99results about How to "Reduce environmental risks" patented technology

The invention relates to the technical field of fault diagnosis, in particular to an intelligent monitoring system for a sewage treatment pipeline, which comprises a topological structure analysis module for collecting pipeline network nodes and communication information, calculating the connection number and geometric attributes of multiple nodes, identifying the pipeline length and the connection direction between adjacent nodes, and analyzing the pipeline network nodes; and calculating the length of a loop formed among multiple nodes and a topological structure, analyzing structural stability features, and obtaining topological geometric feature data. According to the invention, by analyzing the geometric and topological data of the sewage treatment pipeline system, the understanding of the stability of the pipeline structure is optimized, so that the accuracy of fault prediction is improved, the flow and pressure changes are monitored in real time, and the response to dynamic adjustment and abnormal phenomena in the system is more sensitive and timely; the flow gradient and the pressure difference are analyzed, so that the recognition capability of an abnormal mode is enhanced, a problem area can be quickly recognized and processed, the operation efficiency is improved, and the environmental risk and the maintenance cost are reduced.

The invention provides an intelligent dosing method and system, and the method comprises the following steps: building a multi-source water quality data collection and preprocessing unit, and achieving high-quality data acquisition through employing a self-adaptive sampling frequency adjustment and data complementation algorithm; constructing a parameter feature extraction and correlation analysis system, and establishing a parameter coupling network; an intelligent dosing control strategy optimization system is constructed, and accurate control over the dosing process is achieved through deep reinforcement learning and a multi-objective optimization algorithm; a time-frequency domain dual evaluation system and a space-time two-dimensional feature extraction framework are established, and control effect evaluation and system characteristic analysis are achieved. According to the invention, the accuracy and economical efficiency of dosing control are obviously improved, the standard reaching rate of the effluent quality is improved to 99.5% or above, the use efficiency of chemicals is improved by 40-50%, and the operation cost is reduced by 35-45%.

The invention discloses a lithium ore exploration system and method based on data analysis, and relates to the technical field of lithium ore exploration. In the operation process of the system, data from different sources are collected, geological abnormal parameters, lithologic density fluctuation parameters and gravity gradient parameters are obtained, the preprocessed data are analyzed, and a lithium ore exploration result is obtained; the method comprises the following steps: extracting geological features related to mineral resources, carrying out pattern recognition by using a deep learning technology, extracting key features from geological data, obtaining lithologic density Sgeo, rock magnetic parameters Wrock and rock resistivity Rgrad, and generating a three-dimensional geological model of a mining area through an AI algorithm based on the extracted features. The AI algorithm comprises regression analysis and a convolutional neural network (CNN) to process spatial data and generate three-dimensional visualization of a geologic structure, historical mining area distribution data is combined, the system uses a prediction algorithm random forest or a support vector machine (SVM) to predict lithium ore distribution, survey feedback is generated according to a prediction result, and a survey scheme is dynamically adjusted.

The invention relates to the field of sludge treatment, and particularly discloses a method for recycling phosphorus in sludge pyrolysis residues, a flocculant synthesis method and application. The invention discloses a method for recovering phosphorus in sludge pyrolysis residues. The method comprises the following steps: drying the sludge pyrolysis residues, grinding and sieving; the sludge pyrolysis residues are put into a hydrochloric acid solution to react, and solid-liquid separation is carried out after the reaction; treating the phosphorus-containing extracting solution through adsorption resin to obtain a phosphorus purification solution; adjusting the pH value of the phosphorus purification liquid to 9-11, and carrying out a crystallization reaction under the condition that the molar ratio of magnesium to nitrogen to phosphorus is (0.8-1.2): (1-1.6): 1 to obtain struvite; a synthetic method of the flocculating agent is as follows: the flocculating agent is prepared from residual sludge residues. The method for recycling phosphorus in the sludge pyrolysis residues has the advantages that phosphorus resources are recycled from the sludge pyrolysis residues, and the residues are secondarily utilized. The flocculating agent is applied to municipal sewage treatment.

