2255 results about "Hazardous waste" patented technology

The invention provides a hazardous waste storage intelligent management system and method, and the system achieves the cooperative work of a multi-level sensor network, an intelligent data processing module, an automatic storage scheduling module, a grading early warning module, a full-life-cycle information tracking system, and a remote monitoring module. And real-time monitoring, risk early warning, automatic scheduling and whole-process tracking of the hazardous waste storage environment are realized. The sensor network collects data in a warehouse in real time, and the intelligent data processing module carries out analysis based on a machine learning algorithm and dynamically adjusts a risk early warning threshold value. The system triggers an early warning signal according to an analysis result, the storage position and the ex-warehouse sequence of the hazardous waste are optimized through an automatic scheduling module, the full-life-cycle information tracking system records operation data of the hazardous waste through RFID and a block chain technology, the non-tampering performance and traceability of the data are ensured, and the safety of the hazardous waste is improved. And the remote monitoring module allows remote operation of the system through the cloud platform. The system improves the safety, intelligence and automation level of hazardous waste warehouse management.

The invention discloses an intelligent traceable hazardous waste management system based on RFID, particularly relates to the technical field of hazardous waste intelligent supervision, and is used for solving the problems of unreliable data acquisition, misreading and misreading and state updating delay caused by signal interference of an existing RFID system in a high-density hazardous waste storage scene. The method comprises the following steps: dynamically dividing warehouse sub-regions, distributing a unique grouping identification code, and combining a directional antenna array partition scanning technology to avoid signal crosstalk; by analyzing the multi-path phase fluctuation rate and the polarization direction offset, a main interference frequency band is dynamically identified by using a covariance decomposition algorithm, and the communication frequency is switched, so that the tag identification rate in a complex electromagnetic environment is improved; scheduling a target sub-region scanning process based on a warehouse-in and warehouse-out instruction, synchronously verifying a label state and an actual position, generating an operation link space-time atlas, actively tracing cross-region time logic contradictions and triggering full-disk scanning; and full-process accurate tracing of the hazardous waste container and complete data management and control in a high-density scene are realized.

The invention discloses an intelligent warehouse management method and system for hazardous wastes, and the method comprises the steps: carrying out the real-time monitoring of the state of an object in a hazardous waste warehouse through a deployment sensor network, obtaining the basic data of the position of the object and the environment parameter, and transmitting the basic data to a central processing platform, thereby obtaining a preliminary data set; performing integration processing on multi-source information by adopting a data fusion technology according to the preliminary data set, eliminating redundancy and noise, and determining a standardized data record; aiming at the standardized data record, dynamically analyzing the distribution of goods locations in the warehouse by utilizing a path optimization algorithm, and if the change of the occupation state of the goods locations is detected, adjusting a goods location allocation scheme in real time, and outputting an optimal storage location combination; according to the optimal storage position combination, a dynamic route planning scheme is generated in combination with warehouse layout information, and the optimal moving track of the operation equipment is obtained; according to the invention, intelligent management of the hazardous waste warehouse is realized, and the storage efficiency and safety are improved.

The invention provides a method for preparing a waste liquid purification material from electrolytic manganese residues and phosphogypsum leachate and the waste liquid purification material, and belongs to the technical field of hazardous waste resource utilization. The method comprises the steps that the electrolytic manganese residues and the iron-containing solid waste are mixed and stirred to be uniform, and iron-manganese residues are obtained; mixing the iron-manganese slag with fly ash and pug, uniformly stirring, granulating and aging to obtain raw material granules; the method comprises the following steps: mixing the landfill leachate and the ardealite leachate, and uniformly stirring to obtain a hydrothermal solution; immersing the raw material particles in a hydrothermal solution, and carrying out a hydrothermal reaction to obtain an initial purified material; and carbonizing the initial purification material to obtain the waste liquid purification material. The preparation process is simple, the required raw materials are all industrial wastes, the waste liquid purification material is prepared from the electrolytic manganese residues and the ardealite leachate through reasonable proportioning, hydrothermal reaction and carbonization, high-concentration organic pollutants in the waste liquid can be efficiently adsorbed and degraded, and heavy metal pollutants in the waste liquid can be synchronously removed.

The invention relates to a high-strength stable solid waste-based composite cementing material and a preparation method and application thereof in the field of building materials. The high-strength stable solid waste-based composite cementing material is prepared from the following raw materials in parts by weight: 70-85 parts of composite solid waste micro powder; 10 to 20 parts of Portland cement clinker; 3-8 parts of a composite activator; 0.5 to 2 parts of a nano-scale function regulator; wherein the composite solid waste micro powder is prepared by mixing and grinding the following raw materials in parts by weight: 40-60 parts of blast furnace slag powder; 20 to 30 parts of fly ash; 10-20 parts of chemically modified electrolytic manganese residue powder; and 5-15 parts of steel slag powder. According to the preparation method, sodium metasilicate is adopted to assist medium-temperature calcination to chemically modify the electrolytic manganese residues, so that not only is the gelation activity of the electrolytic manganese residues effectively excited, but also free-state manganese, cadmium and other heavy metal ions in the electrolytic manganese residues are fixed in situ in newly formed zeolite-like silicate mineral lattices through thermochemical reconstruction; and a brand new technical path is opened up for safe and high-value utilization of the typical hazardous waste, namely the electrolytic manganese residues.

