91 results about "Contaminated Substance" patented technology

The invention discloses a soil organic pollutant identification method and system based on combination of AI and high-throughput screening, and relates to the technical field of pollutant screening, and the method comprises the following steps: extracting a substance peak from high-resolution mass spectrum data of a soil sample; the method comprises the following steps: establishing an organic pollutant mass spectrum database, extracting spectrogram characteristics and structural characteristics of compounds in the organic pollutant mass spectrum database, establishing a molecular fingerprint prediction model, and establishing a mapping relation from a spectrogram to a structure; constructing a spectrogram vector prediction molecular fingerprint according to the extracted substance peaks, and retrieving by using an organic pollutant mass spectrum database to obtain candidate chemical structures; scoring the candidate chemical structures by predicting the molecular fingerprints, selecting the chemical structures meeting a preset standard, constructing a recognition basis according to the selected chemical structures, and obtaining an organic pollutant recognition result of the soil sample. According to the method, non-targeted intelligent analysis is carried out through cross fusion of artificial intelligence and mass spectrometry, and rapid and accurate identification of soil organic pollutants is realized.

The invention relates to the field of underground environmental pollution prevention and control of refuse landfills, in particular to a comprehensive evaluation method for long-term antifouling performance of a clay separating wall of a refuse landfill, which comprises the following steps: S1, preparing clay separating wall materials with multiple proportions; s2, designing a test according to the long-term anti-fouling performance of the clay separation wall, and obtaining physical and chemical parameters of a clay separation wall material through the test; and S3, setting screening conditions according to the physicochemical parameters, and evaluating and screening the clay separation wall materials with multiple proportions by utilizing the screening conditions to obtain the clay separation wall material with long-term effective antifouling performance. According to the comprehensive evaluation method provided by the invention, the permeability of the clay separating wall, the chemical compatibility with the pollutants and the blocking time of the separating wall to the pollutants are comprehensively considered, so that the long-term antifouling property of the clay separating wall of the refuse landfill is more comprehensively judged, and the screened material can meet the long-term antifouling requirement; and the evaluation accuracy and reliability are greatly improved.

The invention provides a pollutant flux method based on full-section sampling and water quality automatic station data fusion. The method comprises the following steps: coupling full-section sampling and water quality automatic station water pollutant concentration data; assimilating water pollutant concentration data and full section of the water quality automatic station; carrying out full-section water pollutant concentration process distribution; calculating the flux of river water pollutants; the problems that the frequency of full-section sampling data adopted in river water pollutant flux calculation is insufficient, and the change process cannot be reflected are solved.

The invention relates to a photocatalytic self-cleaning water-based paint and a preparation method thereof, which are applied to the field of paint compositions, and the photocatalytic self-cleaning water-based paint realizes self-decomposition of organic dirt and self-inactivation of pathogenic microorganisms by doping a nano-photocatalyst into a water-based system and utilizing a photocatalytic reaction triggered by light energy, and can purify pollutants in air, so that the photocatalytic self-cleaning water-based paint has the advantages of environmental protection and environmental protection. The formula of the coating is optimized, so that the photocatalyst is uniformly dispersed and stably exists in the coating, the coating not only has efficient action under ultraviolet light, but also has certain activity under visible light conditions, and in addition, the coating is a water-based system, is low in VOCs emission, safe and environment-friendly, and has a good application prospect. The self-cleaning antibacterial air purifying coating is suitable for construction and use in a manned environment, creatively integrates self-cleaning, antibacterial and air purifying functions into a whole so as to solve the problems that in the prior art, outer walls and public environment surfaces are difficult to clean and maintain, and a traditional coating lacks active purifying and antibacterial capabilities, and has important practical application value.

The invention relates to the technical field of water quality detection, and discloses a water quality detection device and a detection method thereof. The water quality detection device comprises a pretreatment tank, a decontamination module, an inlet sample module, a filter module, a synchronous belt, a water quality detector and a self-cleaning module. The decontamination module is arranged in the pretreatment tank, the inlet end of the filter module is connected with the pretreatment tank through the inlet sample module, the outlet end of the filter module cooperates with the water quality detector, and the filter module is arranged with a self-cleaning module. The self-cleaning module drives the decontamination module to run synchronously through a synchronous belt. When the self-cleaning module runs, the decontamination module is driven to run synchronously through a synchronous belt. A scraper installed on a chain guides oil film-like suspended pollutants to a surface collection box on the water surface, and pushes deposited sludge-like suspended pollutants to a conical pit at the bottom of the water. A first suction pump is responsible for guiding the oil film-like suspended pollutants to remove the oil film-like suspended pollutants.

