546 results about "Hazardous waste" patented technology

This invention belongs to the field of wastewater treatment technology, specifically relating to a method for removing metallic impurities from acidic copper-containing etching wastewater at room temperature and pressure. The method includes the following steps: S1, adding an oxidant to the acidic copper-containing etching wastewater to conduct an oxidation-reduction reaction, obtaining a pretreatment solution; S2, adding phosphoric acid or soluble phosphate to the pretreatment solution, adjusting the pH to 1.3-1.7 using a pH adjuster, stirring, and filtering to obtain a purified copper-containing solution. The method provided by this invention achieves high removal rates for Fe, Ni, Zn, Ca, and Mg, while maintaining a high copper ion content. It can recycle and regenerate high-purity copper salt products for application in food, cosmetics, medical, electroplating, and other fields, while also reducing hazardous waste generation, improving economic efficiency, and significantly reducing costs.

The invention relates to the technical field of environmental monitoring of artificial intelligence, and particularly discloses a dangerous waste storage environment real-time monitoring and risk early warning system based on digital twinning, which collects multi-modal environmental data in real time through an intelligent sensor network deployed in a dangerous waste storage facility, and constructs a digital twinning model synchronized with a physical entity; a multi-modal data fusion and physical embedding technology is adopted, and virtual risk parameters of an area which is not actually measured are calculated based on an environment evolution rule; an abnormal association mode between the measured data and the virtual risk parameters is analyzed and identified through the dynamic association network, and risk level judgment and early warning signal triggering are achieved; a sensor monitoring strategy is dynamically adjusted according to an early warning result to form closed-loop management and control; according to the invention, the sensor limitation of the traditional monitoring system is broken through, the advanced accurate early warning of the hidden risk is realized, and the monitoring efficiency is obviously improved through adaptive resource configuration.

The invention relates to a method for recovering lithium and fluorine from aluminum electrolysis hazardous waste, which comprises the following steps: firstly, mixing organic polyol and alkaline hydroxide according to a molar ratio of 1: (0.5-2) to obtain a eutectic solvent; heating the eutectic solvent to 80-150 DEG C, and adding a proper amount of raw material fine powder and calcium oxide for reaction leaching; carbonating and filtering the leachate to obtain lithium carbonate; washing the leaching residues with an acetic acid solution to obtain a calcium fluoride product; the concentration of fluorine ions in the leachate is smaller than or equal to 200 ppm, and the purity of calcium fluoride is larger than or equal to 90%; the leaching rate of lithium in the method is greater than 85%; the slag feeding rate of fluorine is greater than 95%; and no hydrogen fluoride gas is generated in the method. According to the method, a non-toxic and biodegradable eutectic solvent is adopted as a leaching agent, and efficient leaching of lithium and fluorine in the aluminum electrolysis dangerous waste materials is achieved; calcium oxide is used as a precipitating agent, free fluorine is promoted to be precipitated and recycled as calcium fluoride, the whole process meets the requirement of green metallurgy, and the win-win situation of resources and the environment is achieved.

The invention discloses an industrial dangerous waste liquid treatment whole-process intelligent control method and system based on digital twinning, and relates to the technical field of intelligent control, and the method can recognize the sudden change trend of a liquid level and bubbles in real time through a tension field twinning mapping prediction model and the calculation of a bubble form volatilization unsteady state index. Based on a standard data set collected in real time, when the liquid level has an abnormal sudden change trend, early warning can be performed in advance, and a linkage control strategy is automatically triggered. For example, when the liquid level sudden change pre-judgment index R exceeds a safety threshold value, bubble evaporation twinborn prediction is automatically triggered, and control means such as stirring speed reduction and condensation temperature adjustment are executed. According to the intelligent control based on digital twinning and twinning feedback, the reaction environment in the waste liquid treatment process can be accurately controlled, the risk that the reaction is out of control is greatly reduced, lagging reaction and misoperation in a traditional method are avoided, and continuous and stable reaction process is ensured.

