224 results about "Toxic chemical" patented technology

The invention belongs to the technical field of water treatment, and discloses a green and environment-friendly pH-responsive corrosion inhibitor as well as a preparation method and application thereof. The corrosion inhibitor comprises the following raw materials in parts by mass: 25-30 parts of green tea polyphenol, 10-15 parts of graphene oxide nanosheets, 15-25 parts of pH response type polymer corrosion inhibition microcapsules, 5-10 parts of a beta-cyclodextrin / corrosion inhibition salt inclusion compound, 5-10 parts of an amino acid derivative polymer, 3-5 parts of a thickening agent, 180-450 parts of a solvent, and an antioxidant accounting for 0.01-0.05% of the total mass of the raw materials. And a pH regulator is added to regulate the pH of the corrosion inhibitor to 7-8. According to the corrosion inhibitor, plant extracts and non-toxic chemical substances are adopted as main components, the requirements of environment-friendly materials are met, and under the synergistic effect of all the components, the corrosion inhibitor can keep stable in a high-temperature, oxygen-containing and high-salinity environment, and anti-corrosion protection can be provided for a long time.

The invention provides a preparation method of an environment-friendly preservative for preparing a dog fur specimen, and belongs to the field of animal specimen preparation. According to the preservative, natural plant extracts are combined with low-toxicity chemical components, so that the original color and form of a specimen can be kept, and excellent corrosion resistance, mildew resistance and worm damage resistance are provided. Compared with a traditional formaldehyde preservative, the preservative disclosed by the invention has the advantages of low toxicity, small smell, safety in operation and the like, and is suitable for long-term preservation of marine animal specimens in museums, scientific research institutions and related units.

The utility model relates to the technical field of chemical pipeline dismantling, and discloses a chemical pipeline dismantling fracture plugging mechanism which comprises a sleeving cylinder, an automatic telescopic rod is fixedly arranged on the inner wall of the sleeving cylinder, a telescopic ring is fixedly arranged at the output end of the automatic telescopic rod, and a sliding block is arranged on the surface of the sleeving cylinder in a sliding mode. The telescopic ring is driven by the automatic telescopic rod to stretch out and draw back automatically, so that chemical pipelines with different diameters can be connected in a sleeved mode through the telescopic ring, an outlet of the telescopic ring is sealed through movement of a sponge layer and a movable cylinder, toxic chemical substances can be adsorbed through an activated carbon layer, and therefore the chemical pipelines with different diameters can be sealed. And the cover plate can be detached through rotation, then the sponge layer and the carbon adsorption layer can be detached and replaced, drifting of toxic chemical substances can be reduced, the atmospheric environment is protected, the overall structure is simple, operation is easy and convenient, and high practicability is achieved.

The invention belongs to the technical field of functional food processing, and particularly relates to a method for synergistically improving functional characteristics by utilizing casein peptide and hydroxytyrosol self-assembly. According to the research, casein peptide with an excellent antioxidant function is used as a raw material, and hydroxytyrosol is added to be self-assembled with the casein peptide, so that the antioxidant activity is synergistically improved in an in-vitro digestion stage. Compared with a traditional protein and polyphenol combination technology, the casein peptide and polyphenol self-assembly method is provided, the antioxidant activity after digestion is improved, no toxic chemical reagent is introduced or added, and the casein peptide and polyphenol self-assembly method is safer, more efficient, more environmentally friendly and more sustainable. The method can be widely applied to functional food or health care products.

The invention belongs to the technical field of functional food processing, and particularly relates to a method for regulating peptide flavor and digesting characteristics by utilizing casein peptide and polyphenol self-assembly. According to the research, the casein peptide with good GABA-T inhibitory activity is taken as a raw material, and ferulic acid is added to be self-assembled with the casein peptide, so that the bitter taste of the casein peptide is reduced, and the GABA-T inhibitory activity of the casein peptide is improved in an in-vitro digestion stage. Compared with a traditional zymolyte debitterizing method, the method has the advantages that the biological activity of peptide is reserved, no toxic chemical reagent is introduced or added, and the method is safer, more efficient, more environmentally friendly and more sustainable. The method can be widely applied to functional food or health care products.

