5666results about "Liquid separation" patented technology

The invention relates to a thickener based on an intelligent control mixed feeding apparatus. The thickener comprises a thickening tank and a feeding assembly for adding a flocculant into the thickening tank. A rotating shaft is arranged in the thickening tank. The surface of the rotating shaft is provided with grease scrapers attached to the liquid surface of a slurry, and the grease scrapers can rotate along with the rotating shaft to scrape off grease on the liquid surface. In the present invention, stirring paddles are driven to rotate by means of the rotating shaft, so as to stir the slurry, so as to generate bubbles in the slurry, allowing grease particles to be attached to the bubbles and rise to the liquid surface. A sliding piece is driven to rotate by means of the rotating shaft, so that the scrapers are driven to rotate, and together with an inclined surface, the grease rising to the liquid surface is scraped off, so that the grease can enter a cavity along the inclined surface and a grease inlet to be collected, so that the function of removing grease is achieved, and the thickening effect is improved.

The invention belongs to the field of oil and gas field high-salinity wastewater treatment, and particularly relates to a shale gas high-salinity wastewater electrochemical catalysis coupling membrane separation low-carbon treatment method which comprises the treatment steps of pretreatment, electrocatalytic oxidation, membrane separation, salt recycling and product recovery, intelligent management and control, energy coupling and the like. The dissolved air flotation unit generates micro-nano bubbles through a venturi-rotational flow coupling device and cooperates with PAC / PAM to realize efficient flotation; softening agents are added into the multi-stage sedimentation tank by stages, closed-loop control is carried out, and soluble barium, boron, fluoride and hardness are removed; the electrochemical oxidation unit strengthens mass transfer through ultrasonic waves and degrades organic matters difficult to treat; the membrane treatment realizes up-to-standard discharge of wastewater through a hollow fiber membrane bioreactor-roll type ultrafiltration membrane-anti-pollution type reverse osmosis membrane integrated system; the magnetic control evaporation crystallizer utilizes the magnetic field gradient and the temperature gradient to cooperatively regulate and control the crystallization process, the membrane separation strong brine is subjected to quality separation treatment, and high-purity salt products are produced. The method provided by the invention can effectively realize up-to-standard discharge treatment of shale gas fracturing flowback wastewater and resource utilization of evaporative crystallization salt, is also suitable for treating shale gas recovery wastewater with similar water quality characteristics, and has good popularization and application prospects.

The invention relates to the technical field of sewage treatment, and discloses an efficient environment-friendly sewage treatment device and a using method thereof.The efficient environment-friendly sewage treatment device comprises a base, a motor is fixedly connected to the side wall of the base, and an output shaft of the motor is fixedly connected with a first gear. The liquid level of water is guaranteed to be lower than the center point of the supporting frame, then a power source of a motor is switched on, the motor drives a first gear ring to rotate through a first gear, the first gear ring drives a rolling pipe to roll along the inner wall of the supporting frame, and in the process, impurities floating on the liquid level make contact with the inner wall of the rolling pipe; and after the impurities with improved viscosity are in contact with the inner walls of the rolling pipe and the precipitation ring, the rotating rolling pipe and the precipitation ring intercept the floating impurities, so that the application of a filter screen is eliminated while the effective interception of the floating objects is realized, and the phenomenon that the filter screen is blocked after the equipment is used for a long time and the normal use of the equipment is influenced is avoided.

Some implementations relate to a downhole separation system configured to be positioned downhole in a well formed in a subsurface formation, wherein the downhole separation system is configured to receive a formation fluid from the subsurface formation and configured to separate the formation fluid into a first fluid primarily comprised of a production fluid and a second fluid primarily comprised of a nonproduction fluid, the downhole separation system including, at least a first coalescer to be positioned within a downhole tubular, wherein the first coalescer is configured to separate out at least a portion of debris and the production fluid from the second fluid.

