163 results about "Sulfamethoxazole" patented technology

The invention relates to the technical field of solid waste treatment, in particular to a method for removing antibiotics and resistance genes in aerobic composting of chicken manure. Comprising the following steps: adding a composting auxiliary material into chicken manure to enable the carbon-nitrogen ratio to be (25-30): 1, and adjusting the initial moisture content to 55-65% to obtain an initial composting material; adding persulfate and zero-valent iron into the initial compost material, and uniformly mixing; loading the mixed material into a container for composting; during the composting period, stirring is performed regularly, and the aerobic composting time is 30-40 days. The method has the advantages that the persulfate advanced oxidation technology and the aerobic composting technology are combined, the potassium persulfate and the zero-valent iron are added to serve as the aerobic composting additive, the zero-valent iron can continuously activate the potassium persulfate, persulfate free radicals and hydroxyl free radicals are generated, and removal of antibiotics and antibiotic resistance genes is promoted; high-concentration oxytetracycline, sulfamethoxazole and ciprofloxacin in the chicken manure are effectively removed; and the abundance of antibiotic resistance genes with high risk levels is obviously reduced.

The invention provides a preparation method of an iron and nitrogen co-doped biomass-based carbon material, which can be applied to the technical fields of environmental functional materials and advanced oxidation. The preparation method comprises the following steps: obtaining target charcoal precursor powder; mixing the charcoal precursor powder with soluble ferric salt and urea to form initial mixed powder, adding water into the initial powder, and drying after water bath to obtain mixed powder; and heating and calcining the mixed powder according to preset process parameters to obtain the iron and nitrogen co-doped biomass-based carbon material. The prepared iron and nitrogen co-doped biomass-based carbon material FeOx has a high specific surface area and a rich pore structure, FeOx is uniformly dispersed on a nitrogen-doped carbon substrate, ozone catalytic activity and electron conduction performance are improved, and reactive oxygen species (ROS) can be efficiently generated to degrade sulfamethoxazole.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a preparation method of a Fe-Ni bimetallic catalyst wrapped by a carbon nano tube and application of the Fe-Ni bimetallic catalyst in sewage treatment. The method is realized through the following steps: firstly, dissolving ferric salt, nickel salt and terephthalic acid in a solvent, performing heating reaction after violent stirring, cooling to room temperature, collecting obtained precipitates, performing centrifugal washing, and finally performing vacuum drying to obtain MIL-88B (Fe, Ni); the preparation method comprises the following steps: uniformly mixing MIL-88B (Fe, Ni) powder with melamine, and carrying out pyrolysis to obtain M-Fe-Ni; the bimetallic catalyst (M-Fe-Ni) wrapped by the carbon nano tube prepared by the preparation method disclosed by the invention can be used for degrading organic pollutants, and after being activated by PMS, the M-Fe-Ni shows obvious Fenton-like catalytic activity for degrading the organic pollutants such as sulfamethoxazole and the like. The degradation rate of the synthesized M-Fe-Ni catalyst can reach 99.9% in an extremely short time, and is higher than the degradation efficiency of a single metal catalyst (Fe3C / Fe-coated N-C-9). Besides, due to double reaction sites of the prepared M-Fe-Ni catalyst, the migration distance between active substances and organic pollutant molecules is greatly shortened, the catalytic performance of M-Fe-Ni is remarkably improved, and degradation of organic pollutants under the condition of no secondary metal pollution is facilitated. And a potential method is provided for efficient sewage treatment of the M-Fe-Ni / PMS system.

The invention discloses a P.megaterium strain with stress resistance, growth promotion and environmental restoration functions and application thereof, and belongs to the technical field of microorganisms. According to the present invention, the preservation number of the Pristeria megaterium XT106 provided by the invention is CCTCC (China Center For Type Culture Collection) NO: M 2025912, and the preservation number of the Pristeria megaterium XT106 provided by the invention is CCTCC NO: M 2025912; the Pristia megaterium XT106 provided by the invention is a strain capable of oxidizing manganese to form a biological manganese oxide, and the biological manganese oxide can adsorb and remove heavy metals (Cu, Sb, Pb, Zn, Cd and Cr) and degrade antibiotics (tetracycline and ciprofloxacin). The strain can move, tolerate acid-base, high-salt, phenanthrene and sulfamethoxazole environments, has the capability of generating a biological membrane, and can generate hydrogen sulfide, adsorb / fix and remove heavy metals (Cd, Pb, Zn, Sb and Cu) and promote plant growth.

