32 results about "Potassium bisulfate" patented technology

The invention discloses a tetracycline hydrochloride-containing wastewater treatment method in the field of wastewater treatment, which comprises the following steps: introducing tetracycline hydrochloride-containing wastewater into a reactor, adding a multilevel structure iron and iron sulfide composite carbon material, and adjusting the system to a nearly neutral condition; then adding potassium peroxymonosulfate composite salt, starting a direct current system, and carrying out catalytic degradation reaction under specific current density; and finally recovering the catalyst through magnetic field separation. The preparation method comprises the following steps: grinding pyrite and hematite, ball-milling and mixing the ground pyrite and hematite with orange peel powder and sodium hydroxide, and carrying out microwave pyrolysis, acid washing and drying, hydrogen peroxide surface treatment and the like to obtain a final product. According to the method, efficient degradation of tetracycline hydrochloride under the neutral condition is achieved, the catalyst can be magnetically recycled, secondary pollution is avoided, and the method has the advantages of being low in cost, easy and convenient to operate, environmentally friendly and the like.

The application discloses a kind of water-soluble sulphur-based compound fertilizer preparation method, belong to compound fertilizer technical field.The steps include as follows:(1) in reaction kettle, concentrated sulfuric acid and potassium chloride are reacted under heating condition, reaction temperature is 105-115 DEG C, reaction time is 25-45 minutes, slurry is sent to cooling kettle;(2) in cooling kettle, temperature is reduced to 40-60 DEG C, slurry is sent to mixed acid tank;(3) in mixed acid tank, add dilute phosphoric acid, potassium bisulfate solution and slurry, reaction temperature is 65-75 DEG C, slurry is sent to tubular reactor;(4) in tubular reactor, add ammonia, washing liquid and slurry, reaction temperature is 150-180 DEG C, slurry is sent to granulator;(5) in granulator, add alkaline compound fertilizer raw material, return material and slurry for granulation, granulation temperature is 80-95 DEG C, return material ratio is 1:1.5-2.0;(6) the granules obtained from granulator are cooled and screened to obtain product.

The invention discloses an HPCACM-coated Co3O4 composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing rice straw source cellulose; preparing rice straw source cellulose acetate (CA); preparing a hollow porous cellulose acetate fiber membrane (HPCAFM); preparing a hollow porous cellulose acetate derived carbon fiber membrane (HPCACM); and preparing the HPCACM-coated Co3O4 composite material. The prepared HPCACM-coated Co3O4 composite material is prepared based on straw, has a high specific surface area and a unique micro-mesoporous hierarchical structure, provides a rich active interface for a catalytic reaction, is beneficial to promoting mass transfer of reactants and products, efficiently activates potassium hydrogen persulfate, realizes high-value utilization of agricultural wastes, and improves the water pollution treatment efficiency.

The invention relates to the technical field of cleaning tablets, and provides a multi-effect cleaning tablet for a kitchen waste processor and a preparation method of the multi-effect cleaning tablet. The multi-effect cleaning tablet comprises a foaming cleaning layer, an oxidation sterilization layer and a deep decomposition layer, the foaming cleaning layer is arranged on one side of the oxidation sterilization layer, the deep decomposition layer is arranged on the opposite side of the oxidation sterilization layer, and the foaming cleaning layer comprises sodium bicarbonate, gluconic acid-delta-lactone, alkyl glycoside, limonene and a chelating agent; the oxidation sterilization layer comprises sodium percarbonate, potassium hydrogen peroxysulfate, potassium carbonate, sodium citrate and a stabilizer; the deep decomposition layer comprises biological enzyme. Gluconic acid-delta-lactone is adopted in the foaming cleaning layer of the multi-effect cleaning tablet to generate gluconic acid, so that the system is prevented from instantly and violently turning over, a middle-layer peroxidation system is favorably released at a proper time, invalid decomposition is reduced, strong acid or violent pH fluctuation is prevented from permeating into an inner layer, the enzyme inactivation risk is reduced, the foaming process is mild, and the foaming effect is good. And the integral integrity of the tablet can be maintained.