The invention provides a super-hydrophobic / super-oleophylic degradable photo-thermal aerogel adsorption material and demulsification performance thereof, and belongs to the technical field of oil-water separation materials, and the super-hydrophobic / super-oleophylic degradable photo-thermal aerogel adsorption material is prepared by the following steps: (1) extracting cellulose from waste cartons and performing ultrasonic dispersion to prepare a cellulose suspension; (2) preparing a chitosan solution; (3) mixing the cellulose suspension and the chitosan solution to obtain a cellulose / chitosan composite solution, adding nano carbon black particles, glutaraldehyde and a methyltrimethoxysilane aqueous solution into the cellulose / chitosan composite solution, and stirring; (4) injecting the mixed solution into a mold, and performing directional freezing on a semiconductor refrigeration platform; and (5) performing freeze drying on the frozen sample, and then putting the frozen sample into a drying oven for cross-linking to obtain the aerogel. The aerogel is obtained by taking cellulose extracted from waste cartons and chitosan as organic frameworks, carrying out chemical crosslinking through glutaraldehyde, introducing nano carbon black particles as photo-thermal components and carrying out hydrophobic modification through methyltrimethoxysilane, and has an excellent pore structure, super-hydrophobicity-super-lipophilicity and excellent mechanical properties; the adsorbent has efficient adsorption capacity on high-viscosity crude oil; and the device can be repeatedly used and is biodegradable, so that the burden on the environment is reduced.

The invention provides a treatment method of ammonia-nitrogen-containing wastewater, and belongs to the technical field of wastewater treatment. The preparation process comprises the following steps: preparing the wastewater treatment agent; preparing an immobilized microbial compound; and treating the ammonia-nitrogen-containing wastewater. According to the immobilized microbial carrier prepared by the invention, a stable dual-network structure and proper pore channels are formed through the synergistic effect of the polyvinyl alcohol, the carboxymethyl chitosan and the polyurethane; secondary cross-linking significantly enhances the stability of the carrier, optimizes internal pore channels, and is beneficial to attachment and proliferation of microorganisms; after the corn straw biochar is modified by Ca / Al, the specific surface area and functional groups are increased, and the physicochemical adsorption of ammonia nitrogen is enhanced. The three are combined, and ammonia nitrogen in wastewater is efficiently removed through synergism of carrier adsorption and microbial metabolism.

The invention discloses a preparation method and application of a pH-responsive controllable oil-water separation material, polyurethane sponge is used as a substrate, polypyrrole is attached to the sponge substrate through an in-situ polymerization method, a pH-responsive polymer is introduced into the sponge substrate through a soaking method, and finally the pH-responsive controllable oil-water separation material is obtained. The controllability of the material in the oil-water separation process is reflected as follows: due to the introduction of the pH responsive polymer, the surface of the material has pH responsiveness, the surface of the material has different wettability by adjusting the pH value, different types of oil-water mixtures can be controllably separated in a targeted manner, and the adsorption and desorption of oil products can be realized. Due to the introduction of polypyrrole, the material has good photo-thermal conversion capacity, the viscosity of crude oil can be effectively reduced, and the absorption rate of the crude oil can be improved. The material with pH responsiveness has wide application prospects in the fields of oil-water separation, oil product adsorption and desorption and crude oil absorption.

The invention discloses a biological nitrogen and phosphorus removal MBR sewage treatment system and a treatment process thereof. The process comprises the following steps: 1) pretreatment; 2) treatment in an anaerobic tank; (3) treating in an anoxic tank; 4) treatment in an aerobic tank; 5) MBR membrane pool treatment; sewage enters the box body through the water inlet, the moving mechanism drives the aeration mechanism and the scum cleaning mechanism to move, the aeration mechanism performs aeration treatment on the sewage in the box body, and when the aeration mechanism blows gas into the sewage through the branch gas pipe, bubbles can be scattered by spiral blades, so that the contact area between the gas and liquid is further increased, and the aeration effect is enhanced; when the sewage is subjected to aeration treatment, the scum after aeration treatment rises, the scum cleaning mechanism scrapes the scum floating after aeration for multiple times, collects the scraped scum and sends the scum out of the box body, impurities suspended in the middle layer of the sewage are fished, and the sewage after scum cleaning enters the next treatment procedure through the water outlet.