The method comprises the following steps: A, mixing the lime precipitate with hot water, uniformly stirring and dispersing, adding a strong alkali solution, controlling the pH value to be 10-12, and reacting for 1-4 hours while stirring to obtain a mixed solution A; b, cooling the mixed solution A, and filtering to obtain filtrate and filter residues; taking the filtrate to obtain a gallium-containing pregnant solution; and C, the gallium-containing pregnant solution is sent back to a macroporous resin adsorption procedure for recycling gallium from the mother solution, and gallium recycling is carried out. According to the method, gallium in the gallium-containing lime sediment can be effectively recycled, the problem that the gallium content in the gallium-containing lime sediment is high is solved, and the gallium recycling rate is increased.

The invention provides a comprehensive treatment method for gold-copper-containing smelting wastewater, and belongs to the technical field of wastewater treatment. The method comprises the following steps: adding reduced iron powder into the gold-containing copper smelting wastewater, and fully reacting to obtain an iron powder replacement turbid solution; a first pH value regulator is added into the iron powder replacement turbid solution, an oxidizing agent is added after the pH value is regulated, and an iron-removed turbid solution is obtained after full reaction; adding a flocculating agent into the iron-removed turbid liquid, fully flocculating, and carrying out solid-liquid separation to obtain iron-removed underflow and iron-removed overflow; carrying out filter pressing dehydration treatment on the iron-removed underflow to obtain gold-copper slag and filter pressing liquid; and mixing the iron-removed overflow and the press filtrate, adding a second pH value regulator, and fully reacting after regulating the pH value to obtain a neutralized turbid solution. By means of the mode, valuable substances are effectively recycled, meanwhile, harmful metal ions in the wastewater are prevented from affecting a production system or the ecological environment, hazardous waste is not generated in the whole process, and unification of environmental benefits and economic benefits is achieved.

The invention discloses a forestry resource acquisition method based on a GIS technology, relates to the technical field of data processing, and aims to solve the technical problem that an existing catalyst is generally poor in performance in a medium and low temperature flue gas environment. The method comprises the following steps: collecting a remote sensing image of a target forest region through remote sensing equipment; selecting a first target transmission strategy based on the remote sensing image, and transmitting the remote sensing image based on the first target transmission strategy; the method comprises the following steps: acquiring and obtaining sensor data through an Internet of Things sensor arranged in a target forest region; selecting a second target transmission strategy based on the sensor data, and transmitting the sensor data based on the second target transmission strategy; performing dimension reduction processing and integration processing on the obtained remote sensing image and the sensor data to obtain target forestry resource data; the target forestry resource data comprises original collection data and prediction result information generated based on the original collection data.

The invention relates to the technical field of equipment maintenance, in particular to a slag crusher slag removal device and method.The slag crusher slag removal device comprises a monitoring component, a control end electrically connected with the monitoring component and a rapping structure electrically connected with the control end, the monitoring component can monitor the temperature of a slag discharging channel of a slag crusher in real time, and therefore the operation condition of equipment is judged; comprise the equipment temperature, the accumulation amount of slag in the equipment and the like, the monitoring structure also monitors the vibration, pressure and slag attachment conditions of the slag crusher and transmits data to the control end, and the control end controls the vibration frequency of the vibration structure in real time by using the data transmitted by the monitoring structure; the deslagging efficiency is improved, the service life of equipment is prolonged, and the operation safety is enhanced.

The invention discloses a smoldering method for treating organic-heavy metal compound contaminated soil, which comprises the following steps: S1, respectively drying and crushing wood biomass and organic-heavy metal contaminated soil, and mixing 95-97 wt% of wood biomass and 96.2-98.2 wt% of organic-heavy metal contaminated soil to obtain a mixed material; s2, 3-5 wt% of dried and crushed wood biomass is poured into a reactor and flatly laid, then the mixed material is poured into the reactor and flatly laid, finally 1.8-3.8 wt% of organic-heavy metal contaminated soil is poured into the reactor, and hot air is introduced into the reactor to start a smoldering reaction; s3, after the reaction is completed and the temperature is cooled to be lower than 80 DEG C, cyclodextrin and polylactic acid are added and mixed, and the materials are poured out of the reactor and returned to the farmland; the smoldering method provided by the invention can effectively reduce the harm of organic pollutants and heavy metals in the soil.

