389 results about "Sodium hypochlorite" patented technology

The invention provides an intelligent chemical adding control method and system, equipment and a storage medium, and belongs to the technical field of intelligent control, the method is applied to a water treatment system, and the method comprises the following steps: based on raw water data, obtaining a first chemical adding amount through a chemical adding amount prediction model; generating an initial dosing amount instruction based on the first dosing amount, and sending the initial dosing amount instruction to a polyaluminum chloride dosing device and a sodium hypochlorite dosing device; obtaining the raw water ion concentration, alumen ustum form data and a floating current value after chemical adding, calculating a first difference value between the raw water ion concentration and a target ion concentration, calculating a second difference value between the alumen ustum form data and target alumen ustum form data, and calculating a third difference value between the floating current value and a target floating current value; and determining a target correction coefficient based on the first difference value, the second difference value and the third difference value, and updating the first dosage based on the target correction coefficient to obtain a second dosage. According to the invention, the dosing precision and adaptability can be improved.

The invention discloses a degradable antibacterial fiber and a preparation method thereof, and belongs to the field of environment-friendly materials. The invention aims to solve the problems that the antibacterial long-term effect and the degradability are unbalanced, and the toxicity of an antibacterial agent conflicts with the biocompatibility. The fiber is composed of bacteriophage antibacterial peptide, polyhydroxyalkanoate, sodium hypochlorite and the like, the antibacterial peptide is derived from a bacteriophage phi 87S / 06 genome, and a mineralizing solution is prepared according to a ratio of CaCl2 to Na2HPO4 to sodium alginate of 3: 2: 2. The preparation method comprises the following steps: constructing double-plasmid engineering bacteria through gene editing to realize synergistic expression of the antibacterial peptide and PHBV, performing fermentation separation to obtain a copolymer, and performing ionic liquid dissolution, boric acid crosslinking, electrostatic spinning and mineralized coating treatment. After the product is washed for five times, the antibacterial rate is greater than 99%, the weight loss rate in 90 days is 82%, the tensile strength is 18MPa, the elongation at break is 25%, the balance of antibacterial long-term effect, degradability and mechanical property is realized, and the antibacterial material is suitable for the fields of medical dressings and the like.

The invention provides a reverse osmosis optimal dosing system and method based on ultraviolet sterilization, and the method comprises the following steps: firstly, the system monitors the influent microorganism load and water quality in real time, dynamically calculates the required ultraviolet dosage, and precisely adjusts the power of an ultraviolet sterilizer; secondly, according to the residual microorganism risk and the water inlet flow after ultraviolet treatment, the feeding amount of an oxidizing bactericide (such as sodium hypochlorite) is accurately adjusted according to a PID control strategy combining feedforward and feedback; meanwhile, according to the oxidation-reduction potential of the sterilized water body, a reducing agent (such as sodium hydrogen sulfite) is intelligently added to protect the reverse osmosis membrane. And finally, efficient cooperation of ultraviolet physical sterilization and chemical sterilization is achieved, on the premise that strict control over microbial pollution is guaranteed, the consumption and operation cost of chemical agents are remarkably reduced, generation of by-products is reduced, the service life of a reverse osmosis membrane is prolonged, and the intelligent level of system operation and the overall economic benefits are improved.

The invention discloses a ceramic membrane cleaning agent which comprises an agent A, an agent B, an agent C and water, wherein the agent A comprises sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant; the agent B comprises potassium pyrophosphate and ethylenediamine tetraacetic acid tetrasodium salt; the agent C comprises sodium hypochlorite. The invention further discloses a preparation method of the ceramic membrane cleaning agent. The problems that an existing ceramic membrane cleaning agent is common in cleaning effect, and the service life of a ceramic membrane is affected due to incomplete cleaning are solved. The agent A is selected from sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant, and the sodium dodecyl sulfate and the polyoxyethylene ether nonionic surfactant both have an emulsifying effect and good compounding property and can enhance the emulsifying effect through a synergistic effect; in the agent B, the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate have a synergistic effect, and the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate are matched, so that the cleaning effect can be improved, and the decontamination capability can be enhanced. The agent C is matched with the agent A and the agent B, so that the overall stability of the cleaning agent is ensured. Therefore, the ceramic membrane has antibacterial, efficient decontamination and efficient emulsification performance at the same time.