The invention discloses a spunlace non-woven fabric energy-saving zero-discharge water treatment and cyclic utilization system and a method thereof, and particularly relates to the technical field of water treatment and cyclic utilization. The pretreatment mechanism comprises a filter box, a first filter plate, a second filter plate, a first return pipe, a second return pipe, a pressure valve and a backwashing nozzle, the inner wall of the top of the filter box is connected with the first filter plate, the bottom of the first filter plate is provided with the second filter plate, and the outer wall of one end of the bottom of the filter box is communicated with the first return pipe; a second backflow pipe is arranged on the side, away from the first backflow pipe, of the filter box. According to the device, the back washing effect is achieved through internal inflow water backflow when the second backflow pipe and the first backflow pipe are blocked, cleaning work is carried out under the limiting condition, the filtering process is prevented from being affected by blocking, cleaning work can be carried out under the non-stop condition, and cleaning work of the two sets of filter plates can be completed without a power mechanism.

The utility model discloses a dissolved air flotation scum scraping device, which belongs to the field of wastewater treatment equipment and comprises an air flotation tank and scum scraping equipment. The air floatation tank is provided with a collecting tank along the radial direction, and one side of the collecting tank is provided with a slope. The scum scraping equipment comprises a scraping arm and a scraping plate, the scraping arm is arranged in the radial direction of the air floatation tank and can circumferentially rotate towards the slope direction around the air floatation tank, the top of the scraping plate is hinged to the scraping arm, and a concave area is formed in the side, pushing scum, of the scraping plate. The scraping plate can rotate relative to the slope through the hinged structure of the scraping plate and the scraping arm, and large interference and resistance cannot be generated between the scraping plate and the slope. And after the scraper rotates, the scum in the concave area can be automatically poured into the collecting tank to be discharged. And the concave area of the scraper can enhance the collection and storage effects of the scum when the scraper revolves. After a large amount of scum is stored in the inner concave area, when the scraping plate is in contact with the slope, the reverse thrust of the scum on the scraping plate is reduced, the scum amount pushed in a single time is increased, and then the scum discharging efficiency is improved.

The utility model discloses a multifunctional industrial wastewater treatment device, and the utility model relates to the technical field of multifunctional industrial wastewater treatment devices. A second water inlet pipe is provided inside the centrifugal cylinder, a water outlet groove is provided at the bottom of the second water inlet pipe, a guide plate is fixedly connected to the inner wall of the centrifugal cylinder, a slag discharge groove is provided at the bottom of the centrifugal cylinder, and a plurality of oil outlet holes are provided above the centrifugal cylinder. The centrifugal force after the centrifugal cylinder rotates to full speed separates the wastewater with heavy weight from the residue and grease. Due to its own light weight, the grease is thrown into the inner cavity of the treatment cylinder through the oil outlet hole, and the heavy residue is deposited downward. When the set slag discharge cycle is reached, the slag discharge starts, and the scraper scrapes the grease adhered to the inner wall of the treatment cylinder and discharges it through the second slag discharge pipe. The sealing ring opens the slag discharge groove upward, so that the residue inside the centrifugal cylinder is discharged to the outside of the device through the slag discharge pipe, so as to avoid the grease adhering to the inner wall of the treatment cylinder and affecting the treatment efficiency of the wastewater.

The invention relates to the technical field of blood separation, in particular to a platelet concentration-based gravity separation system, which comprises a tension disturbance extraction module, a viscosity response positioning module, a sedimentation retarding judgment module, a platelet export judgment module and a concentration layer interface output module. According to the method, real-time extraction of tension change frequency and mutation amplitude is introduced, and a normalization processing mode of disturbance polymerization indexes is combined, so that a mechanical unstable area under tiny disturbance in the blood standing sedimentation process is effectively described, and the sensitive recognition capability on potential layered behavior changes is enhanced. Through continuous tracking of a viscosity behavior curve in a disturbance time period, an accurate time anchor point is provided for judgment of a subsequent liquid column motion state. On the basis of microscopic changes of the liquid column height and the rate, through combined judgment of the acceleration change trend and the attenuation amplitude, the settlement state is distinguished no longer depending on a macroscopic parameter threshold value, but is dynamically regulated and controlled through the change trend and a fluctuation sequence.

