48 results about "Foam separation" patented technology

The invention discloses an ultra-aeration air flotation system and an implementation method thereof, and belongs to the technical field of wet-process phosphoric acid production, and the ultra-aeration air flotation system comprises a reaction tank, an inclined guide plate arranged on the inner wall of the reaction tank, a dish-shaped tank which is arranged at the bottom of the reaction tank and is annularly arranged around the center of the reaction tank, and a central island which is formed by protruding the inner ring part of the dish-shaped tank at the bottom of the reaction tank, the aeration mechanism is arranged on the central island and is communicated with the outside through a pipeline; the transmission mechanism is arranged above the reaction tank; the central transmission rod is connected with the output end of the transmission mechanism and is arranged along the axis of the reaction tank; the dynamic settler is arranged at the upper part in the reaction tank and is connected with the central transmission rod; and the overflow port is matched with the dynamic settler. The inclined guide plate, the dish-shaped aeration structure and the dynamic settler are integrally arranged in the reaction tank, so that the super-aeration uniformity, the foam separation capacity, the phosphoric acid purification and the liquid vortex intensity in the wet-process phosphoric acid production process are remarkably enhanced, and the reaction efficiency and the product quality are improved.

The present invention discloses a super-aeration flotation system and its implementation method, belonging to the technical field of wet-process phosphoric acid production. The system comprises a reaction tank, an inclined guide plate arranged on the inner wall of the reaction tank, a dished trough arranged at the bottom of the reaction tank and arranged in a ring shape around its center, a central island formed by a protrusion of the inner ring portion of the dished trough at the bottom of the reaction tank, an aeration mechanism arranged on the central island and connected to the outside through a pipeline, a transmission mechanism installed above the reaction tank, a central transmission rod arranged along the axis of the reaction tank and connected to the output end of the transmission mechanism, a dynamic settler arranged at an upper position in the reaction tank and connected to the central transmission rod, and an overflow port matched with the dynamic settler. By integrating the inclined guide plate, the dished aeration structure and the dynamic settler in the reaction tank, the present invention significantly enhances the super-aeration uniformity, foam separation ability, phosphoric acid purification and liquid vortex intensity in the wet-process phosphoric acid production process, thereby improving reaction efficiency and product quality.

The invention relates to the technical field of micro-fine particle mineral flotation, in particular to a vibration grid device capable of improving the quality of flotation column concentrate. The device is applied to a foam separation section of a flotation column, two groups of grids are symmetrically arranged on two sides of an inner cavity of the flotation column, the grids are positioned on the upper section of an ore pulp liquid level of the flotation column, grid surfaces of the grids are vertically arranged, and the two grids are driven by a reciprocating driving structure and do synchronous reciprocating approaching and separating actions in the radial direction of the flotation column. The structure of the separation section of the flotation column is optimized, weak-hydrophobicity non-target fine mineral particles on the surfaces of bubbles are promoted to be desorbed from the surfaces of the bubbles, and the fine particle flotation concentrate grade of the flotation column is improved.

The utility model belongs to the technical field of air flotation foam separation. The air flotation foam collecting structure comprises a foam stacking pipe (1) and is characterized by comprising a regulating valve (2), the regulating valve (2) is provided with an end a and an end b; the a end is hermetically connected with the bubble piling pipe (1), and the b end is communicated with the atmosphere; a discharge path of foam or gas released by foam burst in the foam stacking pipe (1) passes through the regulating valve (2). A mineral powder flotation device, a culture device or a water purifier is provided with an air flotation foam separation device, and the air flotation foam collection structure is characterized in that the air flotation foam separation device comprises the air flotation foam collection structure. The utility model provides a plurality of new ideas, the cost is low, the liquid removal speed is higher, the height of the foam column can be controlled without controlling the air flow of the air pump, the applicability is better, a plurality of beneficial effects are realized through a simple structure, and the design is simple and ingenious.

A method, system, and apparatus for PFAS destruction, comprising: oxidatively pre-treating an aqueous foam separation solution containing PFAS by mixing the aqueous foam separation solution with a persulfate and an acid or base to raise or lower the pH, and then oxidizing the aqueous foam separation solution to form a pre-treatment solution; and then subjecting the pre-treatment solution to UV photodegradation, for example, by inducing UV light of 222 nm, 254 nm, and / or 185 nm into the pre-treated aqueous foam separation solution. The oxidation of the aqueous foam separation solution may include exposing the aqueous foam separation solution to elevated temperature and elevated pressure for a period of time sufficient for thermal oxidation, or subjecting the aqueous foam separation solution to ozono-oxidation.