The present application relates to a kind of carbonized iron and nitrogen coordination iron co-doped nitrogen and graphene carbon material and preparation method and application, with six hydrated ferric chloride as iron source, with chitin as nitrogen, carbon source. By simple one-step method, after mixing, calcination, grinding way, carbonized iron and nitrogen coordination iron co-doped nitrogen and graphene carbon material is synthesized.The material prepared by the present application presents two-dimensional layered structure, after adding potassium hydrogen peroxodisulfate oxidant, the material can completely remove the active pharmaceutical ingredient naphthyl in water in a short time.Naproxen.The synthesis method proposed in the present application is simple and easy to operate, and the material performance is excellent, which can provide a new design idea for nitrogen coordination iron nanomaterial supported by carbon material, and be applied to the remediation of contaminated water.

The utility model relates to the technical field of powder packaging, in particular to a powder dredging structure of potassium hydrogen persulfate compound powder filling equipment, which comprises filling pipes arranged at the lower ends of filling barrels and supplementing barrels, and the filling pipes are fixedly connected with the respective filling barrels or supplementing barrels through connecting parts; a scraping plate is slidably connected to the inner wall of the filling pipe, the top of the scraping plate is arranged in the connecting part, and a driving mechanism is further arranged in the connecting part and used for driving the scraping plate to rotate along the inner wall of the filling pipe. And a scraping plate is arranged in the filling pipe and is in sliding connection with the inner wall of the filling pipe. After filling is completed every time, the scraping plate rotates by a circle along the inner wall of the filling pipe, so that the potassium hydrogen sulfate compound powder remaining on the inner wall of the filling pipe can be effectively scraped off, and the potassium hydrogen sulfate compound powder falls into a potassium hydrogen sulfate compound powder packaging box. Not only is waste avoided, but also the problem of residual potassium hydrogen sulfate compound powder in the filling pipe is effectively solved, and meanwhile, the residual potassium hydrogen sulfate compound powder is prevented from drifting everywhere.

The invention discloses a method for degrading vomitoxin by potassium hydrogen peroxymonosulfate, which comprises the following steps: treating a mixture to obtain a bimetallic modified graphite phase carbon nitride catalyst; the mixture is prepared from urea, CuCl2 (copper chloride) and CoCl2. 6H2O (cobalt chloride); potassium hydrogen peroxymonosulfate is treated with the bimetallic modified graphite phase carbon nitride catalyst, and activated potassium hydrogen peroxymonosulfate is obtained; and degrading vomitoxin in the water body by using the activated potassium hydrogen peroxymonosulfate to obtain a water body degradation result. According to the method disclosed by the invention, the degradation efficiency of DON within 30 minutes can reach 100% under an electro-catalysis coupled PMS system, and the method has wide pH and complex matrix adaptability, is wide in application range, and can be stably and circularly used.

The utility model relates to potassium hydrogen sulfate composite powder processing technical field, concretely relates to a kind of potassium hydrogen sulfate composite powder premixing mechanism, including support seat, the potassium hydrogen sulfate composite powder premixing mechanism further includes: cradle is rotationally arranged on the support seat, mixing tank is rotationally arranged in the cradle, the drive part for driving mixing tank autorotation, several helical blades are fixed in the mixing tank inside circumferentially uniformly, and the mixing area is formed by surrounding between adjacent two helical blades.The utility model can autorotate mixing tank under the driving of drive part after raw material is filled and tightened can cover, and cradle is reciprocatingly deflected along mixing tank axial under the driving of reciprocating driving element, so that raw material flows, rolls mixing in mixing tank, greatly weaken the collision, vibration degree in mixing process of raw material, improve mixing effect.