The invention discloses a low-cost and environment-friendly process for producing 1, 4-bis (4-fluorobenzoyl) benzene, and belongs to the technical field of Friedel-Craft reaction, fluorobenzene and paraphthaloyl chloride react to generate 1, 4-bis (4-fluorobenzoyl) benzene, after reaction quenching, filtering is performed to obtain a crude product 1, 4-bis (4-fluorobenzoyl) benzene and filtrate, and the 1, 4-bis (4-fluorobenzoyl) benzene is purified in a sublimation crystallization mode; standing and layering the filtrate in an inclined plate layering device, respectively treating an oil layer and a water layer, dehydrating a fluorobenzene layer in a dehydrating tower, and returning fluorobenzene; the water phase is firstly subjected to organic matter removal treatment, the obtained organic matter enters a fluorobenzene recovery device to be sleeved back, and the obtained water phase is a byproduct of crystallized aluminum chloride in an evaporative crystallization device. According to the process, the 1, 4-bis (4-fluorobenzoyl) benzene is produced in a sublimation crystallization mode instead of a solution crystallization mode, no waste solvent is generated, the waste solvent does not need to be recycled, the cost is low, organic matter removal and evaporative crystallization treatment is carried out on wastewater, organic matter recycling is carried out, crystalline aluminum chloride is produced as a byproduct, and wastewater and waste salt are not discharged.

The invention discloses a corrugated carton production wastewater treatment device, and particularly relates to the technical field of corrugated carton production, the corrugated carton production wastewater treatment device comprises a shell, supporting legs are fixedly connected to four corners of the lower end of the shell, a feeding pipe is fixedly connected to the right part of the upper end of the shell, and a filtering and adding assembly is arranged on the inner surface of the shell; and an oil removing assembly is arranged on the inner surface of the shell and located below the filtering and adding assembly. According to the corrugated carton production wastewater treatment device disclosed by the invention, by arranging the filtering and adding assembly and the oil removal assembly, wastewater can be uniformly and quantitatively shunted, the wastewater can be uniformly and sufficiently filtered, a filter screen is prevented from being blocked in the filtering process, large suspended solids in the wastewater are filtered, and the wastewater is prevented from being blocked. A coagulant and a coagulant aid can be quantitatively mixed and added into the wastewater in a partitioned manner in a rotating manner, so that the wastewater can be in full contact with the coagulant and the coagulant aid, the coagulation effect is better played, the wastewater treatment effect and efficiency are improved, and physicochemical pretreatment on the wastewater is realized.

The invention relates to the technical field of material science and engineering, and discloses a nanocellulose-based oil-water separation and adsorption composite material, which is prepared from the following raw materials in parts by mass: 35 to 45 parts of nanocellulose; 8 to 11 parts of bagasse cellulose; 10 to 15 parts of sodium lignin sulfonate; 4 to 8 parts of chitosan; 5-10 parts of oxidized starch; 5 to 8 parts of cellulose nanowhiskers; 2-5 parts of silicon dioxide nanoparticles; 0.5 to 1 part of calcium carbonate nanoparticles; 1-2 parts of a citric acid cross-linking agent; 1-2 parts of graphene oxide; 0.3 to 0.6 part of ethylene diamine tetraacetic acid; 2-5 parts of glycerol; 0.4 to 1 part of stearoyl chloride; 2-4 parts of nano iron oxide; the preparation method comprises the following steps: pretreating the raw materials, mixing the pretreated raw materials into slurry, carrying out crosslinking and ultrasonic dispersion, standing to obtain a basic mixture, injecting the basic mixture into a mold, carrying out freeze drying to form a photocatalytic layer, carrying out centrifugal dewatering, carrying out chelation reaction, spraying a composite solution, and carrying out vacuum drying to obtain the photocatalytic material. The obtained composite material has the advantages of efficient adsorption capacity, good mechanical properties, environmental friendliness, degradability and low preparation cost.

Disclosed is a nipple care device pad.The nipple care device pad of the present invention includes a close contact part having a predetermined area, a nipple loading part protruding in one direction of the close contact part and having a predetermined space therein so that a nipple is positioned in the space, a nipple pressure application hole formed at an end of the nipple loading part so that a pressure is applied to the nipple, and a filter part selectively seated in the nipple loading part and configured to filter out secretions released from the nipple to which the pressure is applied.

