61 results about "Pollution management" patented technology

The invention concerns a device for purifying a gas effluent containing contaminants, comprising: a reactor including at least an inlet for the gas to be purified and at least an outlet for the purified gas ; at least an ultraviolet or visible radiation source; and at least a support element arranged inside the reactor and coated with a catalyst forming an exposed catalytic surface capable of oxidising at least partly the contaminants under the action of the ultraviolet or visible radiation. The reactor comprises at least two obstructing means, each of said obstructing means obstructing partly the flow of the gas effluent from said inlet up to said outlet and generating a turbulent gas zone on its downstream side, and a catalytic surface is arranged in each turbulent gas zone so that the turbulent gas flow is incident on said catalytic surface. The invention is applicable to disinfection and pollution management of air and industrial gases.

The invention provides a non-point source pollution calculation method based on a remotely sensed image element. The method comprises the following steps of: 1, constructing a land utilization database and a vegetation coverage database; 2, constructing a soil type database, a soil nitrogen and phosphorus attribute database and a gradient and slope length geographic space database; 3, constructing a farmland nitrogen and phosphorus balance amount space database; 4, calculating dissolved state non-point source loads and adsorption type non-point source loads of non-point source pollutants under different pollution types according to database information in the steps from 1 to 3 and the pollution types; and 5, calculating a total amount of non-point source pollutants in a river according to the dissolved state non-point source loads and the adsorption type non-point source loads. By the method, under the condition that a data condition is limited, a non-point source pollution space distribution feature and a source intensity feature can be quickly obtained based on remotely sensed data; effective pollution monitoring measures can be supplied to a pollution prevention, treatment and management department; and important technology support can be supplied to flow domain pollution management.

A method for detecting the operating mode of a hybrid vehicle using roadside cameras, said method including the analysis of thermal images of parts of the vehicle and / or exhaust fumes, in combination with associated images of the number plates obtained using visual camera(s) operating in synchronism with said thermal camera and used for vehicle make inference and driver identification. The inferred make of the car is used for aforementioned analysis of thermal images. In a variant, the method is used to verify an operating mode reported by, or obtained from information reported by, the vehicle itself. The method can be used in a pollution management system for calculating financial charges to vehicle drivers in a low-emission zone of a Smart City for example.

The invention discloses a preparation method of a graded-structure BiOI / Bi2MoO6 composite visible light catalyst and belongs to the technical field of environment pollution management. The preparation method is characterized by comprising the following steps: firstly, preparing Bi2MoO6 from Bi(NO3)3.5H2O and (NH4)6Mo7O24.4H2O through a solvent thermal method under the condition of a glycol / absolute ethyl alcohol mixed solvent; and by utilizing a chemical deposition method and taking Bi(NO3)3.5H2O as a bismuth source, KI as an iodine source and glycol / water as the mixed solvent, preparing the graded-structure BiOI / Bi2MoO6 composite visible light catalyst for visible light catalytic degradation of an endocrine disrupter bisphenol A and a dye pollutant methylene blue MB. The preparation method has the advantages of simplicity in operation, stable performance, high degradation efficiency, no other pollutants in a preparation process and the like, and has very high practical values and application prospects.

The invention concerns a system for assisting regeneration of pollution management means (1) integrated in an exhaust line (3) of a diesel engine (4), wherein the engine (4) is associated with common ramp means (7) injecting fuel into the cylinders thereof, based on at least one post-injection and adapted to implement, in isocouple, through modification of the engine operation control parameters, at least two strategies called level 1 and level 2 and a second regeneration strategy including level 1 strategies and a sequence alternating level 2 and over-calibrated level 2 strategies, enabling different thermal levels to be achieved in the exhaust line. The invention is characterized in that it comprises means (8) for analyzing the vehicle running conditions and means (8) for comparing same to threshold values, to implement the first regeneration strategy for running conditions higher than the threshold values or the second regeneration strategy for running conditions lower than the threshold values.