The invention relates to the technical field of waste hydrogenation catalyst treatment, and discloses a recovery method of active metal in a waste hydrogenation catalyst, a preparation method of a residual oil hydrogenation catalyst and application of the residual oil hydrogenation catalyst, and the method comprises the following steps: (1) leaching the waste hydrogenation catalyst by using an acid solution to obtain a leachate; (2) the concentration of hydrogen ions in the leachate is adjusted to be 0.05-2 mol / L, then the leachate is in contact with a first extraction agent, washing and reverse extraction are conducted, and a Mo solution is obtained; (3) adjusting the pH value of the first raffinate to 1-2.1, then contacting the first raffinate with a second extraction agent, and then carrying out washing and reverse extraction to obtain an Al solution; and (4) adjusting the pH value of the second raffinate to 2.2-3.5, then contacting the second raffinate with a third extraction agent, and then carrying out washing and reverse extraction to obtain a Ni and / or Co solution. The method can realize hazardous waste resource utilization, and can significantly reduce the production cost of the hydrogenation catalyst.

The invention relates to the technical field of information technology and industrial safety management, and discloses a hazardous waste whole-process risk prevention and control method and system. The method comprises the following steps: acquiring a real-time monitoring data set of each link of the hazardous waste management chain; calculating the fluctuation amplitude of the environment change indexes and analyzing the distribution characteristics of the operation deviation marks; when the two meet a preset condition, judging the initial signal intensity of risk upgrading by utilizing a classification model; screening high-intensity signals and inputting the high-intensity signals into the regression model to obtain a risk transformation trend; matching the risk conversion trend with a historical risk mode to generate a dynamic monitoring adjustment parameter; if the parameter indicates that the monitoring sensitivity is insufficient, fusing additional sensor data to generate an enhanced monitoring data set; and tracking a risk propagation path based on the enhanced data set, and predicting an occurrence position and a time point of a risk peak value. According to the method, the real-time performance, the accuracy and the response speed of hazardous waste management are improved, and the effect of risk prediction and management is remarkably enhanced.

The invention relates to the technical field of hazardous waste early warning management, and particularly discloses a hazardous waste full-life-cycle early warning and management method based on multi-source data, which constructs a hazardous waste full-life-cycle management system by providing the hazardous waste full-life-cycle early warning and management method based on the multi-source data. Digital identities are given to the hazardous wastes, so that accurate information management from a warehousing source is realized; early recognition and intelligent intervention of temporary storage environment risks are realized through a multi-source sensor data fusion and hierarchical response mechanism; the core of the method is that based on real-time data, single or multiple hazard sources can be intelligently analyzed and positioned, reaction paths and linkage risks are dynamically simulated, and a global knowledge base is continuously updated. The system finally forms a closed loop with autonomous learning and optimization capabilities, the management mode of hazardous wastes is improved from passive disposal to active early warning and scientific decision, and the storage security and the management intelligence level are remarkably improved.

Aiming at the problem of low resource utilization value of the existing copper slag, the invention discloses a method for resourceful treatment of the copper slag, through a pyrogenic process and wet process mineral separation coupling method of high-temperature reduction, selective corrosion, magnetic-gravity combined separation and selective leaching, the transformation form and trend of key elements are accurately regulated and controlled, and the utilization rate of the copper slag is improved. The purposes of extracting lead, zinc, iron, copper and silicon elements in the copper slag step by step and converting the elements into corresponding high-value products are achieved. In addition, through process optimization and improvement, a low-temperature reaction system and a reagent cyclic regeneration mechanism are adopted, energy and chemical consumption is effectively reduced, generation of secondary hazardous waste is basically eradicated, and a new solution path is provided for green, high-value and efficient utilization of metallurgical solid waste.

The utility model belongs to the field of transport equipment, concretely relates to a hazardous waste anti -infiltration tray, and the anti -infiltration tray includes the tray body, the tray body has the tray bottom and the tray wall, and the inner side fixedly attached setting of tray wall has the shock attenuation diaphragm, this shock attenuation diaphragm can be deformed and quickly restore original shape when being subjected to external force impact, has the good effect of absorbing vibration, avoids the leakage of anti -infiltration tray due to vibration, is arranged with the reinforcing rib in the tray body along the first direction interval, and the reinforcing rib extends along the second direction until its both ends and tray wall and shock attenuation diaphragm fixed connection, can play the effect of steady support to tray wall and shock attenuation diaphragm, further promotes the stability of anti -infiltration tray, and the stability of tray body can be effectively improved through shock attenuation diaphragm and the reinforcing rib reinforcing support, and then guarantee the safety when transporting hazardous waste.