An apparatus comprises one or more solids separators to be positioned downhole in a well formed in a subsurface formation, wherein each of the one or more solids separators are configured to receive a fluid from the subsurface formation and separate out sediment from the fluid, wherein the sediment is transported after separation to a destination location.

The utility model belongs to the technical field of sewage treatment, and particularly relates to a coalescence air floatation oil removal device for oil and gas field wastewater treatment, which is characterized in that a cyclone sand remover, an oil particle coalescence layer, a micro air floatation device, an oil discharge device and a water discharge pipe are sequentially arranged in a shell from bottom to top, and an exhaust device is arranged at the upper part of one side of the shell; a sewage inlet pipe is arranged on the lower portion of one side of the shell and connected to the feeding end of the cyclone desander. Oily sewage passes through the cyclone sand remover to remove large-particle-size silt, then passes through the oil particle coalescence layer, tiny oil particles gradually form an oil film on the surface of a coalescence material, after the oil film reaches a certain thickness, the oil film is deformed into large oil droplets which are sufficient to be separated and rise from a water phase, and then oil drops and suspended flocs in the oily sewage are removed through the micro air flotation device. Finally, floating oil enters the oil discharging device to be discharged, the oil-removed sewage is discharged through the water discharging pipe, oil-water separation is completed, the oil removal purpose is achieved, the oil removal effect is better, the sewage treatment effect is improved, and the water quality of produced water is improved.

The invention discloses a micro-nano air flotation coupling critical micro-flocculation phosphorus removal control method, which relates to the technical field of water treatment, and comprises the following steps: when the total phosphorus concentration is lower than a preset concentration threshold value, determining the proportion of non-target particles based on the water turbidity and particle spectrum distribution; adding a flocculating agent according to a preset critical dosage to generate target phosphorus floc, and synchronously forming a primary flocculation phase which can be distinguished from non-target particles; applying an interfacial activity regulation factor to the micro-nano bubbles based on the primary flocculation phase, and performing selective regulation; forming a bubble-phosphorus floc complex based on a selective regulation effect; the bubble-phosphorus floc complex is separated and removed in an air flotation mode, the competition intensity history of non-target particles is recorded, and a competition memory curve is formed. According to the method, interfacial activity regulation factors are applied to the surfaces of the micro-nano bubbles, so that the micro-nano bubbles can preferentially and selectively adsorb target phosphorus floc, and efficient removal of low-concentration total phosphorus is realized.

The invention relates to the technical field of organic fertilizer preparation and waste recycling, in particular to a food industrial park wastewater recycling and sludge resourceful treatment method which comprises the following steps: step 1, dynamically partitioning wastewater and cooperatively separating grease, monitoring the conductivity and turbidity of wastewater at water outlets of all workshops in real time, and dynamically dividing wastewater load grades according to monitored values; step 2, coupling biological treatment and carbon source circulation, inputting the effluent in the step 1 into an anaerobic reactor according to a real-time COD load ratio, adding a sludge glycolysis solution as a carbon source supplement, and dynamically adjusting the adding amount based on the ratio of volatile fatty acid to alkalinity; step 3, catalytic oxidation-membrane coupling advanced treatment: carrying out catalytic ozonation on aerobic effluent through sludge-based activated carbon, and adjusting the filling amount of a catalyst in a stepped manner along with characteristic parameters of organic matters in the effluent; 4, directional glycolysis of the sludge and closed-loop utilization of products. Through monitoring and dynamic adjustment, the problems of high energy consumption, low treatment efficiency, resource waste and the like in a traditional wastewater treatment method are effectively solved.

The invention relates to a covalent organic framework / melamine-based sponge composite material as well as a preparation method and application thereof. The covalent organic framework / melamine-based sponge composite material comprises melamine sponge and a covalent organic framework material, the covalent organic framework material is prepared by reacting an amino monomer with an aldehyde group monomer; the aldehyde group monomer is an aldehyde group monomer containing hydroxyl. The composite material based on the covalent organic framework / melamine sponge combines the excellent hydrophobicity of the covalent organic framework and the high porosity of the melamine sponge, so that the composite material has extremely high adsorption capacity on oil, repels moisture, has an excellent oil-water separation effect and can realize efficient oil-water separation.