The invention relates to spindle-shaped metal organic hybridized compound grains MIL-88B(Fe) and a preparation method thereof and belongs to the field of preparation of novel nano photocatalytic materials. A used material synthesis method is a solution method. The method comprises the following specific steps: firstly, dissolving ferric chloride and terephthalic acid (tp) into a mixed solvent of N,N-dimethylformamide (DMF) and acetonitrile; taking a mixed turbid solution to react in an oil bath pot; and centrifuging, washing and drying the obtained product to obtain dark red powdery solids, namely the nano photocatalytic materials. The preparation method provided by the invention is simple, convenient and feasible; and the obtained nano photocatalytic materials have stable performance, have a good degradation performance on organic dyes including Rhodamine B and the like, and have a good application prospect in the fields of environment protection, pollution management and the like.

The invention discloses a humic acid type porous adsorption material and a preparation method and application thereof, and belongs to the technical field of preparation of materials and environmentalmanagement. The preparation method disclosed by the invention has the beneficial effects that the humic acid type porous adsorption material is prepared by using and dissolving raw materials of potassium humate and natural macromolecules, then adding a crosslinking agent and an initiating agent, dropwise adding polyethylene glycol under a heating condition, stirring and drying; the method is simple to operate; the raw materials are easy to obtain; the requirements on equipment are low; and the cost is low. In terms of the prepared porous adsorption material, humic acid is macromolecular organic acid composed of aromatics and multiple functional groups thereof, is naturally degradable, and has good biological activity and the functions of adsorption and absorption, complexation, exchange and the like, so that a formed porous structure is capable of enhancing the adsorption and complexation effects on heavy metal ion particle matters; when the porous adsorption material is applied to pollution management and ecological restoration, heavy metal in a water body and soil can be adsorbed; and after adsorption is finished, the porous adsorption material can be used as a soil fertilizer, and can improve soil structure, restore ecological balance and reduce chemical pollution.

The invention relates to agricultural mulching film made of bamboo fiber and waste silk non-woven fabric, and belongs to the field of film. The agricultural mulching film made of the bamboo fiber and waste silk non-woven fabric mainly solves the technical problems that existing agricultural film is difficult to be degraded, permeability of soil is seriously reduced, great difficulties are brought to farming, sowing and growth of crops, and serious white pollution is caused. A preparation method of the agricultural mulching film made of the bamboo fiber and waste silk non-woven fabric comprises the steps that a prepared composite adhesive is evenly sprayed on composite fibers of the bamboo fibers and waste silk fibers, desulfurization is conducted through a sodium hydroxide aqueous solution, bleaching, softening and drying are conducted in sequence, prepared agricultural film which is made of plant fibers can be completely degraded after being used for three months, soil pollution Management of users, information categories, map images and information auditingcaused by residues can be effectively avoided, green environmental protection is achieved, the cost is low, and the agricultural mulching film made of the bamboo fiber and waste silk non-woven fabric can be used and promoted in a large area.

The invention relates to the field of river surge treatment, in particular to a method for preparing a dominant microbial solid bacterial agent for river water pollution control, which includes acclimating microorganisms, preparing a composite bacterial liquid, selecting a carrier and preparing a solid bacterial agent. On the one hand, before the preparation of the solid bacterial agent, the microorganisms were domesticated, and the obtained microbial mixture had an absolute advantage in enriching and cultivating the target bacteria, and the concentration was high. The microorganisms in the solid microbial agent could well colonize in the water body. It is conducive to improving the quality and efficiency of subsequent water pollution treatment; secondly, the solid bacterial agent is prepared by adsorption or embedding, the environmental requirements are not harsh, the reaction conditions are mild, and the operation is simple. The microorganisms in the composite bacterial liquid can be combined with the carrier The combination is tight, and the concentration of microorganisms in the prepared solid bacterial agent is high; in the third aspect, the carrier has a particle size of 1-3mm and a density of 1.1-1.5g / cm 3 The special ceramsite or molecular sieve carrier for porous organisms is non-toxic and has good biocompatibility, which is conducive to material transmission and exchange.

