907 results about "Salt water" patented technology

The invention provides a solar interface evaporator based on amphoteric polyelectrolyte photo-thermal hydrogel, a preparation method and application, and belongs to the field of solar interface evaporation. The solar interface evaporator with a three-dimensional multi-surface evaporation structure is prepared by combining the polyelectrolyte resisting effect of the amphoteric polyelectrolyte photo-thermal hydrogel and the porous capillary effect of the sponge, and has the characteristics of high light absorptivity, good water absorption effect, excellent antibacterial property, mechanical property, salt resistance, evaporation property and the like; particularly, compared with a traditional hydrogel-based solar interface evaporator, the water delivery capacity and the salt resistance in high-concentration saline water are greatly improved through the application of the autonomously designed zwitterionic hydrogel, water molecules in the saline water are activated through the cooperation of salt-resistant ionized water, the evaporation enthalpy is reduced, and the evaporation efficiency is improved. And a great positive effect is achieved on improvement of the evaporation rate. The evaporator is easy to prepare and excellent in multi-dimensional performance, and a new way and thought are provided for application to seawater desalination and wastewater treatment.

The invention relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali soil treatment and improvement method which comprises the following steps: S1, early-stage investigation and planning; s2, physical improvement; s3, chemical improvement; s4, biological improvement; s5, irrigation improvement; s6, later monitoring and maintenance; according to the saline-alkali soil treatment and improvement method, a traditional single improvement mode is broken through, physical, chemical, biological and engineering technologies are fused, a systematic improvement scheme is formed, and physical improvement effectively improves the soil structure and accelerates salt discharge through land leveling, deep ploughing, upturned soil sunning and concealed pipe laying for drainage; a soil conditioner and an acidic material are precisely applied for chemical improvement, and the soil acidity and alkalinity and ion composition are adjusted; in biological improvement, salt is absorbed by virtue of salt-tolerant plants and microbial agents, and soil microbial communities are improved; a fresh water resource or salt water desalination technology is reasonably utilized for irrigation improvement, and salt leaching and water resource recycling are achieved; through the synergistic effect of multiple means, the salt content of soil can be more efficiently reduced, and the soil structure is improved.

The invention provides a low-carbon circulating technological process for treating high-total-nitrogen wastewater. A main treatment unit and a resource recycling and circulating unit are included; the main treatment unit is characterized in that high-total-nitrogen wastewater sequentially passes through a pH regulating tank, a sulfur autotrophic denitrification tank, a biochemical system, a secondary sedimentation tank, a deep treatment line and ultrafiltration reverse osmosis, produced reclaimed water enters produced water for delivery, and a part of produced concentrated water enters a resource recovery and circulation unit; the resource recovery and circulation unit is characterized in that after concentrated water is treated by a vertical electrophoresis device, mixed acid, mixed alkali and low-salt water are separated out, the mixed alkali is sent to a sulfur autotrophic denitrification tank to be used for supplementing alkalinity consumption of the sulfur autotrophic denitrification system, and the mixed acid sequentially passes through an anaerobic regulating tank, an anaerobic reactor, an alkali washing tower, a biological desulfurization reactor and a sedimentation tank; the recovered sulfur can be sold as elemental sulfur or reused in the sulfur autotrophic denitrification tank, and supernate flows back to the alkaline tower; a green, low-carbon and recyclable water treatment process flow is realized.

The invention discloses a conductor galloping and sag monitoring method and system based on Beidou differential analysis. The method comprises the following steps: monitoring a lead position, a conductivity change rate, a surface temperature and electric field intensity data of different heights, and calculating an electric field intensity gradient sequence between adjacent heights; and in the incremental time interval, determining a signal drift coefficient according to the incremental wire position data and the incremental electric field intensity data. When the conductivity change rate is greater than a preset threshold value and the surface temperature of the wire is lower than the dew point temperature, multiplying the signal drift coefficient by the ratio of the conductivity change rate to a preset reference rate to obtain a conductive film correction coefficient, and taking the product of the correction coefficient and the real-time electric field intensity as a correction amount; and deducting from the real-time wire position data to obtain correction data. By implementing the technical scheme provided by the invention, the accuracy of the lead position monitoring data in the salt water mist environment is improved.