The invention belongs to the technical field of sodium hypochlorite production, and particularly relates to a method for producing sodium hypochlorite. A method for producing sodium hypochlorite comprises the following steps: adding a compound additive into a sodium hydroxide aqueous solution, and uniformly stirring to obtain a compound alkali-containing raw material solution; respectively introducing the composite alkali-containing raw material solution and chlorine into the micro-channel reactor through a metering pump, and controlling reaction conditions to generate a reaction solution containing sodium hypochlorite; introducing the reaction liquid into a ceramic membrane separation device, separating and removing unreacted solid impurities and by-product salts, and collecting permeate; unreacted sodium hydroxide is recycled and reused; and detecting the permeate liquid to be qualified to obtain a sodium hypochlorite finished product. According to the invention, four key links of compound additive addition, microchannel reaction, ceramic membrane separation and resin recovery are organically linked to form a systematic solution. Aiming at the core pain points of insufficient reaction, more byproducts, raw material waste, equipment corrosion and the like in the traditional process, the product purity is improved through the synergistic effect of all links.

The invention provides a fracturing fluid base fluid, a water-based fracturing fluid and a preparation method of the water-based fracturing fluid, and relates to the technical field of oil fields. The fracturing fluid base fluid is prepared from the following components in percentage by mass: 97.3 percent to 98.1 percent of produced water, 0.5 percent to 0.55 percent of hydroxypropyl guar gum, 0.004 percent to 0.005 percent of sodium hypochlorite, 0.015 percent to 0.03 percent of citric acid, 0.1 percent to 0.18 percent of dodecyl dimethyl benzyl ammonium bromide, 0.2 percent to 0.3 percent of ethylenediamine tetraacetic acid disodium salt, 0.3 percent to 0.5 percent of a temperature stabilizer, 0.6 percent to 0.8 percent of a pH value regulator and 0.2 percent to 0.3 percent of a cleanup additive; the pH value of the fracturing fluid base fluid is 7.5. The fracturing fluid base fluid prepared from the produced water has the advantages of rapid adhesion, no precipitation, no weak crosslinking and no floccule phenomenon, so that the guar gum fracturing fluid prepared from the fracturing fluid base fluid has the characteristics of self-adaption to a reservoir, ultralow damage and high performance.

A sodium hypochlorite on-line preparation and on-line dilution fusion feeding system comprises a sodium hypochlorite generator and a feeding lifting pump, at least two transfer storage tanks are connected between a liquid outlet pipe of the sodium hypochlorite generator and a liquid inlet of the feeding lifting pump in parallel through pipelines, at least one of the transfer storage tanks is a dual-purpose storage tank, and the other transfer storage tank is a dual-purpose storage tank. Valves are arranged on a liquid inlet pipe and a liquid outlet pipe of the dual-purpose storage tank; the dual-purpose storage tank is respectively communicated with a liquid outlet of the commercial sodium hypochlorite lifting pump and a liquid inlet of the online proportional dilution device through pipelines with valves; the liquid inlet of the on-line proportional dilution device is also communicated with a soft water inlet pipe; and a liquid outlet of the on-line proportional dilution device is communicated with a liquid outlet pipe of the sodium hypochlorite generator through a pipeline with a valve. According to the system, the preparation, dilution and adding processes of sodium hypochlorite are integrated together, so that the efficiency and the safety are improved, the equipment cost and the occupied area are reduced, and deterioration waste caused by inconvenience in use of high-concentration commodity sodium hypochlorite is avoided.

The invention belongs to the technical field of cultivation and utilization of herba artemisiae annuae, and particularly relates to a method for increasing the breeding success rate of herba artemisiae annuae seeds in alpine regions. The method comprises the following steps: cleaning the fluffy wormwood seeds, then adding the fluffy wormwood seeds into an acid solution, carrying out acid soaking treatment, and then washing the fluffy wormwood seeds to obtain the fluffy wormwood seeds subjected to acid soaking; the method comprises the following steps: adding the acid-soaked artemisia splendens seeds into somatotropin, carrying out growth promoting treatment, washing with water, treating the seeds with alcohol and sodium hypochlorite in sequence, and finally carrying out seed germination treatment. According to the method, through the synergistic effect of the steps, the germination rate of the artemisia splendens seeds can be remarkably increased, the germination time lag is greatly shortened, robust growth of seedlings is promoted, and the problem of large-scale propagation of the artemisia splendens seeds is effectively solved.

