain dissolved ions.

Certain aspects of the present disclosure relate to systems and methods related to removal of PFAS molecules. In one aspect, a system including a membrane separator and a foam fractionating separator is generally described. In some embodiments, the membrane separator and the foam fractionating separator are fluidly connected such that a portion or all of a feed comprising PFAS molecules, surfactant, and liquid and / or a portion or all of a foam fractionating separator input comprising PFAS molecules and liquid may be treated by the membrane separator and / or the foam fractionating separator. In some embodiments, at least a portion of the PFAS molecules are removed from the feed and / or foam fractionating separator input. In some embodiments, the surfactant is present such that a portion or all of the PFAS molecules are associated with micelles, which may facilitate removal of the PFAS molecules from the feed and / or foam fractionating separator inputs. In some embodiments, the membrane separator intercepts PFAS molecules (e.g., PFAS molecules associated with micelles) to a greater extent than certain dissolved ions.

Systems and methods for treating water containing TOC and PFAS are disclosed. An electrochemical cell may be used to concentrate the PFAS via foam fractionation. The electrochemical cell may destroy TOC and some PFAS compounds. A downstream mineralization process may destroy PFAS compounds in the foam fraction.

A method for reducing particles from biosolids, comprising a storage tank for holding biosolids and an inlet pipe. The inlet pipe delivers biosolids from the storage tank to a screener and then to a percent solids meter. The percent solids meter measures the solid content in the biosolids and sends a signal to an electronic solenoid valve to control water content of the biosolids introduced to the system. A first venturi hydrodynamic cavitation to create vacuum bubbles in the biosolids. A mechanical hydrodynamic cavitation device operably connected to first venturi hydrodynamic cavitation, wherein the mechanical hydrodynamic cavitation device creates vacuum bubbles in the biosolids.

A method of increasing the removal of short chain PFAS from a treated wastewater is described, The method comprising the steps of: forming or obtaining the treated wastewater, treated for the removal of PFAS; adding an effective amount of a cationic polymer to the treated wastewater; subjecting the treated wastewater and cationic polymer to foam fractionation to form a foam and a further treated wastewater; and optionally removing the foam from the further treated wastewater.

The invention discloses a dynamic defoaming device for a stirring system, which belongs to the technical field of wet-process phosphoric acid production equipment and comprises a reaction tank body, a stirring shaft, stirring blades, a three-phase feeder, a liquid overflow port, an overflow depth regulator, an interface foam separator, a foam secondary separator and a foam overflow port, wherein the overflow depth regulator is arranged on the inner side wall of the reaction tank body, the upper end of the overflow depth regulator is communicated with the liquid overflow port, the lower end of the overflow depth regulator is adjustably arranged in the middle of the reaction tank body, and the interface foam separator is arranged in the reaction tank body and matched with a material liquid level. The foam secondary separator is arranged at the upper part in the reaction tank body, and a set interval is kept between the foam secondary separator and the interface foam separator to form a static foam space; according to the invention, efficient and thorough removal of foam and accurate separation of liquid and solid materials are realized, and the purity and production efficiency of phosphoric acid products and the operation stability of equipment are effectively improved.

The utility model relates to the technical field of aquaculture, in particular to a foam separator for aquaculture, which comprises a separator body, and a foam generator is mounted at the bottom in the separator body. A group of water inlet pipes are mounted on the side wall of the separator body; the side wall of the separator body is communicated with a water outlet pipe at the lower ends of the water inlet pipes; the water inlet pipe is inclined towards the foam generator; a foam separation area is arranged above the separator body, a foam collection module is arranged at the position, corresponding to the foam separation area, of the outer wall of the separator body, and the foam collection module is communicated with the foam recovery area; the cleaning effect on the sewage water body is improved.