The invention relates to the technical field of industrial production wastewater treatment, and particularly provides a resource utilization method of calcium chloride high-salt water containing high-concentration organic matters. The method comprises the steps of pretreatment, wet catalytic oxidation, salt type conversion, softening filtration, deep oxidation, nanofiltration purification and targeted adsorption, no residual mother liquor exists, no secondary pollution is generated, organic matters in effluent are stable and reach the standard, the water quality and water quantity fluctuation resistance is high, heterogeneous and homogeneous catalysts are combined for catalysis, and the purification effect is good. According to the method, the sodium chloride solution is used as a raw material, the homogeneous catalyst is recycled, in addition, most of salt in the homogeneous catalyst is also recycled, resource reutilization is fully achieved, the treatment cost is reduced, and the treated sodium chloride solution can be used as primary saline water for subsequent ion membrane electrolysis.

The invention discloses a printing and dyeing wastewater zero-discharge treatment process based on low-pressure high-power membrane concentration and salt separation synergy. The wastewater is sequentially subjected to the steps of double-alkali softening pretreatment, organic pollutant treatment, forward osmosis low-pressure high-power concentration treatment, salt separation treatment and evaporative crystallization. Wherein the forward osmosis low-pressure high-power concentration treatment is performed in a partitioned manner along the flow direction, the osmotic pressure difference is gradually increased, the transmembrane pressure difference is gradually decreased, and interface electrochemical buffer and low-frequency gas-liquid disturbance can be set to inhibit concentration polarization and pollution. Carrying out nanofiltration and salt separation on the concentrated solution to obtain two paths of saline water mainly comprising Na2SO4 and NaCl, and respectively carrying out evaporative crystallization on the two paths of saline water; and refluxing and reusing the water produced by the draw solution. According to the process, high-power concentration and stable salt separation are realized under low mechanical pressure, the energy consumption is reduced, the water recovery rate and the crystal purity are improved, and zero discharge of wastewater is realized.

A system and method are provided in at least one embodiment to process water to produce gas that can be separated into at least two gas flows using a water treatment system having a disk-pack rotating in it to cause out gassing from the water. In a further embodiment, the method and system use the gas released from the water to produce substantially fresh water from the processed salt water.

The invention provides a method for determining the residual yield of shale gas based on methane carbon isotope change in desorption gas. The method comprises the following steps: S1, putting a shale sample into a desorption tank filled with saturated salt water, and sealing; s2, placing the desorption tank in water, recording the volume of desorption gas according to the desorption time by using a drainage method, and collecting the desorption gas; s3, according to the analytic gas collected in each analytic time period, calculating accumulated total analytic gas, and calculating the proportion of the analytic gas in each analytic time period to the total analytic gas to obtain a stage accumulated analytic rate; s4, measuring the ratio of methane carbon isotope delta 13C in the desorption gas when the desorption rate is accumulated in each stage; and S5, establishing a change curve of the stage cumulative analysis rate of the shale gas and the methane carbon isotope delta13C so as to obtain a model for predicting the shale gas productivity stage. The invention provides a non-destructive and direct gas potential measurement means, which is high in accuracy and can be well adapted to shale gas prediction.

The invention discloses a salt spray test box, which belongs to the technical field of corrosion resistance testing, and comprises a salt spray test box body, and an anti-blocking mechanism is arranged in the salt spray test box body; according to the salt spray test box, the anti-blocking mechanism is arranged, so that the problem that the salt spray test box is easily blocked by salt particles in the long-time operation process is effectively solved, the anti-blocking mechanism adopts matched work of a cleaning brush, a scraper blade and a reset spring, continuous cleaning of a filter screen and a conveying pipe is ensured, and specifically, after a salt-water mixture enters the conveying pipe, the salt-water mixture is prevented from entering the conveying pipe; the transmission system drives the support to rotate, the support rotates to drive the reset spring to rotate and push the supporting plate and the cleaning brush to move, the cleaning brush is tightly attached to the surface of the filter screen, automatic cleaning is carried out, undissolved salt particles are prevented from entering the conveying pump and the spray head, and it is ensured that salt water can be evenly and cleanly conveyed to a test sample; and equipment faults caused by salt particle blockage are avoided.