A pre-stressed pultruded glass fiber reinforced thermoplastic lumber suitable for demanding construction environments, particularly marine and outdoor applications, features a solid core composed of a thermoplastic, such as PVC, blended with 15% to 40% by weight of pelletized chopped strand glass fibers. Pre-tensioned elongated continuous fiber reinforcements are embedded within and coextensive with this core via pultrusion. The presence of pelletized and fragmented glass fibers within the core enhances the mechanical coupling between the core and the continuous reinforcements, facilitating the transfer of tensile stress to the core as compressive pre-stress. An outer co-extruded cap stock provides protection against UV and IR radiation and enhances impact resistance. The resulting lumber exhibits a high modulus of elasticity (exceeding 800,000 psi), at least 60% fiber length retention, improved durability, and resistance to common wood degradation factors without the use of toxic chemicals.

The invention discloses starch-collagen composite hydrogel as well as a preparation method and application thereof. Collagen is catalyzed by microbial transglutaminase to form a covalent cross-linked network, and meanwhile, hydroxypropyl starch is introduced to construct a physical interpenetrating network through molecular chain penetration and hydrogen-bond interaction; and chondroitin sulfate is further integrated to strengthen the network structure and biological activity through electrostatic interaction. The method is mild in condition and does not need a toxic chemical cross-linking agent, the obtained composite hydrogel has an interpenetrating double-network structure and has excellent mechanical properties, enzymatic degradation resistance and cell affinity, the compression modulus of the composite hydrogel is remarkably improved, the composite hydrogel can keep structural stability for a long time in a collagenase environment, cell adhesion and proliferation can be effectively promoted, and the composite hydrogel has a good application prospect. The hydrogel can be widely applied to tissue engineering scaffolds, wound dressings, drug sustained-release carriers and cartilage repair materials.

The present invention relates to an additive that comprises compounds of plant and mineral extracts, useful in recirculating aquaculture system that will significantly improve efficiency of the biofilter used in said systems, thus reducing the levels of toxic chemicals such as ammonium and nitrite. Furthermore, this additive will also reduce oxygen consumption and provide better overall water quality conditions. This implies an improvement in the efficiency of these systems, thus achieving farming of different fish species with lower mortality, better feed conversion, and growth rate.

The invention belongs to the technical field of extraction and separation, and relates to a method for separating protein, grease and chitin of hermetia illucens larvae and application. The invention provides a method for separating protein, grease and chitin from hermetia illucens larvae, which comprises the following steps: mixing monobasic organic acid, binary organic acid, ternary organic acid and an alcohol compound, and heating in a water bath to obtain an ionic solution; the hermetia illucens larvae are smashed, dried and then placed in the ionic solution, the mixture is divided into three layers after being heated in a water bath, the upper-layer substance is grease, the middle-layer substance is the ionic solution containing protein, and the lower-layer substance is chitin and inorganic salt; the upper-layer substance, the middle-layer substance and the lower-layer substance are separated, the upper-layer substance is grease, the middle-layer substance is taken and separated to obtain protein, and the lower-layer substance is taken and inorganic salt is removed to obtain chitin. According to the separation method provided by the invention, the use of toxic chemical solvents is avoided, so that the hermetia illucens larvae are fully recycled.

The utility model relates to a toxic chemical wastewater advanced treatment recycling device in the technical field of chemical wastewater treatment, which comprises a treatment tank, the top end of one side of the treatment tank is communicated with a liquid inlet pipe for introducing wastewater into the treatment tank, and the top of the treatment tank is provided with an oxidant material box for containing an oxidant. According to the utility model, the plurality of filter screens for filtering water are arranged on the outer wall of the vertical pipe, so that oxidation products in wastewater flowing into the vertical pipe can be filtered out through the filter screens, and liquid passes through the filter screens to move to the top of the water baffle and is finally discharged through the liquid discharge pipe; oxidation products filtered by the filter screen can fall into the sludge containing cavity under the action of self gravity to realize solid-liquid separation, and the rotating column can drive the sludge containing cavity to rotate, so that the oxidation products in the sludge containing cavity can be poured into the bottom end of the interior of the treatment tank, and the oxidation products can be taken out on the premise that the machine is not stopped; and the wastewater treatment efficiency of the device is ensured.

The application relates to a method for one-step synthesis of strong magnetic hydrophobic Fe3O4 nanoparticles at low temperature and the Fe3O4 nanoparticles and application, and belongs to the technical field of nano material preparation. The method comprises the following steps: adding a ferrous sulfate solution into a mixed solution of sodium hydroxide and sodium nitrate, heating and stirring to react, adding oleic acid in the reaction process, and obtaining black Fe3O4 crystals after the reaction is completed. The saturation magnetization of the obtained strong magnetic hydrophobic Fe3O4 nanoparticles can reach 85.69 emu / g at most, and the water contact angle can reach 148.95 DEG. The one-step synthesis reaction only needs to use oleic acid as a regulator, avoids an extreme high-temperature and high-pressure environment, does not need to use a toxic chemical solvent, the condition is mild, the process is simple, the operation condition is easy to control, and the method has a wide application prospect.