The utility model relates to the technical field of waste gas purification, in particular to an ammonia gas absorption and purification device for an aluminum ash hazardous waste warehouse, which not only increases the gas-liquid contact area, accelerates the ammonia gas absorption rate of spray liquid by arranging a fan, improves the ammonia gas absorption and purification efficiency, but also can treat and recycle waste liquid, thereby reducing the production cost. The utilization of fresh water is reduced, and water resources are saved; comprising a wastewater treatment mechanism; the device further comprises an absorption mechanism, a turbulent flow mechanism, a spraying mechanism and a backflow mechanism, the absorption mechanism is installed on the wastewater treatment mechanism and disperses ammonia gas, the turbulent flow mechanism is installed on the absorption mechanism and accelerates the reaction of the ammonia gas and spraying liquid, and the spraying mechanism is installed on the absorption mechanism and conveys the spraying liquid into the absorption mechanism. And the backflow mechanism is mounted on the spraying mechanism and conveys the treated water back into the spraying mechanism.

The invention discloses a synthesis method of mannitol carbonate sulfate, and belongs to the technical field of organic synthesis. The synthesis method provided by the invention comprises the following steps: reacting 1, 3, 4, 6-tetrachloro-2, 5-hexanediol with chlorosulfonic acid in the presence of an acid-binding agent to obtain an intermediate solution as shown in a formula (II); formula (II); and mixing the intermediate solution as shown in the formula (II) with anhydrous carbonate, heating to a first set temperature for reaction, and then heating to a second set temperature for reaction in the presence of a phase transfer catalyst to obtain the mannitol carbonic sulfate. The whole process route is short, the yield is high, and the total yield of two steps reaches 88% or above; meanwhile, few by-products are generated, the purification difficulty is low, the reaction time is short, few hazardous wastes are generated, operation is easy and convenient, and industrial large-scale production is facilitated.

The application discloses a process for energy saving and consumption reduction in the cement industry, and relates to the fields of hazardous waste collaborative treatment and flue gas denitration environmental protection technology, and comprises the following steps: step one, selecting liquid hazardous waste with a heat value in a certain range, and fully atomizing the liquid hazardous waste through compressed air and a special spray gun; step two, high-speed spraying the atomized liquid hazardous waste into a denitration furnace at a heat value liquid hazardous waste adding point in a denitration furnace system; step three, according to the temperature working condition and NO X concentration in the denitration furnace system, reducing the coal powder spraying amount of a coal spraying point of the denitration furnace, and adjusting the ammonia water consumption of an SNCR denitration system; step four, real-time monitoring the gas component concentration and temperature and pressure parameters of NO X , CO and other gases in flue gas through multiple detection points, significantly reducing coal consumption by replacing coal powder with the heat value of the liquid hazardous waste, and reducing ammonia water consumption by using hazardous waste combustion to supplement reducing gases such as CO and H2, and enhancing the self-denitration effect of the denitration furnace.

The present application belongs to the technical field of water treatment, and relates to a heat-sensitive color developing agent F-103 production wastewater treatment method. The present application performs multistage treatment on the wastewater. First, an alkaline chemical separation reaction is performed on the wastewater to remove part of the acidic polar organic matter 3-p-tolylsulfonylureido phenol, p-toluenesulfonic acid and the like in the water. Then, an acid chemical separation reaction is performed to further remove the alkaline polar organic matter intermediate MAPOTs and the like in the water. Subsequently, an adsorption reaction is performed using activated carbon to further remove the organic matter and inorganic impurities in the water. Finally, evaporation and concentration are performed to recover the salt sodium chloride. The wastewater treatment of the present application recovers the salt sodium chloride in the wastewater as a resource under the premise of solving the toxicity problem of the organic matter in the wastewater, and realizes the harmless treatment and the reduction of hazardous waste of the wastewater.

The invention relates to the technical field of hydrochloric acid pickling waste liquid recovery treatment, and particularly discloses a production method and device for recycling hydrochloric acid pickling waste water, and the production method comprises the steps of purification and impurity removal, filter pressing to remove tailings, neutralization reaction, iron red filtration, refining electrolysis to separate acid and alkali and the like. According to the production method, full-quantization high-value recovery of the hydrochloric acid pickling wastewater is achieved, remarkable economic, environmental and industrial application values are achieved, regenerated hydrochloric acid and liquid caustic soda can be directly recycled, closed-loop utilization of resources is achieved, meanwhile, a high-temperature roasting process is abandoned, energy consumption of each ton of waste liquid is reduced, purchased chemicals are reduced, and the production method is suitable for large-scale production of enterprises. The manganese ion removal rate is greater than or equal to 99% through graded impurity removal, and the product purity is high; and only a small amount of hazardous waste tailings are generated, secondary pollution is avoided, the triple targets of wastewater treatment, resource recovery and economic benefits are achieved, and technical support is provided for sustainable development of enterprises.