The invention discloses a household indoor multifunctional air purifier. The household indoor multifunctional air purifier comprises an upper air purification chamber and a lower air purification chamber, wherein the upper air purification chamber is provided with an air inlet; a filtering assembly is arranged at the air inlet; a mute suction ventilator is arranged on the rear part of the filtering assembly; a hole is formed in the lower part of the upper air purification chamber and the upper air purification chamber is communicated with the lower air purification chamber by the hole; the lower air purification chamber is provided with air treatment equipment; an air outlet is formed in the lower air purification chamber. The household indoor multifunctional air purifier has a wide application prospect in pollution management of indoor various air media; an oxygen generation device is additionally arranged so that old people, children and pregnant women feel very comfortable when breathing maritime similar air beside the purifier, in the aspect of improving the indoor air quality, particularly under the condition that indoor air is not circulated in winter; the purification technology realizes the aim that the requirements on living conditions by people are high are met.

The invention belongs to the technical field of evaluation of heavy metal content of soil in a mining area and discloses an evaluation method and system for heavy metal content characteristics and potential risks of the soil. The potential risks of the soil in the Ili mining area are analyzed through collecting a soil sample and chemically determining the heavy metal content of the soil by adopting a single factor index method, a Nemerow comprehensive pollution index method and a geoaccumulation index method. According to the evaluation method and system, disclosed by the invention, six heavymetal pollution degrees of the soil are as follows in sequence: the pollution degree of Dadamutu coal mine is Cd>Pd>Zn>Cr>Cu>Ni; the pollution degree of Chinghua coal mine is Cd>Pd>Zn>Cu>Cr>Ni; the pollution degree of Tichanggou coal mine is Cd>Pd>Zn>Cu>Cr>Ni; the heavy metal accumulation condition in the soil of the three mining areas is the Tichanggou coal mine>the Chinghua coal mine>the Dadamutu coal mine. The evaluation method and system, disclosed by the invention can provide theoretical basis for post-period pollution management of heavy metal pollution of the soil in the Ili mining area, repairing of heavy metal polluted soil in the Ili mining area and ecological environment protection work of Ili.

The invention provides a particulate matter inorganic component and organic identifier-based refined source analysis method. The method comprises the steps of collecting a particulate matter sample; measuring the content of inorganic components and organic components in the particulate matter sample; according to obtained content data of the inorganic components, performing source analysis on a particulate matter receptor by utilizing a factor analysis model to obtain a source spectrum matrix and a source contribution matrix; calculating a related coefficient R1 of the organic component content and the source contribution matrix, screening the organic components according to the related coefficient R1, and identifying the organic components as organic identifiers; and according to the organic identifiers and the content data of the inorganic components, performing refined source analysis on the particle matter receptor by utilizing the factor analysis model to obtain the source spectrum matrix and the source contribution matrix. According to the source analysis method, by utilizing a relationship between the organic components and the inorganic components in a particular matter, and a relationship between the organic components and the analysis contribution of the inorganic components, the organic identifiers are identified; conventional components and the organic identifiers are combined for performing refined analysis; and refined demands of atmospheric particulate matter pollution management on source analysis are met.

The invention relates to a system and a method for purifying water area surface source pollution. The system comprises a primary purification unit, a slow filter tank unit, a deep purification unit and a biological purification unit which are arranged along a first direction from a road surface to a water area in sequence. According to the system, a road landscape design idea is adopted and the road surface runoff biological treatment system suitable for different environments and region conditions is formed, so that pollutants in a runoff can be effectively removed from sources the influences to the peripheral biological environment, caused by road development, are reduced and lowered to the greatest extent, and furthermore, the pollution to receiving water, caused by pollutants generated by washing the road surface through rainwater, is effectively controlled, and the road landscape effect is improved. The system and the method are applicable to prevention of river and lake surface source pollution and are particularly suitable for city and suburb water runoff pollution management.

