271 results about "Fouling" patented technology

The invention relates to the technical field of water treatment, and provides a reverse osmosis membrane cleaning method, a cleaning agent composition and application. According to the method, whether cleaning is needed or not is determined by comparing initial operation parameters and current operation parameters of a system; the pollutant type is accurately judged by observing the appearance characteristics of the membrane surface and detecting related index parameters; and selecting a corresponding cleaning agent formula according to the pollutant type, and sequentially performing physical washing and chemical cleaning. The cleaning agent composition comprises a biological pollution cleaning agent, an organic pollution cleaning agent and / or an inorganic scaling cleaning agent. By establishing a scientific pollution diagnosis system and a targeted cleaning strategy, the problems of fixed cleaning scheme and low pertinence in the prior art are solved, the pressure difference recovery rate after cleaning can reach 90% or above, the desalination rate recovery rate can reach 99% or above, the cleaning efficiency is remarkably improved, the operation cost is reduced, and the service life of the membrane is prolonged.

The invention discloses a calculation method and a calculation device for a film state boiling starting point of a surface with dirt, and belongs to the field of nuclear power. The calculation method for the membrane state boiling starting point of the surface with the dirt comprises the following steps: establishing a fuel rod cladding surface heat exchange model with the dirt according to a fuel rod cladding model with the dirt and thermal parameters, and calculating to obtain a heat conductivity coefficient and permeability of a dirt area; calculating the gas film thickness at the beginning of film boiling; according to the pressure balance and energy conservation equation, the heat flux corresponding to the minimum gas film thickness value is obtained through calculation and serves as the initial heat flux of film boiling. The method can accurately calculate the initial heat flux density of membrane boiling under the influence of dirt, and improves the precision of systematically analyzing the influence of dirt on the thermal hydraulic performance of a reactor.

The invention provides a composite acrylic acid low-surface-energy antifouling coating, a preparation method and application, and belongs to the technical field of marine antifouling materials, the composite acrylic acid low-surface-energy antifouling coating comprises a three-layer composite structure, the three-layer composite structure comprises a bottom layer, a middle layer and a surface layer from bottom to top, the bottom layer is capsaicin-loaded polymethyl methacrylate, and the middle layer is a polymethyl methacrylate surface layer. The bottom layer is made of capsaicin, the middle layer is made of pressure-sensitive adhesive activated by oxygen plasma, the surface layer is made of dihydroxyl-terminated polydimethylsiloxane, the mass ratio of the bottom layer to the middle layer to the surface layer is (23-25): 1: (23-25), and the mass content of capsaicin in the bottom layer accounts for 5.82-5.75% of the total mass; based on the bonding strength change of the pressure-sensitive adhesive generated by oxygen plasma jet and the capsaicin for effectively inhibiting biological growth, polyacrylic acid is used as a self-polishing reservoir to continuously release an environment-friendly antifouling agent; the pressure-sensitive adhesive adheres to the polydimethylsiloxane layer through the adhesive force change generated by oxygen plasma to achieve the low-surface-energy antifouling effect, synergistic gain is achieved, the composite material intervenes into the biological fouling process from multiple aspects, and the composite material copes with the marine biological fouling process jointly.

The invention relates to the technical field of thermal power generation, in particular to a direct air cooling condenser fouling thermal resistance estimation method combined with a scaling mechanism, and aims to realize stable and accurate real-time estimation of the fouling thermal resistance of a condenser. The method includes the steps that operation parameters of the direct air cooling unit are collected and preprocessed to form a continuous time sequence; calculating multiple groups of cleaning total heat transfer coefficients based on the cleaning period operation parameters, training a machine learning model based on the cleaning total heat transfer coefficients, and establishing a cleaning heat transfer coefficient reference model; calculating an actual total heat transfer coefficient based on the current operation parameters, inputting the reference model to obtain a corresponding cleaning coefficient, and calculating initial fouling thermal resistance according to the cleaning coefficient; and establishing a discrete linear recursion physical filtering model based on a dirt deposition-denudation mechanism, identifying model parameters on line by taking the initial dirt thermal resistance as an observed quantity, performing physical constraint filtering on the model parameters, and outputting a final dirt thermal resistance online estimated value.