This invention relates to the field of hazardous waste incineration technology and discloses a negative-pressure closed-loop pyrolysis pretreatment system for rotary kiln hazardous waste incineration, comprising: a waste heat flue gas heating unit, a negative-pressure closed-loop pyrolysis pretreatment chamber unit, a pyrolysis waste gas return and destruction unit, and a safety control unit. By using medium-temperature flue gas from the downstream section of the waste heat boiler as the heating medium, energy cascade utilization is achieved and high-grade energy consumption is reduced; high-moisture or high-viscosity hazardous waste is dehydrated and pyrolyzed before entering the kiln, significantly reducing the risk of temperature fluctuations and coking / blockage within the kiln; through a closed negative-pressure collection and centralized destruction path in the secondary combustion chamber, front-end control and centralized destruction of pollutants such as volatile organic compounds are achieved; through inerting replacement, flame arrest and backfire prevention, online monitoring, and SIS hard interlocking, the inherent safety level and abnormal operating condition handling capabilities of the system are improved. A systematic solution that can be coupled with existing incineration lines and balances energy utilization, environmental control, and inherent safety is proposed.

An iron bucket plastic bucket hazardous waste resourceization sewage treatment system based on segmented oxidation and dynamic regulation, strong alkali wastewater enters the first artificial grid, the first oil separation tank, the strong alkali water adjusting tank, the PH adjusting tank, the demulsification tank, the first coagulation sedimentation tank, the sand filter and the reuse water tank in sequence through the water inlet; the comprehensive wastewater enters the physical and chemical pretreatment unit, the hydrolysis acidification tank, the nutrition tank dosing tank, the anaerobic UASB tank, the AO biochemical tank, the secondary sedimentation tank, the Fenton advanced oxidation unit and the biological aerated filter in sequence through the water inlet, the sludge inlets of the first coagulation sedimentation tank, the anaerobic UASB tank, the secondary sedimentation tank and the Fenton advanced oxidation unit are connected with the sludge tank inlet in sequence, the utility model discloses scientific and reasonable design, multi-mode switchable process flow, 18% lower than traditional process, energy consumption reduces 25% at low load; effectively reduce the water treatment cost of 0.8-1.2 yuan per ton, and the social and economic benefits are remarkable.

The utility model relates to the technical field of hazardous waste treatment, in particular to a hazardous waste solid-liquid separation device, which comprises a box body, a material pressing component, a material conveying component, a material conveying component, a material conveying component, a material conveying component and a material conveying component, and the inner cavity of the box body is fixedly connected with a cylinder; the material pressing component is mounted on the upper side of the box body; the material pushing assembly is mounted at the bottom of the cylinder, and the material pushing assembly is used for filtering waste liquid and pushing solid waste to be lifted; and the anti-blocking assembly is installed on the material pushing assembly, and the anti-blocking assembly is used for pushing blocked solid waste. According to the solid-liquid separation device, after solid-liquid separation of hazardous wastes, the extruded solid wastes can be pushed to be lifted to the opening in the top of the cylinder by utilizing the material pushing assembly, so that a worker can conveniently take out the solid wastes, and the operation convenience can be improved.

The invention discloses a combined treatment method and system for potassium clavulanate fermentation waste bacterial liquid and wastewater. According to the method, through the whole-process collaborative design of pretreatment, anaerobic biochemical treatment, biogas desulfurization, sulfur recovery, anaerobic ammonia oxidation, deep biochemical treatment, energy recovery and sludge treatment, the degradation efficiency is improved by adopting ultrasonic wall breaking; the anaerobic ammonia oxidation technology is used for treating low-carbon-nitrogen-ratio and high-ammonia-nitrogen wastewater, the recycled biogas is used for energy supply, elemental sulfur generated by desulfurization replaces an exogenous carbon source, and real-time parameter optimization is achieved in cooperation with a PLC intelligent regulation and control system. The system breaks through a traditional mushroom residue-wastewater step-by-step treatment mode, realizes in-situ harmless treatment and resource utilization of dangerous mushroom residues, solves the problems of high treatment cost, serious secondary pollution, carbon-nitrogen imbalance and the like in the prior art, has the advantages of low energy consumption, low cost, high pollutant removal rate, remarkable resource recovery benefit and the like, and has a wide application prospect. The method is suitable for co-treatment of high-concentration organic wastewater and hazardous waste mushroom dregs in the fermentation pharmaceutical industry.