The invention discloses a high-barrier antibacterial plastic packaging film and a preparation method thereof, belongs to the technical field of film processing, and aims to solve the technical problem that the antibacterial property and barrier property of a plastic packaging film need to be further improved in the prior art. The composite material specifically comprises the following components in parts by weight: 60-80 parts of linear low-density polyethylene, 10-15 parts of a modified compatibilizer, 4-6 parts of a modified antibacterial capsule and 1-3 parts of an auxiliary additive. The preparation method comprises the following steps: oxidizing 2-methyl-2-acrylic acid-2, 2, 6, 6-tetramethyl-4-piperidinyl ester with sodium hypochlorite to obtain a modified precursor, and carrying out free radical polymerization reaction on the modified precursor, low-density polyethylene, glycidyl methacrylate and vinyl heptafluorobutyrate to form a compatibilizer with a block structure. The antibacterial property and barrier property of the plastic packaging film are improved, and the mechanical property of the plastic packaging film is also improved.

The invention discloses a method and system for controlling the concentration of sodium hypochlorite in a vegetable cleaning pool based on an online spectrum, and relates to the field of food processing. The system comprises a spectrum detection module, a filtering module, an intelligent control module, a dosing module, a backflushing module and a data management module. The spectrum detection module detects at the wavelength of 255 nm and eliminates low-temperature interference in combination with a temperature sensor and a compensation algorithm; the filtering module adopts a two-stage series structure to remove impurities; the intelligent control module processes data, calculates the concentration through a concentration regression model, controls the dosing module to perform accurate dosing when the concentration is lower than a preset value, and triggers dilution when the concentration is higher than the preset value; the back-flushing module triggers back-flushing maintenance of a filter element at regular time or under differential pressure; and the data management module stores the display data and supports parameter adjustment. The detection precision and the anti-interference capability are improved, the maintenance cost is reduced, accurate concentration regulation and control are realized, and the disinfection effect is guaranteed.

The invention belongs to the technical field of sodium hypochlorite generators, and particularly relates to an improved sodium hypochlorite generator which comprises a device table with an opening in the center, a reaction tank is arranged above the device table, and the upper end and the lower end of the reaction tank are rotationally connected with an upper end plate and a lower end plate in a sealed mode respectively. Four fixing blocks distributed in a rectangular shape are fixedly connected between the lower end plate and the inner wall of the device table, two electrolysis reactors are installed between the upper end plate and the lower end plate, and each electrolysis reactor comprises a reaction cylinder fixedly connected between the upper end plate and the lower end plate; the peripheral surface of the reaction cylinder is communicated with a liquid outlet pipe and a liquid inlet pipe which are distributed up and down, and one ends, far away from the reaction cylinder, of the liquid outlet pipe and the liquid inlet pipe respectively extend out of the upper end plate and the lower end plate. The device has the advantages that by integrating the functions of temperature control, reverse pole descaling, dynamic stirring, safe discharging and the like, high efficiency, stability and safety of sodium hypochlorite preparation are achieved, and a reliable disinfection solution is provided for the water treatment industry.

The application provides a method for detecting the content of sodium hypochlorite in chicken, and belongs to the technical field of quantitative detection. Terahertz spectrum testing is performed on a dried chicken sample to obtain the peak height of a sodium hypochlorite characteristic peak; then, according to a standard curve and the peak height of the sodium hypochlorite characteristic peak, the content of sodium hypochlorite in the chicken is obtained; the frequency of the sodium hypochlorite characteristic peak is 1.10 THz or 1.25 THz; and the standard curve is a fitting curve of the mass content of sodium hypochlorite in the chicken and the peak height of the sodium hypochlorite characteristic peak. Different molecules exhibit different absorption peaks in terahertz absorption spectrum, and the application detects the content of sodium hypochlorite in chicken by using a terahertz spectrum method, and obtains the content of sodium hypochlorite in chicken by using the fitting relationship between the peak height of the sodium hypochlorite absorption peak and the content of sodium hypochlorite. The method provided by the application is simple, and can quickly and accurately obtain the content of sodium hypochlorite in chicken.

