3480 results about "Resource recovery" patented technology

The invention relates to the technical field of computing power resources, and discloses a flexible allocation monitoring system for computing power resources, which defines a clear resource use boundary for different types of tasks through a container-level QoS strategy of a resource isolation unit, and adjusts resource allocation in real time in combination with a dynamic partition management module, thereby avoiding resource waste in a traditional fixed allocation mode, and improving the resource allocation efficiency. The dynamic preemption unit accurately screens low-priority tasks for resource recovery through a multi-factor decision engine and a preemption cost evaluation algorithm, in 50 concurrent task scenes, the resource preemption response time is shortened to 20-35 ms and is improved by 50%-70% compared with 70-100 ms of Docker / K8s, the blocking duration of high-priority tasks is reduced to 15-25 ms from 80-120 ms, and the core service interruption risk is greatly reduced.

A mining, releasing and filling process flow collaboration method for a nearly-upright super-thick coal seam belongs to the technical field of coal mining and comprises the following steps: dividing the nearly-upright super-thick coal seam into a plurality of sections, respectively establishing a low-level mining and releasing system at the bottom of each section, and respectively establishing a high-level filling system at the horizontal position of the top interface of each section; comprising a coal mining period and a filling period, after the low-position mining and caving system is established, coal mining and caving are carried out through a coal mining machine and a support in the coal mining period, in the machine following and support moving process, a novel support synchronously lays a separation net on a goaf, and after a filling step pitch is pushed forwards, the novel support unfolds slurry blocking cloth; then filling slurry is injected into the goaf through a high-position filling process roadway, a filling chamber and a filling hole in sequence, the stability of nearly upright surrounding rock is maintained, and it is ensured that the mining depth is safely extended; the method effectively solves the problems of difficulty in prevention and control of surrounding rock instability, difficulty in control of cutting type subsidence and low recovery rate of coal resources in the existing horizontal section fully mechanized caving mining method of the steeply inclined nearly-upright extra-thick coal seam.

The invention belongs to the technical field of resource recovery, and discloses a recovery method of a battery powder short extraction process of a waste power battery, which comprises the following steps: (1) leaching; (2) impurity removal: removing copper, iron and aluminum from the leaching solution to obtain an impurity-removed solution; (3) manganese extraction: extracting manganese from the impurity-removed liquid by using a Cyanex272 extraction agent to obtain an extract liquid 1 and a raffinate 1; (4) nickel-cobalt co-extraction: carrying out nickel-cobalt co-extraction on the raffinate 1 by using a BC196 extracting agent to obtain an extracting solution 2 and a raffinate 2; (5) removing calcium and magnesium: removing calcium and magnesium from the raffinate 2 through resin to obtain a lithium-containing solution; and (6) lithium extraction: extracting and enriching the lithium-containing solution to obtain extract liquor 3 and raffinate 3. According to the method, in the extraction and recovery process of nickel, cobalt and manganese, the number of traditionally needed five or more extraction lines is reduced to two, in the lithium recovery process, lithium extraction is adopted, lithium in raffinate can be reduced to be within 10 ppm, and the concentration of lithium in strip liquor reaches 20 g / L or above.

An ML-assisted framework is disclosed that can guide the design of fit-for-purpose separation membranes for resource recovery and clean water production from wastewaters. Approaches and methodologies for executing the work include the integrated components: 1) ML-assisted new polymer screening; 2) development of an interpretable ML model for membrane properties prediction; 3) mechanistic constitutive model; 4) development of a statistical ML model with a combination of proper regularization for membrane performance prediction; 5) separation membrane fabrication and evaluation.

The invention provides a sewage treatment whole-process control method and device, and relates to the technical field of sewage treatment, and the method comprises the steps: collecting multi-dimensional parameter data in a sewage treatment process through a real-time sensor; preprocessing the multi-dimensional parameter data to generate multi-scale feature data; adjusting the original language model based on the sewage treatment historical corpus data and general data in the fields of environmental science and chemistry to obtain a sewage treatment control parameter prediction model; inputting the multi-scale characteristic data into the sewage treatment control parameter prediction model to generate a sewage treatment control parameter prediction result; and controlling the sewage treatment equipment based on the sewage treatment control parameter prediction result. According to the invention, complex scene data characteristics can be fully combined and sewage treatment control parameters can be optimized in real time, so that the sewage treatment operation efficiency, the resource recovery capability and the carbon emission control effect are improved.