The invention relates to the technical field of atmospheric pollutant removal, in particular to an atmospheric pollutant removal device which comprises a removal tank and an impurity removal plate arranged on the inner side of the removal tank, one side of the removal tank is provided with an air inlet pipe, one end of the air inlet pipe is provided with a pressurizing pipe, the pressurizing pipe is connected with the removal tank, and the impurity removal plate is arranged on the inner side of the removal tank. And a preliminary filtering plate is arranged on the inner side of the air inlet pipe. Through the arrangement of the preliminary filter plate, preliminary impurity filtration can be performed on atmosphere conveyed into the removal tank, so that the replacement time of the impurity removal plate can be prolonged, the use cost of the device is reduced, the disassembly and assembly steps between the preliminary filter plate and the removal tank are simplified through the arrangement of the connecting assembly, the replacement efficiency of the preliminary filter plate is improved, and the use cost of the device is reduced. By arranging the filter plate cleaning assembly, dust impurities filtered on the preliminary filter plate can be cleaned, so that the replacement time of the preliminary filter plate can be prolonged, and the removal cost of atmospheric pollutants is reduced.

The invention discloses a toilet excrement low-temperature composting complex microbial inoculant and a preparation method thereof, and relates to the technical field of microorganisms. In order to solve the problem that the composting process is difficult to start under the low-temperature condition (less than or equal to 15 DEG C), and the toilet excrement treatment effect is seriously influenced, the toilet excrement low-temperature composting complex microbial inoculant disclosed by the invention is prepared from stenotrophomonas pavanii (Stennotrophomonas pavanii) R3, pseudomonas pseudomonas (Massiella pseudomonas R4 and pseudomonas kackmussii) R6. The invention further discloses a preparation method of the toilet excrement low-temperature composting complex microbial inoculant, and the preparation method of the toilet excrement low-temperature composting complex microbial inoculant disclosed by the invention has the advantages that the problem that the toilet excrement treatment effect is seriously influenced is solved; the complex microbial inoculant can promote smooth temperature rise starting of the toilet manure compost at low temperature, can accelerate and thoroughly biodegrade pollutants in the toilet manure compost, accelerates the fermentation process of the toilet manure compost at low temperature, improves the quality of compost products, and is applied to the field of low-temperature compost.

The application discloses a method for recovering nickel and phosphorus from electroless nickel plating waste liquid, and the method comprises the following steps: preparing nickel sulfate through extraction and stripping, and preparing iron phosphate through Fenton oxidation and precipitation; compared with the prior art, the method is characterized in that the waste liquid is pretreated, insoluble solid particles in the waste liquid are removed, emulsification of an extractant caused by particles in a subsequent extraction process is prevented, damage to extraction oil is avoided, and the extraction efficiency is ensured; in addition, the extractant used in the method can be recycled, secondary pollution is avoided, and the method is economical and practical; in the method, main pollutants in waste water are all converted into important chemical raw materials, recycling is realized, sulfuric acid and Fenton reagents used are all converted into terminal products, difficulty of end waste water treatment is not increased, clean production is met, the treatment cost is low, the product has high added value, and the method has strong practicability.

The invention relates to an air passage structure of an atomizing device, which comprises a shell and an atomizing core, and is characterized in that the shell is provided with at least one substance storage passage and at least one air passage; and the at least one substance storage channel and the at least one gas channel are mutually independent. According to the atomization device, the substance storage channel and the air channel are independent of each other, so that the atomized substance flowing out of the atomization device is separated from the substance storage channel, a user can suck the atomized substance after atomization, the atomized substance to be atomized cannot be sucked in, and the atomization device is safe and sanitary. In addition, when atomized substances are injected into the substance storage channel, the channel opening of the substance storage channel may be polluted. In addition, due to the fact that the substance storage channel and the air channel are independent of each other, a user can avoid a channel opening of the polluted substance storage channel and cannot make contact with the channel opening of the polluted substance storage channel, and safety and sanitation of the atomization device are further guaranteed.