The invention relates to the technical field of plant polysaccharides, and particularly discloses a red-knees herb polysaccharide and a preparation method and application thereof, the peak top molecular weight of the red-knees herb polysaccharide is 33.9 KDa, the weight-average molecular weight of the red-knees herb polysaccharide is 42.8 KDa, the number-average molecular weight of the red-knees herb polysaccharide is 10.0 KDa, and the red-knees herb polysaccharide is mainly composed of galacturonic acid, galactose, arabinose, rhamnose and glucuronic acid. According to the preparation method of the red-knees herb polysaccharide, by optimizing process parameters and controlling the reasonable solid-liquid ratio, heating temperature and heating time, the dissolution rate of the polysaccharide is increased, the dissolution rate of impurities is reduced, and the yield of the red-knees herb polysaccharide is increased. The red-knees herb polysaccharide is used as a raw material, ethanol is used for alcohol precipitation, polysaccharide components are precipitated, impurities are preliminarily removed, then macroporous resin is used for purification, the recovery rate of polysaccharide and the removal rate of impurities such as pigment and protein are improved by screening optimization and pretreatment of the macroporous resin, and the total sugar content of the purified red-knees herb polysaccharide is 80% or above. Use of toxic chemical reagents is avoided, and the preparation method is safe and efficient.

The invention discloses a biological enhancement treatment method for eucalyptus chemimechanical pulp high-concentration wastewater, and belongs to the technical field of toxic chemimechanical pulp high-concentration wastewater treatment. According to the method, the eucalyptus chemimechanical pulp high-concentration wastewater is taken as a treatment object, the biodegradability of the wastewater is improved through biological detoxification treatment, low-oxygen treatment is carried out after anaerobic treatment, organic pollutants are degraded under a low dissolved oxygen condition, and aerobic biological enhancement treatment and deep treatment are carried out through a short process, so that the removal rate of chemical oxygen demand is improved. According to the method disclosed by the invention, the biological detoxification tank is arranged before anaerobic treatment, and the toxicity-resistant microbial flora is screened and domesticated, so that refractory organic matters and antibacterial components in the eucalyptus chemithermomechanical pulp wastewater are treated, toxicity in the wastewater is removed, and the biodegradability of the wastewater is improved, so that the efficiency of subsequent biological treatment is optimized; compared with traditional long-time aerobic treatment, the treatment method disclosed by the invention has the advantages that most pollutants can be removed with lower energy consumption, and the energy consumption in the aerobic treatment process is effectively reduced.

The invention provides a composition containing arbuscular mycorrhizal fungi (AMF) and charcoal and application of the composition in improvement of cadmium tolerance of tobacco and / or improvement of soil, and belongs to the technical field of biological agriculture. The AMF is combined with the biochar to be applied, so that the growth of the tobacco can be effectively promoted, the agronomic traits and biomass of the tobacco can be improved, meanwhile, the resistance of the tobacco to cadmium can be effectively improved, cadmium accumulation in the tobacco is effectively reduced, subcellular distribution of cadmium in the tobacco body is changed, and high-toxicity chemical-state cadmium is converted into toxic or low-toxicity cadmium; the soil environment and nutrients can be improved, the antioxidant enzyme activity can be regulated, and a better soil environment is provided for the growth of the tobacco.

The invention belongs to the crossing field of biomedical engineering, material science and tissue engineering, and discloses multifunctional hydrogel capable of switching mechanical and adhesive properties based on temperature triggering as well as a preparation method and application of the multifunctional hydrogel. The water-based adhesive is prepared from acrylic acid, gelatin, hexadecyl trimethyl ammonium bromide, silver nanoparticle-loaded polydopamine nanoparticles and water. According to the present invention, the good adhesion property and the good mechanical property are provided for the skin tissue, the mechanical property and the adhesion property can be switched, and the adhesion property durability and the adhesion property repeatability are achieved. The temperature-triggered hydrogel prepared by the method has the advantages of simple process, low cost and no introduction of toxic chemical substances, can achieve the effects of tight fitting at body temperature and natural falling at low temperature according to the driving of temperature, still has excellent adhesion performance in a complex environment, and promotes the development of intelligent medical multifunctional wound dressings.