The invention discloses a method for removing diatom through combination of pre-oxidation of sodium hypochlorite and potassium permanganate and coagulative precipitation enhancement, and belongs to the technical field of water treatment. The method comprises the following steps: adding sodium hypochlorite and potassium permanganate into diatom-containing water step by step, and carrying out a combined pre-oxidation reaction for 30-60 minutes; and then adding a coagulant to react, and standing and precipitating for about 60 minutes, so that the diatom cells in the water can be efficiently removed. Aiming at the problems of low diatom oxidation removal rate, poor coagulation effect, filter tank blockage and the like in a conventional water treatment process, straight-chain diatom cell membrane structures are primarily destroyed through sodium hypochlorite, negative electricity groups on cell surfaces are exposed, and a favorable reaction interface is provided for potassium permanganate; in-situ manganese dioxide generated by further adding potassium permanganate can coat cells and neutralize surface charges, and an ideal condition is created for the coagulant to form an adsorption bridge, so that a coagulation interface is remarkably improved, and the removal efficiency of diatom cells is improved.

The invention provides high-whiteness and low-isoflavone-content soybean protein isolate for infant food, and belongs to the technical field of infant complementary food. Comprising the following components in percentage by mass: 92.5%-6% of soybean protein isolate, 6.0% of maltodextrin, 0.8% of sodium carboxymethyl cellulose, 0.1% of sucralose and 0.6% of ethyl vanillin, the risk of residual chemical bleaching agents (hydrogen peroxide and sodium hypochlorite) is avoided, the content of isoflavone is reduced to be less than or equal to 10mg / kg, the hidden danger of endocrine interference is reduced, the damage of high temperature and strong acid / alkali to a protein structure is reduced, and the quality of the protein is improved. The energy consumption is reduced through low-temperature sterilization and vacuum freezing dehydration, the whiteness is greater than or equal to 85%, the sensory requirements are met, the protein content is greater than or equal to 90%, the purity is high, and the protein is suitable for being used as a high-quality protein source of infant food; the green solvent and physical / biological decoloration reduce chemical pollution, and the process is more environment-friendly.

The invention discloses a preparation method of porous carbon nanofibers for carbon dioxide capture performance research. The preparation method comprises the following steps: step 1, taking polyacrylonitrile as a base material and polyvinylpyrrolidone as a pore-forming agent, and carrying out electrostatic spinning to obtain composite nanofibers; step 2, soaking the composite nanofibers prepared in the step 1 in sodium hypochlorite to obtain porous nanofibers; 3, performing high-temperature carbonization treatment on the porous nanofibers prepared in the step 2 to prepare porous carbon nanofibers; and step 4, carrying out drying treatment on the porous carbon nanofiber prepared in the step 3. The problems of high technical energy consumption and high cost in the prior art are solved.

The invention discloses a cyanide breaking process device based on spectrum on-line monitoring, which comprises a spectrum on-line monitoring module, a cyanide breaking reaction tank group, a reaction control system, an intelligent decision-making module and an executing mechanism, and is characterized in that the spectrum on-line monitoring module is composed of a micro multichannel spectrum sensor provided with an array type LED light source and an independent light intensity feedback circuit; a bypass circulating pipeline is connected with the main treatment system and a filter is arranged to eliminate the interference of suspended matters; the cyanide breaking reaction tank group comprises an alkaline oxidation tank and an acid decomposition tank which are connected in series, each tank body is internally provided with a stirrer, a liquid level monitoring unit, a temperature control unit and a stirrer driving unit, the acid decomposition tank is provided with a PH sensor, and the intelligent decision module integrates an edge calculation unit and a cloud database, receives spectral data in real time and outputs a control instruction; the execution mechanism is composed of a sodium hypochlorite metering pump connected with an intelligent decision-making module, a PH regulator adding device and a central control unit containing a safety interlocking module.

The application discloses a kind of synthesis methods of high-purity electronic grade sodium hypophosphite, dilute phosphine gas is passed into to the mixed solution of sodium hypochlorite and sodium hydroxide that has been pre-cooled with sufficient stirring, and sodium hydroxide is added to carry out reaction;After reaction is completed, filtration, concentration, crystallization, separation are carried out, and the obtained product is purified by resin to obtain high-purity electronic grade sodium hypophosphite product.Compared with the traditional "yellow phosphorus-lime-soda" oxidation-reduction method for preparing industrial grade product and then preparing high-purity electronic grade sodium hypophosphite, the product purification difficulty of the application is low, by using 7N grade ultra-high purity phosphine without any metal impurities, the problem that arsenic, silicon, germanium, nickel, chromium and other metal impurities cannot be completely removed by traditional process can be effectively solved.In addition, the application also has the advantages of effectively solving the problem of three wastes, high recycling rate of by-products, high economy and the like.