The invention provides a cooling tower cleaning period decision-making method based on filler layer resistance characteristic online identification, which comprises the following steps: acquiring multi-dimensional time sequence data such as differential pressure, water temperature, conductivity, turbidity and microbial concentration based on a multi-source sensor, and constructing a structured trend characteristic matrix through time synchronization, abnormal value elimination and statistical characteristic extraction; in combination with expert knowledge, constructing a multi-modal combined pollution knowledge graph, and learning pollution factor interaction weights by using a graph neural network to realize causal reasoning of combined pollution mechanisms such as scaling, biological slime and the like; according to the method, an abnormal causal chain path is efficiently matched in a knowledge graph by adopting improved A * search, causes and evolution stages are output, automatic attribution and intelligent cleaning suggestion optimization are realized, and the resistance abnormity diagnosis accuracy and the adaptability of a cleaning strategy are improved by continuously feeding back diagnosis results and dynamically expanding a knowledge graph structure.

The invention discloses a detoxification system for washed household garbage incineration fly ash, and belongs to the technical field of hazardous waste treatment. Comprising a fly ash temporary-storage tempering unit, a low-temperature anti-sticking drying unit, a temperature-control anti-scaling pyrolysis unit and a gas-solid separation unit which are connected in sequence. The fly ash caching and tempering unit is provided with a calcium salt content online detector and an anti-caking agent adding device, so that accurate tempering is realized; the low-temperature anti-sticking drying unit realizes low-temperature anti-sticking drying; the temperature-control anti-scaling pyrolysis unit adopts an indirect heating type rotary kiln and is provided with a plasma catalysis assembly, so that medium-temperature degradation of dioxin and scaling prevention are realized; the gas-solid separation unit comprises an efficient cyclone separator, a high-temperature ceramic dust remover and a water-cooled conveyor, and efficient separation and cooling are achieved. Through systematic structural design and integration, the technical problems that the calcium salt-containing fly ash after water washing is prone to caking and scaling in the treatment process, and dioxin degradation is not thorough are effectively solved.

The utility model relates to a low-concentration organic wastewater recovery treatment system which is provided with a pretreatment part, a biological activated carbon treatment part, a self-cleaning filter treatment part, an ultrafiltration treatment part and a reverse osmosis treatment part which are communicated through pipelines according to a treatment flow, wherein the pretreatment part is provided with an air flotation device, the biological activated carbon treatment part is internally provided with a ferrous iron doser, and the ultrafiltration treatment part is internally provided with a charge neutralizer doser; part of particulate matters in the wastewater are removed through the air flotation device, so that the pollution and blockage risk of subsequent equipment is reduced; through ferrous ions released in water, the activity of microorganisms in water and sufficient reaction of organic matters can be promoted, so that polar substances are passivated; the charge neutralizer is released in water, so that the adhesion of polar substances to the ultrafiltration membrane can be reduced, and the service life of the ultrafiltration membrane is prolonged.

The invention relates to a reverse osmosis membrane pollution control method based on green biological scale inhibition, which is especially suitable for reverse osmosis membrane pollution treatment in an industrial wastewater zero discharge system. The method comprises the following steps: regulating and controlling the composition of organic components of inlet water through a sand filtration pretreatment unit, and directly interfering the nucleation and crystallization processes of inorganic scaling on a membrane surface by utilizing naturally enriched microbial communities and extracellular polymeric substances thereof in a sand filtration process without adding a fungicide or a chemical scale inhibitor, so as to form a loose and reversible pollution layer structure. The method effectively reduces the scaling rate of inorganic salts such as calcium carbonate and the like, inhibits membrane surface biological pollution, delays compaction of a pollution layer, improves the membrane flux retention rate, prolongs the membrane operation cycle and reduces the cleaning frequency. Compared with an existing traditional physical or chemical pretreatment method, the natural scale inhibition effect of an ecological system in the sand filtration unit is fully utilized, and the method has the remarkable advantages of being low in operation cost, environmentally friendly, high in adaptability and the like.