The invention discloses a nanofiber based on a polypeptide derivative and an enzymatic self-assembly method and application of the nanofiber based on the polypeptide derivative, the sequence of the polypeptide derivative is Nap-Gly-Phe-Phe-pTyr-Lys-Trp-Tyr-Gln-Asn-Met-Ile-Arg, and the Gly-Phe-Phe-pTyr is of an L configuration or a D configuration. The self-assembled polypeptide derivative disclosed by the invention contains an alkaline phosphatase restriction enzyme cutting site, and the self-assembled polypeptide derivative is self-assembled at a specific part with high enzyme specificity expression through enzyme catalysis to form nanofibers. The nanofiber hydrogel obtained through enzymatic treatment is carried out under physiological conditions, high temperature or ultraviolet irradiation is not needed, damage of high temperature to bioactive substances is avoided, the nanofiber hydrogel is more suitable for a temperature-sensitive in-vivo environment, toxic chemical cross-linking agents or photoinitiators do not need to be introduced, the cytotoxicity of the material is remarkably reduced, active enzymes or drugs can be embedded in situ, and the nanofiber hydrogel can be used for in-situ treatment. The biological function is maintained.

The invention relates to the field of molecular biology, and discloses an SNP molecular marker set for identifying the variety of Chinese pears, the SNP molecular marker set is a specific SNP molecular marker set, the specific molecular marker set comprises 30 SNP markers, the invention also provides a KASP primer combination for amplifying the SNP molecular marker set, the KASP primer combination is composed of detection primers of the 30 SNP sites, and the KASP primer combination is used for amplifying the variety of Chinese pears. The specific primer for detecting each SNP site is composed of two forward primers and one reverse primer. The method has the following advantages and effects that compared with a variety identification technology based on field trials, the latest SNP marking technology and KASP genetic typing technology for international variety identification are not influenced by human subjectivity, climate environment and seasons; compared with an SSR molecular marker, the result is more accurate, the detection process is more convenient, and toxic chemical reagents such as acrylamide are not needed. The method makes up the blank of identifying the Chinese pear variety based on the SNP marker technology, and can be effectively used for Chinese pear variety DNA fingerprint database construction and rapid variety identification.

A process for the rapid fabrication of a sorbent hollow fiber membrane (HFM) with a very high metal organic framework (MOF) content as well as the apparatus to contain such fibers for the purposes of sequestering and separating chemicals is described. Herein we developed a process to rapidly prototype meters long HFM batches with a high MOF content for sequestering and filtration. The HFM produced herein can be tailored to precisely sequester chemical of a hazardous nature which may include chemical warfare agents (CWA) or toxic industrial chemicals (TIC). The HFM are comprised of a polymer-based material that includes a polymeric binder; and one or more porous active materials that adsorb, chemisorb, decompose, or a combination thereof, a hazardous chemical.

The invention provides a water evaporation power generation device based on an MXene / filter paper composite film and a preparation method, and belongs to the technical field of water evaporation power generation. The preparation method comprises the following steps: adding FeCl2. 4H2O or FeSO4. 7H2O and ascorbic acid into a mixed solution of ethylene glycol and water, and stirring under a water bath condition to obtain an etching solution; slowly adding MAX powder into the etching solution, and carrying out magnetic stirring etching reaction to obtain a product solution; performing centrifugation, suction filtration and drying treatment on the product solution to obtain MXene solid powder; dissolving the solid powder in deionized water to form a solution, and carrying out suction filtration treatment on the solution on filter paper to obtain an MXene / filter paper composite film; the conductive parts are connected to the upper end and the lower end of the MXene / filter paper composite film, the water evaporation power generation device is obtained, the MXene stripping process is simple, the subsequent complex treatment process is not needed, and strong acid and virulent chemicals are not contained.

The invention provides a stepped directional extraction method of fucoidan, and relates to the technical field of extraction of active ingredients of algae. The method comprises the following steps: pretreating brown algae powder by microwaves and ultrasonic waves, mixing the pretreated brown algae powder with a deep eutectic solvent, and carrying out ultrasonic extraction to obtain algin; the eutectic solvent is composed of choline chloride and lactic acid according to the molar ratio of 1: (1-3). According to the method disclosed by the invention, a microwave-ultrasonic synergistic wall-breaking coupling deep-eutectic solvent extraction process is adopted, so that the yield of algin is increased to 73.2%, meanwhile, an additional toxic chemical chelating agent does not need to be added, the effect of effectively adsorbing heavy metal ions is achieved, and the biological safety and commercial value of the product are greatly improved.

