91 results about "Sodium hypochlorite solution" patented technology

The invention relates to the field of fine chemical engineering, and discloses a green process for preparing chloramine T by a continuous flow reactor. The method comprises the following steps: respectively pumping p-toluenesulfonamide, a sodium hydroxide solution and a sodium hypochlorite solution into a micro-channel mixer for instantaneous mixing, and carrying out chlorination reaction in a multi-stage temperature control tubular reaction unit; the concentration of free chlorine is detected on line at an outlet, and the flow rate of a chlorine source is dynamically adjusted through a PID algorithm, so that closed-loop control is realized; the reaction liquid is directly crystallized and separated to obtain the product without alkali wash. The system comprises a base solution and chlorine source conveying subsystem, a micro-channel mixer, a multi-stage reaction unit, an online monitoring module, a central controller and a crystallization unit. The side reaction is inhibited from the source, so that the free chlorine is less than or equal to 0.5 mg / L, the alkali washing step is omitted, the COD (Chemical Oxygen Demand) of the wastewater is reduced by more than 80%, the product purity is more than or equal to 99.5%, and the productivity is improved by 3 times.

The invention relates to the field of hydrazine hydrate, in particular to an efficient and green hydrazine hydrate synthesis method. The efficient and green hydrazine hydrate synthesis method comprises the following steps: mixing chlorine, sodium hydroxide and water, and reacting to obtain a sodium hypochlorite solution; the method comprises the following steps: mixing a sodium hypochlorite solution, urea and a catalyst, and reacting to obtain hydrazine hydrate, tail gas and a byproduct; and tail gas and by-products are recovered. Through mechanism-driven process design, high efficiency, greenization and economy of hydrazine hydrate synthesis are realized, and a sustainable solution is provided for industrial application.

The invention relates to the technical field of chemical synthesis, and discloses a method for preparing 2, 5-furandicarboxylic acid, which comprises the following steps: dispersing cobalt nitrate and nickel sulfate into an aqueous solution of polyvinylpyrrolidone at room temperature; adding a sodium borohydride solution to obtain nano colloid; preparing an aqueous suspension of cerium oxide, and adding the aqueous suspension into the nano colloid; centrifugally filtering, and recovering a solid product; washing the solid product; centrifuging, putting solid powder obtained after centrifuging into a drying oven, and drying; and calcining and grinding the solid powder to finally prepare the Co-Ni / CeO2 catalyst. And dissolving 5-hydroxymethylfurfural in water at normal temperature, adding the prepared Co-Ni / CeO2 catalyst and a sodium hypochlorite solution, reacting, and filtering to remove the catalyst, thereby obtaining the 2, 5-furandicarboxylic acid. The method disclosed by the invention has the advantages of no use of strong base, low reaction temperature, short reaction time, few byproducts, greenness and sustainability.

The invention provides a method for harmlessly discharging high-salt flowback liquid wastewater and producing a byproduct sodium hypochlorite, and relates to the field of wastewater recycling. The method comprises the following steps: mixing high-salt flowback fluid wastewater with a liquid gel breaker, and carrying out micro-nano bubble aeration treatment to obtain gel-broken viscosity-reduced wastewater; the method comprises the following steps: mixing gel-breaking viscosity-reducing wastewater with a sodium-containing impurity removal agent A, and reacting to obtain primary hardness and impurity removal clear liquid; mixing the primary hardness and impurity removal clear liquid with alkali liquor, and performing ozone nano-bubble treatment to obtain organic matter removal clear liquid; mixing the organic matter removal clear liquid with a sodium-containing impurity removal agent B, and reacting to obtain secondary hardness and impurity removal clear liquid; and filtering the secondary hardness and impurity removal clear liquid through activated carbon, evaporating and concentrating to obtain a sodium chloride solution, and electrolyzing the sodium chloride solution to obtain a sodium hypochlorite solution. According to the method, chloride ions are converted into the sodium hypochlorite solution, and resource utilization is achieved; the treatment pressure of the high-salt flowback fluid can be effectively relieved, and an effective way is found for resource utilization of the high-salt calcium wastewater.