The invention belongs to the technical field of waste resource recycling, and particularly relates to a waste resource recycling plastic product manufacturing and forming device which comprises a base, an injection mechanism used for plastic plasticizing and moving is arranged at the top of the base, and a first feeding hopper is arranged at the top of the injection mechanism; a mold closing mechanism connected with a discharging port of the injection mechanism is arranged at the top of the base and used for conducting pressing molding on molten plastic, a treatment box is arranged at the position, located on one side of the injection mechanism, of the top of the base, and a smashing mechanism used for smashing waste resources is arranged in the treatment box; the two driving crushing cutters are driven by the first motor to synchronously and relatively rotate, and then are matched with the fixed crushing cutter to crush waste plastics; according to the waste plastic crushing and cleaning device, multiple functions of crushing, screening, cleaning, drying and the like can be ingeniously integrated, the crushing effect and efficiency of waste plastic are improved, and the powder cleaning effect and the powder quality are also improved.

The invention belongs to the field of coal waste gas treatment, and particularly relates to a coal waste gas comprehensive utilization dynamic optimization method and system based on big data, and the dynamic optimization method comprises the following specific steps: S1, collecting and preprocessing multi-source data; s2, big data analysis and model construction: constructing a waste gas generation prediction model, a resource recovery potential evaluation model and a waste gas treatment effect evaluation model; and S3, dynamic optimization decision making and implementation: monitoring key indexes in real time and performing early warning, and through accurate waste gas generation prediction and real-time equipment performance monitoring, waste gas treatment process parameters can be adjusted in time, it is ensured that waste gas treatment equipment is always in an optimal operation state, the waste gas treatment efficiency is effectively improved, the pollutant emission concentration is reduced, and the energy consumption is reduced. The waste gas treatment quality is improved, so that the emission index more stably meets the environmental protection standard.

The invention belongs to the technical field of mineral exploration, and particularly discloses a copper ore prospecting method based on three-dimensional geological modeling. The method comprises the following steps: acquiring geological data of a target area; after extreme values in the geological data are recognized and removed through a box plot, the geological data are mapped to an interval of [0, 1], and the geological data are divided into terrain data, stratum data and mineral resource data; adopting Kalman filtering to enable the data to form fusion data, and generating a thematic map comprising a geological map, a mineralization anomaly map and a topographic slope map; based on the data and the thematic map, constructing a three-dimensional geologic model by a finite element method, and performing mining path planning by adopting a specific path planning algorithm formula; exploring by the mining equipment according to the planned path, acquiring geological data, comparing the geological data with the predicted data, re-planning the path and continuing exploring if the path is blocked, the resource recovery is out of tolerance and new mineralization is abnormal, otherwise continuing exploring according to the planned path. The method has the advantages of being high in exploration efficiency and data precision, low in comprehensive cost and high in adaptability.

The invention provides a multiphase sewage heat exchanger performance prediction and structure optimization method and system based on an improved particle swarm algorithm, and relates to the technical field of waste heat resource recovery. The method comprises the steps that a performance database with working medium parameters and structure parameters as input and heat exchange and resistance performance as output is constructed based on multi-physics field numerical simulation; training a BP neural network by using the database to construct an initial prediction model, and globally optimizing model parameters by introducing a particle swarm algorithm of a dynamic inertia weight and an adaptive variation mechanism to obtain an optimized prediction model; and further calling the optimization model to carry out multi-objective optimization on the structural parameters by taking a Nusselt number and a Nanning friction factor as a dual-objective function, and outputting an optimal structural combination. According to the method, intelligent prediction and swarm intelligent optimization are fused, and the prediction precision and optimization efficiency of the design of the multiphase heat exchanger are improved.