The invention relates to the field of contaminated soil technical restoration, and discloses an environmental governance contaminated soil restoration method, comprising the steps of: performing in-situ mixing on a contaminated site, using a mechanical mixing device to fully turn over and mix the soil to form a uniform soil mixing system; adding a slender solid auxiliary agent to the mixed soil system, wherein the surface of the slender solid auxiliary agent has a large number of hydroxyl groups; using a sprinkler irrigation system to spray a 1-5wt% multifunctional crosslinking agent solution to the mixed soil system; the crosslinking agent undergoes a crosslinking reaction with clay minerals and hydroxyl groups on the surface of the slender solid auxiliary agent in the soil, and rapidly forms a three-dimensional crosslinked polymer network in the soil solid phase; adsorbing and capturing pollutants in the formed polymer network, and combining the pollutants with soil minerals; achieving efficient fixation and aggregation of pollutants, greatly improving the restoration effect of the contaminated soil, avoiding large-scale soil excavation and transportation, having little interference with the surrounding environment during the restoration process, and having a simple process, convenient operation, and low restoration cost.

The invention relates to the technical field of polluted water source analysis, in particular to an automatic polluted water source sample analysis platform which comprises a measuring cylinder and an adjusting part arranged on the inner side of the measuring cylinder. The adjusting part comprises a floating ball vertically sliding in the measuring cylinder, a linear guide shaft installed in the center of the bottom of the floating ball, an assembling ring coaxially arranged on the periphery of the linear guide shaft and a plurality of linear strips connected between the assembling ring and the linear guide shaft. The plurality of automatic analysis instruments are fixedly mounted on the peripheral side of the assembly ring; the floating ball can be inflated or deflated to be shrunk, and the automatic analysis instrument is used for detecting various pollutants in a polluted water source sample in real time. The problem that errors exist in measurement of the types and the concentrations of pollutants on the liquid level of the polluted water source sample is solved.

A wafer cleaning method based on droplet impact. The method comprises: during the rotation of a wafer, spraying a first cleaning solution onto the surface of the wafer to form a continuous liquid film, such that contaminants are desorbed from the surface of the wafer into the liquid film; and continuously dripping, onto the surface of the wafer, droplets formed from a second cleaning solution, such that the contaminants within the liquid film are dislodged by the continuous impact of the droplets, and leave the wafer as the liquid film flows, wherein the diameters of the droplets range from 14 microns to 30 microns. In the method, during cleaning, droplets, which have diameters ranging from 14 microns to 30 microns and are formed from a second cleaning solution, are continuously dripped onto the surface of a wafer, such that contaminants within a liquid film, especially small-diameter contaminants at the bottom of the liquid film, are dislodged by the impact of the droplets, thereby leaving the wafer as the liquid film flows. By means of the method, damage to micro-patterns on the surface of a wafer caused by the way in which a cleaning solution is sprayed by using a large amount of high-pressure nitrogen in the prior art is prevented. The method is applicable to the cleaning of wafers with a size of 14 nm or below.

The invention discloses an intelligent monitoring method, system and device for wet-process multi-stage internal circulation purification of the Internet of Things, and relates to the technical field of wet-process purification monitoring, and the method comprises the following steps: 1, collecting multi-dimensional circulation purification data in real time, carrying out the data preprocessing, and carrying out the preliminary evaluation of the removal efficiency of pollutants; 2, constructing a cyclic purification directed flow graph, constructing a cyclic purification time sequence prediction model on the basis of the cyclic purification directed flow graph, and judging local pollutant mass accumulation and amplification according to prediction output; 3, based on the real-time local judgment result, risk assessment is conducted on the whole cycle purification process, and grading early warning measures are taken; step 4, performing intelligent visual data governance through multi-dimensional cyclic purification data and a risk assessment result; the problem that pollutants are repeatedly accumulated in subsequent circulation to form local abnormal sources due to the fact that the efficiency of part of treatment units is reduced in the purification process is solved.