This invention relates to the field of automatic control technology, specifically to a method for stabilizing and controlling the effective chlorine content of sodium hypochlorite solution. During the cooling stage of the sodium hypochlorite solution, an online electrochemical sensor acquires the concentration signal of free trace metal ions in the solution. When the signal reaches a preset threshold of the controller, the controller instructs a peristaltic pump to add a compound stabilizer to the solution. The compound stabilizer is prepared by mixing a specific short peptide containing cysteine ​​and histidine with a silicate buffer solution. After adding the compound stabilizer, the solution undergoes short-term ultrasonic cavitation treatment. This method uses a specific short peptide instead of traditional aminopolycarboxylate salts, avoiding the breaking and failure of carbon-nitrogen bonds under strong oxidizing conditions, preventing secondary release of metal ions that could trigger catalytic decomposition, extending the effective chlorine half-life, and reducing the amount of chlorate byproducts generated.

The invention belongs to the technical field of sodium hypochlorite preparation, and provides a hydrogen-free sodium hypochlorite preparation system and a sodium hypochlorite preparation technology.The sodium hypochlorite preparation system comprises a brine electrolysis device, and a liquid inlet of the brine electrolysis device communicates with a pipeline mixer through an electrolyte conveying pipeline; a liquid inlet of the pipeline mixer is respectively communicated with a saturated salt water preparation device and a saturated salt water dilution device, a liquid outlet of the salt water electrolysis device is communicated with a sodium hypochlorite storage tank through a sodium hypochlorite conveying pipeline, and a liquid outlet of the sodium hypochlorite storage tank is communicated with a metering and adding device; the brine electrolysis device comprises an air cathode electrolytic cell and a rectification power supply, the air cathode electrolytic cell comprises a cell body, the cell body is provided with a containing cavity for containing electrolyte, and an anode and a cathode which are electrically connected with the rectification power supply are fixedly installed on the cell body. According to the method, the sodium hypochlorite solution is prepared efficiently and safely, no hydrogen is generated in the electrolysis process, the operation safety is remarkably improved, and the method is safer and more environmentally friendly.

The invention provides a method for removing heavy metals in wastewater containing heavy metal complexes, which comprises the following steps: acidizing the wastewater containing the heavy metal complexes until the pH value is less than 7.0, mixing the wastewater containing the heavy metal complexes with reduced iron powder and a sodium hypochlorite solution, carrying out catalytic oxidation reaction for decomplexing, and then carrying out precipitation treatment to remove the heavy metals. According to the method for removing the heavy metals in the wastewater containing the heavy metal complexes, the heavy metals in the wastewater containing the heavy metal complexes are efficiently removed, the removal efficiency can reach 85% or above, the sludge yield is obviously reduced, the slag rate can be reduced to 2.2% or below, and the method is simple in technological process, environmentally friendly and low in cost.

The utility model discloses sewage treatment integrated equipment. Comprising a box body, and an equipment chamber and a reaction chamber are arranged in the box body; ozone generation equipment, a sodium hypochlorite solution storage tank and control equipment are arranged in the equipment chamber; the interior of the reaction chamber is divided into an ozone reaction chamber and a chlorination reaction chamber which are communicated end to end through a partition plate; a raw water distribution pipe and an ozone solution distribution pipe are arranged at the head of the ozone reaction chamber; a sodium hypochlorite solution water distribution pipe is arranged at the head part of the chlorination reaction chamber, and a water drainage pipe is arranged at the tail part of the chlorination reaction chamber; a water outlet of the ozone dissolved air tank is communicated with an ozone solution water distribution pipe through a pipeline; and the sodium hypochlorite solution distribution pipe is communicated with the sodium hypochlorite solution storage tank through a pipeline. According to the utility model, a combined process of ozone oxidation and sodium hypochlorite oxidation is adopted, so that sewage containing more ammonia nitrogen and organic matters in the chemical industry park can be efficiently treated.

The invention relates to the technical field of wastewater treatment, in particular to an acetylene production wastewater recovery process which comprises the following steps: S1, collecting waste sodium hypochlorite liquid generated in an acetylene cleaning process and cooling wastewater generated in an acetylene cooling tower according to an actual yield ratio, pumping into a regulating tank, and homogenizing water quality and water quantity; according to the method, more than 90% of dissolved acetylene in the wastewater is efficiently recovered through micro-negative pressure desorption, resource utilization is realized, secondary phosphorus and phosphorous which are difficult to degrade are thoroughly converted into positive phosphorus through Fenton oxidation, and the total phosphorus concentration is reduced to 0.5 mg / L or below in combination with neutralization and flocculation, so that the first-grade discharge standard is met, and the method is suitable for industrial production. The pH value of the purified water is finely adjusted to 10-11, then the purified water is used as a dilution carrier to be compounded with the sodium hypochlorite working solution, and the pH value after mixing is ensured to be always greater than 9.5, so that the pH dangerous interval is fundamentally avoided, the chloroacetylene explosion hidden danger is remarkably eliminated, the safety of the whole process is improved, the whole process forms a closed cycle, and the treated water is used for completely replacing fresh water to prepare the working solution.