The invention relates to the technical field of microbial treatment of antibiotic pollution, and discloses an antibiotic degrading bacterium with salt tolerance and capable of degrading sulfamethoxazole at low temperature and application, the strain degrades SMX in a wide temperature range of 10-40 DEG C, the degradation rate of 20mg / L SMX at 10-35 DEG C within 64 hours is greater than 70%, and the degradation rate of 20mg / L SMX at 20-30 DEG C reaches 100%; at the low temperature of 10 DEG C, low-concentration SMX is obviously degraded, and the SMX with the concentration of 5 mg / L can be completely degraded within 16 hours; the MJ2 can still effectively degrade SMX under the harsh conditions that the temperature is low and SMX serves as the unique carbon and nitrogen source, the degradation rate reaches 100% after 66h at the concentration of 5 mg / L, and it is proved that the MJ2 has the unique oligotrophic adaptability. Salinity tests show that the degradation rate of MJ2 to 20 mg / L SMX within 48 hours under the 0.1-2% NaCl concentration is 100%, the degradation rate is still kept at 50% even under the stress of 3% high salt, and remarkable salt tolerance is also shown. In conclusion, the strain MJ2 integrates wide temperature range adaptability, low-temperature high efficiency, oligotrophic tolerance and high salt stability, and has great application value in sulfonamide antibiotic pollution remediation in a complex environment.

The invention relates to a magnetic calcium-iron layered double-metal hydroxide catalyst as well as preparation and application thereof. The catalyst is characterized in that the catalyst is composed of a carrier and layered double hydroxides, the layered double hydroxides are calcium-iron layered double hydroxides, and the carrier is magnetic copper ferrite CuFe2O4; wherein the loading mass percentage of Ca element in the catalyst is 8-16%, and the molar ratio of Ca < 3 + > to Fe < 2 + > is (2-4): 1. Through a specific hydrothermal synthesis method, the catalyst capable of effectively activating PMS to efficiently degrade sulfamethoxazole (SMX) in water is prepared. The preparation process of the catalyst comprises synthesis of copper and iron oxides and subsequent combination of calcium and iron layered double hydroxides, the process not only improves the catalytic efficiency, but also optimizes recovery and recycling of the catalyst through introduction of a magnetic material.

The invention relates to a microbial fuel cell and application thereof, in particular to a photocatalytic / microbial coupled anode microbial fuel cell and application thereof in enhanced degradation of sulfamethoxazole. Aiming at the degradation treatment of typical refractory antibiotics such as sulfamethoxazole, the invention provides a photocatalytic / microbial coupled anode microbial fuel cell which can induce a photo-generated hole generated by a photocatalyst through a biological electric field generated by microbial degradation of pollutants, thereby promoting the separation of photo-generated electron hole pairs of the photocatalyst, and further improving the degradation efficiency of the antibiotics. The problem that photo-generated electron hole pairs of a photocatalyst are easy to compound is solved. Meanwhile, due to the existence of the photocatalyst, the electron transfer between the anode electroactive microorganisms and the anode can be improved through the generation of photo-generated holes, and the extracellular electron transfer of the microorganisms is enhanced. When being used for degrading sulfamethoxazole, the photocatalytic / microbial coupled anode microbial fuel cell disclosed by the invention has an extremely important scientific research value and a wide practical application prospect.