The application discloses a preparation method of a specific adsorption material for solving heavy metal endogenous pollution in water bodies. The specific ecological adsorption material is mainly made of ecological materials such as chitosan, natural clinoptilolite and specific adsorption material for specific pollutants in specific areas, and has the function of treating various endogenous pollutants in river channels. The specific ecological adsorption material uses natural clinoptilolite to enhance the mechanical strength of the chitosan hydrogel material, so that it can still maintain a stable cross-linked network structure under the action of a certain hydraulic intensity and external force, and provides a loading site for the specific adsorption material for specific pollution. The chitosan and natural clinoptilolite in the specific ecological adsorption material have strong fixing capacity for heavy metal pollution, and in addition, the natural clinoptilolite also has strong adsorption performance for organic pollutants such as ammonia and nitrogen; and the loading of the specific adsorption material can realize targeted removal of certain pollutants in the environment.

The utility model discloses a roof rainwater treatment device, comprising a roof, a rain collecting trough is arranged at a side position of the roof, a return pipe is arranged at a bottom position of the rain collecting trough, a discard bin is arranged at a right position below the return pipe, a water storage tank is arranged at a right position of the discard bin, a connecting piece is arranged at a middle position between the rain collecting trough and the return pipe, a conical bucket is arranged at a bottom position of the front side of the return pipe, a guide pipe is arranged at a middle position of the bottom of the conical bucket, and a water inlet pipe is arranged at a right position of the bottom of the guide pipe. The discard bin can effectively prevent pollutants from entering subsequent treatment links and protect the environment from pollution, especially in the initial rainwater discard system, it can treat the initial rainwater that may contain more impurities and pollutants, and ensure the cleanliness and effectiveness of the entire rainwater collection system. The water storage tank is a key facility for storing and regulating water volume, and its design needs to take into account the capacity, structural stability and easy management characteristics.

The invention relates to the technical field of underground environmental pollution prevention and control of refuse landfills, in particular to a method for evaluating vertical difference of performance of blocking pollutants by a clay separating wall, which comprises the following steps: S1, measuring physical characteristic parameters of a separating wall material and migration parameters of the pollutants in the separating wall material; s2, performing stress distribution analysis on the isolation wall, and establishing a relational expression based on the physical characteristic parameters of the isolation wall material, the effective stress of the isolation wall and the depth of the wall body; s3, on the basis of the relational expression and the pollutant transport law, constructing a pollutant transport model in the depth direction of the wall body of the isolation wall; and S4, predicting the migration time of the pollutants in the clay separating wall through the pollutant migration model, and evaluating the vertical difference of the blocking performance of the separating wall to the pollutants based on the migration time difference at different depths. According to the evaluation method, accurate evaluation of the vertical difference of the antifouling performance of the isolation wall is realized, and the reliability of the evaluation result and the engineering guidance value are improved.

The present invention provides a method for monitoring leachate leakage in a landfill, the method comprising: S1, obtaining geophysical response characteristics of the migration and diffusion of pollutants in the landfill; S2, performing geochemical characteristic analysis based on the geophysical response characteristics of the migration and diffusion of pollutants; S3, combining the results of geophysical and geochemical analysis to obtain the migration and diffusion law of pollutants in the landfill. The present invention has good effect.

The application discloses a kind of quantitative tidal river section pollutant flux analysis method, comprising the following steps: S1, the equation of concentration variation of pollutant is established;S2, the water flux equation of river section at the time period to be studied is established;S3, based on water flux equation and the equation of concentration variation of pollutant at the section, the pollutant flux equation of river section at the time period to be studied is established;According to the pollutant flux equation, the hourly flux of pollutant at the section at the time period to be studied is calculated.The application can calculate the hourly variation process of pollutant concentration which sufficiently reflects the concentration oscillation caused by reciprocating flow by inputting tidal level and limited concentration data into the equation of concentration variation of pollutant, and based on the hourly variation data of pollutant concentration, the pollutant flux at the section at a certain time period in the future can be calculated hourly according to the pollutant flux equation, and finally the total pollutant flux at the section per day can be counted, which provides scientific support for water safety decision-making of city managers.