The application provides a synthesis method of 9,10-dibromoanthracene, by introducing HBr generated by a solvent water adsorption reaction, using an industrial sodium hypochlorite solution to react the HBr into bromine, ensuring high concentration of bromine, introducing a solvent dichloroethane to uniformly disperse raw materials, keeping the concentration of bromine stable in the reaction, greatly promoting the reaction speed, greatly shortening the reaction time, and converting the sodium hypochlorite into a sodium chloride aqueous solution after the reaction is completed. The purity of the prepared 9,10-dibromoanthracene is more than 99%, and the by-products generated in the reaction are environment-friendly and non-polluting.

The application provides a method for promoting Talaromyces cucurbitiradicus to utilize ethanol to produce PHA by activated carbon, and belongs to the technical field of bio-chemical industry.The method comprises the following steps: adding ethanol, a nitrogen source and buffer salt into water to prepare a fermentation substrate, then inoculating Talaromyces cucurbitiradicus into the fermentation substrate, adding activated carbon and uniformly dispersing, fermenting the obtained fermentation liquid, filtering, treating the obtained fermentation liquid with sodium hypochlorite solution, filtering, dispersing the obtained wet filter cake with chloroform, then adding methanol or ethanol to precipitate PHA, filtering, and obtaining PHA solid.The method can significantly strengthen the metabolic ability and PHA accumulation ability of Talaromyces cucurbitiradicus by adjusting the adding amount of activated carbon and setting a nutrition limiting condition, so that the high-efficiency utilization of ethanol carbon source and the high-level accumulation of PHA are realized.

The application discloses a kind of breathable far infrared fiber fabric and preparation method thereof, it is related to fiber fabric technical field.The application is prepared when breathable far infrared fiber fabric, phosphorus-containing triamino compound is reacted with double bond modified silane, hydroxypropyl methacrylate, 2-[2-hydroxy-5-[2-(methacryloyloxy) ethyl] phenyl]-2H-benzotriazole to obtain modified liquid;Pre-modified graphene is reacted with 3-bromopropyl-5,5-dimethyl hydantoin to obtain modified graphene;After dispersing modified graphene, fiber, 3-glycidyl ether oxypropyl trimethoxysilane, modified liquid are added, and modified fiber is prepared after reaction;After weaving and spinning modified fiber, soak sodium hypochlorite solution, and prepare breathable far infrared fiber fabric.The breathable far infrared fiber fabric prepared by the application has the advantages of air permeability, far infrared, antibacterial, flame retardant, ultraviolet protection and washing resistance.

The invention discloses a method for disinfecting by efficiently generating hypochlorous acid on site through a hydration method. The method comprises the following steps: 1, checking and preparing equipment; 2, pretreating the raw materials; step 3, carrying out hydration reaction on CO2 and water; 4, conveying and preparing a sodium hypochlorite solution; 5, adding a mixture of the hydration reaction of CO2 and water for reaction; step 6, mixing and adding a hypochlorous acid solution and a mixture of a hydration reaction of CO2 and water; step 7, monitoring and adjusting a disinfection process; 8, automatic control and remote monitoring are carried out; ninthly, equipment is maintained and maintained; hypochlorous acid is efficiently generated on site through a hydration method, the problem that hypochlorous acid is difficult to store for a long time and transport for a long distance is solved, the disinfection efficiency is greatly improved, and the disinfection cost is reduced. By accurately controlling the reaction conditions, the generated hypochlorous acid is ensured to have an optimal disinfection effect, and automation and safety of operation are realized at the same time.