The invention discloses a modularized regulation and storage tunnel and ecological landscape integrated system, which relates to the technical field of ecological water conservancy projects and comprises a regulation and storage tunnel module, an ecological landscape module and an intelligent regulation and control module, the regulation and storage tunnel module comprises an electroactive biological membrane-plant root system coupling reactor and an intelligent secretion capture-slow release module and is used for realizing regulation and storage of water and treatment of heavy metal ion pollutants; according to the method, the problem of bioelectrochemical coupling failure of a microorganism-plant interface is solved through construction of an artificial electron transfer path, intelligent regulation and control of the phenol concentration and multi-field coupling simulation, the heavy metal ion removal rate is stably increased, pipeline scaling is reduced, and traditional monitoring and model limitation is broken through; meanwhile, by means of ecological module collaboration, the biological diversity and the system stability are enhanced, the operation and maintenance cost is reduced, the service life of materials is prolonged, and a new interdisciplinary precise regulation and control solution is provided for urban water environment treatment.

The invention provides a ship underwater fouling organism image enhancement and intelligent identification collaborative optimization method, which comprises the following steps of: acquiring ship bottom initial three-dimensional point cloud data based on a three-dimensional reconstruction sensor, constructing and dynamically updating a ship bottom curved surface three-dimensional model and contour data, and planning and adaptively adjusting a scanning track according to the ship bottom curved surface three-dimensional model and the contour data; detecting the turbidity of a water area in real time, switching a multi-mode illumination mode, synchronously collecting an image, enhancing the image by adopting a matching algorithm, and outputting the enhanced image; and carrying out registration association on the enhanced image and the three-dimensional contour data of the ship bottom, training an intelligent identification model by using fused multi-modal data, and realizing fouling type classification and coverage area classification. According to the method, a track is dynamically adjusted to adapt to a complex ship bottom, illumination and an enhancement algorithm are switched according to turbidity to ensure image quality, multi-modal features are fused to improve recognition precision, efficient classification and grading are achieved by means of an intelligent model, and manual errors are reduced.

The invention discloses a dirt detection and treatment system for a sea drainage pipeline. The dirt detection and treatment system comprises a detection device and a dosing device, according to the detection device, the type and content of dirt are analyzed through a Fourier infrared spectrometer, the agent release amount of the agent adding device is adjusted in real time through an electromagnetic valve according to the result, and accurate agent release is achieved. The dirt detection and treatment system disclosed by the invention can accurately detect the scaling and corrosion states of a pipeline in real time and accurately control the addition amount of an upstream scale inhibitor and a bactericide, so that marine pollution caused by abuse of chemicals is greatly reduced, and an efficient, environment-friendly and real-time automatic pipeline dirt solution is realized.

The application provides a solid super-smooth surface and a construction method and application thereof, and relates to the technical field of marine antifouling. The solid super-smooth surface constructed by the application is composed of linear polyfluorosiloxane, the linear polyfluorosiloxane is combined with a substrate through a chemical covalent bond, the chemical covalent bond is firm, the problem that traditional biomimetic super-smooth surface lubricating oil is prone to loss in an underwater environment is solved, and the solid super-smooth surface has a longer performance of preventing and treating biological fouling. The solid super-smooth surface provided by the application has a linear structure and reliable underwater transparency, and the underwater visible light transmittance of the material can reach more than 95%.