The invention discloses a hazardous waste disposal facility matching and early warning system and method based on multi-source data fusion in the technical field of hazardous waste disposal, and the system comprises a data collection module which is used for obtaining multi-source heterogeneous data; the data preprocessing module is used for analyzing, cleaning and standardizing the multi-source heterogeneous data to obtain standardized data; the intelligent analysis module is used for analyzing the standardized data to obtain a matching result or an early warning result; the intelligent analysis module comprises an intelligent matching sub-module which is used for calculating a comprehensive score of the hazardous waste disposal unit according to a multi-factor weighting algorithm and generating a matching result according to the comprehensive score. According to the system, data of multiple data sources are integrated through the data acquisition module, standardized data are obtained through the data preprocessing module, and the intelligent analysis module recommends disposal units for waste production enterprises based on a multi-factor weighting algorithm and the standardized data, gives out multi-level early warning and reasonably configures hazardous waste disposal resources.

This invention discloses a method for the comprehensive utilization of waste bleaching clay generated from the adsorption and refining of recycled base oil, belonging to the field of hazardous waste resource utilization technology. The method utilizes rotary pyrolysis, rotary calcination, and sulfuric acid acidification as core steps. First, the waste bleaching clay is fed into a rotary pyrolysis furnace for pyrolysis, and the liquid waste oil is recovered by condensation and separation, yielding black waste bleaching clay with an oil content of <0.5%. Then, the black waste bleaching clay is calcined in a rotary calcination kiln to completely remove carbon components, obtaining a pure bleaching clay matrix. Finally, the matrix is ​​mixed with a sulfuric acid solution for acidification and activation, and post-treatment yields activated bleaching clay. Through the synergistic effect of these three processes, 85-95% of the waste oil can be efficiently recovered and recycled for fuel, and the regenerated activated bleaching clay has a specific surface area of ​​180-220 m². 2 / g, decolorization rate of 90-98%, still maintains high adsorption performance after 3-5 cycles, no wastewater discharge throughout the process, stable equipment operation, and both environmental protection and economic benefits, making it suitable for large-scale industrial promotion.

The invention discloses a chromium-containing wastewater treatment and recovery treatment line and a recovery treatment method thereof. The ion exchange system is used for carrying out ion exchange adsorption on the hexavalent wastewater; the alkali washing system is used for outputting alkali liquor to the ion exchange system; the washing system is used for outputting washing water to the ion exchange system; the pickling system is used for outputting acid liquor to the ion exchange system; the chromium recovery treatment branch line is used for receiving the hexavalent wastewater of the ion exchange system, mixing the hexavalent wastewater with sulfur powder and alkali liquor to prepare chromium hydroxide, then carrying out filter pressing on the chromium hydroxide, outputting a chromium hydroxide filter cake to the recovery calcination treatment line, and outputting a press filtrate to the press filtrate recovery branch line; the press filtrate recovery branch line is used for recovering sodium thiosulfate from the press filtrate; and the recycling and calcining treatment line is used for calcining the chromium hydroxide filter cake into Cr2O3. According to the scheme, the purposes of micro discharge and even zero discharge of the chromium-containing wastewater are achieved, and the problem that a large amount of chromium-containing hazardous waste sludge is generated by depending on a chemical reduction-precipitation method in traditional chromium-containing wastewater treatment is solved.