The invention relates to the technical field of chemical methods, in particular to preparation of a Cu and Ni doped modified MIL-88A material and application of the Cu and Ni doped modified MIL-88A material in activating potassium hydrogen persulfate to degrade PFBS. The preparation method comprises the following steps: performing ultrasonic dispersion and dissolution on fumaric acid, CuCl2. 2H2O, FeCl3. 6H2O and Ni (NO3.) 2.6 H2O, mixing, reacting at specific temperature and rotating speed, and washing and drying to obtain a product; the application comprises the following steps: preparing PMS and PFBS solutions, adding the modified material, and reacting under specific conditions. The problems that existing MIL-88A catalytic active sites are limited, and Fe < 3 + > / Fe < 2 + > valence state circulation conversion is slow are solved.

The application provides a high-potential potassium hydrogen persulfate bottom modification sheet and a preparation method thereof, relates to the field of bottom modification sheets, and comprises the following components in parts by weight: 10-30 parts of potassium hydrogen persulfate composite salt, 2-3 parts of potassium bisulfate, 2-5 parts of potassium sulfate, 1-3 parts of sodium chloride, 1-3 parts of polyethylene glycol 6000, 1-3 parts of polyvinylpyrrolidone, 1-3 parts of magnesium sulfate, 3-5 parts of sodium dodecyl sulfate, 4-10 parts of sodium metaphosphate and 30-60 parts of sodium sulfate. The application also provides a method for preparing the high-potential potassium hydrogen persulfate bottom modification sheet. The application realizes slow dissolution of the drug in water through inclusion technology, continuously releases active peroxide ions, ensures long-acting oxidation and decomposition of the organic matter in the bottom mud, and meets the sustainability requirement of the water product breeding environment for the bottom improvement.

The application discloses a preparation method of o-carboxybenzaldehyde, which comprises the following steps: S1, reacting a phthalide with a potassium hydrogen peroxysulfate complex salt and an alkali in a polar protic solvent to prepare an intermediate; S2, hydrolyzing the intermediate obtained in the step S1 by using a strong protic acid aqueous solution to obtain a product o-carboxybenzaldehyde; and S3, adjusting the pH of the product obtained in the step S2 to 3-4 by using a sodium hydroxide aqueous solution, quenching excessive potassium hydrogen peroxysulfate complex salt by using a saturated sodium sulfite solution, cooling, recrystallizing, filtering and vacuum drying to obtain a final product o-carboxybenzaldehyde. The preparation method of the o-carboxybenzaldehyde can effectively reduce the synthesis cost, avoids the use of dangerous and toxic reagents, effectively reduces the generation of industrial three wastes, and is simple in process, convenient in operation, low in raw material cost, high in yield and beneficial to large-scale industrial production.

The invention discloses sulfur vacancy-rich MoS2 modified enteromorpha biochar and a preparation method and application thereof.The preparation method comprises the steps that enteromorpha powder is evenly dispersed in ultrapure water, potassium hydrogen peroxymonosulfate and ammonium molybdate are added for full reaction, after drying is conducted at the temperature of 60 DEG C, calcination is conducted under nitrogen atmosphere protection, and the sulfur vacancy-rich MoS2 modified enteromorpha biochar is obtained. The sulfur vacancy-rich MoS2 modified enteromorpha biochar obtained by the invention can reduce the concentration of tetracycline in a water body, reduce the content and mobility of tetracycline in sediments, does not need additional energy and oxidizing agents, and is simple in preparation process, low in production cost and suitable for large-scale production and application.

This invention provides a method for preparing high bulk density potassium peroxymonosulfate composite salt. Through multi-dimensional process optimization including multi-point feeding and neutralization, ultrasonic action, crystal guiding agent, heating-heating-heating-cooling, and drying-mixing-sieving, the bulk density of PMS is synergistically improved, and the overall performance of the final product is superior to that of the prior art.