The invention relates to the technical field of membrane scale inhibitor performance testing, in particular to a membrane scale inhibitor performance dynamic testing method and system. The operation condition of the same section of membrane element is simulated in the mode that multiple circulation periods are carried out, membrane inlet water is concentrated step by step, the frequency of a high-pressure plunger pump is reduced step by step along with the increase of the number of circulation periods so as to reduce the water inlet flow of a membrane assembly, and the recovery rate of the membrane assembly is synchronously adjusted to a proper set value in each circulation period; by monitoring turbidity data of an online turbidity meter on the membrane concentrated water side, when the turbidity of the concentrated water suddenly and abnormally rises, the scaling phenomenon can be judged to occur, a test end point is reached, and the periodic concentration cycle operation is ended. The technical problems that in the prior art, the actual membrane system operation condition cannot be simulated, the operation condition is greatly different from the actual scaling process, the experiment end point and the evaluation result are easily influenced by ion measurement errors, the operation is complex, the operation intensity is large, the reagent consumption and cost are high, and the test time is long are solved.

The invention relates to the technical field of industrial wastewater treatment, in particular to a treatment method for treating high-sulfonic-group wastewater by advanced oxidation, which comprises the following steps: regulating the pH value of the wastewater to 3.0-4.0, then carrying out photo-Fenton oxidation, controlling the molar ratio of H2O2 to Fe < 2 + > to be 300: 1-400: 1, regulating the pH value of the effluent to 5.0-6.0, adding sodium sulfite to quench residual H2O2 and flocculate and precipitate iron mud, and finally, carrying out secondary oxidation on the wastewater to obtain the high-sulfonic-group wastewater. Performing anaerobic-aerobic biochemical treatment on the supernate, adding sodium carbonate and sodium hydroxide into biochemical effluent to soften and descale, concentrating in a mechanical vapor recompression evaporator, washing and recrystallizing crystallized mother liquor, and adsorbing and purifying the crystallized mother liquor with activated carbon to obtain an industrial salt product. The problem of MVR evaporation scaling is effectively solved by accurately controlling the neutralization pH and combining the softening step, finally, wastewater standard treatment and salt high-quality recovery are achieved, the COD removal rate can reach 95% or above, and excellent environmental and economic benefits are achieved.

The application discloses an electrolyte analyzer maintenance liquid and a preparation method thereof. The maintenance liquid comprises cleaning components, electrode protection components, a buffer system, a preservative and a solvent. The cleaning components comprise a decomposition enzyme and a chelating agent, and the electrode protection components comprise inorganic salts, stabilizers and protective agents. Through the synergistic effect of the cleaning components, the electrode protection components, the buffer system and the preservative, the dual effects of cleaning and electrode protection of the electrolyte analyzer flow path can be simultaneously achieved. The decomposition enzyme in the cleaning components can decompose biological pollutants on the flow path and the electrode surface, the chelating agent can chelate metal ions, dissolve metal salt deposits and prevent inorganic salt fouling. The electrode protection components can maintain the stable potential of the electrode after the cleaning components remove the pollutants, prevent the electrode potential from drifting and prolong the service life of the electrode. The electrolyte analyzer maintenance liquid is mild and non-corrosive, avoids damaging the electrode sensitive film, is safe and environmentally friendly, does not release heavy metals and is easy to produce and prepare.

The invention provides an online monitoring method, device and equipment for heat exchanger dirt, and relates to the field of heat exchangers. The problem that the gathering condition of dirt in the heat exchanger cannot be monitored online in real time in the prior art is solved. The detection method comprises the steps that current operation parameters of a target heat exchanger are obtained; determining the current dirt resistance value of the target heat exchanger according to the current operation parameters and the equipment parameters of the target heat exchanger; the current heat exchange coefficient of the target heat exchanger is determined according to the current dirt resistance value and the initial heat exchange coefficient of the target heat exchanger; and according to the current heat exchange coefficient of the target heat exchanger, a dirt detection result of the target heat exchanger is determined, and the dirt detection result is output and displayed. According to the scheme, real-time detection of dirt in the heat exchanger and real-time monitoring of the heat exchange efficiency of the heat exchanger are achieved, the heat exchange efficiency of the heat exchanger is improved, and the maintenance cost of the heat exchanger is reduced.