Adjustable crystalline graphite column flotation special foam separation device and foam separation method. The present invention comprises: a hollow column, a hollow shaft sleeve on the hollow column; a gear mounted on the hollow column; a speed regulating motor driving a transmission gear to rotate via a pulley, the transmission gear meshing with the gear; two foam scraping blades are plate-like structures with a transverse axis having a certain curvature and deflection angle, the blade section line corresponding to each radius has a different angle with the flotation column axis, the blade installation end edge and the tail end edge of the foam scraping blade have a certain inclination angle, and the foam scraping blade is mounted on the hollow shaft along the tangent direction; the ore separator is mounted on the lower part of the hollow column. The present invention can compensate for the disadvantage of poor crystalline graphite foam flow, achieve timely recovery of concentrate foam by applying external force, and improve the crystalline graphite flotation column separation recovery rate and equipment operating stability.

The present invention discloses a wall panel unit and a wall surface system, which include a decorative panel, a rear plate body that is buckled with the decorative panel, and foamed foam filled in a cavity between the rear plate body and the decorative panel; wherein: a first barrier member extending into the cavity is formed on the inner side of the side wall of the rear plate body; a second barrier member extending into the cavity is provided on the rear plate surface of the decorative panel; the first barrier member is used to limit the separation of the rear plate body from the foamed foam; the second barrier member is used to limit the separation of the rear plate body from the foamed foam.

The present invention discloses a high-gravity continuous foam separation device and method, belonging to the field of chemical separation technology. The device includes n high-gravity rotating packed beds and n+1 foam columns. When n=2, it includes first and second high-gravity rotating packed beds, and first, second, and third foam columns. The gas inlet of the first high-gravity rotating packed bed and the gas inlet of the first foam column are simultaneously connected to a gas delivery pipeline, and the foam outlet of the first foam column is connected to the liquid outlet of the first high-gravity rotating packed bed. The gas inlet of the second foam column is connected to the gas outlet of the first rotating packed bed, and the foam outlet of the second foam column is connected to the gas inlet of the second high-gravity rotating packed bed. The gas inlet of the third foam column is connected to the gas outlet of the second high-gravity rotating packed bed. The liquid inlet of the first rotating packed bed is simultaneously connected to the liquid outlet of the second rotating packed bed and a liquid delivery pipeline. The present invention achieves efficient separation of target substances and is suitable for continuous operation processes.

The invention discloses a periodical vortex disturbance device for improving flotation selectivity, and relates to the technical field of micro-fine particle mineral flotation, the periodical vortex disturbance device comprises a jet generator arranged on a flotation column foam separation section, the jet generator comprises a pipe body with a closed end and an open end, the open end extends into the flotation column foam separation section in a sealed mode, and the closed end is connected with the pipe body. The pipe body is arranged in the flotation column foam separation section, so that the pipe body is communicated with an inner cavity of the flotation column foam separation section, the pipe body has an expansion state and a contraction state which can be mutually switched, and when the pipe body is switched from the expansion state to the contraction state, ore pulp in the pipe body enters the flotation column foam separation section in a jet flow state and forms a jet flow field in the flotation column foam separation section. The jet flow field can apply periodic vortex disturbance to a combination of rising fine non-target minerals and bubbles, and the intensity of the periodic jet flow field can be adjusted according to the properties of different hydrophobic fine mineral particles, so that adhesion between the non-target minerals and the bubbles is destroyed, separation of the non-target minerals and the bubbles is promoted, and the separation efficiency of the non-target minerals and the bubbles is improved. Finally, the purpose of improving the flotation process selectivity is achieved.

The invention discloses a flotation concentrate foam flowing speed detection device and method.The flotation concentrate foam flowing speed detection device comprises a tank body, an air inflation stirring device, a material pushing device, a foam scraping device, an ultrasonic detection device and a receiving tank, the air inflation stirring device, the material pushing device and the foam scraping device are sequentially arranged in the flotation flowing direction, the pushing end of the pushing device moves annularly in the flotation flowing direction, so that foam is broken when the pushing end is located on the lower portion, and the pushing end is separated from the foam when the pushing end is located on the upper portion; the ultrasonic detection device is arranged between the pushing device and the foam scraping device so as to detect the foam flowing speed; the receiving tank is arranged at the discharging end of the tank body and is used for receiving foam scraped by the foam scraping device; the material pushing device and the ultrasonic detection device are electrically connected with the controller. The foam flow velocity is measured through the ultrasonic detection device, and the position and the working state of the pushing end of the pushing device are accurately adjusted through the controller according to the flow velocity value, so that the foam is more uniform, and the detection precision is improved.