The present application relates to a kind of ammonia content detection method in sulfurous acid-containing solution, belong to material detection technical field.The ammonia content detection method in sulfurous acid-containing solution of the present application, comprising the following steps: (1) adding potassium hydrogen persulfate to be measured sulfurous acid-containing ammonia solution and reacting with sulfurous acid, obtain the test solution;(2) using indigo phenol blue spectrophotometry to determine the ammonia content in the test solution obtained in step (1), i.e.the ammonia content in sulfurous acid-containing solution is obtained.The present application first adds oxidizing agent potassium hydrogen persulfate solution as pretreatment reagent, and reacts with sulfurous acid, eliminates sulfurous acid, while it will not produce interference factors affecting ammonia content determination.The ammonia concentration standard curve obtained by the test method of the present application, the R 2 of fitting curve has reached 0.999, which indicates that ammonia signal intensity and the concentration of standard solution have good linear relationship, further indicating that the ammonia content detection method of the present application has good detection reliability and accuracy.

The utility model relates to powder drying technical field, concretely relates to a kind of agitating mechanism for potassium hydrogen peroxodisulfate drying machine, including the stirring tank being located in the inside of drying machine, the stirring rod being located in the top of drying machine is driven by motor, the lower end of stirring rod is equipped with the helical blade that is inserted into the stirring tank, the top of stirring tank is open structure, the bottom of stirring tank is obliquely arranged, agitating mechanism further includes: the rack being located in the inside of drying machine;Lifting inclined plate being located in the lower end of stirring tank, lifting inclined plate is slidably arranged on the rack by guide rod, when using, by stirring rod drive helical blade rotation to continuously agitate potassium hydrogen peroxodisulfate material, simultaneously by drive portion drive lifting inclined plate continuously rotate, and reciprocating lifting action is carried out on the rack along guide rod, so as to realize that helical blade can agitate potassium hydrogen peroxodisulfate material in stirring tank in different positions, under the joint action of agitation and overturning crushing, guarantee consistency of drying.

The invention relates to the field of electrolytic etching, in particular to a low-pressure titanium alloy surface micropore etching solution which comprises the following components in parts by weight: 10-15 parts of organic acid, 5-10 parts of a PH stabilizer, 10-20 parts of a dispersing agent, 9-40 parts of an etching agent, 3-5 parts of an anisotropic modifier and 50-80 parts of a low-resistance solvent. Wherein the low-resistance solvent comprises water, propylene glycol, a voltage-reducing solvent, a voltage-reducing solute, an organic acid polymer and a small amount of a catalyst. The dielectric constant of the etching solution is reduced to the maximum extent and the conductivity is improved to the maximum extent by using a voltage-reducing solvent (R)-(+)-1-phenylethanol and voltage-reducing solutes ammonium sulfate and potassium hydrogen sulfate; the titanium oxide particles generated in the titanium etching process are dispersed while the breakdown voltage of the titanium anode film is reduced, the resistance of the interface of the titanium alloy and the etching solution is reduced, and the activation energy of the etching reaction is further reduced under the action of the catalyst 2-(aminomethyl) benzoic acid, so that the etching solution has a good pore-forming effect under the low-voltage condition.

This invention discloses a method for preparing a Zr-MOF catalyst containing a Co single-atom site, belonging to the field of metal-organic framework synthesis and advanced oxidation catalysis technology. First, mesoporous Zr-MOFs (NKM-508) are prepared via a solvothermal method using H4TCPB-CH3 ligand and ZrCl4. Based on NKM-508, N,O coordination sites are constructed through aspartic acid amino modification and salicylaldehyde Schiff base reaction, ultimately anchoring a Co single atom to obtain the NKM-508-Co catalyst. This catalyst exhibits good stability, can efficiently activate potassium persulfate (PMS) to generate reactive oxygen species, can rapidly degrade various azo dyes such as eosin Y, orange G, methylene blue, and rhodamine B, and demonstrates excellent recyclability.

The utility model relates to the technical field of production of potassium hydrogen persulfate effervescent tablets, in particular to a filling assembly of potassium hydrogen persulfate effervescent tablets, which comprises a filling table and a station cavity arranged at the top of the filling table, and further comprises a rotating wheel disc rotating in the station cavity, the driving part is used for driving the rotating wheel disc to intermittently deflect at a fixed angle, and the limiting parts are arranged on the rotating wheel disc in the circumferential direction. When a filling bottle at the bottom of the output end of the pneumatic conveying pipe is replaced by the station switching part, the driving wheel can be prevented from being in contact with other parts except the filling bottle, rolling friction can be formed between the filling bottle and the driving wheel, frictional wear between the driving wheel and the filling bottle is reduced, and the filling bottle is prevented from being damaged due to elastic pushing of the spring. The driving wheel can be kept in a good friction state with the filling bottle for a long time, and the problem that the driving wheel slips due to insufficient friction force caused by aggravated abrasion of the driving wheel is avoided.

