34 results about "Trace pollutants" patented technology

The invention belongs to the technical field of SERS (Surface Enhanced Raman Scattering) detection, and relates to a preparation method of an Ag-Fe3O4 composite SERS substrate and application of the Ag-Fe3O4 composite SERS substrate in monitoring trace pollutants in water. Based on a plasma-semiconductor synergistic enhancement mechanism, cubic Fe3O4 nano particles with exposed {100} crystal faces are synthesized through a hydrothermal method, and the cubic Fe3O4 nano particles and Ag nano particles are subjected to ultrasonic-stirring to construct the Schottky heterojunction. The substrate creatively realizes dual-channel enhancement: the local surface plasmon resonance effect of Ag nanoparticles generates electromagnetic enhancement, the narrow band gap of Fe3O4 promotes photo-induced electrons to be transferred to Ag, an interface electric field is formed, and the polarizability of adsorption molecules is remarkably increased. When the probe is applied to detection of trace pollutants in a water body, the probe molecule RB is anchored on the surface of Fe3O4 through carboxyl, and the HOMO energy level of the probe molecule RB and the valence band top of Fe3O4 generate resonance charge transfer, so that the Raman cross section is improved. The detection limit of RB under 0.25 mW laser is increased by several orders of magnitude compared with that of a single Ag substrate.

The invention provides a DNA enzyme triple-helix molecular switch detection system adaptive to a personal glucometer as well as a preparation method and application of the DNA enzyme triple-helix molecular switch detection system, and belongs to the technical field of biosensors. The DNA enzyme triple-helix molecular switch disclosed by the invention comprises an aptamer containing two nucleotide arm segments and DNA enzyme covalently coupled with a magnetic bead, two nucleotide arm segments of the aptamer and DNA enzyme form a triple helix structure; the two nucleotide arm segments comprise a nucleotide sequence SEQ ID NO.1 at the 5'end of the aptamer and a nucleotide sequence SEQ ID NO.2 at the 3 'end of the aptamer. According to the invention, the flexibility of an original aptamer is limited by using a terminal fixation strategy, the spatial conformation of the original aptamer is stabilized, the affinity of the aptamer to a target is improved, and the sensitivity of the aptamer to the target is improved by using a triple-helix molecular switch containing DNA enzyme and nano-enzyme-gold nanoparticles. Accurate and sensitive detection of trace pollutants in food is realized by measuring the reduction amplitude of the glucose concentration in the detection liquid through a household glucometer.

The application discloses a pollution source detection method and system based on water environment treatment, and relates to the technical field of intelligent detection, and comprises the following steps: emitting laser with a first Brillouin linewidth in combination with a distribution range; adjusting the first Brillouin linewidth based on feedback data of the laser; moving the coordinates of the pollution source based on a pollution diffusion model, a three-point positioning method and pollution parameters of a current detection point; and obtaining new coordinates of the pollution source. The application greatly improves positioning accuracy by detecting changes in trace pollution concentration and combining model inversion, does not need to be close to a pollution area, supports a closed-loop mechanism of detection and updating, can realize three-dimensional positioning by only using three detection points, does not need to densely arrange a sensor network, greatly reduces hardware cost and maintenance burden, is suitable for emergency and rapid deployment, and can maintain stable performance under complex conditions such as wind field changes, terrain undulations and water layering.

The invention discloses a pollution source detection method and system based on water environment treatment, and relates to the technical field of intelligent detection, and the method comprises the following steps: combining a distribution range, emitting laser with a first Brillouin line width, adjusting the first Brillouin line width based on the feedback data of the laser, and obtaining a first Brillouin line width and a second Brillouin line width; and based on the constructed pollutant diffusion model, the three-point positioning method and the pollutant parameters of the current detection point, moving the coordinates of the pollution source, and obtaining the coordinates of a new pollution source. By detecting the concentration change of the trace pollutants and combining model inversion, the positioning precision is greatly improved, a closed loop mechanism which does not need to approach a polluted area and supports detection and updating at the same time is supported, three-dimensional positioning can be realized only by three detection points, a sensor network does not need to be densely arranged, the hardware cost and the maintenance burden are greatly reduced, and the method is suitable for emergency rapid deployment. The stable performance can be kept under the complex conditions of wind field change, topographic relief, water layering and the like.