The invention discloses a puncturing management type farmland pollution management device. The puncturing management type farmland pollution management device comprises a bottom plate, a fixed plate and puncturing rollers, wherein a traction hook is arranged at the left end of the bottom plate; a chemical medicament box is arranged at the upper end of the bottom plate; a rotary wheel is fixed at each of four corners of the lower end of the bottom plate through a fixing column; four retractable rods, which are distributed in a rectangular array, are fixed at the upper end of the fixed plate; the upper ends of the retractable rods are fixed at the lower end of the bottom plate; an air cylinder is fixedly arranged at the central position of the upper end of the fixed plate through a push rod;the upper end of the air cylinder is fixed on the lower surface of the bottom plate; a liquid guide box is arranged in a fixed plate main body; the upper end of the liquid guide box is communicated with the chemical medicament box through a second hose; the four puncturing rollers are arranged and are distributed at the lower side of the fixed plate in an array; the puncturing rollers, which aredistributed in the array, are connected through a belt; the puncturing rollers are arranged at the lower end of the fixed plate. According to the puncturing management type farmland pollution management device provided by the invention, a farmland is managed under the condition that a soil layer structure is not damaged; a soil management speed is rapid and a soil management effect is good; meanwhile, the soil fertility is prevented from being influenced.

The invention relates to an atmosphere fine particulate matter pollution management method and system based on a smart power grid for a central city. In order to solve a city haze problem, an electrostatic precipitation device is arranged on an urban area green land of the central city; the electrostatic precipitation device is provided with a super-capacitor electric storage power supply device for obtaining off-peak electricity from the smart power grid; the electrostatic precipitation device is arranged at the center of the green land; a plurality of circles of two or more types of green vegetations which are distributed at intervals are planted at the periphery of the electrostatic precipitation device on the green land. The electrostatic precipitation device is provided with a dust particle collection groove; the dust particle collection groove is located above the highest point of the green land; the green land is provided with a spraying device which is synchronously started when the dust particle collection groove discharges dust; the spraying range of the spraying device covers the highest point of the green land and adjacent regions. According to the atmosphere fine particulate matter pollution management method and system, off-peak electricity surplus advantages of the power grid can be utilized sufficiently; new domestic demands of non-pollution electrical energy are expanded and a large output of environmental benefits is obtained at less manpower and electrical energy investment; the operation cost is low and a precipitation effect is good, not only can discharged byproduct ozone be digested by the surrounding vegetations but also discharged dust particles can be used for nourishing the surrounding vegetations on spot, so that the maintenance cost is less, the implementation is convenient, and the city haze weather can be managed effectively.

The embodiment of the invention provides a smart city raise dust pollution management method and an Internet of Things system, the method is executed by a management platform, and the method comprises the following steps: obtaining one or more environmental data of a to-be-detected area through a sensing network platform, and obtaining one or more street data associated with the environmental data; the environment data at least comprises dust raising data representing dust raising information in the air; based on the environment data, judging whether the to-be-detected area has flying dust pollution or not; if yes, the position of at least one dust pollution source is determined based on the environment data and the street data, and dust pollution is treated. The Internet of Things system comprises a user platform, a service platform, a management platform, a sensing network platform and an object platform.

The invention discloses an industrial waste gas pollution management device. The industrial waste gas pollution management device comprises a machine body, wherein a treatment cavity is arranged in the machine body; a sliding groove is formed in a bottom wall of the treatment cavity in a communication manner; a piston block capable of sliding up and down is mounted in the treatment cavity; the sliding groove is internally provided with a first sliding block which can slide up and down and is fixedly connected with the piston block; a thread groove with a downward opening is formed in the firstsliding block; a first thread rod is mounted in the thread groove in a matching manner; a first transmission cavity is arranged below the sliding groove; a first rotary shaft is rotatably mounted between the first transmission cavity and the sliding groove; the upper end of the first rotary shaft is fixedly connected with the first thread rod and the lower end of the first rotary shaft stretchesinto the first transmission cavity and is fixedly provided with a first bevel gear; a drying cavity is arranged at the right side of the treatment cavity; first through grooves which are mutually communicated are formed in the upper part of the drying cavity and the upper part of the treatment cavity; a second transmission cavity, which extends upward, is formed in a left end wall of the treatmentcavity.