This invention discloses a multifunctional potassium peroxymonosulfate composite effervescent tablet and its preparation method, belonging to the field of water treatment and disinfection formulation technology. The effervescent tablet is composed of potassium peroxymonosulfate composite salt, microencapsulated citric acid, a sodium bicarbonate / sodium carbonate mixture, sodium chloride, natural saponin extract, magnesium silicate-loaded hydrogen peroxide powder, polyvinyl alcohol-sodium alginate composite binder, magnesium stearate, and anhydrous sodium sulfate. By introducing pH-responsive microencapsulation technology to achieve gradient release of active ingredients, utilizing magnesium silicate-loaded hydrogen peroxide powder to achieve bottom flocculation and continuous oxygenation, and employing natural saponins to enhance biofilm penetration. This invention effectively solves the problems of excessively rapid release, high pH sensitivity, and lack of targeting in existing potassium peroxymonosulfate effervescent tablets, significantly extending the effective action time and improving the sterilization, algae removal, and water quality improvement effects. It is suitable for various scenarios such as aquaculture water bodies, landscape lakes, and emergency disinfection.

The invention discloses a preparation method and application of 2-chloro-1, 1, 1-trimethoxyethane, and the preparation method comprises the following steps: trimethyl orthoacetate, hydrogen chloride and potassium hydrogen peroxysulfate composite salt are mixed for reaction to obtain a mixture containing 2-chloro-1, 1, 1-trimethoxyethane.

A production method of a sulfur-based guniting nitrate-nitrogen-containing synergistic compound fertilizer belongs to the field of compound fertilizers, and comprises the following steps: step 1, heating potassium chloride and 93% concentrated sulfuric acid in a two-stage reaction tank by introducing steam, and carrying out a low-temperature reaction on a mixed liquid phase to obtain a potassium hydrogen sulfate solution; uniformly mixing the potassium hydrogen sulfate solution and phosphoric acid to obtain mixed acid, and introducing the mixed acid and ammonia gas into the tubular reactor in proportion for neutralization reaction to generate mixed slurry containing ammonium phosphate, potassium sulfate and the like; 2, spraying the mixed slurry into a flash tank for flash evaporation and cooling, concentrating, flowing into a mixing tank, and mixing with an ammonium nitrate solution and a fertilizer synergist which are added in proportion to obtain compound fertilizer slurry; spraying the compound fertilizer slurry into a granulator to obtain a granular compound fertilizer, and screening and drying the granular compound fertilizer to obtain the synergistic nitrate nitrogen-containing water-soluble sulfur-based compound fertilizer. The whole-process DCS operation control is realized, the automation degree is high, the product quality is stable and reliable, and the production environment is good.

The invention relates to the field of pesticides, and discloses a preparation method of azoxystrobin, which comprises the following steps: 1) reacting 3-(alpha-methoxyl)-methylene benzofuran-2 (3H)-ketone with alkali in the presence of a solvent to obtain a mixed solution, and removing the solvent to obtain an intermediate a; 2) in the presence of potassium hydrogen sulfate, carrying out transposition reaction on the intermediate to obtain an intermediate b; 3) reacting 2-cyanophenol with alkali in the presence of a solvent and a catalyst to obtain a mixed solution; 4) in the presence of triethylene diamine, adding the intermediate b into the mixed solution, and dropwise adding a solvent solution of 4, 6-dichloropyrimidine for reaction to obtain azoxystrobin, The preparation method of azoxystrobin has the advantages of simple reaction route, high selectivity and conversion rate, few impurities, no wastewater, no CO2 generation, and good industrial application value.