The invention relates to the technical field of water treatment, and discloses a method for circularly inducing crystallization, hardness removal and desalination of calcium carbonate. Adding the seed crystal into high salt water; adding sodium hydroxide into the heavy salt water; adding sodium carbonate to generate a supersaturated solution; introducing the solution containing the calcium carbonate crystal nucleus into crystallization equipment; treating the reacted solution through solid-liquid separation equipment; further desalting the water body subjected to hardness removal by adopting a membrane separation mode; collecting and treating the formed calcium carbonate precipitate, and recovering the precipitate by adopting a separation technology; by adopting the synthesized vaterite type seed crystal, the hardness removal and desalination efficiency is remarkably improved in the cyclic induced crystallization process of calcium carbonate. Compared with the traditional non-synthetic seed crystal, the synthetic seed crystal has higher surface area and uniformity, so that the combination of calcium ions and carbonate ions can be more quickly induced to form a stable crystal nucleus, and the overall effect of the reaction is finally improved.

The invention discloses a corrosion and scale inhibitor suitable for high-salinity water quality and a preparation method and application thereof.The corrosion and scale inhibitor comprises nano SiO2 at NH2, organic phosphonate, zinc salt, polycarboxylic acid and nano SiO2, a corrosion inhibition component is composed of the nano SiO2 at NH2, the organic phosphonate and the zinc salt according to the mass ratio of (0.8-1.2): 0.5: (0.3-0.4), a scale inhibition component is composed of the polycarboxylic acid and the nano SiO2 according to the total solid content mass ratio of 3: 1, and the scale inhibition component is composed of the nano SiO2 at NH2, the organic phosphonate and the zinc salt. The polycarboxylic acid grafting rate in the scale inhibition component is greater than or equal to 80%, and the corrosion inhibition component and the scale inhibition component are compounded according to the ratio of 1: 1 to prepare a finished product agent; the preparation method comprises the following steps: preparing the corrosion inhibition component, adjusting the pH value to 3-4, preparing the scale inhibition component, and compounding the corrosion inhibition component and the scale inhibition component to prepare the finished product agent. According to the invention, nano SiO2 and NH2 are added to prepare a corrosion inhibition component, nano SiO2 is added to prepare a scale inhibition component, and the components are strictly mixed step by step, so that the components form a chemical and physical multi-synergistic corrosion and scale inhibition effect, and the finished agent has the characteristics of corrosion inhibition rate, CaCO3 resistance rate higher than 95%, MgSiO3 resistance rate higher than 80%, high-salt environment tolerance, high high-temperature stability, low biotoxicity and the like.

A system is provided in at least one embodiment to process water to produce gas that can be separated into at least two gas flows using a water treatment system having a disk-pack rotating in it to cause out gassing from the water. In a further embodiment, the system use the gas released from the water to produce substantially fresh water from the processed salt water.

The present disclosure is directed to a geothermal desalination system, comprising; a primary liquid circuit circulating a liquid into a geothermal well and returning heated liquid from a well head of the geothermal well, the primary liquid circuit passing through a desalination plant; a first turbine driven by the heated liquid to produce a mechanical output; and an air compressor driven from the mechanical output to provide a first compressed air supply and a second compressed air supply, wherein the first compressed air supply drives a supply pump to supply salt water to the desalination plant, and the second compressed air supply drives a-start-up pump to initiate circulation in the primary liquid circuit.