The application provides a DNA enzyme triple helix molecular switch detection system suitable for a personal blood glucose meter, and a preparation method and application thereof, and belongs to the technical field of biosensors.The DNA enzyme triple helix molecular switch comprises an aptamer containing two nucleotide arm segments and DNA enzyme covalently coupled with a magnetic bead; the two nucleotide arm segments of the aptamer form a triple helix structure with the DNA enzyme; and the two nucleotide arm segments comprise a 5' end nucleotide sequence SEQ ID NO.1 of the aptamer and a 3' end nucleotide sequence SEQ ID NO.2 of the aptamer.The application uses a terminal fixation strategy to limit the flexibility of the original aptamer, stabilize the spatial conformation thereof, improve the affinity of the aptamer to the target, utilize the triple helix molecular switch containing the DNA enzyme and the nano-enzyme-gold nanoparticles, and realize accurate and sensitive detection of trace pollutants in food through determination of the reduction range of the glucose concentration in the detection liquid by using the household blood glucose meter.

The invention discloses a multi-medium drinking water purifying device and system based on layering, and belongs to the technical field of water treatment.The multi-medium drinking water purifying device comprises a tank body, an upper partition plate, a middle partition plate and a lower partition plate are sequentially arranged in the tank body from top to bottom, and a water purifying cavity is defined by the upper partition plate and the inner top of the tank body. Through the independent layered design and serial arrangement of the quartz sand filter cavity, the activated carbon filter cavity and the medical stone filter cavity, the gradient arrangement of the filler with the particle size gradually reduced from bottom to top is matched, and the water conveying direction from bottom to top is combined, so that the problem of filter material migration and mixing caused by water flow impact and backwashing of a traditional single-tank mixed filling filter material is structurally and thoroughly avoided; each filtering cavity independently has a specific filtering function, the quartz sand intercepts suspended matters, the activated carbon adsorbs organic matters and peculiar smell, the medical stone removes micro pollutants and mineralizes the micro pollutants, the filtering interface is clear and stable, an ideal reverse granularity filtering state is always maintained, the filtering period is effectively prolonged, the backwashing energy consumption is reduced, and the stability of the effluent quality is ensured.

The utility model relates to the technical field of cleanliness detection, in particular to a device for detecting cleanliness on line based on an ultraviolet fluorescence method. The device for online detection of the cleanliness based on the ultraviolet fluorescence method comprises a measurement module; the measurement module comprises a light path module and a calibration module; the calibration module comprises a stepping motor, a standard sample bracket and a position detection sensor; the stepping motor is connected with the standard sample bracket and drives the standard sample bracket to rotate, and the standard sample bracket comprises a plurality of cleanliness sample bracket units and channels arranged among the cleanliness sample bracket units; and the position detection sensor is arranged on the standard sample bracket. The light path module carries out detection by adopting an ultraviolet fluorescence method, has high sensitivity to common pollutants such as oil stains and organic impurities on the metal plate strip, can accurately detect trace pollutants, and improves the precision of cleanliness detection.

The embodiment of the invention provides a soil micro-pollutant enrichment device. The soil micro-pollutant enrichment device comprises a soil drilling mechanism, at least the lower portion of the columnar shell is open, and the soil drilling mechanism is arranged on the lower side of the columnar shell and comprises a power device and a rotary scraping plough. The rotary scraping plough comprises a central connecting body and a plurality of coulters; the central connector is connected with an output shaft of the power device; the coulters are connected with the central connector, are uniformly distributed in the circumferential direction and converge at the central position to form a pointed end; each coulter uniformly comprises a main cutter part; the main cutter part comprises a first front cutter surface which is obliquely arranged relative to a coulter rotating shaft, and a first rear cutter surface which is positioned at the bottom end of the coulter and is close to the first front cutter surface; when the power device drives the rotary scraping plough to rotate in the forward direction, a cutting edge formed by approaching the first front cutter face and the first rear cutter face scrapes and ploughs a soil layer on the lower side, and the scraped and ploughed soil enters the columnar containing cavity under the oblique pushing effect of the first front cutter face. And the cross section projection plane of the cylindrical shell is positioned in a rotary scraping working plane formed when the rotary scraping plough rotates.