The invention belongs to the technical field of heavy metal pollution treatment, and particularly relates to a cadmium-polluted soil remediation agent and a cadmium-polluted soil remediation method. The cadmium-polluted soil remediation agent disclosed by the invention is prepared from 29.4 to 32.5 parts by mass of catalytic weathered siderite powder and 67.5 to 70.6 parts by mass of limestone powder, the catalytically-weathered siderite powder is prepared through the method comprising the following steps that a mixture composed of ferrous chloride, siderite powder and water is granulated, granules are obtained, the granules are subjected to sealed standing for 6-24 h, and the catalytically-weathered siderite powder is obtained; the mass ratio of the ferrous chloride to the siderite powder is (7.04-7.89): (2.11-2.96), and the mass of the water is 5-10% of the total mass of the ferrous chloride and the siderite powder. The cadmium-contaminated soil remediation agent disclosed by the invention has a good and long-acting remediation effect on cadmium-contaminated soil.

The invention relates to the technical field of waste liquid treatment, in particular to a chemical waste liquid recycling process information digital management method and system. The method comprises the following steps: collecting parameters of the chemical waste liquid recovery equipment by using an automatic sampler, and storing parameter information of the chemical waste liquid recovery equipment; according to the parameter information of the chemical waste liquid recovery equipment, using computer-aided engineering software to construct a chemical waste liquid treatment digital three-dimensional model; acquiring chemical waste liquid characteristic data, inputting the chemical waste liquid characteristic data into the chemical waste liquid treatment digital three-dimensional model, simulating a waste liquid recovery treatment process by utilizing simulation software, and performing waste liquid recovery result quantitative evaluation on the simulation process to obtain a treatment process evaluation result; and judging whether the waste liquid recovery treatment process meets a preset treatment standard or not according to the treatment process evaluation result. Based on the waste liquid treatment technology, efficient management and abnormity monitoring of the chemical waste liquid recovery treatment process are achieved.

This invention provides a synthesis apparatus for phenylhydantoin, a precursor of phenylglycine, belonging to the field of chemical equipment technology. It includes an ammonium bicarbonate solution reaction tank, an intermediate tank, and a phenylhydantoin solution synthesis tank. The ammonium bicarbonate solution reaction tank is equipped with an ammonia inlet pipe and a carbon dioxide gas inlet pipe. The intermediate tank is connected to the ammonium bicarbonate solution outlet at the bottom of the reaction tank via a pipeline. The top of the phenylhydantoin solution synthesis tank is equipped with a sodium cyanide solution inlet pipe, a benzaldehyde solution inlet pipe, and an ammonium bicarbonate solution inlet pipe. The phenylhydantoin solution synthesis tank includes a jacketed synthesis tank body and is equipped with a heating pipe and a discharge pipe connected to the internal cavity of the jacket to provide a suitable temperature for the synthesis of phenylhydantoin. This application can reduce the frequent dumping operations of the batch reactor, realize the continuous reaction of the phenylhydantoin solution, and at the same time, use ammonia to absorb carbon dioxide instead of solid ammonium bicarbonate, reducing the safety hazards and environmental risks caused by leakage and improving production efficiency.

The application provides a photoresist waste liquid recycling device and process, by adding hydrochloric acid to the photoresist waste liquid in the acidification precipitation tank in the pretreatment module to adjust the pH value, the linear phenolic resin precipitation rate reaches more than 95%, and the linear phenolic resin can be used again to the production stage of the photoresist after centrifugal separation, a compound coagulant containing sulfide and polyaluminum chloride is added to the heavy metal capture tank in the pretreatment module, and the removal rate of heavy metal ions reaches 99.5%; then the photoresist fragments are separated by using an ultrafiltration device, and the diatomite modified by NaOH and polyetherimide is used for adsorption and decolorization, then two-stage vacuum distillation process is used to realize the recovery of high-purity solvents in the photoresist waste liquid, finally, the remaining residue is polymerized and cured by ultraviolet radiation, and the solid fuel with high heat value can also be prepared, so that the 'zero emission' and resource full recovery of the photoresist waste liquid are realized, and the treatment cost and environmental risk are significantly reduced.