The invention belongs to the technical field of marine corrosion and protection, and discloses an antibacterial peptide for marine corrosion prevention and fouling prevention and application of the antibacterial peptide, the sequence of the antibacterial peptide is H-NIle-NVal-NLys-NLU-NPhe-NLU-NTyr-NArg-NSer-NTrp-NLU-NHis-NLU-NLU-NIle-NH2, the antibacterial and preservative effects of common corrosion inhibition bactericides such as quaternary ammonium salts, organic guanidines and aldehydes can be effectively enhanced, and the antibacterial peptide can be applied to marine corrosion prevention and fouling prevention. The generation of a corrosive biological membrane and the microbial corrosion rate can be effectively inhibited, the dosage of a bactericide can be reduced by 60% or above, and continuous antibacterial and anticorrosion for 30 days can be realized.

The present invention provides potent antibiofilm and antifouling compounds albofungin and derivatives thereof isolated from Streptomyces chrestomyceticus BCC 24770, the construction of high-yield strains for albofungin production, and application of albofungin-based copolymer coatings to object or surfaces, particularly to inhibit fouling by marine organisms using hydrolysable and degradable antifouling coatings incorporated with albofungins.

The embodiment of the present application discloses a control method of a water purification system with cleaning and disinfecting functions, which determines the working procedure of the water purification system; the working procedure includes pure water preparation and cleaning and disinfecting; when the pure water is prepared, the waterway pipeline of the water supply module and the water preparation module is connected, and the wastewater discharge pipeline of the sewage module and the water preparation module is connected; the water preparation module is controlled to prepare pure water; when the cleaning and disinfecting is performed, the cleaning and disinfecting module is controlled to prepare an oxidizing solution; the waterway pipeline of the cleaning and disinfecting module and the water preparation module is connected, and the wastewater discharge pipeline of the sewage module and the water preparation module is connected; the oxidizing solution is controlled to clean the waterway pipeline of the water preparation module and the wastewater discharge unit discharges the used oxidizing solution. The water purification system can improve the problem of odor caused by bacteria breeding during use and storage, remove the pollutants such as scale and biological membrane formed on the surface of the RO membrane filter element, and thus prolong the service life of the water purification system.

The invention relates to the technical field of water treatment, and provides a reclaimed water irrigation multi-factor blockage cooperative treatment system and method. The reclaimed water irrigation multi-factor blockage cooperative treatment system comprises a salt ion slow-release regulation and control unit, a microbial film control unit and a water storage and backwashing unit which are connected in series. The salt ion slow-release regulation and control unit is filled with a quartz sand supporting layer, an iron oxide layer, a cation exchange resin layer, an aluminum oxide particle layer and a coarse sand layer in a layered manner, and chemical scaling is inhibited through ion exchange and adsorption; the microbial film control unit comprises a functional bacteria bed layer for colonizing a non-EPS type functional flora competitive inhibition biological film; the water storage unit is provided with an EC sensor and a pressure sensor, and backwashing is automatically triggered. The technical problems of chemical scaling, biological membrane adhesion and physical blockage are synchronously solved through chemical-biological-physical multi-factor collaborative treatment, and a closed-loop automatic control technology is combined, so that the manual intervention frequency is reduced, and the operation efficiency and reliability are improved.

The invention discloses a net cage fouling degree intelligent identification system and method based on electromagnetic-optical fusion perception, and belongs to the technical field of net cage fouling degree intelligent identification. The system comprises a mobile scanning platform, an integrated multi-mode sensing unit and a central processing unit; the integrated multi-mode sensing unit comprises an optical imaging module, an electromagnetic characteristic detection module and a positioning auxiliary unit. The method comprises the steps of cooperative scanning and multi-modal data acquisition, data fusion and contamination intelligent identification, accurate positioning and coordinate mapping, global contamination mapping, quantitative evaluation and cleaning decision support. According to the invention, through optical and electromagnetic multi-mode perception fusion, the identification precision of the types of the fouling organisms and the quantification accuracy of the coverage rate are greatly improved, and especially in a turbid water body, the limitation of a traditional single vision method is effectively made up; based on the global fouling distribution map generated by the fusion positioning technology, the operation mode change from blind traversal to accurate targeting is realized.