The invention discloses a ZIF-based catalytic ceramic membrane, a preparation method and application of the ZIF-based catalytic ceramic membrane in water treatment, and belongs to the technical field of environmental functional materials and membrane separation. According to the method, a bimetallic precursor solution and an organic ligand solution are adopted, ZIF crystals grow on a ceramic membrane in situ, and then the ZIF-based catalytic ceramic membrane with Co-Co metallic bond and Co-N coordination double active sites is prepared through high-temperature pyrolysis and acid pickling treatment. The prepared ZIF-based catalytic ceramic membrane has high porosity (the specific surface area is greater than or equal to 360 m < 2 > / g) and strong binding force, can stably operate for 3720 minutes or more in a continuous flow reaction, has a removal rate of up to 90% for electronic-enriched pollutants such as sulfamethoxazole and the like, and can resist water quality interference. The process is simple, active sites are controllable, and the method is suitable for high-efficiency low-consumption treatment of industrial wastewater.

The invention discloses a method for enhancing co-metabolism degradation of antibiotics in ammoxidation sludge, and belongs to the technical field of sewage treatment. According to the method, ammonia oxidation sludge is enriched firstly, artificially synthesized sewage is used as inlet water of an ammonia oxidation sludge enrichment reactor, the reactor is operated by adjusting the pH value to be acidic, sulfamethoxazole with different concentrations in the inlet water is treated in stages, co-metabolism of the ammonia oxidation sludge is enhanced, and sulfamethoxazole degradation is enhanced under the long-term operation condition; the ammonia nitrogen removal rate is not obviously inhibited. The method provided by the invention not only can remove ammonia nitrogen in sewage, but also can efficiently and stably degrade antibiotics, and can reduce propagation and invasion of pathogens in nature, thereby protecting biodiversity and stability of an ecological system.

The invention discloses a high-load monatomic catalyst as well as a preparation method and application thereof. The monatomic catalyst is an iron monatomic catalyst, and is characterized in that the mass loading proportion of Fe can be regulated and controlled within the range of 5.16-41.31 wt%, which exceeds all Fe monatomic catalysts reported at present, and overcomes the bottleneck of few metal active sites of the monatomic catalyst. The method has the advantages that a cascade anchoring strategy is adopted, and Fe < 3 + > is assembled into a macromolecular organic framework through the multifunctional effect of a chelating agent. And calcining the obtained precursor in N2 atmosphere at 550 DEG C for 4 hours to obtain the high-quality loaded iron monatomic catalyst. The preparation method is simple, low-cost and environment-friendly. The prepared monatomic catalyst with the high iron loading capacity has more active sites, the activation performance of potassium hydrogen persulfate is remarkably improved, the degradation kinetics of sulfamethoxazole (SMX) is improved, the SMX removal rate of 90% or above can still be kept after the catalyst is repeatedly used for five times, and it is indicated that the catalyst has good activity and durability.

The invention discloses a sea-land interaction zone underground water pollution source tracing method based on multi-pollutant fingerprints, and the method comprises the steps: constructing a fingerprint feature library of eight key pollutants including cadmium, arsenic, nitrate nitrogen, ammonium nitrogen, phosphate, total petroleum hydrocarbon, sulfamethoxazole, pH value and the like; statistical characteristic models of four pollution sources of industrial emission, agricultural non-point sources, oil exploitation and aquaculture are established, Z-Score standardization and a similarity calculation method based on a standard normal distribution probability density function are adopted, comprehensive similarity evaluation is performed in combination with a risk weight distribution mechanism, a similarity threshold value of 0.7 is set to perform pollution source identification and sorting, and the pollution sources are identified and sorted according to the similarity threshold value. And correction is performed by considering environmental factors such as tide, season and geology of a sea-land interaction zone. The method can quickly and accurately recognize the groundwater pollution source of the sea-land interaction zone, the traceability accuracy rate reaches 80% or above, and scientific and technical support is provided for prevention and control of groundwater pollution of the sea-land interaction zone and formulation of an environmental protection policy.

The present invention discloses a method for degrading sulfamethoxazole using QXT-31-Mn, which belongs to the field of sewage treatment technology. QXT-31-Mn was deposited with the General Microbiology Center of the China Culture Collection Administration on December 3, 2024, with the deposit number CGMCC No. 32889 and the deposit address at No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The taxonomic name is Arthrobacter sp. The present invention utilizes QXT-31-Mn to produce a safer and more environmentally friendly cathode material that can efficiently degrade SMX.