This invention discloses a gasification reduction ironmaking system and method for the synergistic resource utilization of solid and hazardous waste and red mud. The system includes a raw material pretreatment unit, a pyrolysis gasification and purification unit, a gasification reduction ironmaking unit, and a waste heat comprehensive utilization unit. After pretreatment, the solid and hazardous waste enters a multi-stage gasifier for pyrolysis and gasification reactions. Combined with a two-stage gas-solid separation and return structure, the gas yield and carbon conversion rate are improved. The gasified gas enters the reduction furnace and pre-reduction furnace for cascade reduction, realizing the efficient recovery of iron resources from red mud. The waste heat comprehensive utilization unit performs multi-stage heat exchange on the tail gas and uses it for the preparation of gasifying agents, realizing closed-loop heat utilization. This invention constructs a multi-cycle system of gas, heat, and materials, realizing the recycling of gas, heat, and materials. It not only improves the resource utilization rate but also obtains tail gas rich in methane, achieving the synergistic and efficient resource utilization of solid and hazardous waste and red mud.

The invention provides a method, an intelligent agent and a system for supervising the compliance of a hazardous waste label, and the method comprises the steps: analyzing the comprehensive information of the hazardous waste label from an obtained image of the hazardous waste label through a large model, and enabling the large model to be obtained through the training of the image of the hazardous waste label, analyzing license key information of the obtained pollution discharge license through a large model; acquiring a hazardous waste management plan and a management ledger; the large model examines the compliance of the comprehensive information of the hazardous waste label according to an input preset rule base, and performs cross examination on the consistency according to the obtained hazardous waste management plan and management ledger; and outputting an examination result and a rectification opinion. The technical problems that in the prior art, time and labor are wasted, comprehensive coverage cannot be achieved, timeliness is insufficient, and the requirement for monitoring personnel is high in a manual on-site monitoring mode are solved, the accuracy of compliance monitoring of hazardous waste labels can be guaranteed, and meanwhile the monitoring efficiency and the intelligent level are improved.

This invention discloses a method and system for producing zinc calcined sand from zinc-containing waste based on calorific value classification and flue gas recycling. First, the zinc-containing hazardous waste is classified according to its calorific value. High-calorific-value raw materials are self-heated and roasted in a fluidized bed roaster (1), while low-calorific-value raw materials are supplemented and roasted in a rotary kiln (2), achieving efficient energy utilization. Then, the zinc-containing flue gas dust and sludge collected through flue gas purification are returned to the rotary kiln (2) for cyclic roasting via a closed conveying device (8). Combined with a multi-stage flue gas purification process involving "dry + wet + deep treatment" (gravity settling chamber (4), scrubbing tower (5), desulfurization device (6), and electrostatic precipitator (7)), efficient zinc recovery and ultra-low emissions are achieved. The total zinc recovery rate of this invention reaches 90%-95%, reducing energy consumption by more than 20% compared to traditional processes, and the particulate matter in the exhaust gas is ≤10mg / m³. 3 SO2 ≤ 35 mg / m³ 3 The products meet industry standards, achieving the unified treatment, resource recycling, and environmental compliance of zinc-containing hazardous waste, and possess significant commercial value and social benefits.

The utility model discloses an energy-saving device for hazardous waste incineration flue gas treatment, which comprises a hazardous waste treatment system and an energy circulation system which are matched with each other, and the hazardous waste treatment system comprises a rotary kiln (1), a secondary combustion chamber (2), a waste heat boiler (3) and a dry deacidification and bag-type dust collector (4), the energy circulation system comprises a flue gas heat collector (5), a wet slag drying system (6), a primary air heater (7), a secondary air heater (8) and a boiler feed water heater (9); an outlet of the bag-type dust collector (4) is connected with the flue gas heat collector (5), a waterway outlet (5a) of the flue gas heat collector (5) is respectively connected with the wet slag drying system (6), the primary air heater (7), the secondary air heater (8) and the boiler feed water heater (9) through four branches, and return water is connected with the flue gas heat collector (5) through a circulating pipe (24). The waste heat recycling device has the advantages that waste heat generated by hazardous waste incineration is effectively recycled, and the hazardous waste disposal cost is reduced.