The utility model discloses a device for detecting the dirty degree of a large-scale aquaculture net cage, which belongs to the field of large-scale aquaculture and comprises a net cage, a machine is nested at the top of the net cage, a mooring rope is nested outside the machine, and a shell is fixedly mounted at the top of the machine. According to the utility model, a blue-green laser ranging application and net cage fouling condition judgment method and an algorithm for judging the net cage fouling condition by utilizing probability are adopted, and laser measurement is used for judging the underwater net cage fouling condition through cooperative work of the holder and the laser range finder, so that full-position, automatic and real-time detection of the deepwater net cage fouling condition is realized; the net rope pollution degree is reflected through the net rope return proportion of the effective return value in the distance measurement data by utilizing the principle of statistics, and whether the net rope needs to be cleaned or not is judged by detecting the probability of the net rope return data for multiple times and for a long time; therefore, the device has excellent performance in the aspects of automation degree, observation range, detection real-time performance, detection fineness and the like.

Provided are constructs comprising an enzyme, a linker, a polymer or immobilization material, and optionally a peptide tag as well as compositions comprising said constructs, which construct is useful for anti-fouling, among other uses. Methods of use of the constructions or compositions, such as for coatings that reduce biological fouling and / or the growth of mold and / or mildew, are also provided.

This invention relates to a multifunctional composite membrane containing a natural antibacterial agent and a biomimetic hydrophilic carrier, and pertains to the field of separation membrane manufacturing technology for water treatment applications. The membrane is prepared by blending MCM-41 type honeycomb-structured mesoporous silica modified with tea tree oil (TTO) with a PVDF membrane, aiming to enhance the membrane's antibacterial and antifouling capabilities. TTO, with its excellent antibacterial properties, effectively alleviates biofouling problems, while MCM-41 possesses a high specific surface area and good chemical stability, offering multiple benefits including improved membrane hydrophilicity, reduced fouling, and enhanced essential oil dispersion. The combination of tea tree oil and MCM-41 simultaneously addresses both organic and biofouling issues in PVDF membranes, achieving a synergistic improvement in both material and membrane performance.

A method for reducing or preventing corrosion or fouling in an apparatus for carrying out a chemical process, where corrosion or fouling is caused by acidic compounds present in the chemical process, which comprises the addition of at least one quaternary ammonium hydroxide of the formula (I) to the apparatus, wherein the chemical process is carried out: [Chem. 1] where R1, R2, R3 are each independently C1-C10 alkyl; R4 is inter alia C1-C18 alkyl, benzyl, monocycloalkyl having 5, 6, 7 or 8 carbon atoms, bicycloalkyl having 6 to 8 carbon atoms, tricycloalkyl having 7 to 10 carbon atoms, where monocycloalkyl, bicycloalkyl and tricycloalkyl are unsubstituted or substituted by 1 or 2 methyl groups, or tri-C1-C4 alkyl ammonium groups. R1 and R2 together with the nitrogen atom may also form a 5 or 6-membered, saturated nitrogen heterocycle, which is unsubstituted or carries 1 or 2 methyl groups; and / or R3 and R4 together with the nitrogen atom may also form a 5 or 6-membered, saturated nitrogen heterocycle, which is unsubstituted or carries 1 or 2 methyl groups.

This invention discloses a method for characterizing and numerically simulating a porous media model of parasitic dirt in a farmland irrigation system. This method relates to the field of agricultural water conservancy technology and includes: nondestructive testing of parasitic dirt on emitters to obtain a permeable porous media model; based on this permeable porous media model, computational fluid dynamics methods are used to numerically simulate the flow within the farmland irrigation system under parasitic dirt conditions to determine the fluid flow characteristics within the system. This method innovatively considers parasitic dirt as a porous medium composed of numerous solid skeletons and interstitial pores. This method constructs a porous media model of parasitic dirt in emitters by combining nondestructive testing of dirt characteristics, CT scanning-inverse modeling techniques, and porous media modeling. A numerical simulation method based on this model is developed, demonstrating the advantages of high accuracy, reliable calculation results, and strong universality.