The invention discloses a material supply and resource recovery collaborative scheduling method and system, and belongs to the technical field of logistics scheduling, and the method comprises the steps: obtaining a material supply instruction and a garbage recovery instruction, carrying out the image recognition of a building garbage picture, obtaining the garbage attribute, and generating a demand instruction library; the method comprises the following steps: establishing a feature knowledge base, setting a spatial clustering method, carrying out spatial clustering and time window screening, carrying out geographic coordinate analysis and time sequence sorting on material demand points and recovery points, generating an initial task pool, setting a loading matching method, and generating a material supply and recovery loading schematic diagram according to building material and garbage attributes; a circulation path is planned, a path planning method is set, an ant colony algorithm is used for initial path planning, a monitoring feedback method is set, data are returned in real time, the running state of the vehicle is monitored, and an alarm is given out immediately once abnormity is found; and the sorted and regenerated aggregate data is synchronized to a building material database, a resource feedback method is set, a reverse transportation task is identified, and a material supply and resource recovery closed loop is formed.

The invention relates to the technical field of sewage treatment, and discloses an advanced treatment method and device for ship oily wastewater, and the method comprises the following steps: carrying out preliminary filtration on the ship oily wastewater to remove suspended solids and particulate matters so as to obtain first oily wastewater; the first oily wastewater is subjected to coalescence separation treatment, floating oil, dispersed oil and a small part of emulsified oil in the wastewater are removed, the oil content in the wastewater is reduced to 500 ppm or below, and second oily wastewater is obtained; the second oily wastewater is subjected to cross-flow ultrafiltration deep treatment, emulsified oil and dissolved oil are intercepted, produced water and concentrated water are obtained, and the concentrated water serves as third oily wastewater; the third oil-containing wastewater flows back to the first oil-containing wastewater, and discharged water is obtained after the produced water is detected to be qualified. The invention provides a primary filtration, coalescence separation and ultrafiltration three-stage circulating filtration method, emulsified oil and dissolved oil can be efficiently separated and removed, oil resource recovery is realized, and membrane pollution is reduced.

The invention relates to a method for recycling sludge, in particular to a method for enhancing efficient release and recycling of carbon and phosphorus in sludge in a gradient mode. According to the method for stepwise strengthening efficient release and recycling of carbon and phosphorus in sludge, the release efficiency of phosphorus in different occurrence forms in the sludge is improved in a targeted mode, efficient release of inorganic phosphorus and organic phosphorus is achieved through the synergistic effect of multiple steps, meanwhile, efficient release and recycling of carbon are synergistically improved, and the method has the beneficial effects of improving the utilization rate of carbon and phosphorus in sludge and improving the utilization rate of carbon and phosphorus in sludge. The method is used for improving the overall resource recycling efficiency of carbon and phosphorus in the excess sludge and comprises the following steps: 1, pretreating the sludge; 2, pre-treating the green chelating agent to intensify the release of inorganic phosphorus; 3, recovering inorganic phosphorus; 4, resuspending the sludge; 5, strengthening sludge solubilization and hydrolysis by using a peroxidant; 6, anaerobic recycling; 7, recycling carbon and phosphorus resources; the recovery process is simple and convenient, the loss rate is low, the phosphorus recovery rate can reach 80%-99.5%, the acid production efficiency is improved by 14 times or more, and the method has remarkable advantages.

The invention discloses a waste wind power blade recycling process. The waste wind power blade recycling process comprises the following steps that S1, a waste wind power blade is cut into blocks; wherein manufacturing materials of the waste wind power blade comprise carbon fibers and epoxy resin; s2, the block is put into a swelling solution to be subjected to swelling treatment; wherein the swelling liquid comprises a swelling agent and a solvent, the swelling agent is an inorganic metal chloride, the solvent is composed of acetone and water, in the solvent, the mass percentage of acetone is 10-40%, the mass percentage of water is 60-90%, and in the swelling liquid, the molar concentration of the swelling agent is 0.004-0.1 M; s3, cracking the block subjected to swelling treatment to obtain a cracking product containing the inorganic filler and the carbon fiber material; and S4, recycling the carbon fiber material in the cracking product. The recycling process has the advantages of being efficient, environmentally friendly, low in cost and the like, and is suitable for large-scale resource recycling of the wind power blades.