The invention relates to the technical field of semiconductor material precision machining, in particular to a chemical mechanical polishing solution as well as a preparation method and application thereof. The chemical mechanical polishing solution comprises the following components in percentage by mass: 6-12% of a composite abrasive, 3-7% of a composite oxidant, 2-5% of a complexing agent, 0.5-2% of a phosphine antidote, 0.3-1.5% of a dispersion stabilizer, 0.1-1% of a pH regulator and the balance of water. The composite abrasive is a composite material of aluminum oxide and silicon dioxide; the composite oxidant comprises a sodium hypochlorite solution and a hydrogen peroxide solution. Through reasonable proportioning and synergistic effect of the composite abrasive, the composite oxidant, the complexing agent, the phosphine antidote, the dispersion stabilizer and the pH regulator, the polishing solution is not only suitable for a single substrate, but also compatible with chemical mechanical polishing of three typical third-generation semiconductor materials of indium phosphide, gallium arsenide and germanium, has good universality and process adaptability, and is suitable for industrial production. And the production cost and the process switching complexity can be reduced.

The application provides a method for breeding radix curcumae in liquid medium and application thereof, and belongs to the technical field of plant culture. The method comprises the following steps: (1) taking radix curcumae seeds, washing, and then sequentially using alcohol disinfection, sodium hypochlorite solution immersion, sterile water immersion and washing to obtain disinfected seeds; (2) inoculating the disinfected seeds into liquid medium, and culturing the sterile seeds on the liquid medium to obtain sterile tissue culture seedlings; (3) cutting the sterile tissue culture seedlings into stem segments with a length of 2-3 cm, each of the stem segments having at least one pair of axillary buds, and inoculating the stem segments into the liquid medium of the same composition in step (2) to carry out tissue culture seedling subculture. The method has good tissue culture effect on radix curcumae, can simultaneously achieve excellent cultivation effects in the germination rate of seeds, the average germination rate of tissue culture seedlings, the growth height and the differentiation rate, and has high research value and application prospect.

This invention relates to a method for the germination of Cibotium barometz spores and a method for the propagation of Cibotium barometz, belonging to the field of plant culture technology. The propagation method of this invention includes the following steps: disinfection: disinfecting Cibotium barometz spores with a 10% sodium hypochlorite solution for 5-10 minutes; spore germination: the germination medium used includes 1 / 4 MS medium, 4.5-7 g·L⁻¹. ‑1 Agar and 0-30 g·L ‑1 Sucrose; Sporophyte differentiation: The sporophyte differentiation media used included 1 / 2 MS medium and 0-1 mg / L... ‑1 6-BA, 0.5-1 mg·L ‑1 2,4-D, 4.5-7 g·L ‑1 Agar and 25-30 g·L ‑1 Sucrose; Sporophyte strengthening: The sporophyte strengthening medium used included 1 / 4 MS medium, 4.5–7 g·L⁻¹. ‑1 Agar, 30 g·L ‑1 Sucrose and 1-2 g·L ‑1 Activated carbon; hardening and transplanting: After the tissue culture seedlings are sealed, the seal is gradually lifted, and they are then transferred to a specific mixed substrate for cultivation to obtain commercial seedlings. This method can improve the spore germination rate by using a specific sterilization procedure, and achieves the effect of producing more and better seedlings by using specific culture media and hardening preparations at each stage.

The application discloses a method for improving the germination rate of stevia seed, and specifically comprises the following steps: selecting full and healthy stevia seed with consistent size for standby; disinfecting the stevia seed with 10% sodium hypochlorite solution for 5-15 minutes, then rinsing with distilled water for multiple times and filtering dry; preparing different concentrations of salicylic acid to pretreat the stevia seed; taking equal amounts of salicylic acid with different concentrations into at least three portions, and adding equal amounts of the disinfected stevia seed into each portion for seed soaking; after the seed soaking, rinsing with distilled water for 3-5 times, and performing seed germination test by adopting the culture dish filter paper method; starting observation and recording from the day when the stevia seed is placed on the bed; and comparing the germination of the stevia seed. The method for improving the germination rate of stevia seed has the advantages of convenience, high efficiency, non-toxicity, non-residue, low cost, high economic benefit, and wide application prospect in modern efficient agricultural production.