The invention relates to sewage detection, and particularly provides a water quality trace pollutant automatic monitoring method based on online enrichment and voltage focusing compensation, which comprises the following steps: A1, collecting sewage and conveying the sewage to a pretreatment device; a2, respectively extracting an interior label and an acid, and feeding the interior label and the acid into a sample pool; a3, extracting a mixed solution in the sample pool, and sending the mixed solution to a second quantitative loop; a4, the pure water pushes the mixed liquid in the quantitative loop to enter the activated enrichment unit; a5, eluting the sample to a mass spectrum analyzer by the mobile phase; a6, the sample is ionized, and ions sequentially pass through the incident lens, the multi-pole rod and the emergent lens; obtaining a compensation voltage E according to the mass of the ions and the charge number; the compensation voltage E is applied to an incident lens and an emergent lens, and ions are focused at an inlet of the incident lens and an outlet of the emergent lens respectively; the ions are received by the detector, and information of forbidden objects in the sewage is output after analysis. The method has the advantages of automation, accuracy and the like.

The invention discloses an Ag-coated M composite aerogel SERS (Surface Enhanced Raman Scattering) enhanced substrate as well as a preparation method and application thereof, and the preparation method comprises the following steps: dissolving a silver source, a metal source doped with metal M and a stabilizer in water to form a mixed precursor solution; wherein the doped metal M is selected from one or more of Ru, Cu and Pd; adding a reducing agent solution into the mixed precursor solution, and standing and reacting at room temperature to form gel; and washing the gel, and freeze-drying to obtain the Ag (at) M composite aerogel. The silver-based aerogel (Ag (at) M) doped with different metals M (M is at least one of Ru, Cu, Pd and the like) can be synthesized by adopting a one-step reduction self-assembly method and regulating and controlling the proportion of a precursor, has a three-dimensional porous structure, high specific surface area and excellent stability and signal reproducibility, can have the synergistic effect of electromagnetic enhancement and chemical enhancement when being applied to an SERS enhanced substrate, and can be applied to the SERS enhanced substrate. Therefore, high-sensitivity and high-selectivity in-situ detection of interface trace pollutants, interface water structures and interface adsorption species is realized.

The utility model discloses a tail gas treatment device for vapor deposition furnace, including with the tail gas treatment device body of vapor deposition furnace exhaust end cooperation, the tail gas treatment device body includes condensing mechanism, oil storage tank, bents vent pipe and neutralization mechanism, and bents vent pipe installs in condensing mechanism. The utility model discloses a series of structure's setting can carry out filtration, liquefaction, neutralization and adsorption treatment to tail gas in proper order, through adsorption, can adsorb trace contaminant in tail gas, reaches the effect of further tail gas treatment, through the mode of prefiltering again liquefaction and neutralization, can reduce the risk of bents vent pipe blockage and the frequency of liquid replacement in neutralization mechanism, in addition through the mode of setting two groups of filter screen, when cleaning, only need to switch the air inlet direction and continue to filter, do not need to stop cleaning, thereby can effectively reduce the downtime, improve tail gas treatment efficiency.

This invention relates to waste incineration pollution control technology, aiming to provide a method for controlling pollutants in waste incinerators based on multi-layer coupled temperature measurement technology. The method includes: reconstructing a three-dimensional temperature field by fusing temperature data from thermocouple and acoustic temperature measurement units; monitoring temperature changes in the three-dimensional temperature field in real time using a DCS system; adjusting the combustion status of the waste incinerator using a PLC control system to optimize combustion efficiency and reduce pollutant emissions; and constructing a pollutant correlation prediction model using a recurrent neural network. The real-time acquired incinerator temperature and pollutant detection values ​​are input into the optimized prediction model, which calculates based on the current three-dimensional temperature field distribution, outputting predicted pollutant data and suggested PLC control parameters, thus achieving full-process control of pollutant emissions in flue gas. This invention improves the accuracy of temperature measurement and environmental adaptability within waste incinerators, achieving comprehensive temperature monitoring, feedback control, and trace pollutant emission reduction.