The invention belongs to the technical field of concrete slabs, and particularly discloses a fiber-reinforced autoclaved aerated concrete slab and application thereof, the concrete slab comprises the following raw materials by weight: 10-15 parts of quicklime, 60-80 parts of sand, 3-5 parts of gypsum, 15-25 parts of cement, 0.25-0.5 part of fiber, 0.04-0.1 part of aluminum powder, 180-250 parts of water, and 0.1-0.25 part of an active activator; the active exciting agent is prepared from the following raw materials in parts by weight: 8 to 10 parts of sodium butyl naphthalene sulfonate, 4 to 5 parts of sulfamethoxazole, 17 to 20 parts of lauryl sodium sulfate, 6 to 8 parts of polycarboxylate superplasticizer and 25 to 30 parts of graphite soil; traditional constructional steel bars are replaced with fibers, the problem of steel bar corrosion caused by cutting can be solved, meanwhile, the procedures of steel bar mesh splicing and rust prevention are omitted, and the production efficiency of the plate is remarkably improved; besides, the fibers and the active exciting agent are combined for use, and uniform dispersion of the fibers in the green body is ensured, so that the mechanical property, the anti-mildew property and the saltpetering resistance of the concrete slab are enhanced, and the later maintenance cost is remarkably reduced.

The invention belongs to the technical field of environmental microorganisms, and particularly relates to a sulfamethoxazole anaerobic degradation strain SA-9 and application thereof. According to the present invention, anaerobic sludge collected from the vicinity of a farm is subjected to enrichment domestication, separation and purification to obtain the bacterial strain capable of efficiently and rapidly performing anaerobic degradation on sulfamethoxazole (SMX), and the morphological and molecular biological identification results show that the bacterial strain belongs to Cupidesulfavibrio, and is named as Cupidesulfavibrio sp.SA-9; the strain can rapidly degrade SMX under an anaerobic condition, and the degradation half-life period is 7.6 d. The strain disclosed by the invention can be used as a biodegradation bacterium to be applied to bioremediation of SMX polluted environments, equipment and facilities.

The invention discloses a monatomic covalent organic framework material with adjustable iron loading capacity, a preparation method of the monatomic covalent organic framework material and a sulfamethoxazole degradation method. COFs containing bipyridine groups are used as a framework, an anchoring point is provided for iron loading, the iron loading capacity can be regulated and controlled by controlling the adding amount of an iron precursor, and a degradation path is successfully regulated and controlled to be close to 100% high-valence iron; and after calcination, the spinning state of iron is changed, and the PMS utilization rate and the electron transmission efficiency of iron sites are improved, so that the degradation efficiency of new pollutants is remarkably improved. The preparation process has the core advantages of simple equipment, simplicity and convenience in operation, low production cost and the like, and has outstanding environmental compatibility, social and economic values and industrial mass production feasibility while practicing a green synthesis concept.

The invention discloses multi-walled carbon nanotube functionalized sludge biochar as well as a preparation method and application thereof. The method comprises the following steps: firstly, mixing sludge biochar prepared by anaerobic pyrolysis with a multi-walled carbon nanotube, and carrying out ball milling treatment, so as to prepare the sludge biochar functionalized by the multi-walled carbon nanotube; the multi-walled carbon nanotube functionalized sludge biochar prepared by the invention can efficiently activate peroxymonosulfate to degrade trace antibiotics in a water body, and the removal rate of sulfamethoxazole can reach 96% when the reaction is carried out for 60 minutes. According to the method, harmless treatment and resource utilization of the sludge can be realized, and meanwhile, efficient removal of antibiotics in the water body is also realized.