The invention relates to a system (100) for treating an urban or industrial effluent (1, 3) comprising a polluting material, said system (100) being configured to receive said urban or industrial effluent (1, 3), to generate a direct current whose current density is between 1.4 A / m² and 7.5 A / m², in particular between 1.7 A / m² and 5.5 A / m², most particularly between 1.75 A / m² and 1.8 A / m², to carry out the electrozonation of the urban or industrial effluent (1, 3) received by ozone partially decomposed with the direct current generated and thus obtain an electrozoned effluent (9), and to carry out a catalytic ozonation of the electrozoned effluent (9) in order to obtain a treated effluent. Figure for the abstract: Figure 1

The invention provides a molybdenum-nickel ore waste residue vegetation restoration method, and belongs to the technical field of mine ecological restoration. The bactericide is added to inhibit the activity of acidophilic oxidizing bacteria, the problem of acid production of the acidophilic oxidizing bacteria is solved from the source, and acidification of the molybdenum-nickel ore waste residues is effectively inhibited; acidic substances in the molybdenum-nickel ore waste residues are neutralized by using alkaline substances in the red mud, the acidity of the molybdenum-nickel ore waste residues is reduced, and the contents of organic matters and nutrients in the molybdenum-nickel ore waste residues are increased and the physical structure of the molybdenum-nickel ore waste residues is improved by using rich nutrient elements and a large number of beneficial microorganisms in the red mud, the sludge and the cow dung; the acidic environment of the molybdenum-nickel ore waste residues is effectively regulated and controlled, the habitat conditions of the molybdenum-nickel ore waste residues are improved, the molybdenum-nickel ore waste residues meet the basic plant growth conditions after being subjected to acidification inhibition, acidity regulation and control and habitat improvement, herbaceous plants are planted, and release of pollutants can be effectively relieved; the method not only effectively controls the influence of molybdenum-nickel ore waste residue pollutant release on the surrounding ecological environment from the source, but also has remarkable social, economic and landscape benefits.

The application discloses a mineral adsorbent and a preparation method thereof. The prepared mineral adsorbent is composed of illite powder, zeolite powder, fly ash, coal gangue powder, dolomite powder and calcium carbonate. The preparation method comprises the following steps: S1, crushing illite, zeolite, coal gangue and dolomite to obtain illite powder, zeolite powder, coal gangue powder and dolomite powder; S2, putting the illite powder, zeolite powder, fly ash, coal gangue powder, dolomite powder and calcium carbonate into a mixer to wet grind to obtain mixed wet materials; and S3, putting the mixed wet materials into a calciner to calcine to obtain the powder-shaped mineral adsorbent. The application has a high removal rate for pollutants in waste gas, can effectively reduce the concentration of dioxin, particulate matter, nitrogen oxides, sulfur dioxide, carbon monoxide, mercury, cadmium, thallium and compounds thereof, antimony, arsenic, lead, chromium, copper, cobalt, manganese and nickel compounds in incineration waste gas.

The invention relates to the technical field of sewage treatment, in particular to a chemical dosing device and method for pollutant removal for water quality monitoring, the chemical dosing device comprises a water quality monitor, the water quality monitor comprises a sensing head and further comprises a bearing main body assembly, the water quality monitor is installed on the bearing main body assembly, and the bearing main body assembly comprises a bearing plate; a chemical adding assembly is arranged on the upper side of the bearing plate, a uniform mixing assembly and a water flowing assembly are sequentially arranged on one side of the chemical adding assembly, the uniform mixing assembly comprises an inserting and mixing assembly and an aeration assembly, the water flowing assembly is used for driving the uniform mixing assembly, and the aeration assembly is used for driving the chemical adding assembly to conduct automatic chemical adding. By arranging the bearing main body assembly, the chemical adding assembly, the inserting and mixing assembly, the aeration assembly and the water flowing assembly, the device has the functions of automatic chemical adding, automatic uniform mixing, automatic aeration, stable chemical adding, circular treatment and combined driving.

The present invention to is directed to a piezoelectric mechanochemical decontamination system. The system includes a piezoelectric material, impact medium, and dynamic impact device having a receiving chamber that receives the piezoelectric material, impact medium, and a PFAS-contaminated substance having a solid-and / or semi-solid-state PFAS. The dynamic impact device causes the impact medium to collide with the piezoelectric material to thereby cause a piezoelectric reaction that converts one-hundred percent of fluorine included in the PFAS-contaminated substance to fluoride and thereby converts the PFAS-contaminated substance to a decontaminated substance that is environmentally safe for disposal. The piezoelectric material is present at a molar ratio of at least 5:1 compared to the fluorine. The piezoelectric material includes boron nitride. The impact medium includes stainless steel or zirconium. The dynamic impact device is a planetary ball mill device, tumbler mill device, attritor mill device, or vibratory ball mill device.

