7994results about "Liquid separation" patented technology

The invention discloses a coal chemical industry heavy oil sewage treatment system based on the Internet of Things, and relates to the technical field of coal chemical industry sewage treatment.The coal chemical industry heavy oil sewage treatment system achieves real-time monitoring of sewage and membrane surface pollutant attachment conditions through an Internet of Things sensor, processes data through a machine learning algorithm, evaluates the current membrane pollution degree, and improves the membrane pollution degree. According to the invention, pollution is accurately identified, a response is made immediately when pollution occurs, the cleaning period and the cleaning strength are intelligently adjusted by dynamically analyzing the pollution degree and the sewage treatment load, the starting time of cleaning is determined according to the actual pollution condition, excessive cleaning is avoided, the cleaning period can be accelerated when needed, and the resource utilization efficiency is improved. The membrane pollution trend is predicted through the long short-term memory network LSTM, the potential pollution problem is recognized in advance, the system is helped to take prevention measures before pollution deterioration, and the problem of system shutdown or treatment capacity reduction caused by membrane blockage is effectively avoided.

The invention belongs to the technical field of sewage treatment, and particularly discloses an oil-containing sewage treatment air flotation machine which comprises an air flotation machine box body, and a front partition plate, a front oil collecting plate and a rear oil collecting plate are sequentially arranged in the air flotation machine box body from left to right. The front partition plate, the front oil collecting plate and the rear oil collecting plate sequentially divide the air flotation machine box into a mixing pool, an air flotation pool, an oil collecting pool and a slag collecting pool from left to right, a slag scraping assembly is arranged on the upper side of the air flotation pool of the air flotation machine box, a rotary filter plate is arranged on the upper portion in the oil collecting pool, and operation rails are arranged on the upper walls of the two symmetrical side walls of the air flotation machine box. The inner side wall of the air floatation machine box body and the inner side wall of the running track are provided with multi-stage track grooves, and the multi-stage track grooves comprise a slag scraping track groove, a slag salvaging track groove and an oil filtering track groove. The adjusting baffle moves along the slag scraping track groove, the slag salvaging track groove and the oil filtering track groove, the walking path of the adjusting baffle is divided into a slag scraping stage, a slag salvaging stage and an oil filtering stage, and classified collection of scum and oil is automatically achieved.

The invention discloses a bio-based foam adsorption material as well as a preparation method and adsorption application thereof. The bio-based polymer is used as a foam skeleton, the adsorbent with a large specific surface area is added to further improve the foam adsorption capacity, the cross-linking agent and the reinforcing filler improve the overall strength of the foam, and the bio-based foam adsorption material with the high adsorption capacity is obtained. The bio-based foam disclosed by the invention is light in weight, controllable in hydrophilicity and hydrophobicity, and capable of separating and removing pollutants such as oil and organic dye. The foam has high adsorption capacity and good cyclic adsorption capacity, can be repeatedly used, is biodegradable, does not pollute the environment, can effectively adsorb dangerous chemicals existing in a water body, does not cause secondary pollution, and can be used for decontamination treatment of organic pollutants in industrial wastewater.

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 belongs to the technical field of cutting fluid wastewater treatment supervision, and particularly relates to a cutting fluid wastewater treatment system for machine tool accessory processing, which comprises a wastewater step-by-step treatment unit, an in-out online monitoring unit, a pollution analysis unit, a wastewater treatment management and control analysis unit and an intelligent management end, various pollutants in cutting fluid wastewater are removed by integrating various treatment technologies through the wastewater step-by-step treatment unit, and the in-out online monitoring unit samples the cutting fluid wastewater before treatment and purified water after treatment and collects monitoring data of various pollution parameters in corresponding sampled liquid. The pollution analysis unit judges the pollution condition based on the monitoring data of each pollution parameter in the corresponding sampling liquid, and the wastewater treatment management and control analysis unit judges whether wastewater treatment is abnormal or not through analysis and accurately evaluates the treatment management and control performance for cutting fluid wastewater treatment. The treatment efficiency and the treatment effect of the cutting fluid wastewater can be guaranteed, and the intelligent and automatic levels are high.