The process for producing and using polymeric Hydrocells for production of atmospheric water using a superabsorbent polymer derived from alkaline hydrolysis of the polyacrylonitrile (PAN). The Hydrocell adsorbs up to 80% of its weight in atmospheric water under ambient conditions and releases this water when heated to less than 100° C. using renewable energy sources, such as solar energy. This low-temperature operation allows for repeated adsorption and desorption cycles lasting years without degradation. Multiple Hydrocells can be arranged into Hydrobatteries with a surface area greater than 2 m2, capable of adsorbing several kg of water per day. The Hydrocells offer a sustainable and safe solution for producing potable water free of toxic chemicals and pathogenic microorganisms in regions with limited water resources. By drawing water from the vast atmospheric reservoir containing over 13,000 km3, this can help prevent deaths caused by the consumption of contaminated water.

The application discloses an injectable microsphere gel of controllable performance silk protein and a preparation method thereof, and belongs to the field of biomaterials.The preparation method comprises the following steps: preparing a regenerated silk protein solution, including degumming, dissolving and purifying of mulberry silk, and obtaining a regenerated silk protein solution with a target molecular weight through molecular weight screening; preparing a silk protein microsphere aqueous solution by adding ethanol to the regenerated silk protein solution and performing freezing and thawing; obtaining a silk protein microsphere redispersible powder by drying two solutions prepared in the above steps; and preparing a silk protein microsphere gel by dispersing the silk protein microsphere redispersible powder in a solvent and adding a gel inducer.The whole preparation process does not involve toxic chemical reagents, and thus the excellent mechanical properties, ideal biocompatibility and biodegradability of the material are ensured; the silk protein microsphere gel has thixotropy, can be injected into subcutaneous tissue through a syringe, has a certain self-supporting property after injection, has controllable mechanical properties due to the molecular weight screening, and can be used in different application scenarios.

The invention relates to an environment-friendly process method for improving the surface metal cleaning efficiency of a silicon wafer, and belongs to the technical field of semiconductor silicon wafer processing, and the process method comprises the following operation steps: S1, pre-cleaning and activation: placing the silicon wafer in a first cleaning tank, introducing ozone into ultrapure water, and processing in cooperation with low-frequency ultrasound; and S2, main cleaning and complexing: placing the silicon wafer subjected to pre-cleaning and activating treatment in a second cleaning tank, and treating the silicon wafer in a dilute citric acid solution in cooperation with high-frequency ultrasound. And S3, overflow rinsing: placing the silicon wafer subjected to main cleaning and complexing treatment in a third cleaning tank. And S4, drying: carrying out drying treatment on the silicon wafer subjected to the overflow rinsing treatment. Through the synergistic effect of physical stripping, chemical oxidation and complexing dissolution, under the condition that highly toxic chemicals such as hydrofluoric acid are not used, the cleanliness of metal on the surface of the silicon wafer reaches the ppt level, and the problems that traditional RCA cleaning is serious in environmental pollution and high in operation risk are effectively solved.

The invention belongs to the technical field of synthesis of pesticide intermediates, and discloses a preparation method and application of indazole carboxylic acid. The preparation method of the indazole carboxylic acid comprises the following steps: (1) cyanation reaction: reacting a brominated indazole compound with cuprous cyanide in an organic solvent in a protective gas atmosphere to obtain a cyano indazole compound; and (2) hydrolysis reaction: hydrolyzing the cyano indazole compound prepared in the step (1) to obtain indazole carboxylic acid. The preparation method disclosed by the invention is mild in condition, low in cost, safe to operate and environment-friendly. The use of highly toxic chemical raw materials and expensive raw materials is avoided, and the yield of the target product is high.

This invention belongs to the interdisciplinary field of biomedical engineering, materials science, and tissue engineering, and discloses a multifunctional hydrogel with switchable mechanical and adhesive properties based on temperature triggering, its preparation method, and applications. The invention consists of acrylic acid, gelatin, hexadecyltrimethylammonium bromide, polydopamine nanoparticles loaded with silver nanoparticles, and water. This invention not only exhibits excellent adhesion and mechanical properties to skin tissue but also possesses switchable mechanical and adhesive properties, achieving durable and repeatable adhesion. The temperature-triggered hydrogel prepared by this invention is simple to process, low in cost, and introduces no toxic chemicals. It can achieve a close fit at body temperature and natural detachment at low temperatures, driven by temperature, and maintains excellent adhesion properties even in complex environments, thus promoting the development of intelligent medical multifunctional wound dressings.