The invention provides a device for coupling foam separation in a fermentation tank and application of the device to production and separation of recombinant protein, and belongs to the technical field of bioengineering and enzyme engineering. According to the device for coupling foam separation in the fermentation tank, the micron-sized aeration disc is arranged, seed liquid is inoculated into the device for semi-continuous fed-batch fermentation, part of fermentation liquid is taken out every 96 h, a fresh culture medium is supplemented, the influence of metabolite accumulation on the fermentation progress in the fermentation process is effectively solved, product inhibition is relieved, and the production efficiency is improved. The processes of sterilization, cleaning and the like are reduced; after fermentation is finished, a micron-sized aeration disc is used for directly carrying out foam separation on fermentation liquid in the fermentation tank, and efficient separation and concentration of the target recombinant protein are achieved; the device has the advantages of being simple in structure, easy, convenient and rapid to operate, low in time and material cost in the production process, capable of effectively improving the production efficiency and the like, and has good practicability.

The three-section type flotation machine comprises a flotation tank, a concentrate tank and a tailing discharge bin, and the flotation tank comprises a high turbulence cavity located on the lower portion of the flotation tank, a middle turbulence cavity located in the middle of the flotation tank and a low turbulence foam separation area located on the upper portion of the flotation tank. The high-turbulence chamber is used for recovering minerals with superfine particle fractions in ore pulp, the middle-turbulence chamber is used for recovering minerals with conventional fine particle fractions in the ore pulp, and the low-turbulence foam separation area is used for separating and recovering mineralized foams. According to the three-section type flotation machine, multi-turbulence separation and static separation are mainly combined, multi-turbulence separation is divided into two parts, namely, high turbulence and medium turbulence are sequentially arranged from the lower portion of a flotation tank and are used for recycling micro-fine particles and particles of a conventional flotation fraction respectively, and static separation is achieved. The relative static environment provided by the upper low-turbulence foam separation area can achieve efficient separation of ore pulp and foam, so that the flotation effect can be effectively improved, and the flotation device can be suitable for efficient separation of whole-fraction particles. The three-section type flotation machine is wide in flotation fraction range, high in speed, small in occupied area, high in energy utilization rate and wide in application prospect.

The invention relates to the field of sewage treatment, and discloses a process method for treating refined sugar ion exchange decoloration regeneration waste liquid. The method comprises the steps of electric flocculation foam separation pretreatment and salt-tolerant activated sludge biological treatment, and the invention also discloses a system for realizing the method, and the system comprises a raw water tank, an electric coagulation tank, a flocculation tank, an air floatation tank, a salt-tolerant microorganism biochemical treatment tank and a precipitation tank. According to the method disclosed by the invention, the high-COD, high-salt and high-chroma waste liquid generated by a sugar refining process is effectively treated, so that higher emission standards are achieved.

The utility model relates to the technical field of liquid filling, in particular to a filling needle head for sucking back foam on a liquid filling machine, which comprises a needle head body, the needle head body is arranged at the bottom of a plurality of filling branch heads, the filling branch heads are communicated with a filling tank body through hoses, a filling bottle is arranged below the needle head body, and the filling bottle is connected with the filling tank body through a hose. A detachable elastic rubber sleeve is arranged on the outer side of the needle head body in a sleeving mode, a groove is formed in the inner side wall of the elastic rubber sleeve, and the top of the groove is communicated with a negative pressure generating device, a foam recycling device used for recycling foam and an oil recycling device used for recycling edible oil through a defoaming device. According to the filling needle head for sucking back the foam on the liquid filling machine, the foam in a filling bottle can be quickly sucked back, extrusion defoaming is carried out, and oil foam separation and recovery are achieved.