The invention provides a durable antibacterial environment-friendly marine antifouling coating for machinery as well as a preparation method and application of the durable antibacterial environment-friendly marine antifouling coating, and belongs to the technical field of marine antifouling materials. Nano titanium dioxide; a curing agent; a pigment; the fluorine-containing quaternary ammonium salt polysiloxane prepolymer is prepared by carrying out dehydration condensation reaction on a quaternary ammonium salt silane monomer A, a phenyl-containing silane monomer B and a fluorine-containing silane monomer C in an organic solvent under the action of a basic catalyst; the quaternary ammonium salt compound adopted by the invention has the characteristics of excellent environmental compatibility, outstanding fast-acting antibacterial and algae-killing properties and the like, can endow the surface of a material with continuous microbial inhibition and killing properties, and blocks the colonization and reproduction chain of marine attachment organisms from the source by destroying the integrity of bacterial cell membranes and interfering the activity of biological enzymes, so that the marine attachment organisms can be effectively inhibited. The resistance of the coating to typical fouling organisms such as barnacles and diatom is obviously improved; and meanwhile, the modulus and hardness of the coating can be remarkably improved, so that the coating can better resist scratch, abrasion and collision.

In order to solve the problems that in the daily operation process of a surface evaporation air cooler, scaling, corrosion, biological slime and the like often happen to a water circulation system, normal operation of the system is seriously affected, the operation cost is increased, meanwhile, the normal service life of equipment is shortened, and the equipment is possibly scrapped in advance, the surface evaporation air cooler coupling cleaning technology is invented. Through effective application of the technology, various water scales, microorganism slime and corrosion products in a water system are effectively and thoroughly removed, meanwhile, a layer of protective film is formed on the surface of a pipeline, and a metal pipe bundle is effectively protected. Safe and normal operation of the system is guaranteed, cooling efficiency is remarkably improved, corrosion hidden danger is eliminated, equipment operation efficiency is improved, and the service life of equipment is prolonged.

The invention discloses a heating assembly with an anti-scaling function and an instant water heater. The heating assembly with the anti-scaling function has a heating mode and comprises a water inlet pipe communicated with a tap water pipe, a water outlet pipe communicated with a faucet and a shell, a water inlet is formed in the bottom of the shell, and a water outlet is formed in the top of the shell; when the heating assembly stops running, normal-temperature water in the water storage tank is circulated through the diaphragm pump by means of the first branch pipe, and the normal-temperature water and high-temperature water are neutralized through the second branch pipe, so that the water temperature in the heating mechanism is continuously reduced, the water temperature is kept below the temperature which is not prone to scaling, incrustation scale is greatly reduced, and the service life of the heating assembly is prolonged. The inner wall of the heating pipe is kept relatively clean for a long time, the possibility of pipeline blockage is reduced, the heat exchange performance and power stability of the heating assembly in long-term use can be guaranteed, the energy-saving effect is improved, and the service life of the heating assembly is guaranteed.

The application provides an anti-fouling polyethylene material and a preparation method thereof. The anti-fouling polyethylene material is prepared from the following components in parts by weight: polyethylene 45-70 parts, perfluoroethylene propylene copolymer 10-20 parts, nano diatomite 5-15 parts, nano titanium dioxide 5-10 parts, nano aluminum nitride 5-10 parts, dispersing agent 0.4 part, lubricant 0.3 part, and antioxidant 0.5 part. The ceramic powder prepared by compounding is used as an additive for preventing fouling and scaling, the hardness and hydrophobicity of the surface of the product are improved, the adsorption and agglomeration of stains of diatomite are combined, and the polyethylene composite material with good surface performance and good anti-fouling performance is obtained.