The invention provides a solid waste recycling full life cycle environmental impact evaluation method, which belongs to the technical field of solid waste recycling, and evaluates environmental impact by constructing a system boundary and time dynamic list including solid waste collection, transportation, pretreatment, recycling and product use stages and applying a time weighted characterization model. A time discount rate is introduced to quantify future environmental influence, a multi-scene influence prediction function is adopted to construct a simulation matrix, and an environmental influence time distribution curve is calculated. A four-dimensional index system of resource recovery efficiency, energy substitution efficiency, pollutant emission reduction and environmental impact mitigation is established, a system dynamics and Envi rPred ictor deep learning model is combined to predict a solid waste long-term environmental behavior, an environmental impact comprehensive evaluation matrix is constructed, characterization factors are dynamically adjusted, an iterative optimization mechanism is formed, and the environmental impact mitigation efficiency is improved. Scientific evaluation on the solid waste recycling full life cycle environment influence is realized.

The invention relates to the technical field of membrane separation and resource recovery, and discloses a bipolar membrane electrodialysis device for synchronously capturing carbon dioxide, extracting lithium and producing lithium carbonate. The device utilizes a selective bipolar membrane electrodialysis system to extract lithium ions from liquid resources such as spodumene leachate, brine, oil and gas field wastewater, seawater and the like, and converts the lithium ions into lithium hydroxide. And meanwhile, introducing flue gas containing carbon dioxide into the generated lithium hydroxide solution by using a gas disperser to generate lithium carbonate. Therefore, mineralization capture of carbon dioxide in the flue gas, extraction of lithium ions in liquid resources such as spodumene leachate, brine, oil and gas field wastewater and seawater and production of lithium carbonate are synchronously realized, waste is treated by waste, and the method has the advantages of simple process, high lithium ion yield, short period, environmental friendliness, no pollution, continuous production and the like, and is suitable for industrial production. The method has important significance on carbon dioxide capture, lithium resource recovery and development of the new energy industry.

The present invention provides a device and method for the resource utilization of urban waste incineration slag, which relates to the technical field of slag waste recycling. The device for the resource utilization of urban waste incineration slag includes an equipment frame and a crusher installed on the equipment frame. It further includes a flow and precipitation component, a water addition component, and a resource recovery component installed on the equipment frame. The crusher transfers the crushed slag to the water addition component. The water addition component is used to add water to the ash slag and make it flow into the flow and precipitation component. After operation and precipitation, it is then discharged onto the resource recovery component. It also includes multiple groups of stirring components for stirring the slurry in the flow and precipitation component. The device and method for the resource utilization of urban waste incineration slag, by setting the flow and precipitation component, can obtain precipitation within the operation time compared with a fixed sedimentation tank, and can be flipped and dumped, and flushed with high-pressure water, making it easier to clean the internal slurry and preventing blockage.

Systems and techniques may include enhancing production of a natural resource from a reservoir in the earth.By pumping and circulating a material through a reservoir, where the material interacts with proppant or formation material in fracture zones, the interaction reduces permeability in an overproductive fracture zone and redirects flow to an underproductive fracture zone. Through this self-correcting feedback mechanism, flow redistributes more uniformly across multiple fracture zones over time, resulting in more even permeability distribution and improved reservoir performance. The systems and techniques enable passive treatment using chemical solutions that create self-correcting permeability changes, leading to more controlled and efficient resource recovery from subsurface reservoirs.

The invention discloses a recovery technology for waste lithium iron phosphate batteries, and aims to prepare high-purity iron phosphate and lithium phosphate and comprehensively recover valuable metals such as iron, aluminum and copper in the high-purity iron phosphate and lithium phosphate. The method mainly comprises the following steps that waste lithium iron phosphate battery powder is subjected to oxidizing roasting to obtain roasted battery powder, the roasted battery powder is mixed with phosphoric acid and hydrogen peroxide in different molar ratios, the liquid-solid ratio is adjusted through deionized water, oxidizing leaching is conducted, and lithium-rich liquid and primary leaching residues are obtained; the secondary leaching residues are subjected to phosphoric acid activation, and high-purity iron phosphate dihydrate is obtained after the pH is adjusted; and performing metal ion precipitation on the lithium-rich liquid by adjusting the pH value, and finally performing high-temperature calcination to obtain high-purity lithium phosphate. The method not only realizes efficient leaching and separation of lithium, but also improves the precipitation efficiency of iron phosphate, solves the problems of low metal resource recovery rate and serious process pollution in the prior art, and is suitable for large-scale treatment of waste lithium iron phosphate batteries.