The invention discloses low-temperature coagulation-accelerating anion styrene-butadiene latex for oil field well cementation and a preparation method of the low-temperature coagulation-accelerating anion styrene-butadiene latex. The low-temperature coagulation-accelerating anion styrene-butadiene latex comprises the following components in parts by mass: 100 parts of anion styrene-butadiene latex raw stock; 4 to 10 parts of a nonionic surfactant I; 2 to 4 parts of a nonionic surfactant II; 10 to 20 parts of water glass; 0.5 to 1 part of a defoaming agent; and 15-20 parts of deionized water. The low-temperature coagulation-accelerating anionic styrene-butadiene latex prepared by the invention is used in cement paste, has short thickening time at low temperature, can resist sodium chloride brine to reach semi-saturation, and can effectively control the water loss of the cement paste, improve the anti-channeling performance of a cement paste system, reduce the elastic modulus of set cement, increase the density of the set cement and improve the stability of the set cement. Therefore, formation gas is effectively prevented from invading cement stone, and well cementation quality is guaranteed.

The utility model relates to a water softening system and water softening machine equipment. The water softening system comprises a controller, a resin container, a constant-pressure siphon regeneration device and a waterway control valve, the water path control valves are arranged at the joints of water paths of the water softening system, the controller is respectively connected with the constant-pressure siphon regeneration device and the water path control valves, and the controller is used for controlling the constant-pressure siphon regeneration device to start and controlling the working state of the water path control valves in a regeneration mode. The constant-pressure siphon regeneration device is used for generating saline water with target concentration, and the saline water is driven to reversely flow in the resin container and then is discharged through the sewage port. The salt water with the target concentration is stably generated through the constant-pressure siphon regeneration device, so that the regeneration efficiency of ion exchange resin in the resin container and the water softening performance of the whole machine can be effectively improved.

The invention relates to a closed heat exchange circulating water and saline water concentration coupling device and a process thereof, the device comprises a closed circulating water system and a high-salinity water concentration system, and is characterized in that the high-salinity water concentration system is a closed circulating water cooling tower, the closed circulating water cooling tower is of a three-section structure, namely an upper section, a middle section and a lower section, a fan and a sprayer are mounted in the upper section, a straight-section air duct, a second heat exchanger and an air inlet grille are mounted in the middle section, a salt storage water tank is mounted in the lower section, and a closed circulating water system is formed among the second heat exchanger, an external first heat exchanger, a buffer and a circulating water pump. According to the invention, the chlorine salt water needing to be concentrated is evaporated by fully utilizing the characteristics of the circulating water cooling tower and the heat transfer requirement, so that the concentration of 5% chlorine salt water reaches 30% or above, and the concentrated salt water is sold as a byproduct, or is evaporated and crystallized in a multi-effect evaporation device to produce byproduct salt (calcium chloride / sodium chloride industrial salt).

The invention discloses a device for simulating migration of pollutants under mining and tidal conditions. The device comprises an aquifer loading tank, a pollution tank simulation pollution source and a plastic pipe simulation pumping well are arranged in the tank; the left side and the right side of the aquifer loading groove are divided into a salt water chamber and a fresh water chamber by acrylic plates with seepage holes; the same constant water head device is arranged in the salt-fresh water chamber; and a tide device is arranged on the salt water chamber to simulate the tidal effect of seawater. The positions of the pollution tank and the pumping well are not fixed and can be adjusted; a plurality of salinity concentration monitoring devices are arranged on the rear side of the aquifer loading groove; the inhomogeneous medium of the coastal zone aquifer is simulated by filling the aquifer loading groove with sand samples in a layered manner, so that seawater invasion is simulated. The device can simulate the migration of pollutants in the aquifer under different tide conditions and exploitation conditions, monitor the concentration change of the pollutants and the water pressure change of each part in the horizontal direction in real time, and can simulate the migration situation of the pollutants under the combined action of tide coupling underground water exploitation.

A high-salinity-resistant weakening filling material prepared from waste solid, liquid and gas in a mining area belongs to the technical field of mine filling materials, and is prepared from the following raw materials in parts by mass: 30-45 parts of fly ash, 10-30 parts of gangue powder, 5-10 parts of cement, 5-10 parts of an alkaline additive, 15-50 parts of high-salinity water and industrial waste gas. Wherein the concentration of salt ions in the high water is not lower than 1000mg / L; the filling material is prepared by combining the coal-based solid waste, the high water content, the industrial waste gas and the alkaline silicon-based additive, the recycling of the fly ash, the high water content and the industrial waste gas from the flue gas of the power plant is realized, and the low-carbon and high-efficiency mineral resource development concept is met.