The invention belongs to the technical field of sewage treatment, particularly relates to laboratory efficient dissolved air flotation sewage treatment equipment and a use method thereof, and provides the following scheme aiming at the problems that scum cannot be effectively scraped by a scraper blade when the existing liquid level surface is relatively low, and a flocculating agent added in the later period is accumulated at the top of the scum: the laboratory efficient dissolved air flotation sewage treatment equipment comprises an air flotation box, a sewage liquid inlet pipe is arranged on one side of the air flotation box and used for injecting sewage, a sewage discharge pipe is arranged at one end of the air flotation box and used for discharging treated sewage, a scum discharge port used for discharging scum is formed in one end of the air flotation box and located above the sewage discharge pipe, a collecting box located below the scum discharge port is fixed to one end of the air flotation box, and a water outlet is formed in the other end of the air flotation box. According to the device, through cooperation of the air outlet cylinder, the nozzle and the scum discharging plate, the scum can be automatically gathered towards one side and discharged from salvage, scum removal is effectively completed, a flocculating agent can be automatically injected after scum removal, the flocculating agent is prevented from being accumulated on the scum, and the later sewage treatment efficiency is guaranteed.

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 relates to the technical field of sewage treatment, in particular to water conservancy river pollution ecological restoration equipment. The aeration assembly is used for aeration in the central area in the aerobic tank; the drainage assembly is used for accumulating sewage; the dirt removal assembly comprises two dirt removal boxes which are fixedly mounted at the lower positions of the inner wall of the aerobic tank, and filter cotton is fixedly mounted at the middle positions of the inner walls of the two dirt removal boxes. Part of sewage is discharged into the reservoir and the external box to drive the lifting plate to ascend and descend, and in the ascending and descending process of the lifting plate, the annular water storage tank is driven by the connecting plate to ascend and descend intermittently, so that foams and scum flowing to the edge in the aerobic tank can flow into the annular water storage tank in the descending process of the annular water storage tank, and the foams and the scum can flow into the annular water storage tank. And oil dirt, organic matters and scum which generate foams are thoroughly filtered through the filter cotton by driving the lower pressing plate to ascend and descend.

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 relates to the technical field of sewage treatment, and discloses an advanced treatment method and device for ship oily wastewater, and the method comprises the following steps: carrying out preliminary filtration on the ship oily wastewater to remove suspended solids and particulate matters so as to obtain first oily wastewater; the first oily wastewater is subjected to coalescence separation treatment, floating oil, dispersed oil and a small part of emulsified oil in the wastewater are removed, the oil content in the wastewater is reduced to 500 ppm or below, and second oily wastewater is obtained; the second oily wastewater is subjected to cross-flow ultrafiltration deep treatment, emulsified oil and dissolved oil are intercepted, produced water and concentrated water are obtained, and the concentrated water serves as third oily wastewater; the third oil-containing wastewater flows back to the first oil-containing wastewater, and discharged water is obtained after the produced water is detected to be qualified. The invention provides a primary filtration, coalescence separation and ultrafiltration three-stage circulating filtration method, emulsified oil and dissolved oil can be efficiently separated and removed, oil resource recovery is realized, and membrane pollution is reduced.

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 chemical sewage treatment, in particular to a chemical sewage treatment reaction device which comprises a supporting base, a treatment tank is fixedly installed in the supporting base, a plurality of evenly-distributed discharging holes are fixedly formed in the lower end face of the treatment tank, and a main body mechanism used for integrated installation is arranged in the treatment tank. An integrated operation model of flotation, adsorption and impurity removal is adopted for rapidly completing flotation treatment on oily sewage, operation complexity is reduced through one-time synchronous fixing and centralized installation, bubbles are made to adapt to different oil drops in a step-by-step flotation mode, air outlet positions are switched through rotation, uniform distribution of the bubbles is achieved, and the flotation efficiency of the oily sewage is improved. And after flotation is completed, upper-layer sewage is directly pumped to cool and solidify grease, and the grease is filtered layer by layer, so that the risk of repollution is effectively reduced, the separation of the grease and solid impurities is optimized, and efficient, convenient and environment-friendly sewage treatment is realized.

The utility model provides a petroleum wastewater oil-water separation device which is connected with a discharge port of a mixer, the mixer is used for mixing and reacting oil dirt in petroleum wastewater with air and a flocculating agent to form scum, the device comprises an air floatation tank, one end of the air floatation tank is connected with the discharge port of the mixer through a conveying pipeline, and the other end of the air floatation tank is provided with a receiving hopper; a scum scraping mechanism is arranged at the top of the air floatation tank; the dredging mechanism comprises a push block, a connecting plate and a reciprocating mechanism, the connecting plate is connected with the push block, the connecting plate is slidably connected in a vertically arranged sliding sleeve, the sliding sleeve is fixed in the receiving hopper through a transverse plate, the reciprocating mechanism is arranged at the other end of the air floatation tank, and when the connecting plate moves downwards to the maximum limit, the push block enters a slag discharging opening of the receiving hopper, and the slag discharging opening is opened. When the connecting plate moves upwards to the maximum limit, a preset distance is reserved between the push block and the slag discharging opening. The device can dredge the material receiving port in time through the dredging mechanism, so that a large amount of scum is prevented from being accumulated in the receiving hopper to influence the scraping of the scum in the air floatation tank.