Some implementations relate to a downhole separation system configured to be positioned downhole in a well formed in a subsurface formation, wherein the downhole separation system is configured to receive a formation fluid from the subsurface formation and configured to separate the formation fluid into a first fluid primarily comprised of a production fluid and a second fluid primarily comprised of a nonproduction fluid, the downhole separation system including, at least a first coalescer to be positioned within a downhole tubular, wherein the first coalescer is configured to separate out at least a portion of debris and the production fluid from the second fluid.

The invention belongs to the technical field of sewage treatment, and particularly relates to a coking phenol-cyanogen sewage treatment system, which comprises a pretreatment stage, a biochemical treatment stage and an advanced treatment stage, a mixing cavity, a flotation cavity, a separation cavity, a scum cavity and a clear water cavity are sequentially formed in the air flotation tank; the scraping plate is movably connected to the upper part of the separation cavity and is used for scraping dross; the recovery valve pipe is arranged below the clear water cavity, and a concentration sensor is arranged in the recovery valve pipe and used for detecting the impurity concentration in the clear water; according to the coking phenol-cyanogen sewage treatment system, the scraping depth of the scraping plate is correspondingly adjusted according to the concentration value of the impurities at the clear water, and the larger the amount of scum in the separation cavity is, the larger the downward moving speed of the corresponding scraping plate is, so that the scum in the separation cavity can be thoroughly and effectively scraped and recycled by the scraping plate.

The invention discloses a marine sewage treater and a sewage treatment system, and relates to the technical field of sewage treatment.The marine sewage treater comprises a tank body, the tank body is provided with a sewage inlet, a purified water outlet and an oil stain outlet, a center cylinder and a spiral flow guide pipe are arranged in the tank body, and the top end of the spiral flow guide pipe is communicated with the sewage inlet; the bottom end of the spiral flow guide pipe is communicated with the central cylinder, a partition plate is fixedly arranged in the tank body, the spiral flow guide pipe and the central cylinder both penetrate through the partition plate, the partition plate is of a net surface structure, a filler layer is arranged in the tank body and located above the partition plate, and the purified water outlet is communicated with the space below the partition plate. And the oil stain outlet is formed in a position close to the top of the tank body. According to the device, oil stains and other suspended impurities in the flue gas washing water are efficiently and reliably cleaned, and it is guaranteed that the treated water quality meets the emission standard, so that the marine environment is protected.

The utility model discloses a highway service area domestic sewage treatment equipment with adjustable operation mode, including an anaerobic tank, a first multifunctional tank, a second multifunctional tank, a third multifunctional tank and an MBR tank connected in sequence, and a second aeration pipe, a third aeration pipe and a fourth aeration pipe are arranged in sequence at the bottom of the tanks, the air inlet ends of the aeration pipes are connected to a first fan through an air inlet pipe, and a second valve, a third valve and a fourth valve are arranged in sequence on the air inlet pipes of the first multifunctional tank, the second multifunctional tank and the third multifunctional tank. The treatment equipment of the utility model has the advantages of low energy consumption, low operation and maintenance cost, long service life, and adjustable operation mode. When used to treat domestic sewage in highway service areas, it can not only automatically and timely adjust the operation mode according to the changes in water quality and water volume, but also ensure that the effluent water quality is stable and up to standard, and at the same time, it can significantly reduce the operation cost, with high use value and good application prospects.

The invention discloses sewage treatment equipment and method for oil field thickened oil produced water. The equipment comprises pretreatment equipment, main body equipment, dissolved gas supply equipment and a water outlet pump. Main body equipment comprises barrel equipment, and a flotation cyclone used for achieving the functions of dissolved air flotation and cyclone separation at the same time, separating out large-particle suspended solids through centrifugal force difference and achieving floating of oil drops through microbubble adsorption surfaces is sequentially arranged on the inner portion of the barrel equipment from top to bottom. The coalescence filler layer is made of oleophylic and hydrophobic core-shell structure fibers, and emulsified oil is promoted to polymerize and break emulsion through surface energy difference; and the inclined plate sedimentation device adopts an inclined tube labyrinth surrounding structure, performs deep sedimentation by utilizing a laminar flow principle, and further removes oil drops formed after coalescence.