The application discloses a kind of sustainable system processes for removing perfluoro or polyfluoroalkyl substance, belongs to water treatment field.The process is concentrated to foam phase by foam separation in water phase PFAS, combined with nanofiltration membrane system concentration PFAS containing solution, then carries out defluorination degradation by using hydrated electron in electrocatalytic unit;Nanofiltration water is treated by ion exchange resin, saturated resin is backwashed by mixed solution, and backwash waste liquid is regenerated and recycled by another electrocatalytic unit;Finally, harmless calcium fluoride is generated by flocculation and precipitation, and fluoride ion is removed.The process is suitable for various PFAS, can efficiently remove long-chain and short-chain PFAS, total removal rate is high, can cope with complex water quality, is suitable for drinking water, natural water body and industrial wastewater etc.Situations, and no secondary pollution, regeneration liquid can be recycled, realizes sustainable degradation.

A foam separation treatment method is provided that separates organofluorine compounds from treated water by introducing gas into the treated water containing organofluorine compounds and recovering the foam generated. A polymeric surfactant is introduced into the treated water. Therefore, a foam separation treatment method capable of efficiently separating organofluorine compounds from treated water containing organofluorine compounds is provided.

This foam separation treatment method is for separating an organic fluorine-based compound from water to be treated containing the organic fluorine-based compound, by recovering foam generated by feeding a gas into the water to be treated, and involves introducing a polymer surfactant into the water to be treated. Accordingly, provided is a foam separation treatment method capable of efficiently separating an organic fluorine-based compound from water to be treated containing the organic fluorine-based compound.

The invention relates to the field of sewage treatment, and discloses a process method for treating refined sugar ion exchange decoloration regeneration waste liquid. The method comprises the steps of electric flocculation foam separation pretreatment and salt-tolerant activated sludge biological treatment, and the invention also discloses a system for realizing the method, and the system comprises a raw water tank, an electric coagulation tank, a flocculation tank, an air floatation tank, a salt-tolerant microorganism biochemical treatment tank and a precipitation tank. According to the method disclosed by the invention, the high-COD, high-salt and high-chroma waste liquid generated by a sugar refining process is effectively treated, so that higher emission standards are achieved.

The utility model discloses a wet and dry dual-purpose dust collector, and relates to the technical field of dust collectors. The dust collector specifically comprises a collecting barrel, a top cover assembly, a floating column assembly, a motor assembly, an air outlet valve assembly, an HEPA assembly and a water insulation cup, the top cover assembly and the air outlet valve assembly are installed on the motor assembly, the motor assembly is installed in the collecting barrel, the HEPA assembly comprises an HEPA frame and an HEPA filter, the HEPA frame is installed at the bottom of the motor assembly, and the HEPA filter is installed on the water insulation cup. The floating column assembly is slidably mounted in the HEPA frame, the outside of the HEPA frame is selectively connected with the HEPA filter and the water insulation cup, when the dust collector sucks dust, the HEPA frame is detachably connected with the HEPA filter, and when the dust collector sucks foam water, the HEPA frame is detachably connected with the water insulation cup. The wet and dry dual-purpose dust collector can achieve wet and dry dual purposes, can achieve foam separation, can effectively prevent foam from overflowing out of the dust collector through the air channel, and improves user experience.

The gas-liquid separation device comprises a cylinder and a degassing separation assembly, a liquid inlet is formed in one side of the cylinder, a gas outlet is formed in the top of the cylinder, the cylinder comprises an injection separation area, a foam separation crushing area, a standing separation area and a gasification space, the injection separation area is provided with an injection separation assembly, and the foam separation crushing area is provided with a gas outlet. The foam separating and crushing area is provided with a foam separating assembly, the foam separating and crushing area is communicated with the injection separating area, and the standing separating area is communicated with the injection separating area; the gasification space is communicated with the injection separation area, the foam separation crushing area and the standing separation area, the standing separation area is connected with the degassing separation assembly, the gasification space is communicated with the gas outlet, and the injection separation area is communicated with the liquid inlet. According to the gas-liquid separation device, the gas-liquid separation efficiency can be improved, and the occupied area of equipment is reduced.