This invention discloses an edible aerogel derived from *Flammulina velutipes*, its preparation method, and its applications. The preparation method includes the following steps: dispersing dried *Flammulina velutipes* powder in an aqueous sodium hydroxide solution, reacting, separating, and washing to obtain a precipitate; dispersing the precipitate in an aqueous sodium hypochlorite solution for bleaching, separating, washing, and freeze-drying to obtain an extract; dissolving polyphenols in an aqueous NaOH solution to obtain a NaOH / polyphenol dissolution system; dispersing the extract in the NaOH / polyphenol dissolution system, and shaking to promote CGC swelling; cycling the obtained suspension through freeze-thaw cycles 2-4 times; centrifuging the suspension, and partially dialyzing the solution to remove NaOH to obtain a hydrogel-like CGC-polyphenol complex; freeze-drying and grinding the hydrogel-like CGC-polyphenol complex to obtain an edible aerogel derived from *Flammulina velutipes*. This invention provides the application of the aforementioned edible aerogel derived from *Flammulina velutipes* in the preparation of weight-loss drugs or dietary supplements.

The application discloses a hypochlorous acid solution generating device based on automatic adjustment of displacement stroke of solution quantity, relates to the technical field of hypochlorous acid solution production, and is used for generating sodium hypochlorite solution into hypochlorous acid water. The hypochlorous acid solution generating device comprises a main body mechanism, a displacement mechanism, a pipeline adjusting mechanism and a liquid replacing mechanism. The main body mechanism and the displacement mechanism are connected. The main body mechanism and the pipeline adjusting mechanism are connected. The main body mechanism and the liquid replacing mechanism are connected. The displacement mechanism and the pipeline adjusting mechanism are connected. The displacement mechanism and the liquid replacing mechanism are connected. The main body mechanism comprises a workbench, an initial solution storage tank and a hypochlorous acid water storage tank. The initial solution storage tank is arranged on the workbench. The hypochlorous acid water storage tank is arranged on the workbench. The workbench is connected with the displacement mechanism. The workbench is connected with the pipeline adjusting mechanism.

The invention discloses a method for rapidly cultivating hibiscus hamabo aseptic seedlings. The method comprises the following steps: A, seed selection: selecting hibiscus hamabo seeds which are full in grains and free from plant diseases and insect pests; b, acid treatment, wherein strong acid is adopted for immersion treatment for 15 min to 25 min; c, removing acid residues; d, disinfection treatment, wherein the hibiscus hamabo seeds subjected to acid residue removal are sequentially subjected to alcohol immersion soaking treatment for 30-90 s and sodium hypochlorite solution immersion soaking treatment for 5-25 min for disinfection; e, cleaning and airing; f, germination accelerating culture: completing germination of the hibiscus hamabo seeds within 12 days; and G, carrying out domestication culture to obtain the hibiscus hamabo aseptic seedlings. According to the method disclosed by the invention, the germination speed and the germination rate of the hibiscus hamabo seeds and the survival rate of aseptic seedlings are effectively improved in a manner of combining acid treatment and disinfection treatment; environment regulation of germination accelerating culture and domestication culture is combined, so that the seedling raising efficiency is remarkably improved; and reliable technical support is provided for efficient propagation of hibiscus hamabo.

The utility model relates to the technical field of disinfectant production, in particular to an online sodium hypochlorite generator. The online sodium hypochlorite generator comprises a bottom frame and a pressure sensing plate, and the pressure sensing plate is arranged on the bottom frame. The electrolytic bath is arranged on the pressure sensing plate; the two sides of the electrolytic cell are provided with the electrolytic electrodes penetrating through the cell wall; and the outer side of the electrolytic cell penetrates through the cell wall of the electrolytic cell and is provided with the feeding mechanism capable of enabling different raw materials to sequentially enter the electrolytic cell as required. The whole reaction process is monitored and controlled through the pressure sensing plate and the controller, the total amount of raw materials entering the electrolytic bath is accurately controlled, hydrogen generated by the reaction is discharged through the oil-free vacuum pump, and after a high-concentration sodium hypochlorite solution with enough quality is generated by the electrolytic reaction, the hydrogen is discharged through the oil-free vacuum pump. And accurately controlling the water with the corresponding mass to enter the electrolytic bath, and diluting to obtain the sodium hypochlorite solution with the required mass and the required concentration.

The application provides a kind of automatic cleaning type flow cytometer sample inlet cleaning method, belongs to the technical field of instrument cleaning material.The application sequentially carries out pre-cleaning, formal cleaning and re-cleaning to the automatic cleaning type flow cytometer;The cleaning liquid used in pre-cleaning and re-cleaning is Decon 90 cleaning agent;The cleaning liquid used in formal cleaning is sodium hypochlorite solution.The application removes suspended particles and adheres to the sample inlet by pre-cleaning, makes the biological membrane of sample inlet activated, formal cleaning can effectively remove the adherend on the inner wall of sample inlet, and re-cleaning makes the broken suspended biological membrane fragment particles be fully flushed and removed, and the background particle number and fluorescence value reach the lowest level.Through the new cleaning method of the application, the cytometer is in the best working condition.