The present invention provides a pollutant flux method based on full-section sampling and water quality automatic station data fusion, comprising the following steps: coupling of full-section sampling and water pollutant concentration data from water quality automatic stations; assimilation of water pollutant concentration data from water quality automatic stations and full-section; full-section water pollutant concentration process distribution; river water pollutant flux calculation; solving the problem that the frequency of full-section sampling data used in river water pollutant flux calculation is insufficient and cannot reflect the change process.

The present invention to is directed to a piezoelectric mechanochemical decontamination system. The system includes a piezoelectric material, impact medium, and dynamic impact device having a receiving chamber that receives the piezoelectric material, impact medium, and a PFAS-contaminated substance having a solid-and / or semi-solid-state PFAS. The dynamic impact device causes the impact medium to collide with the piezoelectric material to thereby cause a piezoelectric reaction that converts one-hundred percent of fluorine included in the PFAS-contaminated substance to fluoride and thereby converts the PFAS-contaminated substance to a decontaminated substance that is environmentally safe for disposal. The piezoelectric material is present at a molar ratio of at least 5:1 compared to the fluorine. The piezoelectric material includes boron nitride. The impact medium includes stainless steel or zirconium. The dynamic impact device is a planetary ball mill device, tumbler mill device, attritor mill device, or vibratory ball mill device.

Provided are a water quality measurement system and a water quality measurement method, which suppress the generation of pollutants from a device structure such as a switching valve and can measure the water quality of treated water of a measurement object with high precision. The water quality measurement system (10) comprises: a first pipe (11) for circulating first treated water; a first branch pipe (11a) branching from the first pipe (11) and having a first valve (V11); a second pipe (12) for circulating second treated water; a second branch pipe (12a) branching from the second pipe (12) and having a second valve (V12); a third pipe (13) connected to the first pipe (11) and the second pipe (12) for circulating the first treated water and the second treated water; and a water quality measurement device (14) for measuring the water quality of the treated water circulating in the third pipe (13).

The utility model relates to the field of air suction and discharge, and discloses a negative pressure type air suction and discharge device which comprises a negative pressure fan, a shell, a filler box and a Pall ring box, one end of the shell is provided with a fan opening, the end, provided with the fan opening, of the shell is fixedly connected with the negative pressure fan, the negative pressure fan is coaxially connected with the fan opening, and the Pall ring box is fixedly connected with the filler box. The air suction end of the negative pressure fan corresponds to the fan opening, the air exhaust end of the negative pressure fan and the interior of the shell are provided with a Pall ring box corresponding to the negative pressure fan, and the opposite face, corresponding to the shell, of the Pall ring box and the interior of the shell are provided with a filler box. In order to solve the problem that polluted air contains a large amount of pollutants and severely affects human health and air quality, the utility model provides the negative pressure type polluted air suction and discharge device, and aims to optimize a polluted air purification structure in the device and reduce polluted air pollution and damage to human bodies.

A method of treating or remediating contaminated material, such as water or soil, comprises contacting such material with asphaltenes. The asphaltenes are preferably produced as a by-product of petroleum refining and, in particular, a by-product of vacuum residua. An adsorbent material comprising such asphaltenes is also provided.

The utility model provides a vegetation structure for soil pollution remediation, and relates to the technical field of soil pollution remediation. Comprising a soil cleaning layer and a pollution layer, a treatment groove is formed in the pollution layer, a stirring assembly is arranged in the treatment groove and comprises a rotating shaft, the top end of the rotating shaft is fixedly connected with the output end of a motor, a fixing block is fixedly connected to the bottom end of the rotating shaft, and stirring blades are fixedly connected to the fixing block; the stirring assembly and the dosing assembly are arranged, a rotating shaft drives stirring blades to start to rotate, the mixing effect of chemical reagents in rainwater is accelerated, holes are formed in the stirring blades, resistance of liquid to a propeller can be reduced, accumulation of substances on the stirring blades is reduced, and therefore the frequency of blockage and maintenance is reduced; and excessive abrasion can be prevented, so that the service life of the stirring blades is prolonged, a dust cover is opened, a chemical reagent is poured into the dosing hopper, and pollutants in rainwater are integrated to be cleaned conveniently.