The application discloses a method for preparing a carbon fixation material from magnesium slag, and the carbon fixation material, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: mixing magnesium slag and calcareous raw materials to obtain a compound material, wherein the molar ratio of calcium to silicon in the compound material is (2.3-2.7):1; forming the compound material into a green body; preheating the green body at 200-600 DEG C, calcining the green body by increasing the temperature to 1150-1450 DEG C, and cooling the green body by decreasing the temperature to 400-600 DEG C, thereby obtaining the carbon fixation material. The method can reduce the content of beta-C2S in the magnesium slag, increase the content of gamma-C2S, effectively stabilize heavy metal ions, and reduce the generation of volatile gases such as ammonia, thereby significantly improving the long-term stability and environmental safety of the material on the basis of ensuring the carbonation reaction activity.

The utility model belongs to the technical field of sewage discharge, and discloses a plant road rainwater discharge monitoring device which comprises a plurality of sewer wells distributed on the road surface of a plant road, a rainwater pipeline arranged underground, a drainage pipe communicated with a river, a water storage pond, a controller and a PH online detector. The rainwater pipeline is communicated with the water storage pond, a water outlet is formed in the lower portion of one side of the water storage pond and connected with a water drainage pipe, an electric valve used for controlling the water drainage amount is arranged at the position of the water outlet, a detection probe of the PH online detector is arranged at the bottom of the inner side of the water storage pond, and the PH online detector and the electric valve are both electrically connected with the controller. Rainwater in the water storage pond is monitored in real time through the PH online detector, the PH online detector and the electric valve are matched to control opening and closing of the electric valve, the safety of rainwater drainage can be effectively guaranteed through linkage of the PH online detector and the electric valve, the ecological environment of a river is prevented from being affected, and the environmental protection risk is reduced.

This invention discloses a resource recovery system for dredged sediment treatment based on ultrasonic extraction and flotation synergy, comprising: a pretreatment unit, a first-stage ultrasonic extraction reaction unit, a second-stage solid-phase adsorption reaction unit, a third-stage flotation separation unit, a dewatering unit, a residual water treatment unit, and a nitrogen and phosphorus recovery unit. It also discloses a resource recovery method for dredged sediment treatment based on ultrasonic extraction and flotation synergy. This invention solves the problems of low pollutant removal rate, high risk of secondary pollution of dredged soil, and limited resource recovery in traditional dredged sediment treatment. Through the synergistic effect of multiple units including "ultrasonic-liquid-solid-phase adsorption-micro-nano bubble flotation," it achieves efficient release of nitrogen and phosphorus, simultaneous removal of microplastics, rapid separation of clean sediment from polluted phases, and recovery of nitrogen and phosphorus for fertilizer production and resource recovery of clean sediment. The entire process is green and low-consumption, suitable for compact layout on water or near shore, and can simultaneously meet the requirements of sediment reduction, harmlessness, and resource recovery.

The invention discloses a waste gas treatment method for environmental engineering, which relates to the technical field of waste gas treatment and comprises the following steps: waste gas collection, waste gas detection, and evaluating the pollutant concentration through a waste gas detection algorithm to obtain a pollutant index, judging whether waste gas pretreatment is needed according to the pollutant index, waste gas pretreatment, pretreatment evaluation, using a pretreatment evaluation algorithm to quantitatively evaluate the waste gas pretreatment effect to obtain a pretreatment score, waste gas main treatment, main treatment evaluation, using a main treatment evaluation algorithm to quantitatively evaluate the waste gas main treatment effect to obtain a main treatment score, and having the ability to judge whether pretreatment is needed according to the pollutant index, and adjusting the treatment process according to the waste gas situation to improve efficiency, and realizing quantitative evaluation of the waste gas treatment effect by setting the scoring thresholds of the pretreatment and the main treatment, so as to help managers quickly understand the waste gas treatment status, reduce emission deviations, and reduce environmental risks.