The invention provides a low-carbon circulating technological process for treating high-total-nitrogen wastewater. A main treatment unit and a resource recycling and circulating unit are included; the main treatment unit is characterized in that high-total-nitrogen wastewater sequentially passes through a pH regulating tank, a sulfur autotrophic denitrification tank, a biochemical system, a secondary sedimentation tank, a deep treatment line and ultrafiltration reverse osmosis, produced reclaimed water enters produced water for delivery, and a part of produced concentrated water enters a resource recovery and circulation unit; the resource recovery and circulation unit is characterized in that after concentrated water is treated by a vertical electrophoresis device, mixed acid, mixed alkali and low-salt water are separated out, the mixed alkali is sent to a sulfur autotrophic denitrification tank to be used for supplementing alkalinity consumption of the sulfur autotrophic denitrification system, and the mixed acid sequentially passes through an anaerobic regulating tank, an anaerobic reactor, an alkali washing tower, a biological desulfurization reactor and a sedimentation tank; the recovered sulfur can be sold as elemental sulfur or reused in the sulfur autotrophic denitrification tank, and supernate flows back to the alkaline tower; a green, low-carbon and recyclable water treatment process flow is realized.

The invention provides a large-size fan blade double-heat-transfer-mode microwave pyrolysis system and method.In the system, ceramic chips inlaid with SiC wave-absorbing agents are arranged on the surface of a conveying belt of a material conveying unit, and a tunnel type microwave pyrolysis reactor utilizes microwaves to conduct microwave pyrolysis on the large-size fan blade under the assistance of the ceramic chips inlaid with the SiC wave-absorbing agents; the pyrolysis unit is used for pyrolyzing fan blade materials conveyed into the material conveying unit by the material conveying unit; the pyrolysis gas treatment unit is used for purification-fractional condensation and collection of organic components; and the glass fiber treatment unit realizes carbon residue separation and low-loss recovery of glass fibers through ultrasonic infiltration. The problems that waste fan blades are difficult to recycle, performance degradation of recycled glass fibers is serious, and recycling benefits are low are solved, the requirement for continuously preparing high-strength glass fiber products and co-producing liquid oil through large-size retired fan blades can be met, and microwaves can be driven through wind power generation; and a gas device is additionally arranged to supply partial energy to the system, so that the resource recovery rate and the energy utilization rate are greatly improved.

The invention discloses a method for crushing and recycling waste diapers, and relates to the technical field of resource recycling. The operation state of gravity separation equipment and the crushing condition of waste diapers are monitored in real time, and fault identification and risk analysis are performed on equipment power consumption fluctuation and material particle size distribution by utilizing feature extraction, so that early warning signals of corresponding levels are generated; the maintenance sequence is determined according to the risk level of the equipment, and the material putting amount and frequency are dynamically adjusted, so that the equipment is always operated in the optimal state; therefore, equipment overload and faults are effectively prevented, the service life of the equipment is prolonged, the maintenance cost is reduced, distribution of maintenance resources can be optimized, production stagnation caused by the equipment faults is reduced, the production efficiency and economic benefits are improved, and the continuity and high efficiency of the waste baby diaper treatment process are ensured.

The invention discloses a nickel-containing etching wastewater treatment process, which belongs to the technical field of environmental protection, and comprises a raw water regulating tank, a pH pre-regulating tank, a heterogeneous catalytic oxidation tower, a neutralization coagulation tank, an inclined tube sedimentation tank and a clean water tank which are connected in sequence. According to the process, under the neutral condition, a catalyst loaded with cobalt manganese oxide is used for activating sodium hydrogen persulfate, high-activity sulfate free radicals are generated, a Ni-EDTA complex structure is fractured in a targeted mode, free nickel ions are released in situ, organic ligands are synchronously mineralized, and the adding amount of sodium hydrogen persulfate is dynamically adjusted through a clean water pool closed-loop control system; and high-purity nickel hydroxide precipitate is generated through alkaline precipitation and coagulation, so that efficient solid-liquid separation is realized. The treatment process disclosed by the invention is compact in flow and stable in operation, effectively solves the problems of difficult complex breaking, low nickel removal efficiency, high sludge toxicity, difficult resource recovery and the like when the EDTA complex nickel wastewater is treated by a traditional method, realizes closed-loop recovery of nickel resources, and has the remarkable advantages of low cost, high efficiency and environmental friendliness.