The invention discloses an enterprise green production management and control method and system based on big data, and belongs to the field of data processing, and the method comprises the steps: obtaining an enterprise production chain of a target enterprise through accessing an enterprise information management terminal, obtaining a plurality of production chain nodes, analyzing the correlation, obtaining a plurality of correlation coefficients, and storing the correlation coefficients in a database; pollution index analysis is carried out on each production node in a plurality of production chain nodes, a plurality of pollution indexes are output, a response objective function is established based on a plurality of correlation coefficients as input variables and the plurality of pollution indexes as input quantitation, and a plurality of iterative pollution indexes are output. And according to the plurality of iterative pollution indexes, positioning pollution management and control nodes in the enterprise production chain for pollution reduction management and control. The technical problems that the production process of an enterprise cannot be accurately analyzed, accurate pollution indexes cannot be obtained, and the pollution control quality is low are solved. The technical effect of accurately controlling the global pollution index by adjusting the local production chain is achieved.

The invention relates to the field of pollution management and discloses a method for digesting bottom mud of black and odorous river channel through a microorganism preparation. The microorganism preparation is added into a black and odorous river channel; the microorganism preparation is prepared by mixing CQ1, CQ2 and CQ3 according to the volume ratio of (1 to 3) to (1 to 3) to 1; the CQ1 is amixed bacterium agent of bacillus subtilis, bacillus aureus, acinetobacter, psychrobacter, acinetobacter and pseudomonas strains; the CQ2 is a mixed bacterium agent of arcobacter, acinetobacter and shewanella oneidensis strains; and the CQ3 is a mixed bacterium agent of aeromonas, ralstonia eutropha and ralstonia eutropha strains. By adopting the method disclosed by the invention, the problems that original biological population structures and living conditions of rivers and lakes are damaged in a traditional dredging manner, a self-cleaning function is weakened so that negative influences onecological restoration are caused and secondary pollution is easy to cause, principal and secondary aspects cannot be treated at the same time, people are likely to be disturbed and the management price is high are solved.

The invention discloses an electrolysis / ultraviolet device for treating chemical nickel-plating wastewater, and relates to a device for treating chemical nickel-plating wastewater. The invention aims to solve the technical problems of high operation cost, large energy consumption, secondary pollution, easy pollution of an ultraviolet lamp tube, complex management and unstable treatment effect of the existing chemical nickel plating wastewater treatment method. After the chemical nickel-plating wastewater enters an electrolytic bath, Cl <-> in the wastewater is converted into Cl2 through anodic oxidation, the Cl2 is further hydrolyzed into HOCl / OCl <->, the HOCl / OCl <-> can be converted into hydroxyl free radicals and active chlorine groups through irradiation of an ultraviolet lamp, complex-state metal can be converted into free-state metal, meanwhile, the degradation effect on the complex-state metal can also be enhanced through anodic oxidation and ultraviolet photolysis, through co-oxidative degradation and mutual cooperation, the complex breaking effect is greatly improved, complex nickel becomes free nickel ions after complex breaking, then the free nickel ions are reduced into nickel elementary substances through a cathode to be attached to the surface of a cathode plate, and recovery of metal nickel in wastewater is achieved.

The invention discloses a novel method for tracking a non-point pollution source, namely a method for tracking a bacterial non-point pollution source. Aiming at the characteristics of uncertain problems of the non-point pollution, unfixed position of pollution, unpredictability and the like, a database with a known bacteria non-point pollution source is established according to different bacterial host groups or different antibiotic resistances of population difference; the related relationship between a bacterial source and bacteria in water is established by using a mathematical statistical method; and further, the source of the bacterial non-point pollution in water and contribution rates of various types of sources are analyzed. The invention provides a technology for converting non-point pollution monitoring into point pollution monitoring, which is applicable for identifying, tracking, managing and controlling the pollution source in the non-point pollution management. The method disclosed by the invention has the advancements as follows: the non-point pollution which is generated by rainstorm runoff and has strong randomness and uncertainty can be effectively identified and accurately measured; and the problem of difficultly identifying and controlling the non-point pollution currently can be solved.