The invention relates to a capsule plug system for plugging a hydraulic tunnel, and belongs to the technical field of sealing of hydraulic engineering. The system comprises a refrigerating machine arranged outside the hydraulic tunnel and a cylindrical water bag stuffed into the hydraulic tunnel. An evaporation pipe is wound on the surface of the water bag and a gap is formed between one circle of the surface of the water bag and the inner wall of the hydraulic tunnel; the water bag is filled with saline water; a refrigerant is injected into the evaporation pipe, and the evaporation pipe is connected with the refrigerating machine to form a closed circulation loop; when the system works, water in a gap between the surface of the water bag and the inner wall of the hydraulic tunnel freezes and forms a circle of annular tooth-shaped gap ice plug between the surface of the water bag and the inner wall of the hydraulic tunnel along with circulating flow of a refrigerant in the circulating loop, and water pressure is resisted through friction force between the gap ice plug and the inner wall of the hydraulic tunnel. Compared with a traditional hydraulic tunnel plugging method, the system can rapidly plug the hydraulic tunnel with low energy consumption.

The invention discloses a CO2-heavy salt water collaborative sealing device and sealing method, and relates to the technical field of crossing of unconventional oil and gas reservoir development and carbon sealing technology, a drilling structure extends to a fluid sealing storage layer from the earth surface in the vertical direction, and the part, located on the fluid sealing storage layer, of the drilling structure gradually inclines in the horizontal direction from top to bottom; the bottom end of the base extends in the horizontal direction; the casing pipe structure is arranged in the well drilling structure and extends synchronously with the well drilling structure, and a well cementation structure is arranged between the part, located above the fluid seal storage layer, of the casing pipe structure and the well drilling structure; the sleeve structure is located in the fluid sealing storage layer, and a liquid outlet is formed in the horizontally-extending part of the sleeve structure. The inner pipe structure is located in the sleeve structure, a gap is formed between the inner pipe structure and the sleeve structure, the bottom end of the inner pipe structure is located in the horizontally-extending part of the sleeve structure and provided with a gas outlet, and the problem that in the prior art, the absorption efficiency is low in the gas-liquid fluid mixing process, and consequently efficient fluid mixing cannot be achieved is solved.

The utility model discloses an intelligent low-salt salted duck egg rapid pickling device which comprises a data control box, a saline water stirring pool, a heat exchanger and a pickling room, the saline water stirring pool is communicated with a water source opening and is provided with a water inlet electromagnetic valve, and a saline water outlet of the saline water stirring pool is communicated with a saline water inlet of the heat exchanger through a first pipeline; a salt water conveying pump is installed on the first pipeline, a salt water outlet of the heat exchanger is communicated with a salt water inlet of the pickling room through a second pipeline, a salt water outlet of the pickling room is communicated with the salt water stirring pool through a salt water recycling pipe, and a salt water recycling pump is arranged on the salt water recycling pipe; a third pipeline is connected between the saline water recycling pipe and the first pipeline, a computer mainboard is installed in the data control box, and the computer mainboard is connected with the saline water stirring pool, electrical equipment in the pickling room and the heat exchanger.

The invention discloses a CO2-water-rock reaction process in-situ measurement system and a CO2-water-rock reaction process in-situ measurement method, and relates to the technical field of geochemical water-rock reaction. The system comprises a reaction kettle unit, a CO2 injection unit, a pure water / salt water injection unit and a data acquisition unit, the reaction kettle unit comprises a reaction kettle, a vacuum pump and a temperature control device, the reaction kettle is provided with a containing cavity, the vacuum pump is communicated with the containing cavity of the reaction kettle, the temperature control device is located outside the reaction kettle, the CO2 injection unit is communicated with the reaction kettle, the pure water / saline water injection unit is communicated with the reaction kettle, and the temperature control device is located outside the reaction kettle. The data acquisition unit comprises a light source, an optical fiber, a spectrum analyzer and a data acquisition and analysis device; the CO2-water-rock reaction monitoring system has the beneficial effects that real-time monitoring of the whole CO2-water-rock reaction process is realized, and the problem that the reaction process cannot be monitored in real time in the previous CO2-water-rock reaction is solved.