The application discloses a kind of positive charge biomass carbon dots and preparation method and application thereof, belong to biomass carbon dot technical field.The application provides a kind of method for preparing nanoscale biomass carbon dots with positive charge using agricultural waste-tomato seedling, and the preparation method is simple and easy to operate, and the equipment requirement is low, material source is extensive, cheap and easy to obtain, no toxic chemical reagent is used, and it is environment-friendly, and the preparation cost is low;A new way for high-value utilization of tomato seedling is provided;The biomass carbon dots prepared are approximately spherical in shape, uniform in size, well dispersed, and have no aggregation phenomenon, with an average diameter of 10 nm and an average potential of +42.03 mV;Good hydrophilicity, strong stability;With blue, green, red and other fluorescent properties.

A system for removing toxic chemicals from Refined Bleached Deodorized Oil (RBDPO), comprising: a treatment section comprising a sorbent for removing toxic chemicals from the RBDPO; a regeneration section for separating the treated RBDPO from the adsorbent, thereby regenerating the adsorbent; wherein the adsorbent comprises a material functionalized with a silane coupling agent such that when a toxic chemical from the RBDPO contacts the functionalized adsorbent, a chemical bond is formed between the toxic chemical and the adsorbent, thereby enabling separation of the toxic chemical from the RBDPO and subsequent removal of the toxic chemical from the RBDPO. A process is also disclosed herein.

This invention discloses a diatomaceous earth-based graphene composite aerogel, its preparation method, and its applications. The preparation method includes: preparing a graphene oxide dispersion; pretreating unmodified natural diatomaceous earth; mixing the graphene oxide dispersion with the pretreated diatomaceous earth and then performing a hydrothermal reaction to obtain a hydrogel; freeze-drying the hydrogel to obtain an aerogel precursor; and annealing under an inert atmosphere to obtain the target aerogel. This invention uses unmodified natural diatomaceous earth, avoiding the surface modification steps in traditional processes, simplifying the preparation process, and reducing production costs. Combined with annealing, it eliminates the need for toxic chemical reducing agents, making the process green and environmentally friendly. The resulting composite aerogel possesses both lightweight and structurally stable properties, showing promising application prospects in water treatment, thermal insulation, and electrochemical energy storage.

The invention relates to the technical field of organic synthesis, and provides a preparation method of 3-methoxy-4, 5-methylenedioxy phenylethylamine. According to the invention, myristic aldehyde and diethyl cyano phosphate are adopted as initial raw materials, and the 3-methoxy-4, 5-methylenedioxy phenylethylamine is prepared through wittig reaction, reduction reaction, hydrolysis reaction and Hofmann reaction. According to the preparation method provided by the invention, each step is simple and convenient to operate, the product yield is high (the total yield is 78.3%-84.2%), and the purity is high; furthermore, the preparation method provided by the invention is mild in reaction condition, does not need explosive and highly toxic chemicals, does not need column chromatography purification of products in each step, and is suitable for industrial production.

The invention relates to the technical field of demineralized water preparation, and discloses a demineralized water treatment system which comprises a deoxidizing device, one end of the deoxidizing device is communicated with a demineralized water supply pipeline, the other end of the deoxidizing device is communicated with a demineralized water storage part, a mixing cavity and a separation cavity are formed in the deoxidizing device, and a mixing assembly is installed in the mixing cavity; the inner diameter of the separation chamber is not smaller than that of the mixing chamber; the nitrogen supply equipment is communicated with the inlet end of the deoxidizing equipment through a nitrogen supply pipeline, and the nitrogen supply equipment is suitable for continuously conveying pressurized nitrogen to the inlet end of the deoxidizing equipment. Under the action of the mixing assembly, the nitrogen and the demineralized water are fully mixed, so that oxygen in the demineralized water is discharged. According to the desalted water treatment system, gas mixing exchange is used for replacing a high-energy-consumption steam thermal deoxidizing device, highly toxic chemical reagents such as hydrazine do not need to be added, the operating cost of drugs and the like is reduced, the system is friendly to workers and the environment, the system is simple, and the labor intensity and the influence of human factors are reduced.