The invention relates to an agricultural waste intelligent classification and processing system, which comprises a sensor system, a data acquisition and processing module, an intelligent algorithm module, an execution mechanism module and a user interface, the data acquisition and processing module cleans and preprocesses sensor data and extracts data features, the intelligent algorithm module provides a feasible scheme for classification and processing of agricultural wastes in the environment, and the execution mechanism module selects automatic processing programs including waste incineration and organic matter composting according to classification results. The user interface provides an interface for interaction between a user and the system, allows the user to monitor the operation state of the system, inquire the processing result and carry out necessary adjustment, and the system realizes intelligent processing of agricultural wastes, improves classification accuracy and processing efficiency, and provides an innovative solution for environmental protection and resource recovery.

The present application provides a method for recovering aluminum and scandium. The method comprises the following steps: providing iron-aluminum residue generated in a leaching process for lateritic nickel ore; performing alkaline leaching, involving subjecting the iron-aluminum residue to atmospheric or pressure leaching by using an alkaline leaching agent, followed by separation and washing, so as to obtain scandium-containing residue, an aluminum-containing first filtrate and an aluminum-containing first washing liquid; and preparing an aluminum product. In the present application, a nickel-cobalt hydroxide product is produced from lateritic nickel ore by means of a hydrometallurgical process, and the iron-aluminum residue, as a raw material, is subjected to leaching using an alkaline leaching agent, solid-liquid separation, and washing. The leaching residue is washed to obtain scandium-containing residue, which can be used as a high-quality scandium smelting raw material; and the aluminum-containing first filtrate and aluminum-containing first washing liquid are treated by using the procedure of the Bayer process to obtain an aluminum hydroxide or aluminum oxide product. The present application achieves resource recovery and utilization of associated valuable metals, i.e., aluminum and scandium, without affecting the production of a major valuable metal product in a hydrometallurgical process of lateritic nickel ore.

The invention discloses a method for regenerating and recycling glass fibers from waste fan blades, which belongs to the technical field of resource recycling, and comprises the following steps of: pretreating waste materials, cutting the waste fan blades into cut materials with the size convenient for transportation on site by using a hydraulic shearing machine; further crushing the sheared materials transported to a factory into palm-sized blocky materials, performing heat treatment in the furnace, continuously feeding the blocky materials into an anaerobic rotary furnace at the temperature of 500 DEG C to decompose plastics into synthetic gas, and using the gas for power generation, heat supply or heating of the rotary furnace; according to the method, the waste fan blades can be treated through physical step-by-step decomposition and pyrolysis, the pyrolysis efficiency is improved through the stirring blades, uneven local heating and material damage are avoided, gas and heat replacement can be achieved through continuous injection of hot gas and regulation and control of rotation of the inner converter body, secondary pollution is avoided, and the energy utilization efficiency is improved.

The invention discloses an intelligent control system and method for a shield muck treatment site, and relates to the technical field of shield engineering muck treatment. In order to solve the problems of low efficiency and high pollution of the existing muck treatment mode, the invention provides the following technical scheme: the muck treatment system comprises a sensing layer, a transmission layer, a control layer and an application layer, and the sensing layer is mounted around a muck treatment site and is used for monitoring muck components, equipment operation states and environmental parameters in real time; the transmission layer transmits the data collected by the sensing layer to the control layer; the control layer processes data of the sensing layer and automatically adjusts equipment operation parameters according to a preset control logic and an optimization algorithm; and the application layer analyzes and decides the data processed by the control layer. According to the system, intelligent monitoring and control are achieved, equipment faults are early warned in advance, the downtime is shortened, meanwhile, resource recovery and cyclic utilization are achieved, the construction cost and the environmental influence can be reduced, and the shield muck treatment efficiency, the resource recovery rate and the environmental protection performance are remarkably improved.