The utility model discloses a kind of toilet excrement field returning equipment, it is related to environmental protection and agricultural resource utilization technical field, including storage sewage bin, stirring device, conveying pipeline and distributor, the top end lateral wall of storage sewage bin is equipped with feed inlet, the feed inlet is closed by sealing cover, the inside of storage sewage bin is provided with stirring device, the stirring device includes driving motor, transmission shaft and stirring vane, the driving motor is fixed at the top outside of storage sewage bin, the output shaft of driving motor is connected by shaft coupling with one end of transmission shaft, the other end is penetrated the top of storage sewage bin and extends to storage sewage bin inside, the outer wall of transmission shaft is welded with multiple groups of stirring vane, each group of stirring vane is distributed in spiral shape, the bottom of storage sewage bin is provided with discharge port.The utility model discloses a kind of toilet excrement field returning equipment, by storage sewage bin, the centralized collection of excrement is realized, replace traditional dispersed manual collection mode, reduce labor intensity and improve efficiency.

The present application relates to a kind of steel enterprises gas-solid pollutant discharge integrated management system and method, belong to steel enterprises environmental management technical field.The system includes four modules of environmental protection digital map module, wisdom dispatching and path optimization module, risk early warning module and account management module.The method first establishes the information database of whole plant waste gas treatment, carries out unified coding naming and identity electronic tag transformation to the waste gas treatment facilities and its associated solid waste of each production unit, secondly, sorts out the solid waste utilization way, carries out information transformation to solid waste transport vehicle, metering system, then again access inspection system data, transfer warehouse inventory information and solid waste treatment unit's inventory information.The present application can realize the efficient management and control of whole process of atmospheric treatment and solid waste circulation by the treatment, management and control integration of gas-solid pollutant, improve the accuracy, timeliness and standardization of management.

The application discloses fluorosilicate glass, a preparation method and application thereof, and directly uses fluorine-containing sludge and lithium tailings as raw materials, and the mass ratio of the fluorine-containing sludge and the lithium tailings is 3:7-7:3; the mixed materials are high-temperature melted at 1500-1550 DEG C for 1-1.5 h, and after casting forming, annealing is carried out at 600-650 DEG C, so that the base microcrystalline glass is obtained; then, heat treatment is carried out at 10K / min to 950-1050 DEG C for 1-2 h, so that complex crystal phases of albite and calcium fluoride are precipitated. The application realizes glass solidification of the fluorine-containing sludge, and fluorine ions are solidified in CaF2 and a glass network; the obtained microcrystalline glass has a Vickers hardness of 6.3-6.7 GPa, meets the requirements of building and decoration materials, and can be widely used in floor tiles, wall decoration plates and the like. The method simultaneously disposes of two kinds of solid wastes, realizes'material preparation from waste', and has the advantages of environmental friendliness and economic benefits.

A gas supply device for the feed heater and thermal oil furnace of a naphtha hydrogenation unit is characterized by: a valve assembly installed on the inlet pipeline of the fuel gas separator; the inlet pipeline of the valve assembly is divided into two lines, one for natural gas and the other for the main fuel gas pipeline; the outlet pipeline of the fuel gas separator is also divided into two lines, one connected to the feed heater and the other connected to the thermal oil furnace. This invention, by adding a natural gas pipeline, switches the gas supply to the feed heater and thermal oil furnace to natural gas when flue gas indicators are abnormal, avoiding abnormal flue gas from the heater due to changes in fuel gas composition. This ensures stable operation of the unit and compliant flue gas emissions, meeting environmental protection requirements and reducing environmental risks for enterprises. It largely maintains the original structure of existing equipment, requiring no major modifications, and features low modification costs and high economic benefits.

The utility model relates to a system of ball mill degrading dioxin in fly ash, it includes: stirring mixing mechanism, including first feeding port etc., first feeding port, dosing port all with the top end intercommunication of mixed box, filter pressing mechanism adopts the filter pressing mechanism of belt, and the filter pressing mechanism of belt includes second feeding port etc., and second feeding port is located one side of pre -dewatering section and receives the slurry that first discharge port discharged, drying mechanism, including combustion chamber etc., and combustion chamber is located one side of heat storage room, and the hot air outlet of combustion chamber is communicated with one end of drying cylinder, and the combustion port is located one side of the bottom end of combustion chamber, and third feeding port is located one end of drying cylinder and receives the fly ash cake that second discharge port exports, ball mill mechanism, and ball mill mechanism adopts the ball miller. The utility model improves dioxin degradation efficiency, reduces environmental risk simultaneously, does not produce secondary pollutant, realizes the efficient, low -consumption, safe degradation of fly ash dioxin finally.