A marine propulsion system with a closed coolant loop is described. The marine propulsion system has a starboard heat exchanger and a port side heat exchanger that provides improved cooling and increases engine life compared with traditional open loop cooling systems, particularly in harsh environments such as salt water, brackish water, swamp, shallow or sediment and debris rich water. The two discrete heat exchangers are mounted to the lower unit of the marine propulsion system and also serve to improve hydrodynamic performance of the marine propulsion system.

The application discloses a kind of processes for continuously preparing high-purity electronic grade hydrogen peroxide, it is related to the technical field of hydrogen peroxide preparation, including the following steps: operator injects corresponding extraction liquid into equipment, then the oxidizing liquid in the oxidizing liquid tank and the high salt water of reverse osmosis mechanism are sent to the bottom of extraction tower body through pipeline, the extraction tower body is filtered by setting multiple groups of sieve plates and chelating resin discs inside the body to impurities in the extraction process, the liquid outlet valve and liquid inlet valve at the outer end of extraction tower body are connected with the corresponding purification tower body, reverse osmosis mechanism and oxidizing liquid tank around; the oxidizing liquid and high salt water from the bottom of extraction tower body enter the top of purification tower body by virtue of the difference in position. During the installation of sieve plate or filter element, directly pass through the circular limiting ring and multiple vertical guide grooves for clamping connection, to avoid the loosening of the connection between sieve plate and vertical guide groove due to repeated flushing of liquid during use.

The invention discloses a method for removing bromine ions in a salt water body. The method comprises the steps of pretreatment before electrolytic oxidation, primary precise directional electrolysis, primary split-pole separated air real-time air stripping, secondary precise directional electrolysis, secondary split-pole separated air real-time air stripping, deep removal of bromine ions Br <-> by a reverse osmosis membrane, separation of bromine carrier airflow containing Br2 and the like. According to the method, the problems of environmental friendliness, economical efficiency, relatively good adaptability, directivity of a bromine ion Br <-> removal standard and how to deeply remove the bromine ion Br <-> in the prior art can be solved, and the Br <-> in the salt water body can be reduced to 10 ppm or below; the unit operation in the process path is basically conventional operation or universal operation, and has a good engineering feasibility foundation and an economic feasibility foundation.

The invention relates to a preparation technology and application of a pickle hotpot condiment for pickling composite pickles in a soil jar, the pickle hotpot condiment is prepared from psoriasis, radishes, leaf mustard, cabbage heads, green and red capsicum frutescens, rod chilli, red capsicum frutescens, old ginger and cowpeas, the psoriasis, the radishes, the leaf mustard and the cabbage heads are hung and aired for 3-7 days, washed and primarily pickled with salt for 2-3 days, and primarily pickled pickles are obtained; and putting the primarily pickled pickles, green and red capsicum frutescens, rod chilli, red capsicum frutescens, old ginger and cowpea into a soil jar, adding pre-prepared saline water for pickling, controlling the storage temperature to be 16-20 DEG C, controlling the pickling time to be greater than or equal to 180 days, fermenting the pickles to obtain lactic acid bacteria, degrading nitrite to obtain probiotics, better releasing vitamins, and effectively retaining fibers in the pickles. The pickled psoriasis, the pickled radishes, the pickled leaf mustards and the pickled cabbage heads are applied to the pickled vegetable hotpot condiment, so that the pickled vegetable hotpot condiment which is unique in flavor, sour, fresh and delicious, suitable for people of all ages, healthy and delicious can be prepared without adding artificial pigments, essence or preservatives.