The present disclosure relates to the technical field of shield muck detection, specifically relating to a method for identifying and detecting trace pollutants in shield muck, including the following steps: Step S1. pre-treating shield muck; Step S2. extracting anionic surfactant; Step S3. removing interfering components; Step S4. detecting anionic surfactant; Step S5. calculating anionic surfactant content. The present disclosure directly uses fresh shield muck for extraction, avoiding the decomposition phenomenon of anionic surfactants caused by high-temperature drying in traditional methods, significantly improving the accuracy of detection results, and utilizing a laboratory oscillator to batch process 10-20 samples at once, simplifying operation steps, while reducing reagent consumption, and effectively avoiding the problem of gas leakage in separatory funnels, improving operational efficiency and safety of experimenters, enabling rapid and efficient completion of extraction of anionic surfactants in soil, having broad application prospects.

The invention belongs to the technical field of environmental protection equipment, and particularly relates to an air filter for feed enzyme preparation production fermentation, which comprises a water tank and a controller fixed on one side of the top of the water tank, and further comprises an accelerating tube vertically inserted in the top of the water tank, the inner diameter of the air inlet end of the accelerating tube is larger than that of the air outlet end, and the air inlet end of the accelerating tube is communicated with the controller. A pressure valve is mounted in the accelerating tube; a tail gas inlet pipe is arranged above the accelerating pipe, and a compression accelerating unit is arranged between the tail gas inlet pipe and the accelerating pipe. The device can efficiently separate thalli, hyphae and other impurities in fermentation tail gas, break foam, cool and dehumidify, eliminate filtering blockage, is simple and convenient to maintain, can improve the tail gas impact uniformity and the impurity separation effect, guarantees the purification efficiency, can deeply adsorb water vapor and trace pollutants, avoids filler blockage and airflow short circuit, and improves the service life of the device. And stable up-to-standard emission of tail gas is realized.

The utility model relates to the field of air purification devices, in particular to a protective and isolated air purification device which comprises a first purification cylinder, a second purification cylinder, an air exchange mechanism, a first filtering mechanism, a second filtering mechanism and a filter screen. The second purification cylinder is located at the rear end of the first purification cylinder, a first purification bin is formed in the first purification cylinder, an air exchange mechanism is arranged in the first purification bin and comprises a rotating shaft, a first filtering mechanism is arranged behind the air exchange mechanism, and a second purification bin is formed in the second purification cylinder; a second filtering mechanism is arranged at the front end of the second purification bin, and an HEPA filter screen is arranged behind the second filtering mechanism; according to the air purifier, particulate matter with the particle size larger than 0.3 micrometer in air is filtered out through the HEPA filter screen, then the first filter mechanism and the second filter mechanism are combined together, residual micro pollutants in the air are adsorbed, and finally negative ions are emitted and released through the second filter mechanism so as to actively kill bacteria and viruses in the air.

The invention discloses a high-accuracy air pollution detection device, and relates to the technical field of air pollution detection, the high-accuracy air pollution detection device comprises a detection host, a storage battery is installed in the detection host, a charging port for charging the storage battery is installed on the lower end face of the detection host, and an air inlet assembly capable of realizing dust filtration is installed on the upper end face of the detection host. According to the high-accuracy air pollution detection device, a gas compression function is integrated in a detection process, that is, a detection cylinder with a smaller volume is designed, and gas in a large-volume sampling cylinder is completely pushed into the detection cylinder by using a first piston head, so that the gas is compressed and pressurized in the detection cylinder; the increase of the gas pressure means that the molecular number density of the to-be-detected gas in a unit optical path is increased, an absorption signal of the to-be-detected gas to an infrared characteristic spectrum is enhanced, and the detection capability of low-concentration pollutants and the signal-to-noise ratio of a detection signal are greatly improved, so that high-accuracy detection is realized, and the device is particularly suitable for monitoring trace pollutants at an environment background level.