[Problem] Provided are: a method for producing a regenerated cellulose-derived cellulose dispersion or a regenerated cellulose-derived cellulose molded body capable of suppressing swelling in alkali and deterioration of whiteness over time; regenerated cellulose-derived cellulose beads; and a cosmetic material. [Solution] This method comprises: a pulverization step in which a regenerated cellulose is used as a dispersion raw material and the dispersion raw material is pulverized; a depolymerization step in which sodium hypochlorite is added to the pulverized raw material obtained in the pulverization step to reduce a degree of polymerization of the pulverized raw material; a pH adjustment step in which a pH-adjusted cellulose is obtained through a first pH adjustment operation for adjusting the pH of the depolymerized cellulose obtained in the depolymerization step to an alkaline pH of at least 9, a second pH adjustment operation for adjusting the pH of the depolymerized cellulose to an acidic pH of at most 6, and a neutralization operation for neutralizing the depolymerized cellulose; a washing step in which the pH-adjusted cellulose is washed; and a micronization step in which the pH-adjusted cellulose after the washing step is micronized to obtain a cellulose dispersion.

The invention discloses a domestic water manganese removal device which comprises a treatment assembly, an activation assembly and a water supply assembly, the treatment assembly comprises a treatment container, a filter part and a plurality of manganese dioxide particles, the filter part is arranged in the treatment container and divides an inner cavity of the treatment container into a treatment cavity and a drainage cavity, and the manganese dioxide particles are arranged in the treatment container; the activation assembly comprises an activation container, a communicating piece, a sodium hypochlorite supply piece and a liquid discharge piece, the sodium hypochlorite supply piece and the liquid discharge piece are communicated with the activation container, the activation container is arranged above the treatment container, and the communicating piece is provided with a communicating channel which can be opened and closed and is communicated with the activation container and the treatment container; the liquid outlet end of the water supply assembly is communicated with the bottom of the treatment cavity and the activation container. According to the domestic water manganese removal device, manganese in water can be removed, the filter material can be activated, activation and water purification are completely separated, and water quality pollution in the activation process is avoided.

The invention discloses continuous microwave vacuum drying equipment based on sodium hydrosulfite, and relates to the technical field of sodium hydrosulfite drying. The device comprises a vacuum tank, microwave generators are installed at the inner top of the vacuum tank in a linear array mode, a feeding assembly is arranged at the top of the vacuum tank, a discharging assembly is arranged at the bottom of the vacuum tank, an inner support is arranged in the vacuum tank, and an annular drying assembly is arranged on the outer side of the inner support. The mode of the stepped lantern rings is adopted, it can be guaranteed that up-down conveying does not block microwaves, the using amount of microwave generators is greatly reduced, cost is reduced, meanwhile, sodium hydrosulfite is conveyed from top to bottom, the upper microwave distance is small, much heat is generated, sodium hydrosulfite with high initial humidity is rapidly dried, the lower microwave distance is gradually increased, and the drying efficiency is improved. And the generated heat is gradually reduced, subsequent sodium hydrosulfite overheating can be prevented, drying heat control is achieved through the conveying height difference, and control is easy.

The present application belongs to the field of environmental functional materials and water treatment technology, and aims to provide a preparation method of ceramic membrane based on endogenous pore forming and catalysis of sludge containing algae. The method comprises the following steps: taking dewatered sludge of water supply plant in algae outbreak period of water source, drying, ball milling and sieving to obtain sludge powder; soaking and washing after using organic acid with complexing ability as heavy metal removal agent, pre-carbonization treatment, dry pressing into embryo, sintering into membrane sheet; primary activation treatment in weak oxidizing strong acid, washing and heating treatment for secondary activation to obtain ultrafiltration ceramic membrane product. The method is simple in operation steps, easy to implement and green and environmental protection; the prepared ceramic membrane has good separation performance and high mechanical strength, can catalyze oxidizing agent commonly used in water treatment while filtering, and free radicals are generated by decomposition to degrade organic matter; or catalyze common cleaning agent sodium hypochlorite during membrane cleaning to generate free radicals to strengthen the cleaning effect.