The utility model provides a blanking mechanism of potassium hydrogen persulfate tabletting equipment, which relates to the technical field of potassium hydrogen persulfate medicine production and comprises an equipment cabinet, a protective frame fixedly connected to the top of the equipment cabinet, a mounting plate arranged on the top of the equipment cabinet, a forming die arranged on the mounting plate, and a stamping die arranged above the forming die. An equipment cavity is formed in the equipment cabinet; according to the tablet pressing equipment, tablets are weighed while discharging is conducted through the discharging assembly, the number of the tablets is controlled through weighing, the accuracy of the number of the tablets in each bottle in the bottling process can be greatly improved, the production speed can be increased, and manual intervention is reduced; the puncher pin punches into the die cavity to push out the whole tablet, residues on the inner wall of the die cavity are cleaned, the continuity of whole tablet pressing machining is improved, and therefore the efficiency of a production line is improved.

The utility model discloses potassium hydrogen persulfate powder lifting and conveying equipment which comprises a base, a stand column is vertically installed on the base, and a discharging assembly is installed on one side of the stand column in an up-down sliding mode. The discharging assembly comprises a storage barrel, a rectangular discharging groove is formed in the lower end of the storage barrel, one end of an inner cavity of the discharging groove is provided with an opening, and the top of the discharging groove is connected with the opening in the lower end of the storage barrel; a material box is transversely arranged in an inner cavity of the discharging groove in a sliding mode, the material box is defined by four side walls, the top and the bottom of the material box are arranged in a vertically-through mode, and the size of the cross section of the material box is matched with the size of the cross section of the inner cavity of the discharging groove. An air cylinder is installed on the side, opposite to an opening, of the discharging groove, and an air cylinder telescopic rod stretches into the discharging groove and is fixedly connected with the material box. The quantitative feeding device can realize one-time quantitative feeding of the production line, and can flexibly supply raw materials to the production lines at different heights and positions.

The invention relates to the field of combined type tooth socket cleaning agents, and discloses a combined type tooth socket cleaning agent and a preparation method thereof.The combined type tooth socket cleaning agent is divided into a liquid agent and a solid tablet, and the color can be changed after the liquid agent and the solid tablet are fused; the liquid medicament is prepared from the following components: purified water, propylene glycol, sodium benzoate, Tween, cocamidopropyl betaine, didecyl dimethyl ammonium chloride, sodium pyrophosphate, sodium tripolyphosphate, saccharin sodium, PEG-hydrogenated castor oil, essence, a purple sweet potato extract and lactic acid; the combined tooth socket cleaning agent is characterized in that a solid tablet is prepared from the following components: sodium bicarbonate, citric acid, sorbitol, potassium carruvate (potassium hydrogen persulfate), sodium benzoate, glucanase, amylase, papain, lysozyme, lactase, a PVPVA (Polyvinyl Polyvinyl Alcohol) copolymer, sodium lauryl sulfoacetate and polyethylene glycol. The visual cleaning process is provided through color change, meanwhile, a large number of bubbles can be generated, the liquidity of liquid is improved, and soft dirt on the tooth socket is effectively removed through the physical scouring effect.

This invention relates to the field of chemical method technology, specifically to the preparation of Cu and Ni-doped modified MIL-88A material and its application in the degradation of PFBS by activated potassium persulfate. The preparation involves ultrasonically dispersing and dissolving fumaric acid with CuCl2·2H2O, FeCl3·6H2O, and Ni(NO3·)2·6H2O, then mixing the mixture and reacting it at a specific temperature and rotation speed. The product is obtained after washing and drying. The application involves preparing PMS and PFBS solutions, adding the modified material, and reacting under specific conditions. This invention overcomes the limitations of existing MIL-88A catalytic active sites and the Fe... 3+ / Fe 2+ The problem of slow valence state cycle transitions.