The application discloses a kind of supergravity high-efficiency foaming foam separation device and method, belong to chemical separation equipment field.The device includes supergravity rotating packing bed, foam rectifying tower and foam stripping tower;Foam rectifying tower is connected with the top of supergravity rotating packing bed;Foam stripping tower is connected with the bottom of supergravity rotating packing bed;The gas inlet of foam stripping tower bottom and supergravity rotating packing bed is connected with gas conveying pipeline, and gas conveying pipeline is composed of fan, gas buffer tank, gas valve, gas flow meter connected in sequence;Supergravity rotating packing bed connects liquid conveying pipeline, and liquid conveying pipeline includes raw material liquid tank, pump, liquid valve and liquid flow meter connected in sequence.The application solves the problems of traditional foam separation equipment, such as large and uneven bubbling, slow mass transfer efficiency and low separation efficiency, increases the effective area of gas-liquid contact by using supergravity technology, greatly improves the separation effect, and realizes the efficient separation of target substance.

The invention provides a method for separating flavonoid compounds in perilla leaves, and relates to the technical field of foam separation. According to the separation method of the flavonoid compounds in the perilla leaves, the flavonoid compounds in the perilla leaf water extract are separated by adopting a foam separation method; a separation auxiliary agent for foam separation is amino silane modified nanofiber. According to the separation method, amino silane modified nanofibers are used as a separation auxiliary agent, and the separation auxiliary agent can specifically adsorb the flavonoid compounds, has good foamability and can achieve separation of the flavonoid compounds in a foam separation mode. The separation method is simple to operate, low in cost, green and environment-friendly, and the flavonoid compounds in the perilla leaves can be efficiently separated.

This invention discloses an immersion-type foam separation, collection, and elimination device. A foam collection component floats on the surface of a thickening tank, separating and collecting foam from the tank surface to a foam breaking component. The foam breaking component breaks the collected foam into small pieces and sends them into the foam separation and elimination component. A water-retaining ring in the foam separation and elimination component fluctuates according to the water level in the suction ring, reducing the amount of water entering the component. Simultaneously, a drainage component ensures that the water level in the suction ring is always lower than the water level in the thickening tank. Water carrying foam flows into the foam separation and elimination component, with most of the liquid leaking into the suction ring from the first hole of the foam collecting hopper. The foam is separated by the second hole of the foam collecting hopper and enters a defoaming tank. In the defoaming tank, the foam is defoamed and reduced to slurry, flowing to the outlet of the defoaming tank, where it is then sucked away by the drainage component and discharged back into the thickening tank along with the water. This invention has the advantages of low cost and applicability to large-size thickeners for large-scale elimination of three-phase foam.

A process for producing beta-glucanase by coupling foam separation and fermentation relates to the technical field of foam separation and comprises the following steps: 1) pretreatment; (2) assembling an instrument; 3) system debugging; 4) performing high-pressure steam sterilization; 5) precise inoculation; (6) fermenting and supplementing materials; and 7) extraction and detection. According to the method disclosed by the invention, efficient production of beta-glucanase taking pichia pastoris as a fermentation main body is successfully realized, and the foam separation technology is introduced, so that the production cost is remarkably reduced, the operation process is simplified, and the yield and the enzyme activity of the product are greatly improved. The method has the remarkable advantages of being low in cost, easy to operate, high in yield and high in enzyme activity, and a new thought is provided for industrial production of beta-glucanase.

A liquid ejection device, a cleaning method, and a cleaning program are provided that are capable of sufficiently cleaning a wiper member with a cleaning member even when high-viscosity ink is used. [Solution] The liquid ejection device comprises an ejection head having a nozzle plate with nozzle holes for ejecting liquid, a wiper member for wiping the nozzle surface which is one side of the nozzle plate, a wiper holder for supporting the wiper member, a cleaning member for removing liquid adhering to the wiper member by contacting the wiper member, foam impregnated with cleaning liquid provided on the cleaning member, and a switching mechanism for switching between a contact position where the wiper member contacts the foam and a separation position where the wiper member is separated from the foam.

The invention relates to a method for preparing amino acid chelate based on enzymolysis of corn starch waste liquid, which comprises the following steps: adding a flocculating agent into the corn starch waste liquid, carrying out flocculation precipitation reaction, centrifuging to remove suspended matters, classifying and recovering supernate and protein precipitate, and carrying out foam separation coupling ultrafiltration treatment on the supernate to obtain water-soluble protein crude extract; crushing the protein precipitate for later use; mixing the protein precipitate with the water-soluble protein crude extract to obtain a mixture, adding a compound enzyme for enzymolysis treatment, and decoloring, filtering and concentrating the obtained enzymatic hydrolysate to obtain an amino acid concentrated solution; and carrying out chelation reaction on the amino acid concentrated solution and metal salt. According to the method disclosed by the invention, the chelation rate of the amino acid metal chelate can be remarkably improved through the cooperation of the flocculation precipitation reaction of the corn starch waste liquid, the foam separation coupling ultrafiltration treatment after the fermentation of the supernatant through the enzyme preparation and the enzymolysis treatment of the protein precipitation and the water-soluble protein crude extract; a relatively good chelating effect can be achieved in a relatively short time, and the reaction time is shortened.