The utility model relates to the technical field of wastewater treatment, and particularly provides distributed electrolysis wastewater treatment equipment. The device comprises an electrolytic tank, two sides of the inner wall of the electrolytic tank are fixedly connected with guide rails, the top of the electrolytic tank is fixedly and rotatably connected with two groups of chain wheels, each group of chain wheels comprises two chain wheels, two chain belts are sleeved between the two chain wheels, and the two chain belts are connected with the guide rails. According to the utility model, through the arrangement of the slag removal plate mechanism, the automatic removal of dross in the electrolytic tank is realized, the wastewater treatment efficiency and cleanliness are improved, the driving motor drives the chain wheels and the chain belts to move, and then the slag removal plate mechanism is driven to move along the guide rail, so that the waste water treatment efficiency is improved. The scum shoveling and pushing device goes deep into the water surface to shovel and push scum, thoroughness in cleaning is guaranteed, the requirement for manual maintenance is reduced, and the practicability and efficiency of the device are improved.

The invention discloses a sewage dosing and filtering device for mutton processing, and relates to the technical field of filtering equipment.The sewage dosing and filtering device comprises a filtering and precipitating mechanism and a filtering box installed in the filtering and precipitating mechanism, a pretreatment filtering mechanism is arranged on one side of the top of the filtering and precipitating mechanism, and a dosing box is arranged on one side of the pretreatment filtering mechanism; the filtering and precipitating mechanism comprises a precipitating base, a precipitating frame is fixedly installed on one side of the top of the precipitating base, reciprocating sliding grooves are symmetrically formed in the inner side of the top of the precipitating frame, a precipitating box is slidably connected to the interior of the precipitating frame, and a first handle is fixedly installed on one side of the precipitating box; a plurality of air flotation machines are fixedly mounted in the settling tank, rotation of a spiral filter screen is realized by utilizing the characteristic that a cleaning gear is in meshed connection with a cleaning rack, and impurities can be cleaned and temporarily stored in the spiral filter screen by utilizing the spiral characteristic of the spiral filter screen, so that the effect of cleaning the impurities is achieved.

The invention provides an environment-friendly quick-drying paint mist recovery system for automobile repair paint spraying, and relates to the technical field of paint mist recovery. The environment-friendly quick-drying paint mist recycling system for automobile repair paint spraying comprises a paint spraying chamber, a fan, a spraying device, a circulating water system, a paint mist coagulant adding device, a paint mist settling pond or water tank, a filtering system, a slag removing device and a purified air discharging device, and a water curtain, a water curtain or a water rotating device is arranged in the paint spraying chamber and can capture paint mist; an air suction opening is formed in the front end of the fan, air containing paint mist is sucked into the system, the spraying device is arranged in the system and comprises a spraying pipe and a spraying head, and water or other liquid is sprayed through the spraying head. According to the paint mist purification device, the paint mist purification efficiency is high, paint mist particles with various particle sizes can be effectively captured, especially the treatment effect on fine paint mist is good, the paint mist purification efficiency can generally reach 90% or above, continuous operation can be achieved, and the paint mist purification device is suitable for large-scale paint spraying operation.

The invention discloses hydrophobic aerogel containing carboxyl nanocellulose and xanthan gum as well as a preparation method and application of the hydrophobic aerogel. The preparation method comprises the following steps: mixing cellulose and an acidic deep-eutectic solvent, performing water bath treatment, and stirring in distilled water through a wall breaking machine; mixing the nanocellulose suspension and the xanthan gum solution in equal mass, and uniformly stirring to obtain composite hydrogel; pre-freezing the composite hydrogel in an ultralow-temperature refrigerator, and performing vacuum freeze drying through a freeze dryer to obtain composite aerogel; spraying wax emulsion on the obtained composite aerogel, and drying to obtain the hydrophobic aerogel. The invention provides the hydrophobic aerogel containing the carboxyl nano cellulose and the xanthan gum, which is safe and environment-friendly, has good hydrophobic performance, adsorption performance and mechanical performance, can be directly used for food, and can be used for preparing an oil absorption pad and an oil absorption film.