The invention relates to the technical field of nickel-containing dangerous and solid waste recycling, and discloses a complex nickel-containing waste smelting flue gas cleaning and comprehensive utilization method which comprises the steps that smelting flue gas is fed into a dry-method deacidification tower after being subjected to waste heat recovery and shock cooling, coarse-particle calcium hydroxide is sprayed into the dry-method deacidification tower, defluorination is preferentially carried out in a first temperature interval of the dry-method deacidification tower, and defluorination is carried out in a second temperature interval of the dry-method deacidification tower; a defluorination product is collected, and fluorine-containing dust is separated and collected through electrostatic dust collection; the dedusted flue gas enters a semi-dry deacidification tower, and fine-particle calcium hydroxide is sprayed into the semi-dry deacidification tower for deep dechlorination in a lower second temperature interval of the semi-dry deacidification tower; and discharging the purified gas after denitration, washing and ionic liquid desulfurization. The defluorination product is washed and purified to prepare hydrofluoric acid, and the dechlorination slag is dissolved and subjected to a double decomposition reaction to prepare hydrochloric acid. According to the method, a temperature gradient and absorbent particle size gradient coupling process is utilized, so that directional separation and enrichment of gas-phase fluorine and chlorine pollutants are effectively realized, the problem that carnallite is difficult to utilize is solved, and full-process recycling and ultralow emission are realized.

The application discloses a method for recovering tin, gold and silver from high-gold-silver-tin-containing materials, and belongs to the technical field of non-ferrous metal smelting methods.The method adopts a hydrochloric acid-hydrogen peroxide system for leaching, so that tin, gold and silver enter a solution and are separated from insoluble residues; sulfur dioxide is introduced into the acid leaching solution to selectively reduce and precipitate sponge gold; after the gold is precipitated, silver chloride is precipitated by diluting the solution, and high-purity silver powder is obtained by dissolving the silver chloride in ammonia water and reducing the silver chloride by hydrazine hydrate, and the silver powder is cast into an ingot; the tin-containing solution can be recycled or neutralized to precipitate and recover tin.The method has a short process, realizes efficient separation of gold, silver and tin by selectively reducing gold by SO2 and precipitating silver by dilution, has high metal recovery rate (tin > 98.5%, gold > 99.5%, and silver > 99.5%), most of the solution is recycled, is environmentally friendly, has remarkable economic benefits, and the like.

This invention discloses a method for the comprehensive utilization of sulfide tailings, relating to the field of sulfide tailings treatment technology. This method uses lead-zinc tailings as raw material and innovatively employs a combined "two-stage acid leaching-gravity separation-flotation" process. First, two stages of acid leaching selectively leach calcite associated with barite in the tailings, reducing the influence of muddy calcite while activating pyrite. Subsequently, the acid leaching residue undergoes gravity separation to further separate undissolved calcite, quartz, and other silica-containing gangue minerals. The gravity concentrate is then subjected to flotation to achieve the separation of barite and pyrite, ultimately obtaining high-purity barite and pyrite products respectively. This invention features a reasonable process route and simple operation, effectively solving the separation problem of fine-grained, high-viscosity lead-zinc tailings, achieving full-component purification and utilization of lead-zinc tailings, significantly enhancing the economic value of tailings resources, and reducing the environmental pressure caused by tailings stockpiling, thus demonstrating good economic, environmental, and social benefits.

The application discloses a kind of low-carbon cementing material by waste incineration fly ash excited ore powder and preparation method thereof, by weight percentage, including the following components: modified waste incineration fly ash 8~12%, ion complex component 1~3%, composite shrinkage component 2~6%, ore powder 55~65%, water 23~28%.Preparation method includes the following steps: S1, preparation modified waste incineration fly ash, ion complex component, composite shrinkage component;S2, modified waste incineration fly ash, ion complex component, composite shrinkage component, ore powder, mixing water, fully mixed and stirred evenly, can obtain the low-carbon cementing material by waste incineration fly ash excited ore powder described in the application.In the aspect of component design, the application is environmentally friendly, low cost, in the performance aspect, the flow rate can be adjusted, the mechanical properties are excellent, the volume shrinkage is small.