The utility model relates to the technical field of membrane separation devices, in particular to a membrane separation device with a foam separation function. The membrane separation device with the foam separation function aims at solving the technical problems that in the prior art, separation foam accumulation needs to be scooped out manually, operation is inconvenient, and materials are prone to being polluted. According to the technical scheme, the membrane separation device with the foam separation function comprises a bottom frame, the device further comprises a vertical supporting frame, a centrifugal storage barrel body, a material barrel, a centrifugal cover plate, a window, a motor, a centrifugal separation barrel body, a vertical threaded column, an adjusting bolt, a supporting piece, a conical cover and a spring. Foam accumulated on the upper layer in the material barrel does not need to be scooped out manually and is pumped into the centrifugal storage barrel body in a negative pressure mode, the foam is rapidly broken through the centrifugal effect of the centrifugal storage device, finally, only separated liquid is left, the effect of eliminating the foam is achieved, substances in the foam can be extracted, pollution is not prone to occurring, and the service life of the material barrel is prolonged. And the operation is convenient.

To provide a foam separation apparatus and a foam separation method that are capable of concentrating a separation target substance and improving the removal rate of a substance to be removed from the separation target substance.SOLUTION: A foam separation apparatus 1 includes: a separation column 2; a treated liquid supply unit 3 that supplies a treated liquid containing a separation target substance into the separation column 2; a foam generation unit 4 that generates foam BL from the treated liquid in the separation column 2; and a hydrophilic solution supply unit 5 that supplies a hydrophilic solution into the separation column 2 for contact with the foam. The separation column 2 includes a column section 21 extending upward, the column section 21 guiding the foam BL upward. The hydrophilic solution supply unit 5 supplies the hydrophilic solution into the column section 21 and allows the hydrophilic solution to flow downward while contacting the foam BL rising in the column section 21.SELECTED DRAWING: Figure 1

The present invention discloses a method for ultra-stable foam separation and flotation of lepidolite, belonging to the field of mineral processing technology. The method first utilizes an amine cationic collector, an anionic collector, and a polyoxyethylene ether defoamer to prepare a high-efficiency collector, Super Lithium Cheng-31. The reselected lepidolite ore is then deslimed, and the +0.030 mm particle size product is subjected to a first stage of roughing to obtain a roughing concentrate and roughing tailings. The roughing concentrate is subjected to two stages of fine separation to obtain a final concentrate. The roughing tailings are subjected to three stages of scavenging to obtain scavenged ore and tailings. The middlings are sequentially returned, and an inhibitor and a collector, Super Lithium Cheng-31, are added to the roughing. Only the collector, Super Lithium Cheng-31, is added to the scavenging, and only the inhibitor is added to the fine separation. The lithium ion oxide (Li2O) grade in the lepidolite concentrate obtained by the method is 3.0% to 3.5%, the recovery rate of Li2O is greater than 90%, and the grade of Li2O in the tailings is less than 0.05%. The grade and recovery rate of Li2O in the lepidolite concentrate are significantly improved, and the foam has low viscosity, good fluidity, and is relatively easy to eliminate, thereby having good application prospects.

The utility model discloses a foam separation device for sewage treatment, relates to the technical field of sewage treatment equipment, and aims to realize the purpose of foam separation by arranging a spray head in the conventional foam separation device for sewage treatment, enabling the liquid level on the inner side to be higher than the liquid level on the outer side to form a liquid level difference and discharging foams through a notch by virtue of a rotating driving plate. However, the foams are dispersed on the inner wall of the sewage pail in the process of being driven, only the foams near the notch can be transferred through the notch, and the rest of the foams can be adsorbed on the inner wall of the sewage pail; according to the device, the foam scraping plate with the foam absorption holes is arranged, in the rotating process of the foam scraping plate, foam on the surface of sewage and the inner wall of the sewage barrel is collected at the positions of the foam absorption holes, then the foam is absorbed through the foam absorption holes, the purpose of foam separation is achieved, and the foam separation effect of the device is improved.