The utility model discloses a circulating electrolysis sodium hypochlorite generator, which relates to the technical field of sodium hypochlorite generators and comprises a generator cabinet body, a base is arranged at the inner bottom of the generator cabinet body, and a handle capable of being pulled and a transmission drive sliding block II slide towards the opposite inner side to move out of a clamping groove through an adjusting mechanism. Then the base is pulled to drive the mounting frame to move out, so that the parts can be overhauled; by matching with a take-up and pay-off assembly, a steel wire rope can be pulled to drive a winding drum I to drive a rotating shaft to rotate while the mounting frame is pulled out, so that a wire on the winding drum II is released, the situation that the wire is snapped due to pulling and normal power supply use is affected is avoided, the wire can be automatically wound while the mounting frame is moved into the generator cabinet body, and practicability is higher; through the supporting assembly, when the mounting frame is pulled out to overhaul and maintain parts on the mounting frame, the supporting rod resets and rotates under the torsion of the second torsion spring, and the lower end of the supporting rod is just in contact with the ground to support the mounting frame.

The invention belongs to the technical field of solid waste treatment, and provides a resourceful treatment method for solid waste of an electrolytic aluminum factory. According to the method, sodium hypochlorite is added in the wet grinding process, so that cyanide in the solid waste of the electrolytic aluminum factory is oxidized into CO2 and N2, environmental pollution and safety risks caused by the solid waste of the electrolytic aluminum factory are thoroughly eliminated, and harmlessness is achieved. The fluorine source is used as the leaching agent, so that the molecular ratio of the cryolite can be adjusted, and the quality of the regenerated cryolite is improved; hydrochloric acid is used as a leaching agent, so that strict requirements on sulfur content of recycled electrolyte in an electrolytic aluminum factory are met. And meanwhile, no waste gas is generated by the resourceful treatment method. According to the resourceful treatment method, energy consumption is low, no acid mist is released in the operation process, the lithium yield is high, the lithium content in the solid waste of the electrolytic aluminum factory can be reduced to 0.025% from 0.4-2%, cryolite and carbon powder are obtained after filter residues obtained after lithium extraction through leaching are rinsed, separated and dried, and comprehensive resourceful utilization is achieved.

The application provides a preparation method of high-quality magnesium oxide and belongs to the technical field of magnesium metal oxide synthesis. The application uses magnesium hydroxide waste produced in an ethyl maltol process as raw material, and obtains magnesium oxide through sodium hypochlorite oxidation, twice water washing and calcination. The obtained magnesium oxide has high purity and high activity. The process flow of the application is short, the calcination temperature is low, the side reaction is less, the subsequent equipment investment is less, the price of sodium hypochlorite is relatively low, the cost is saved, new impurities are not introduced, and the application has good industrial application value.

The invention discloses a preparation process of 2-chloro-4-(methylsulfonyl)-3-methyl benzoic acid, and relates to the technical field of preparation of inorganic compounds. The invention relates to a preparation process of 2-chloro-4-(methylsulfonyl)-3-methyl benzoic acid, which comprises the following steps: reacting 3-chloro-2-methylaniline with hydrochloric acid and sodium methyl mercaptide to form an intermediate C1, reacting with acetyl chloride, catalyzing with anhydrous aluminum trichloride to form an intermediate C2, reacting with hydrogen peroxide and sodium hypochlorite to form an intermediate C4, and reacting with sodium chloride to form the 2-chloro-4-(methylsulfonyl)-3-methyl benzoic acid. The 2-chloro-4-(methylsulfonyl)-3-methyl benzoic acid is obtained after the reaction is completed.