The utility model discloses a medical sewage treatment system based on antibiotic regulation and control and multistage photocatalysis, which relates to the technical field of medical sewage treatment and is characterized in that organic matters are efficiently degraded and a nitrification process is started through the synergistic effect of clarithromycin and nitrosomonas; the device greatly improves the ammonia nitrogen removal efficiency of sewage, adopts a Z-type heterojunction photocatalyst in the mineralization pool to efficiently degrade micro pollutants such as antibiotics, has a better drug residue removal effect compared with the traditional technology, is matched with a PID controller to realize full-process automatic control, optimizes operating parameters, is strong in comprehensiveness, and is suitable for large-scale popularization and application. The treatment effect is more efficient and thorough.

The application discloses a kind of lake sediment environmental quality comprehensive evaluation and risk factor identification method, comprising: collecting sediment samples of different point of lake, analyzing the pollution occurrence characteristics of traditional pollutants and trace / trace pollutants of sediment, and deducing pollutant sediment facies prediction no-effect concentration data based on existing database;According to the measured pollutant concentration data of pollutant sediment facies prediction no-effect concentration, dimension reduction is three parameters, and a sediment environmental quality comprehensive evaluation equation is established based on the three parameters;According to the equation, the sediment environmental quality comprehensive score is calculated using the measured concentration data, the sediment environmental quality grade is divided, and the main risk factor of sediment is identified.The method of the application can realize fast, accurate and comprehensive evaluation of lake sediment environmental quality and identification of main risk factors.

This invention relates to the field of advanced wastewater treatment and biomass ash reuse, and discloses a method and system for removing trace pollutants from wastewater treatment plant effluent using biomass ash. The method is carried out in a system including an equalization tank, an ozone catalytic reaction tank, and a biochemical buffer tank, and includes: (1) introducing the effluent into the equalization tank for homogenization to obtain reclaimed water I; (2) introducing the reclaimed water I into the ozone catalytic reaction tank for ozone catalytic reaction to obtain reclaimed water II; (3) introducing the reclaimed water II into the biochemical buffer tank to contact with biofilm-coated microbial carriers for biochemical treatment to obtain effluent. The method provided by this invention can achieve efficient removal of trace organic pollutants from effluent, without the addition of chemical reagents, making it environmentally friendly and free from secondary pollution; at the same time, it can improve the biodegradability of the effluent.

The application provides a coupling cathode and anode electrocatalytic flow reactor and a method for treating trace pollutants in water, which comprises a membrane electrode and a gas diffusion electrode, a liquid chamber module is arranged between the membrane electrode and the gas diffusion electrode, and an anion exchange membrane is arranged between the liquid chamber module and the gas diffusion electrode. Compared with the prior art, the application can couple the cathode and the anode to efficiently degrade trace pollutants in wastewater in a continuous flow state by reasonably arranging the positions of the gas diffusion electrode liquid, the liquid chamber module and the anode membrane electrode. The device couples hydrogen peroxide generated by cathode reduction oxygen and active oxygen species generated by anode membrane electrode oxidation to simultaneously degrade organic pollutants in water. The abundant pores on the membrane electrode can intercept and enrich trace pollutants in water, thereby realizing efficient degradation. Compared with a traditional single-side working electrode reactor, the device greatly reduces energy consumption and improves the pollutant degradation efficiency.

The utility model discloses a chemical gas collection and treatment device, which relates to the field of gas treatment equipment and comprises a pretreatment bin, and clean water is arranged in the pretreatment bin and used for dedusting and cooling gas; desiccant particles are arranged in the dehumidification bin, and the dehumidification bin is used for dehumidifying the gas; an alkaline solution is arranged in the chemical absorption bin, and the chemical absorption bin is used for carrying out chemical reaction treatment on the acid gas; an oxidizing agent solution is arranged in the oxidation treatment bin, and the oxidation treatment bin is used for carrying out oxidation treatment on the oxidizable gas; adsorbent particles are arranged in the tail gas purification bin, and the tail gas purification bin is used for carrying out adsorption treatment on trace pollutants in the gas; the device is provided with a plurality of linked bin bodies, each bin body can realize corresponding gas treatment, and the plurality of bin bodies can selectively treat gas through the matching of the connecting pipes, the gas guide pipes and the three-way valves; the chemical gas containing various components can be collected and treated through one set of device, so that the cost is saved.