The invention relates to the technical field of biological sewage treatment, and particularly discloses a process for combined treatment of antibiotic wastewater by a compound microorganism-MBR (Membrane Bioreactor) membrane. The invention provides a process for combined treatment of antibiotic wastewater by a compound microorganism-MBR (Membrane Biological Reactor) membrane, which comprises the following steps of: performing directional domestication and toxicity screening on activated sludge through COD (Chemical Oxygen Demand) gradient increase and decrease and removal rate control, and constructing a microbial community resistant to sulfamethoxazole impact; further, a compound bacteria solution composed of marine Arfiv bacteria and Rhodopseudomonas faecalis is introduced, so that synergistic degradation of high COD and sulfamethoxazole is realized under a proper pH condition, and the COD removal rate is still kept at a relatively high level when the concentration is increased; and the tail end is matched with MBR membrane separation, and efficient biodegradation and efficient solid-liquid separation are coupled, so that the sulfamethoxazole and COD in the wastewater are efficiently removed under the conditions of low drug consumption and near neutrality.

The invention discloses a B-doped iron monatomic catalyst, and a preparation method of the B-doped iron monatomic catalyst comprises the following steps: uniformly dispersing urea and a B source in a first solvent to obtain a mixed solution, uniformly mixing a Fe source solution, a polyether F127 solution and the mixed solution, and performing freeze drying to obtain a precursor; and calcining the precursor at 780-820 DEG C in a nitrogen or inert gas atmosphere to obtain the B-doped iron monatomic catalyst. According to the B-doped iron monatomic catalyst, the fenton-like sulfamethoxazole degradation efficiency is remarkably improved, the PMS activation capacity is enhanced, 100% of sulfamethoxazole can be degraded within 5 min, and after 10 min, sulfamethoxazole can be completely mineralized into carbon dioxide and water, so that the degradation efficiency of sulfamethoxazole is improved. The invention provides an effective and feasible method in the field of improving and degrading micropollutants such as sulfamethoxazole and the like, and the method also has relatively good degradation capability on microplastics.

The invention discloses a method for efficiently removing sulfamethoxazole in water by combining trichloroisocyanuric acid and ferrate, and aims to solve the problem that ferrate has a poor degradation effect on antibiotic-containing sewage. The method for removing sulfamethoxazole in water comprises the following steps: 1, dissolving ferrate in a buffer solution with the pH value of 7-9 to obtain a ferrate solution; 2, dissolving trichloroisocyanuric acid in a buffer solution with the pH value of 7-9 to obtain a trichloroisocyanuric acid solution; 3, adding the ferrate solution and the trichloroisocyanuric acid solution into the wastewater containing the sulfamethoxazole; and 4, carrying out a stirring reaction on the wastewater containing sulfamethoxazole at room temperature. The trichloroisocyanuric acid and the ferrate are combined for use, the ferrate can oxidize free chlorine to generate Cl., meanwhile, Cl. Can also oxidize iron ions to generate intermediate products such as Fe (IV), a redox cycle with high reactivity can be formed between the trichloroisocyanuric acid and the ferrate, and the degradation efficiency of sulfamethoxazole is improved.

The invention provides a preparation method of a compound sulfonamide medicinal preparation. The compound sulfonamide medicinal preparation contains a premix prepared from sulfadiazine, sulfamethoxazole, trimethoprim, sodium bicarbonate and a slow-release coating medium. Compared with sulfadiazine, sulfamethoxazole and trimethoprim preparations, the sodium bicarbonate coated compound is high in bioavailability, and after the sodium bicarbonate coated compound is added, caking in urine can be remarkably reduced, and the stability of the preparation is not affected.

The invention discloses a preparation method of a floating type cocatalyst and application of the floating type cocatalyst in Fenton reaction. Nano tungsten sulfide prepared by a hydrothermal method and graphene oxide prepared by a Harmer method are used as raw materials, and the floating type cocatalyst is synthesized by a simple impregnation method. The prepared cocatalyst (MS-WS2-GO) can effectively promote the circulation rate of Fe < 3 + > / Fe < 2 + >, the cocatalysis Fenton-like system can achieve the removal effect of 90% or above on organic pollutants in water only under the condition that 0.5 mM H2O2 and 20 mg / L FeSO47H2O are added, and the system does not generate iron mud. The MS-WS2-GO / Fenton small-scale test system constructed by the invention is continuously operated for 31 days, and the degradation rate of sulfamethoxazole is still kept to be 100% or above. The preparation process of the floating type cocatalyst is mild in condition, simple and convenient to operate and easy to implement.