The invention relates to the technical field of microelectronic manufacturing, in particular to a potassium hydrogen persulfate composite salt microetchant additive and application thereof. The potassium hydrogen persulfate composite salt micro-etching liquid additive is prepared from chitosan, polyvinylpyrrolidone, sodium tungstate and tea polyphenol according to the weight ratio of (3 to 7) to (1 to 3) to (0.5 to 1.5) to (0.3 to 0.7). By adding the potassium hydrogen persulfate composite salt micro-etching liquid additive, the use concentration of the potassium hydrogen persulfate composite salt can be controlled to be 2.0% or below, the etching quality of the potassium hydrogen persulfate composite salt is considered, and the roughness Ra of an etched copper surface is smaller than or equal to 0.16 mu m; the width of an interface transition region is less than or equal to 3.2 microns; the oxidation resistance of the copper surface is improved, namely the oxidation time in a dust-free room is greater than or equal to 24 hours; and the copper surface etching rate is greater than or equal to 1.0 mu m / min.

The invention relates to the technical field of pharmaceutical wastewater treatment, in particular to a method for treating chloroquine phosphate wastewater by activating PMS with a platinum nano-catalyst, which comprises the following steps: S1, preparing the platinum nano-catalyst: dropwise adding an ethylene glycol solution of H2PtCl6 into an ethylene glycol solution of NaOH heated in an oil bath, stirring and cooling to room temperature to obtain the brownish black platinum nano-catalyst, the average particle size of platinum nanoparticles in the platinum nano-catalyst is less than or equal to 3 nm; and S2, activating PMS by the platinum nano-catalyst to carry out chloroquine phosphate degradation reaction, namely adding the platinum nano-catalyst and potassium peroxymonosulfate composite salt into chloroquine phosphate wastewater, and carrying out degradation reaction under irradiation of 222 nm ultraviolet light. In order to improve the reaction activity of peroxymonosulfate and further improve the degradation efficiency of chloroquine phosphate in a water body, a UV / PMS system is optimized by adopting a platinum nano-catalyst, and help can be provided for treating wastewater containing chloroquine phosphate.

The invention provides a magnetic sub-nano space confinement complex mineral, a preparation method and application thereof, and a carbamazepine wastewater treatment method. According to the magnetic sub-nano space confinement composite mineral provided by the invention, vermiculite is taken as a body mineral, and the magnetic sub-nano space confinement composite mineral is finally obtained by adopting a multi-element wet ball milling method, ultrasonic treatment and protective atmosphere pyrolysis. The magnetic sub-nanometer space confinement composite mineral has sub-nanometer interlayer domains, sub-nanometer structure pores and high multi-metal reaction active sites, the main components of the magnetic sub-nanometer space confinement composite mineral are sub-nanometer zero-valent copper, sub-nanometer zero-valent iron, sub-nanometer zero-valent cobalt and sub-nanometer zero-valent calcium, the main components of the magnetic sub-nanometer space confinement composite mineral mainly comprise pores smaller than 1 nm, and the main components of the magnetic sub-nanometer space confinement composite mineral are sub-nanometer zero-valent iron, sub-nanometer zero-valent cobalt and sub-nanometer zero-valent calcium. The potassium peroxymonosulfate composite salt can be activated to generate fluorine free radicals, sulfate free radicals, hydroxyl free radicals, superoxide free radicals and singlet oxygen, and the emerging pollutant carbamazepine is efficiently catalyzed and degraded.

The application discloses a salt additive melt blending pretreatment method of PET products. After the PET products are crushed, the salt additive is mixed, melt blending is carried out at 268-275 DEG C for 4-5 minutes, direct cooling is carried out without quenching, crushing and 80 mesh screening are carried out, and a pretreatment product is obtained. The salt additive is selected from one or more of sodium nitrate, sodium nitrite, potassium nitrate, potassium nitrite, calcium nitrate, calcium nitrite, sodium bisulfate, potassium bisulfate, sodium phosphate and potassium phosphate, and the addition amount is 0.5%-1.0% of the mass of the crushed PET material. The method can control the crystallinity increase, improve the powder yield, and the obtained product can be used for subsequent enzymolysis.