The invention discloses a pilot plant for removing acidic mine pollution wastewater and an application method of the pilot plant. The pilot plant comprises a box body, a first water tank arranged on one side of the box body, a first-stage iron treatment module and a second-stage manganese treatment module which are arranged close to one side of the first water tank, a second water tank arranged on the outer sides of the first-stage iron treatment module and the second-stage manganese treatment module, and a third-stage sulfate treatment module and a fourth-stage deep treatment module which are arranged on the outer side of the second water tank; the low-cost fly ash ceramsite, steel slag and quartz sand are adopted to replace a high-price matrix, the cost of raw materials is remarkably reduced, and resource utilization of industrial waste residues is achieved; iron, manganese, sulfate and trace pollutants are respectively treated through the four stages of functional modules, and the acidic mine polluted wastewater can be synchronously and deeply treated; through modular layout, the system is high in operation and maintenance and adaptability, is suitable for laboratory tests, can be amplified to field engineering, and is especially suitable for acid mine wastewater treatment of closed-pit coal mines.

The electro-catalytic flow reaction device comprises a membrane electrode and a gas diffusion electrode, a liquid outlet electrode plate is arranged between the membrane electrode and the gas diffusion electrode, an anion exchange membrane is arranged between the liquid outlet electrode plate and the gas diffusion electrode, an anode electrode plate is arranged on the side of the membrane electrode away from the gas diffusion electrode, and a cathode electrode plate is arranged on the side of the gas diffusion electrode away from the membrane electrode, so that the anode and the cathode can be coupled to simultaneously degrade pollutants, improve the degradation efficiency, and no additional supporting electrolyte is needed. The application further provides a parallel structure of the electro-catalytic flow reaction device, which enlarges the working area and improves the pollutant treatment capacity. The application further provides a series structure of the electro-catalytic flow reaction device, which prolongs the treatment time and improves the treatment effect. The application further provides a treatment method, which can deeply treat trace pollutants in sewage through the electro-catalytic flow reaction device.

The invention discloses a graded adsorption type air purification material based on MOF (Metal Organic Framework) as well as a preparation method and application of the graded adsorption type air purification material. The purification material is of a shell-core separated structure, a shell layer is composed of efficient activated carbon and used for roughly adsorbing pollutants, and a core layer is composed of BJUT-5 series MOF materials and used for finely adsorbing trace pollutants penetrating through the shell layer. By means of the design, the adsorption efficiency and selectivity of harmful substances such as formaldehyde and benzene are remarkably improved, the performance is stable especially in a high-humidity environment, and the problem of performance degradation of a traditional material is solved. The MOF material is simple to prepare, controllable in cost and suitable for large-scale production, and can realize efficient adsorption of various pollutants. The material adopting the graded adsorption design is remarkably superior to traditional activated carbon and simple mixed materials in purification efficiency and saturated adsorption capacity. The purification material can be used for air purification of homes, vehicles and public places, and provides longer service life and higher purification efficiency.

The application provides a non-noble metal SERS substrate and a preparation method and application thereof in trace contaminant detection, and the non-noble metal SERS substrate comprises a bottom metal substrate and an organic coating layer covering the surface of the metal substrate in a vertical direction; wherein the metal substrate has a nano-pillar array structure, and nanoscale gaps are formed between the nano-pillars; and the organic coating layer and the underlying metal substrate jointly form a double-layer structure for synergistically enhancing SERS activity. The substrate has excellent SERS activity and signal uniformity, and through combination with a portable Raman spectrometer, rapid, high-sensitivity and quantitative detection of microplastics and organic small molecule contaminants in environmental water samples can be realized. The application is particularly suitable for on-site rapid detection, and solves the problems of strong dependence on noble metals, high cost and complex operation in the prior art.