The application discloses a device for preparing electronic-grade sodium hypophosphite dearsenicated salt sodium salt, and belongs to the technical field of electronic chemical preparation. The device realizes the efficient dispersion of phosphine gas into micron-sized bubbles through a membrane dispersion reaction system, realizes the full and stable reaction of the phosphine gas with sodium hypochlorite solution, guarantees the high efficiency and uniformity of the main synthesis reaction from the source, and provides a composition-stable crude product liquid for subsequent continuous purification. Through a bypass arsenic removal unit integrated in a buffer adjustment system, the on-line circulation oxidation-precipitation-separation of arsenic impurities is realized without interrupting the main synthesis process, and the problem of the interruption of the synthesis route caused by the intermittent arsenic removal in the traditional process is solved. By arranging yellow phosphorus storage tanks in parallel and alternately working, the continuous and stable supply of the raw material yellow phosphorus to the phosphine reaction kettle is realized. The device ensures the long-term continuous and stable operation of the synthesis route and the high consistency of product batches, and is particularly suitable for the large-scale continuous production of electronic-grade sodium hypophosphite.

The invention aims to at least solve the problem of poor mulberry leaf preservation effect in the prior art, and provides a mulberry leaf preservation method which comprises the following steps: picking mulberry leaves, and screening and sorting the picked mulberry leaves. Washing the mulberry leaves in the previous step with clear water, and airing after washing; the aired mulberry leaves are disinfected, the disinfection refers to that the mulberry leaves are soaked in a sodium hypochlorite solution with the concentration being 0.05%-0.1%, and the soaking time is 3-5 minutes; washing the mulberry leaves in the previous step with clear water, and airing after washing; performing pre-cooling treatment on the mulberry leaves in the previous step; the precooled mulberry leaves are packaged; and refrigerating the packaged mulberry leaves, and preserving for later use. Through the cold storage and fresh-keeping technology, the fresh-keeping period of the mulberry leaves can be prolonged to about 10-15 days, so that the requirements of silkworm culture and the like on fresh mulberry leaves are met.

The invention discloses a catalyst for synthesis of a macloxvir intermediate and a preparation method of the intermediate, and belongs to the technical field of pharmaceutical chemical synthesis. The catalyst is an HZSM-5 spherical molecular sieve supported iron / tungsten-based catalyst; under the combined action with sodium hypochlorite, methyl in 3-(benzyloxy)-2-methyl-4H-pyran-4-one can be oxidized into carboxyl with high selectivity, so that a target carboxylic acid structure is efficiently constructed. The preparation method of the intermediate comprises the following steps: synchronously pumping a mixed solution of a sodium hydroxide aqueous solution of maltol and acetonitrile and a benzyl chloride solution into a first microchannel reactor for a benzylation reaction to obtain a 3-(benzyloxy)-2-methyl-4H-pyran-4-one solution; then pumping the 3-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid solution and a sodium hypochlorite solution into a second micro-channel reactor for oxidation reaction to generate a 3-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid solution; and finally, separating out the product through an acidification process, and filtering and recrystallizing to obtain the macarovir intermediate with the purity of 99.9%.

The utility model relates to an integrated chlorine supplementing device for a water supply network, and belongs to the technical field of tap water supply. An inner cavity of the storage box is divided into an upper-layer liquid storage cavity, a middle-layer heat exchange cavity and a bottom-layer liquid outlet cavity by the upper partition plate and the lower partition plate, a dosing pump, a remote flow meter and a liquid drainage one-way valve are installed on the main dosing pipe, an end connecting pipe A communicated with the middle-layer heat exchange cavity is arranged on the left side face of the storage box, and an upper connecting flange A is arranged on the end connecting pipe A; an end connecting pipe B communicating with the middle-layer heat exchange cavity is arranged on the right side face of the storage box, and an upper connecting flange B is arranged on the end connecting pipe B. The sodium hypochlorite storage tank has the beneficial effects that a sodium hypochlorite solution can be injected into the storage tank through the liquid injection port, tap water flows into the middle-layer heat exchange cavity in the storage tank and then flows out from the middle-layer heat exchange cavity, and in the process, the tap water with lower temperature in the tap water main pipeline can cool down sodium hypochlorite in the storage tank, so that the sodium hypochlorite is prevented from being damaged. The stability of the solution is maintained, and the decomposition speed can be effectively slowed down.