The invention discloses a deep learning and automatic control chemical reactor and a resource recovery method, and relates to the technical field of hydrometallurgy, and the deep learning and automatic control chemical reactor comprises a chemical reactor, a motor, a heating device, a monitoring device, a data center and a PLC control system. Based on a PLC control system, a Transform-LSTM time sequence prediction model is integrated, so that real-time monitoring of parameters such as mixed liquid temperature, reaction chamber pressure, mixed liquid viscosity, conductivity and the like in a wet leaching reaction process can be realized; and the heating power of the heating device, the rotating speed of the motor, the raw material adding amount of the feeding port, the mixed material discharging time of the discharging port and the air displacement of the air exhaust port can be automatically and accurately controlled. The problems that stirring efficiency is low, parameter regulation and control are lagged, and manual experience is relied on are solved, through a predictive control strategy, the real-time monitoring and dynamic regulation level is remarkably improved, the wet leaching process is optimized, energy consumption is reduced, the high-grade metal leaching efficiency is improved, and the method is suitable for various wet metallurgy processes.

The invention discloses a method for recovering mixed acid waste liquid containing hydrofluoric acid, which comprises the following steps: reacting raw materials with sodium salt or potassium salt, and filtering to obtain filtrate; the raw material is mixed acid waste liquid containing hydrofluoric acid; feeding the filtrate into a diffusion dialysis device for treatment, wherein the diffusion dialysis device comprises a homogeneous anion exchange membrane; the recovery liquid obtained through treatment of the diffusion dialysis device is fed into a membrane separation device, the membrane material of the membrane separation device is an acid-resistant metal ion removal membrane, and the recovered mixed acid is obtained on the permeation side of the membrane separation device. According to the method, impurities and metal ions in the low-concentration waste acid solution can be effectively removed, the product reaches the electronic-grade recycling standard, the resource recycling rate is increased, the technological process is simple, energy consumption is low, and the method is suitable for industrial application and popularization.

The invention provides a method and system for salt separation, evaporation and crystallization of printing and dyeing wastewater, and the method comprises the following steps: sequentially carrying out multi-stage synergistic pretreatment on textile printing and dyeing wastewater to remove suspended solids, degrade organic matters and reduce hardness; the pretreated wastewater is subjected to membrane salt separation treatment, and preliminary separation of salt is achieved through reverse osmosis pre-concentration and nanofiltration salt separation; and respectively carrying out evaporative crystallization treatment on the separated high-concentration salt solution to obtain high-purity sodium sulfate and sodium chloride products. According to the method, the salt recovery rate and the product purity are remarkably improved, the energy consumption and the operation cost are reduced, meanwhile, the problems that in traditional printing and dyeing wastewater treatment, salt is difficult to separate, and the crystallization purity is low are solved, and an innovative solution is provided for high-valued resource recovery of industrial wastewater.

The invention belongs to the field of coal gangue resource utilization, and particularly discloses a method for separating and recovering silicon and aluminum elements from coal gangue. The coal gangue is used as a raw material, and efficient resource utilization of the coal gangue is realized through crushing and ball milling, high-temperature roasting activation and acid-base combined treatment. The coal gangue is subjected to high-temperature fluorination roasting by adopting an activating auxiliary agent fluorinating agent to form soluble fluosilicate (H2SiF6) and a fluorine-aluminum compound (AlF3), so that the subsequent silicon-aluminum separation is obviously promoted. The method comprises the following steps: desiliconizing through alkali treatment, leaching and converting silicon in the coal gangue into sodium silicate, and carrying out solid-liquid separation to obtain sodium silicate filtrate and aluminum-rich leaching residues; and then acid treatment is conducted on the aluminum-rich leaching residues, aluminum salt or aluminum hydroxide is prepared, and finally efficient separation of silicon and aluminum is achieved. According to the method, through high-temperature activation roasting, the normal-pressure alkaline leaching desiliconization effect is improved, the acid extraction aluminum efficiency is remarkably improved, the advantages of an acid method and an alkaline method are effectively combined, and the problems that coal gangue resources are difficult to utilize and the resource recovery rate is low are solved.