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 relates to the technical field of sewage treatment, in particular to an aeration device for sewage treatment, which comprises an aerator, an adjusting unit for adjusting the aeration rate according to the water quantity, and a treatment unit for cleaning and collecting scum on the water surface, the adjusting unit comprises an outer pipe for supplying air to the aeration machine, an inner pipe and an air inlet piece for controlling the inner pipe to supply air to the outer pipe. According to the invention, through the arrangement of the lower floating plate, the upper floating plate and the connecting floating plate, the inner pipe is driven to adjust the height, the situation that when the water level is relatively low, the air inlet pipe of the aerator is exposed and shakes under the influence of wind power in strong wind weather to cause damage is avoided, and meanwhile, the aeration rate of the aerator can be naturally adjusted according to the water quantity without manual adjustment, so that the aerator is more convenient; as the lower floating plate, the upper floating plate and the connecting floating plate float on the water surface, scum on the water surface can be collected and treated, meanwhile, leaves blown to the water surface in strong wind weather can be collected and treated, and the use effect is good.

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.

A water surface cleaning robot includes a robot shell provided with a roller brush, two ends of the roller brush being connected with the robot shell, and a storage basket is arranged inside the robot shell. One side of the storage basket is provided with a baffle, a top portion of the storage basket is provided with an opening extending to the baffle, the roller brush is arranged above the baffle, the roller brush includes a plurality of blades, one end of the blade is provided with a hook, and the hook is oriented to one side entering water. Because the blade is provided with the hook, when the blade rotates to enter water, a contact area between the blade and a water surface is reduced, so that a resistance of the water surface to the blade is reduced, and a shoveling force generated by rotation is stronger.

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.

A solar boat for easy collection of spilled oil and garbage of the present disclosure includes a cabin unit, a boat body consisting of a pair of ship bottoms having a structure that is symmetrical left and right and spaced apart below the cabin unit, a solar panel unit provided above the cabin unit and configured to convert solar energy into electrical energy, a collection and transfer unit provided between the pair of ship bottoms, driven by the electric energy supplied from the solar panel unit, and configured to collect spilled oil and garbage into the inside of the boat body, a garbage storage unit, and a spilled oil storage unit, wherein the collection and transfer unit comprises a rotating conveyor belt, and an oil adsorption member and a collection member that are attached to and detached from the conveyor belt, and the solar boat for easy collection of spilled oil and garbage of the present disclosure has an effect of having excellent work efficiency by simultaneously including an oil adsorption member and a collection member that are attached to and detached from a conveyor belt and simultaneously proceeding with collection of spilled oil and collection of garbage on the water, and an effect of being able to separate the spilled oil from the oil adsorption member, the collection member, and the garbage and easily move the spilled oil to the spilled oil storage unit by including a steam spray nozzle configured to spray hot steam at the end of the conveyor belt.

The invention relates to the technical field of preparation of polymer oil-water separation membranes, in particular to a preparation method, a product and application of a hydrophilic PLA oil-water separation membrane. The preparation method of the hydrophilic PLA oil-water separation membrane comprises the following steps: dissolving polylactic acid in an organic solvent to obtain a spinning solution; carrying out electrostatic spinning on the spinning solution to prepare a PLA nanofiber membrane; the PLA nanofiber membrane is soaked in a dopamine hydrochloride solution, then membrane cloth is taken out, washed and dried, and the hydrophilic PLA oil-water separation membrane is obtained. The preparation method is low in cost and simple in preparation process. The PLA (at) PDA nanofiber membrane prepared by the preparation method disclosed by the invention is relatively high in oil-in-water emulsion separation efficiency and relatively high in separation rate, and has a good separation effect on n-hexane, gasoline, petroleum ether, peanut oil and the like, and the separation efficiency can reach 98% or above. The PLA (at) PDA nanofiber membrane disclosed by the invention is simple and convenient to apply and does not cause secondary pollution.

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.