The utility model discloses a sodium hypochlorite adding device of a sedimentation tank, and relates to the technical field related to water treatment. The device comprises a pool body, a cross beam plate, a hopper and a charging barrel, the cross beam plate is located above an inner cavity of the pool body, the hopper is fixed to one side of the cross beam plate, and the charging barrel is fixed to the other side of the cross beam plate; a discharging valve plate is arranged at a discharging opening in the bottom of the hopper, discharging pipes distributed at equal intervals are fixed to the bottom of the charging barrel in a penetrating mode, and inserting rods are inserted into the discharging pipes and the charging barrel in a penetrating mode. Through the arrangement of the cross beam plate, the hopper, the charging barrel, the discharging valve plate and the inserting rod, the problem that a quantitative, accurate and uniform sodium hypochlorite adding device is lacked is solved, and the problem that sodium hypochlorite in different states needs to be added is solved.

The present application belongs to the technical field of wastewater treatment, and discloses a coal slime water treatment agent, a preparation method and application thereof. The coal slime water treatment agent comprises a coagulant aid G and a flocculant F prepared respectively. The coagulant aid G comprises the following components in mass percentage: 3-5% of sodium hypochlorite, 2-4% of water glass, 3-5% of active silicic acid, 1-2% of sodium carboxymethyl starch, and the balance of water, and the total amount of the coagulant aid G is 100%. The flocculant F comprises the following components in mass percentage: 2-5% of sodium alginate, 2-6% of polyethyleneimine, 2-5% of chitosan, 1-4% of hydroxyethyl cellulose, 2-5% of dimethyl diallyl ammonium chloride, 3-6% of tannic acid, and the balance of water, and the total amount of the flocculant F is 100%. When the coal slime water treatment agent is applied, the coagulant aid G is first added to perform micro-treatment and pre-flocculation on the coal slime water, and then the flocculant F is added to perform intensified flocculation, so that the components complement each other, synergistically promote flocculation and sedimentation of suspended matters, and efficient separation of the suspended matters and water is realized.

To provide a hypochlorous acid water generator capable of stabilizing the pH value of generated hypochlorous acid water.SOLUTION: The control unit 81 calculates a deviation between the pH value of the aqueous solution in the water storage tank 6 detected by the pH meter 7 and the target pH value, determines the amounts of the sodium hypochlorite aqueous solution to be supplied to the raw water flowing through the first conduit 12 and chlorine to be supplied to the raw water flowing through the second conduit 13 so as to bring the calculated deviation close to 0, and supplies the sodium hypochlorite aqueous solution and chlorine.SELECTED DRAWING: Figure 1

The present application relates to sewage treatment moss cleaning technical field, disclose a kind of sedimentation tank moss cleaning method, comprising the following steps: S1, pretreatment moss, by physical and chemical methods, moss is converted into state convenient to remove;S2, spray treatment, at temperature range is 20 ℃ to 30 ℃, using the water containing sodium hypochlorite is sprayed to moss;S3, ultraviolet irradiation, to the first moss obtained ultraviolet irradiation;S4, inhibit the growth of moss, to the second moss is post-processed to inhibit its growth;S5, clean waste, moss residues, cleaning agent and other waste generated in the cleaning process are cleaned in time, avoid the influence of residue on water quality, and prevent moss from growing again again.By physical and chemical combination mode, first, the loose moss in sedimentation tank is effectively removed, then the solution containing sodium hypochlorite is used to spray the moss, to ensure that each moss patch is evenly contacted, to achieve the ideal chemical cleaning effect.

This invention discloses a method for improving the resistance to postharvest black spot disease in sweet potato tubers and maintaining their quality, belonging to the field of postharvest preservation technology for agricultural products. The method includes: selecting undamaged sweet potato tubers for callus treatment at room temperature for 48 hours, disinfecting with 1% sodium hypochlorite, rinsing with sterile water and air-drying, then soaking them in a 9.0 mmol / L benzothiadiazole (BTH) solution (containing 0.05% Tween 80) at room temperature for 60 minutes, removing them and air-drying them to complete the treatment. This invention induces the activation of the sweet potato tuber's own defense system through BTH, increasing the activity of key enzymes in phenylpropane metabolism, chitinase and other disease-resistant enzymes, promoting the accumulation of total phenols and lignin, maintaining cell membrane integrity, inhibiting starch degradation and abnormal increase in soluble sugars. Under storage conditions of 28±1℃ and 80-85%RH, it can significantly inhibit the expansion of black spot disease lesions and extend the storage period to more than 25 days. This method has no pesticide residues, is unlikely to cause pathogen resistance, is environmentally friendly, simple to operate, and cost-controllable, and is suitable for large-scale postharvest preservation of sweet potato tubers.