A method for detecting the operating mode of a hybrid vehicle using roadside cameras, said method including the analysis of thermal images of parts of the vehicle and / or exhaust fumes, in combination with associated images of the number plates obtained using visual camera(s) operating in synchronism with said thermal camera and used for vehicle make inference and driver identification. The inferred make of the car is used for aforementioned analysis of thermal images. In a variant, the method is used to verify an operating mode reported by, or obtained from information reported by, the vehicle itself. The method can be used in a pollution management system for calculating financial charges to vehicle drivers in a low-emission zone of a Smart City for example.

The invention relates to a biological composite enzyme of a pretreatment refining process for cotton fabric dyeing and finishing, and a pretreatment refining process thereof. The biological compositeenzyme is formed by mixing 23.8-27.3 wt% of alpha-amylase, 54.5-71.4 wt% of pectinase and 4.8-18.2 wt% of cellulase. According to the pretreatment refining process, the pH value of a refining solutionis controlled at 7-8, the biological enzyme has good activity at the pH value of 7-8, the refining temperature is controlled at 50-80 DEG C, 2.1-5.5 g / L of the biological composite enzyme is added, 0.5-2.0 g / L of a non-ionic surfactant is added, a cotton fabric is refined for 50-90 min at a bath ratio of 1:(15-35), the refined cotton fabric is rapidly deactivated at a temperature of 100 DEG C after the refining, washing is performed with 95 DEG C hot water, washing is performed with 60 DEG C warm water, washing is performed with cold water, and drying is performed for 2-4 h at a temperature of 80 DEG C. According to the present invention, with the biological composite enzyme and the refining method, the refining quality and the refining efficiency of the biological composite enzyme are effectively improved, the environment pollution is effectively avoided, and the pollution management cost is reduced.

The invention discloses a management system and method for intelligently treating urban environmental pollution. The system comprises an environmental pollution monitoring point positioning module, aplurality of drainage pipeline corresponding marking modules, a drainage pipeline internal wastewater random sampling detection module, an urban different lake pollution index directional analysis module and a lake environment data management module; the environmental pollution monitoring point positioning module is used for positioning and counting the position of a lake to be monitored; the plurality of drainage pipeline corresponding marking modules are used for marking drainage pipelines for discharging wastewater into lakes; the drainage pipeline internal wastewater random sampling detection module is used for randomly sampling the wastewater discharged by the drainage pipeline; the urban different lake pollution index directional analysis module is used for analyzing different lake pollution indexes, and the lake environment data management module is used for acquiring data information monitored by all modules in real time, feeding back monitored water quality conditions in realtime and matching different drainage pipes, so that sewage discharge is convenient to check.

The invention relates to the field of river management, in particular to a superior microbial acclimation method used for river water pollution management. The superior microbial acclimation method comprises the steps of microbial acclimation stoste preparation, enriched medium preparation and microbial acclimation. According to the method provided by the invention, a microbial acclimation stoste is prepared according to actual conditions of the water sample and the bottom mud of a river to be managed, then an enriched medium is prepared, and finally, through repeated and continuous microbial acclimations and cultivations, a microorganism mixed culture is obtained. In the microorganism mixed culture, enriched cultivating goal bacterium has absolute advantage. On one hand, the acclimation process is simple, the operation is easy, and the cost is low, and on the other hand, goal bacterium can quickly survive, adapt to environment and propagate, environmental requirements are low, acclimated goal bacterium is high in content and has an absolute advantage, and the effect of river water pollution management is good.