The invention discloses a beveled wire-wound cotton core stripping device, and relates to the technical field of hazardous waste wire-wound cotton core stripping, and the beveled wire-wound cotton core stripping device comprises a machine base, a driving device, a guiding device and a cutting device, the driving device is arranged on the machine base and comprises a first driving assembly and a conveying chain axially arranged in the center of the machine base, and the first driving assembly and the conveying chain are in transmission connection; the conveying chain independently bears and fixes the thread-wound cotton core and independently conveys the thread-wound cotton core from the feeding end to the discharging end; the guide devices are symmetrically arranged on two sides of the conveying chain, so that the wire-wound cotton core is coaxial with the center of the conveying chain; the cutting device is close to the discharging end and comprises cutting blades symmetrically arranged on the two sides of the conveying chain and a second driving assembly installed on the machine base, the cutting blades are in transmission connection with the second driving assembly, the cutting blades are horizontally arranged and collinear with the axis of the cotton core, the distance between the two blades is matched with the diameter of the non-wire-wound cotton core framework, and the wire-wound layer on the cotton core framework can be completely cut off at a time. The device is used for stripping the dangerous waste wire wound cotton core, meanwhile, a wire winding layer can be directly stripped from a cotton core framework, and the efficiency is improved.

1. Name of the product in this design: Elemental Analyzer. 2. Application of this design: It is used for measuring the carbon, hydrogen, and nitrogen content in solid and liquid samples (including urea) in fields such as power, coal, metallurgy, petrochemicals, coal chemicals, environmental protection, cement, papermaking, geological exploration, scientific research institutes, and solid and hazardous waste. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The invention belongs to the technical field of industrial wastewater treatment and resource utilization in automobile manufacturing, and particularly relates to a phosphating wastewater recycling system and method for an automobile coating line. The system comprises a coagulating sedimentation pretreatment unit, a deep filtration and membrane separation unit, a concentrated water limit concentration unit, an evaporative crystallization and total recycling unit and an intelligent control unit. According to the system disclosed by the invention, the final products are only phosphorus-containing dried crystal salt (hazardous waste) and industrial ultrapure water. The volume of the high-salinity concentrated water is reduced by more than 90% through high-pressure reverse osmosis, and only the high-power concentrated solution is subjected to MVR evaporation. Through a two-stage RO + EDI fine treatment process, the conductivity of the recycled water is stably maintained at 2-3 [mu] S / cm, and the water replenishing requirement of a pure water tank before electrophoresis of a cab and a frame coating line is completely met. And meanwhile, the system is provided with perfect chemical cleaning (CIP) logic, so that the service life of the RO membrane and the MVR heating pipe can be remarkably prolonged.

The present invention relates to an intelligent decision-making control method and system for staged sulfidation microscopic chemical reactions of high-arsenic waste acid from copper smelting, the system comprising a staged sulfidation module, a real-time monitoring module, an intelligent decision-making module, and a terminal execution module. In the present invention, the intelligent decision-making module is used to: acquire microscopic chemical information from the real-time monitoring module, analyze the arsenic speciation and phase state in a raw solution to determine whether a chemical reaction can occur, determine a staged combination of sulfidation reactions on the basis of the arsenic concentration in the raw solution, calculate a total arsenic amount and a hydrogen sulfide addition amount on the basis of the valence state, concentration and flow rate of arsenic in a first-stage influent, calculate a total arsenic amount and a hydrogen sulfide addition amount on the basis of the valence state, concentration and flow rate of arsenic in a second-stage influent, and calculate a total arsenic amount and a hydrogen sulfide addition amount on the basis of the valence state, concentration and flow rate of arsenic in a third-stage influent; and finally, the terminal execution module is used to dynamically adjust a liquid diversion direction and a hydrogen sulfide addition rate in each-stage reaction process. Thus, closed-loop feedback and optimal control of a sulfidation process is achieved by means of concentration-based diversion direction control and precise hydrogen sulfide addition, thereby reducing arsenic-containing hazardous waste generation.

The utility model discloses a special lifting tool for a hazardous waste disposal box, which comprises a lifting appliance beam and two hangers, four lifting hook tools are arranged on the lifting appliance beam, the top surface of the lifting appliance beam is rectangular, the four lifting hook tools are respectively arranged corresponding to four corner points of the rectangle, two symmetrically arranged lifting seats are arranged on the top surface of the lifting appliance beam, and the hangers are arranged on the lifting appliance beam. The two hanging racks are connected in parallel, the four lifting hook tools are divided into two groups which are symmetrically arranged, each group of lifting hook tools corresponds to one hanging rack, each lifting hook tool comprises a lifting hook sheet which is rotatably mounted, and the lifting hook sheets can be connected with the hanging racks in a hooking manner. The lifting hook tool has the remote control hooking and unhooking capability, workers do not need to enter a warehouse for unhooking operation, and the operation safety risk can be effectively avoided.