The invention provides a disinfection method of an explant for inducing callus of rosa chinensis and a method for inducing the callus, and belongs to the technical field of tissue culture. According to the disinfection method of the explant for inducing the Chinese rose callus, the 75% alcohol aqueous solution and the 2.5% sodium hypochlorite solution are used for combined disinfection of the Chinese rose explant collected in the field, the pollution rate is remarkably reduced to 20% for the problems of high bacterium carrying amount and high disinfection difficulty of a collected material, and the cost is reduced. Meanwhile, high survival rate (80%) and high germination rate (60%) of the explants are ensured. The invention further provides a callus induction method of the disinfected explant, the induction efficiency is improved to 70%, the induction efficiency of the callus is remarkably improved, the induced callus is good in state, light yellow green and loose in texture, and a good material foundation is laid for subsequent tissue culture. The method provided by the invention has the advantages of clear steps, optimized parameters, strong operability and good repeatability.

The present application relates to a kind of anti-pollution temperature-sensitive polyamide nanofiltration membrane and its preparation method;Including polysulfone base film and the polyamide active separation layer formed on it by interfacial polymerization, polyamide active separation layer surface is covalently grafted with a layer of copolymer brush, copolymer brush is formed by the random copolymerization of zwitterionic monomer structural unit and temperature-sensitive monomer structural unit by ultraviolet light initiation. By ultraviolet light initiation grafting technology, sulfobetaine methacrylate and N-isopropyl acrylamide are copolymerized on the same membrane surface, realize the synergistic effect of the strong hydration and antibacterial properties of zwitterionic polymer and the intelligent conformational transition ability of temperature-sensitive polymer. In the anti-bovine serum albumin pollution test, the flux decline rate after pollution is only 20.41%, and the flux recovery rate after 40 DEG C warm water cleaning is as high as 93.02%;After being treated in 1000 mg / L sodium hypochlorite solution for 4 hours, the water flux changes only by 17.22%, and the rejection rate changes only by 0.21%, ensuring the durability of membrane performance.

The invention discloses a disinfection method of an oil-spot lily tissue culture explant. The disinfection method comprises the following steps: S1, spraying alcohol on the surfaces of oil-spot lily leaves, and then carrying out oscillation disinfection treatment by adopting a sodium hypochlorite solution a with the mass concentration of 0.1-0.3%; s2, a sodium hypochlorite solution b with the mass concentration of 0.7%-1% is adopted for carrying out oscillation disinfection treatment on the oil point lily; s3, carrying out oscillation disinfection treatment by adopting a thisporine solution with the concentration of 300 to 500 mg / L; and S4, washing with sterile water. The disinfection reagent adopted in the disinfection method does not contain toxic substances such as mercury, the problems that the toxicity of a traditional disinfection reagent damages explants and pollutes the environment are solved, sodium hypochlorite and tiaculomycin with various concentrations are used in a compounded mode, the oil-spot lily treated through the method is low in pollution rate, the survival rate of the explants is high, and the oil-spot lily has the good disinfection effect. And a basis is provided for tissue culture of the oil-point lily.

The application discloses an electrolysis hydrogen removal device of a ship ballast water treatment system and a pressurized hydrogen removal method, and belongs to the field of marine environmental engineering. The device comprises a cyclone separator, a water inlet pipeline, a gas outlet pipeline and a liquid level meter; an automatic adjusting valve is connected with the liquid level meter, the opening of the automatic adjusting valve is adjusted according to the data monitored by the liquid level meter, the pressure in the barrel of the cyclone separator is controlled to be 2-7 bar, and the hydrogen flow rate in the gas outlet pipeline is controlled to be 0.5-15 m / s. The application is applied to the field of marine environmental engineering, solves the technical problem that the existing hydrogen removal method of the ship ballast water treatment system adopts more system internal module settings, and increases the risk of system operation failure, and has the characteristics that the generated sodium hypochlorite solution after hydrogen removal of the electrolysis device can be directly injected into the main pipeline under pressure, and an additional dosing pump is not needed for pressurized injection.