The invention discloses a preparation method and application of a pyrite carbon nitride composite material. Crushed and sieved natural pyrite and carbon nitride obtained through pyrolysis are fully mixed and subjected to ball milling treatment, and the pyrite and carbon nitride composite material is obtained. The characterization of the ball-milled pyrite carbon nitride composite material through XRD, XPS and the like proves that the natural pyrite and the carbon nitride material are successfully compounded. New bonds such as Fe-N and C-S-C bonds are generated in the ball milling process, electron distribution and an electron path of the catalyst are changed, interface electron transfer is enhanced, and the composite material can be uniformly distributed, the specific surface area is increased and more active sites can be exposed in the ball milling process, so that a very good catalytic degradation effect is achieved, sulfamethoxazole of 10 mg / L can be completely catalytically degraded within 5 min, and the service life of the sulfamethoxazole catalyst is prolonged. And the catalyst and persulfate are less in dosage, the preparation process of the catalyst is simple, and the catalyst has the characteristics of low cost and high efficiency.

This application discloses a cobalt-supported peanut shell biochar / peracetic acid synergistic system for water treatment and its application. The synergistic system includes cobalt-supported peanut shell biochar, peracetic acid, and water. The cobalt-supported peanut shell biochar comprises a peanut shell biochar matrix and cobalt-containing substances supported on the matrix. The cobalt-containing substances include metallic cobalt and / or cobalt oxides. The mass ratio of cobalt-supported peanut shell biochar to peracetic acid is (2-132):1. The atomic ratio of cobalt to carbon in the matrix is ​​(0.2-0.3):1. The cobalt-supported peanut shell biochar has a mesoporous structure with a total pore volume of not less than 0.07 cm³ / g and a specific surface area of ​​not less than 100 m². 2 / g. When this synergistic system is used to treat water containing organic pollutants, especially sulfamethoxazole, it can achieve a removal rate of over 90% within 3-5 minutes. The system maintains high activity and good stability over a wide pH range and in the presence of common anions, exhibiting excellent continuous operation performance. The degradation pathway of this synergistic system is environmentally friendly and can effectively reduce the toxicity of the products.

The invention discloses a hydrogen phagocystis strain SNF1, which belongs to the field of wastewater treatment, the hydrogen phagocystis strain SNF1 is preserved in China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No.35006, and the preservation date is June 25, 2025; the invention further discloses a fermentation compound, the fermentation compound is used for removing sulfamethoxazole in wastewater, and the compound comprises the hydrogen phagocystis strain SNF1 and microalgae; the invention further discloses a method for removing sulfamethoxazole in wastewater, and the hydrophage strain SNF1 is used in the method.

The invention relates to a method for preparing irisflorentin by utilizing belamcandin, and belongs to the technical field of biology. The method comprises the following steps: carrying out C-5 site and C-3'site methylation reaction by taking white belamcandin as a substrate, taking belamcanda methyl transferase gene BcOMT03 gene encoding protein and belamcanda methyl transferase BcOMT33 gene encoding protein as catalysts and taking S-adenosine-methionine as a methyl donor to generate a corresponding glycosylation product. According to the invention, the functions of the two methyltransferase genes BcOMT03 and BcOMT33 in the blackberry lily are identified and verified for the first time, the effect of the two methyltransferase genes BcOMT03 and BcOMT33 in catalyzing the ibullamcandin to produce the irisflorentin is defined, and the blank of research on the biosynthetic pathway of the characteristic component irisflorentin of the blackberry lily is filled up; important information is provided for research on a biosynthesis mechanism of active ingredients of medicinal plants.

This invention discloses a method for degrading sulfamethoxazole and a method for purifying wastewater. The method for degrading sulfamethoxazole involves adding low-valence vanadium oxide and sodium percarbonate to the sulfamethoxazole. The low-valence state refers to vanadium with a valence of +3 or +4. The initial pH of the reaction system is 3–9. The vanadium oxide needs to be acid-washed before use. Vanadium oxide exhibits good catalytic activity towards sodium percarbonate, significantly improving the degradation rate of sulfamethoxazole in a short time. This provides a new solution for the degradation of sulfamethoxazole, fills the gap in the decontamination performance of vanadium-based heterogeneous sodium percarbonate systems, deepens the understanding of reducing agent applications, and can be used for wastewater purification.