This invention relates to the field of agricultural biotechnology, specifically to... BnaC04.bZIP16 Application of genes in improving plant salt tolerance. This invention provides... BnaC04.bZIP16 The gene, whose sequence is shown in SEQ ID NO.1, and whose encoded protein sequence is shown in SEQ ID NO.2, is found in this invention to be highly expressed in wild-type Brassica napus after irrigation with salt water. BnaC04.bZIP16 Genes, and transgenic rapeseed overexpressing this gene, can grow better under salt stress conditions; knockout gene... BnaC04.bZIP16 The genetically modified rapeseed is more difficult to grow in salt-stressed environments, thus verifying... BnaC04.bZIP16 This gene plays a positive regulatory role in enhancing the salt tolerance of rapeseed and provides a key molecular tool for developing new rapeseed varieties with high salt tolerance. This gene has broad application potential and commercial value in the field of agricultural planting, especially in improving the salt tolerance of crops and breeding highly salt-tolerant transgenic crops.

The invention relates to the technical field of material performance testing, and discloses a multi-parameter simulation salt spray environment test system and method, and the system comprises a multi-parameter cooperative control module, a bionic fog drop generation and salt spray adjustment module, an energy recovery and resource circulation module, a salt spray environment adaptive compensation module, and a test data intelligent analysis module. The modules are in closed-loop communication through an industrial Ethernet; the method comprises the steps of test preparation, model initialization, dynamic simulation and compensation, energy resource circulation and data processing ending, specifically, a salt mist concentration-temperature-humidity-wind speed coupling model is constructed, uniform salt mist is generated through bionic atomization and electrostatic adsorption, self-adaptive compensation is achieved in combination with partition sensing and corrosion current detection, and the salt mist concentration-temperature-humidity-wind speed coupling model is obtained. And heat is recovered, and condensate water and non-atomized saline water are recycled. The problems of multi-parameter coupling interference, resource waste and low data value in the prior art are solved, the simulation precision and the resource utilization rate are improved, and the method is suitable for multi-field material corrosion resistance testing.

The invention provides an implementation method for strengthening freezing and monitoring in a shield butt joint freezing weak area, and relates to the technical field of shield butt joint engineering.The implementation method comprises the steps that the thickness of a freezing wall is determined, configuration parameters of freezing holes are determined according to the stratum freezing development rate, and the configuration parameters of the freezing holes are combined with excavation constraint conditions of an excavation area and the configuration parameters of the freezing holes; based on the arrangement parameters of the temperature measuring holes in the butt joint area, temperature measuring points are arranged in the temperature measuring holes in the butt joint area; temperature measuring lines and annular temperature measuring points are arranged to collect the temperature of the area between the slurry bin and the shield shell and the temperature of the structural face of the shield tunneling machine; and performing monitoring and early warning by using a preset monitoring system, and performing interaction of monitoring and early warning results with a user side. According to the method, partition real-time monitoring design is carried out on the frozen curtain according to the saline freezing reinforcement stratum condition of the shield butt joint project, especially freezing reinforcement design and monitoring design are carried out on the frozen weak area, and the safety of the frozen wall in the butt joint section structure thermal disassembly process is improved.

The invention discloses a salt spray test device for simulating a salt spray environment, and relates to the technical field of material analysis equipment. The device comprises a main box body, a box cover, an ultrasonic salt mist generating device, an axial flow fan, an airflow distributor, an airflow guide device, a salt mist metering device, a control device panel and the like, wherein the main box body is provided with an inner cavity and a top sealing water tank; an auxiliary box body is arranged on one side of the main box body, and the auxiliary box body is provided with an inner cavity and is communicated with the inner cavity of the main box body; the upper end of the auxiliary box body is provided with a sunken saline water tank for storing saline water; the bottom of the ultrasonic salt mist generating device is communicated with the salt water tank through a conduit. Through the innovative structure, many problems of a traditional test are solved, salt mist distribution is optimized, and uniformity is ensured; temperature and humidity are accurately controlled, and simulation is more real; an ultraviolet light source is introduced, the illumination period is precisely regulated and controlled, and the device fits the natural environment; the corrosion resistance of the material can be comprehensively and accurately evaluated, reliable test support is provided for research, development and application of the material, and product quality and reliability are improved.