The invention discloses a waste gas pollution management device. The waste gas pollution management device comprises a device main body and an air purification device arranged in the device main body,wherein the air purification device comprises first cavities which are longitudinally symmetrically formed in the device main body and are provided with leftward openings; an exhausting device is arranged at the left-end opening of each first cavity; a second cavity is formed between the first cavities which are longitudinally symmetrically arranged; a first sliding block is arranged in the second cavity; the first sliding block is moved through a movement device arranged in inner walls at upper and lower sides of the second cavity; a first motor is fixedly arranged in the first sliding block. At present, green development is advocated and the invention aims at designing a device which can be used for adsorbing and purifying smoke dust and other harmful particles in industrial waste gas and intelligently collecting the smoke dust particles and does not need to be manually replaced.

The present invention discloses a watershed pollution management system and a new accounting method. The watershed pollution management system comprises a central server; a watershed water conservation fund management module, for managing water conservation funds, sending a fund remittance request to each regional server at a set time interval, receiving the funds remitted by each regional serverand storing the funds into the watershed water conservation account; a factory information management module, for managing factory attribute information; a watershed monitoring management module, formanaging device information of watershed monitoring devices and monitoring data acquired in real time; a watershed pollution knowledge management module, for storing water quality indicators and / or image data required for watershed pollution determination; and a pollution compensation management module, for determining whether there is pollution based on the monitoring data, determining a to-be-compensated object according to the pollution category and the factory attribute information when there is pollution, calculating the amount of compensation according a set rule, and sending the to-be-compensated object and the amount of compensation to a corresponding regional server or user terminal. According to the method disclosed by the present invention, pollution scenarios can be automatically determined and the responsibility can be divided for different scenarios.

The invention discloses a preparation method and application of a nitrogen-doped carbon-magnesium composite nano-sheet. According to the method disclosed by the invention, magnesium chloride hexahydrate, ammonia water and cyanamide are used as raw materials, an ethanol water solution is used as a solvent and polyvinylpyrrolidone 58000 is used as a bridging agent to prepare the nitrogen-doped carbon-magnesium composite nano-sheet. The material is a nano-sheet with a sandwich structure, which is formed by compounding sheet-shaped MgO and nitrogen-doped activated carbon. The nitrogen-doped carbon-magnesium composite nano-sheet has the advantages of light weight, good adsorption performance, easiness for recycling and high photocatalytic degradation efficiency in the aspect of environment pollution management, especially water treatment; industrial application of an inorganic nano-material in the technical field of the water treatment is broken through.

The invention discloses a mineral product stope environment pollution management method. The method comprises the following specific steps: 1) establishing a data monitoring station; 2) establishing a data collection system; and 3) carrying out pollutant source account-book management to enable the data collection system to be managed, and to realize statistical query of pollution status and pollution treatment status of each mine in a mine lot, data relating to information of the name, position, type and discharge amount of pollution sources in different departments of each mine as well as the name, model, treatment process and operation conditions and the like of each pollution treatment facility. The mineral product stope environment pollution management method adopts manual reporting and automatic acquisition two acquisition modes to carry out data acquisition, thereby facilitating people from the leader level to the management level to have a macro grasp of pollution conditions of the whole group or the mine; and the data collection system simplifies calculating workload of monitoring personnel, and a user can carry out statistical query according to date + monitoring project or export related reports for report or decision.

Method of assisting regeneration of a depollution device (1) associated with an oxidation catalyst (2) and integrated in an exhaust line (3) of a motor vehicle diesel engine (4), in which a common ramp supplies fuel to the cylinders of the engine, by shifting the engine (4), through modification of engine operation control parameters and use of fuel post-injections into the cylinders, among four strategies of regeneration of the depollution device (1), the first called normal engine operation strategy, the second called level 1 strategy, the third called level 2 strategy and the fourth called over-calibrated level 2 strategy, enabling different thermal levels to be achieved in the exhaust line, with looping back of the strategies, until detection of a request for stopping the regeneration.