The invention provides an advanced treatment method and system for stainless steel cold rolling acidic wastewater, and the method comprises the following steps: carrying out neutralization and precipitation treatment on the stainless steel cold rolling acidic wastewater by using a modified desulfurized fly ash agent to obtain a primary treatment solution; and conveying the primary treatment liquid to a modified electric furnace steel slag adsorption tower provided with a modified electric furnace steel slag filler for adsorption treatment to obtain a secondary treatment liquid. According to the advanced treatment method and system for the stainless steel cold rolling acidic wastewater provided by the invention, various pollutants such as fluorine ions, COD (Chemical Oxygen Demand), total chromium, total iron and suspended solids in the wastewater can be efficiently removed by using the modified desulfurized fly ash agent; and the modified electric furnace steel slag filler with excellent adsorption capacity is used for adsorption, so that residual trace pollutants in the primary treatment liquid can be removed, and the effluent quality is ensured to be stable and reach the standard, so that the effluent can be directly discharged or recycled, and the environmental pollution can be reduced.

The present application relates to the technical fields of preparation and application of functional materials, in particular to a fullerene / metal organic framework loaded with acetylcholinesterase, a preparation method and application thereof. 60 @PCN-222(Fe) nanoscale enzyme, based on its class oxidase OXD and class peroxidase POD activity, proposes a self-cascading amplification strategy without external energy input. Subsequently, the molecular interaction is used to combine C 60 @PCN-222(Fe) with acetylcholinesterase AChE, and further develop AChE / C 60 @PCN-222(Fe) enzyme-nanoscale enzyme array flow reactor. The sensor realizes the parallel real-time detection and distinction of multiple organophosphorus pesticides, and the sensor has a wide linear range, high sensitivity and low detection limit. The present application provides a promising strategy for the design of nanoscale enzyme and trace pollutant detection system, and the sensing platform has stable performance, low price and is convenient for commercial application.

The utility model belongs to the field of Internet of Things, and provides an Internet of Things monitoring system, which comprises a detection module and a cloud module, the detection module comprises a sensor unit, a signal amplification and processing unit, a data processing unit and a communication unit, and the cloud module comprises a cloud server. The sensor unit is triggered by ambient air based on the photoelectric detector to generate a current signal; the signal amplifying and processing unit comprises a transimpedance amplifier and an inverting amplifier, the transimpedance amplifier is used for converting a current signal into a voltage signal, the inverting amplifier is used for amplifying and filtering the voltage signal, and the compensation capacitor and the first feedback resistor are connected to the transimpedance amplifier in parallel; the high-frequency noise of the trans-impedance amplifier is reduced and the frequency response is stabilized; the data processing unit is used for analog-to-digital conversion of the voltage signal into a digital signal. Through the combination of the trans-impedance amplifier and the multi-stage amplification structure, high-precision amplification of weak signals of the sensor is realized, and the concentration of trace pollutants in ambient air can be effectively detected.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method, system, and application of alternating magnetic field electrocatalytic degradation of trace pollutants in water. It is particularly suitable for the advanced treatment of municipal wastewater and aquaculture wastewater containing trace pollutants such as antibiotics, endocrine disruptors, pesticide residues, pharmaceuticals, and personal care products, as well as for the upgrading and renovation of industrial wastewater. High removal efficiency is achieved through the synergistic effect of alternating magnetic field and electrocatalysis, achieving removal rates of over 90% for various typical trace organic pollutants, with some pollutants approaching 100% removal. Compared to traditional non-magnetic field electrocatalysis methods, alternating magnetic field electrocatalysis improves the removal rate by 20%–30% and the total organic carbon removal rate by 15%–25%. Especially for recalcitrant antibiotics and endocrine disruptors, this invention demonstrates significant treatment advantages.

The application discloses an online water quality intelligent monitoring method and system and electronic equipment, and particularly relates to the technical field of water quality monitoring; the method is characterized in that: by collecting water turbulence flow field data and pollutant concentration distribution data in real time, characteristic information of the turbulence flow field and the pollutant concentration is extracted, the influence of vortex motion of different scales in the turbulence microstructure on the stability of the pollutant concentration and the fluctuation law of the pollutant concentration are analyzed, the weakening effect of the disturbance of the water turbulence microstructure on the real-time monitoring sensitivity of trace pollutants is revealed, and a real-time sensitivity correction model is constructed, so that the real-time and accurate correction of the pollutant concentration detection data of the water quality monitoring sensor is realized, and finally the online corrected water quality monitoring result is obtained, which can effectively improve the detection accuracy of the trace pollutant concentration monitoring in a complex turbulence environment.