The modular combined machining center comprises a machining center body, a dust suction mechanism is arranged on one side of the machining center body and comprises a dust collection box fixedly arranged on the machining center body, a first filter screen is arranged in the dust collection box, and an exhaust fan is installed at the bottom of the outer side face of the dust collection box; a corrugated pipe is connected to the dust collection box, a dust collection cover is arranged on the side, away from the dust collection box, of the corrugated pipe, a vibration motor is fixedly installed on the dust collection cover, and a sweeping mechanism is arranged in the dust collection cover. According to the modularized combined machining center, in order to solve the problem that an inlet of a suction pipeline is prone to being blocked due to the adsorbability of graphite dust, the vibration motor arranged on the dust collection cover can regularly vibrate, so that the graphite dust adsorbed to the inlet of the dust collection cover is loosened and falls off, and blocking caused by accumulation and adsorption of a large amount of dust is avoided; and it is effectively guaranteed that dust extraction work is continuously and stably carried out.

The invention relates to the technical field of mining, and discloses a GIS-based vein mining path planning method and system under complex geological conditions, and the method comprises the steps: determining a mining region according to a three-dimensional space distribution diagram; preliminarily determining a vein mining point according to the mining reliability index; judging whether the vein mining point needs to be adjusted according to the environmental influence index, calculating a comprehensive index according to the mining reliability index and the environmental influence index, and determining the vein mining point again according to the comprehensive index; and comparing the re-determined comprehensive index of the vein mining point with the comprehensive index of the historical vein mining point, determining an initial value of the drilling speed, judging whether the initial value of the drilling speed is corrected or not according to the environmental influence index, and correcting the initial value of the drilling speed according to the environmental influence index to obtain a final value of the drilling speed. According to the method, the scientificity, sustainability and high efficiency of vein mining operation are ensured, and the mining efficiency of mineral resources and the ecological environment protection level are remarkably improved.

The invention discloses chained water film equipment for manufacturing a solar cell and a method for reducing HF consumption, and relates to the technical field of solar cell manufacturing, and the chained water film equipment comprises a spraying chamber, a conveying roller assembly, a spraying assembly, a water tank, a temperature control part and an acquisition assembly. Comprising the following steps: spraying water film liquid in a preset temperature range on the surface of a silicon wafer by using the chain type water film equipment for manufacturing the solar cell, so that the water film liquid covers the surface of the silicon wafer to form a water film, then transporting the silicon wafer with the water film formed on the surface to an etching chamber, and etching the other surface of the silicon wafer; the preset temperature range is 40-50 DEG C; the chain type water film equipment sprays 40-50 DEG C water film liquid to the surface of a silicon wafer, so that a water film is formed on the surface of the silicon wafer, the surface tension of the silicon wafer and the reaction activity of etching tank liquid medicine can be improved, the HF use cost is greatly reduced, and the fluorine ion-containing wastewater treatment cost and the environmental protection risk caused by fluorine-containing wastewater treatment are reduced.

The invention discloses application of layered double-layer hydroxide in synchronous prevention and control of acid production of mining waste rocks and release of heavy metals, and the preparation of the layered double-layer hydroxide comprises the following steps: S1, adjusting the pH value of acidic mine wastewater to 4.0-5.0 by using alkali liquor, and carrying out induced reaction for 15-35 minutes to obtain first pretreated wastewater; s2, alkali liquor is continuously added into the reaction system to adjust the pH value to 8.4-9.0, a co-precipitation reaction is carried out for 50-80 min, and second pretreated wastewater is obtained; and S3, carrying out solid-liquid separation on the second pretreated wastewater, washing with deionized water until the supernate is neutral, drying, grinding and sieving to obtain the layered double-layer hydroxide. The layered double-layer hydroxide is used as a blocking agent for treating mining waste rocks, so that the mining waste rocks can be effectively prevented from synchronously producing acid and releasing heavy metals, the technical problem that the mining waste rocks release pollutants to the environment is solved, meanwhile, the treatment cost of mine wastewater is reduced, and AMD is treated from the source.