The present application belongs to the technical field of wastewater treatment, and particularly relates to a seawater breeding wastewater antibiotic removal method based on oyster shell composite filler. Fine gravel, oyster shell and functional mineral are compounded in a fixed volume ratio of 2:1:1, and are laid in a structure with a limited particle size range and homogeneity without stratification. A salinity-directed salt-tolerant domestication process and a tidal intermittent operation mode of 48h hydraulic retention + 24h emptying and reoxygenation are matched, and salt-tolerant functional bacterial flora of Proteobacteria, Paracoccus and Shigella are enriched. The present application can adapt to a wide range of salinity conditions of 10‰-30‰, relieve high salt inhibition and ion competition, simultaneously and efficiently remove three typical antibiotics of conventional pollutants, sulfamethoxazole, trimethoprim and enrofloxacin, and reduce resistance genes. The sulfamethoxazole removal rate can reach 93.94% under the condition of 30‰ high salinity, the system runs stably and has strong adaptability, and has certain engineering application value and large-scale popularization potential in the field of seawater breeding wastewater treatment.

This invention provides a method for treating wastewater using molybdenum carbide-activated peracetic acid, relating to the field of advanced oxidation water treatment. The method includes the following steps: mixing organic wastewater and peracetic acid in a reactor, adjusting the pH, and then adding molybdenum carbide to initiate the oxidation reaction, rapidly degrading pollutants in the water. The pH of the organic wastewater is preferably weakly alkaline. In this invention, organic pollutants can be oxidized and degraded by active species generated by molybdenum carbide-activated peracetic acid, such as organic free radicals and hydroxyl free radicals. The degradation efficiency of sulfamethoxazole in the organic wastewater is highest at an initial pH of 9, achieving a removal rate of over 95% for different concentrations of sulfamethoxazole within two minutes. It also has a certain removal effect on other organic pollutants such as methylene blue. Molybdenum carbide is a solid powder, making it easily removed from water. This invention requires no additional energy intake, and peracetic acid also disinfects and sterilizes the water.

The invention belongs to the field of analysis and detection, and particularly relates to a sulfamethoxazole and trimethoprim combined trace detection method and application to drug monitoring after hematopoietic stem cell transplantation patient treatment. The detection method comprises the following steps: (1) pre-treating a sample: treating the sample by adopting a releasing agent containing an internal standard substance which comprises an isotope labeled compound; (2) carrying out qualitative and quantitative analysis by adopting liquid chromatography-tandem mass spectrometry, wherein a mobile phase A is an aqueous solution of formic acid; b is methanol. According to the invention, a micro method for detecting the blood concentration of sulfamethoxazole / trimethoprim in a hematopoietic stem cell transplanted child patient by a liquid chromatography-tandem mass spectrometry technology is established; combined determination of sulfamethoxazole and trimethoprim is achieved through a mass spectrum electrospray positive ion multi-reaction monitoring mode, selectivity, residue, accuracy, precision, stability and matrix effect are comprehensively evaluated, and the method is verified completely, stable and reliable.

This invention discloses a method and application for preparing metal-doped composite catalysts based on ZIF-67, relating to the field of wastewater treatment technology. This invention constructs a multi-component synergistic system through the coordination of functional groups on the surface of biochar with ZIF-67 and the electronic coupling effect between rare earth metals and Co. Compared with traditional pure chemical support synthesis methods, this reduces costs and improves environmental compatibility. The metal-doped composite catalyst prepared by this invention is a novel heterogeneous catalyst. Through the electrostatic interaction between the biochar support and Co ions, and the metal-metal bonds formed between La / Ce and Co, it significantly enhances the stability of Co ions, effectively avoiding secondary pollution. The metal-doped composite catalyst prepared by this invention can efficiently activate persulfate to generate reactive oxygen species and synergistically remove multiple pollutants from complex water bodies containing sulfamethoxazole, tetracycline, levofloxacin, and other antibiotics such as methylene blue.