The invention relates to the technical field of solid waste treatment, in particular to a harmless barium slag compound and a preparation method and application thereof. The preparation method comprises the following steps: grinding barium slag and desulfurized gypsum, mixing with water, and standing and curing to obtain a harmless barium slag compound; the mass ratio of the barium slag to the desulfurized gypsum is limited to be (1-10.1): 1; the mass ratio of the water to the mixture of the barium slag and the desulfurized gypsum is (0.18-0.32): 1; soluble sulfate provided by the desulfurized gypsum is used, free barium ions in the barium slag are fixed through precipitation, barium sulfate is formed, and harmless fixation is achieved. The leaching concentration (horizontal oscillation method) of heavy metal ions in the barium slag is lower than the drinking water standard and the hazardous waste identification standard, and harmless treatment of the barium slag is achieved. The problems of reduction, harmlessness and recycling of industrial solid waste (desulfurized gypsum) and hazardous waste (barium slag) can be solved, and collaborative resource utilization and environmental protection of the solid waste and the hazardous waste are promoted.

The invention belongs to the technical field of tungsten smelting, and particularly discloses a method for recycling tungsten from tungsten smelting soda boiling slag through reselection, tungsten in the slag is recycled through a physical mineral separation method, a large number of acid-base reagents are not introduced, acid-base wastewater is not generated, and high-energy-consumption roasting or high-temperature acid-base leaching is not needed. The process is simple, large-scale treatment can be achieved, reagent consumption is low, energy consumption is low, closed-loop circulation of mineral separation water can be achieved, no wastewater is discharged, the process is environmentally friendly and free of pollution risks, meanwhile, indexes of the soda boiling residues subjected to innocent treatment can reach industrial solid waste, hazardous waste is converted into common solid waste, and the economic benefit is high. The environment-friendly treatment cost is low.

The invention discloses an intelligent prediction and scheduling management system based on hazardous waste incineration waste heat recovery power generation, relates to the technical field of hazardous waste incineration waste heat recovery power generation, and aims to monitor key parameters such as temperature, pressure, flow and flue gas components in the hazardous waste incineration process in real time, and determine the hazardous waste incineration waste heat recovery power generation through data processing and feature extraction. And the hazardous waste incineration heat value, the waste heat boiler steam production amount and the power generation amount are accurately predicted. Meanwhile, the system combines power grid load change and price fluctuation, realizes intelligent regulation and control of equipment operation and maximization of waste heat recovery efficiency and generating capacity through an optimization scheduling algorithm, can improve energy recovery efficiency to the maximum extent, reduces energy waste, improves economic benefits and environmental sustainability of the system, and has wide application prospects. The power generation benefit can be improved in the field of hazardous waste incineration, and reference can be provided for other industrial waste heat recovery power generation systems.

The invention discloses an emission reduction system for chloride ions in waste incineration fly ash based on machine learning, relates to the technical field of solid waste resourceful treatment, is used for data-driven fly ash multi-stage dosing collaborative removal, and is divided into fly ash pretreatment and data acquisition, online ion monitoring and dosing decision, multi-stage reaction and dynamic feedback, OTA upgrading and cross-plant migration. And removing the multi-dimensional pollutants synergistically. The dosing ratio and the reaction stage are optimized in real time through a gradient boosting tree-reinforcement learning model, and the concentrations of chloride ions, heavy metals and dioxin precursors are monitored on line. According to the system, monitoring and decision-making paths of all stages are stored in a cloud knowledge graph and can be upgraded through OTA, the chloride ion removal rate is increased by more than three percent, the agent dosage is reduced by 25%, the scheme can adapt to the difference of fly ash components in different factories, economy and environmental protection are both considered, and the system has remarkable popularization value in large-scale waste incineration and hazardous waste disposal.

The invention belongs to the technical field of metallurgical engineering, and discloses a red mud and arsenic-containing hazardous waste collaborative resource utilization method which comprises the following steps: pretreating red mud by adopting roasting and magnetic separation processes, mixing the pretreated red mud with sodium carbonate, a reducing agent and non-ferrous smelting arsenic removal slag, and carrying out reduction smelting to obtain arsenic-iron alloy and sodium carbonate slag; the arsenic-iron alloy can be used as a counterweight material; the furnace slag can be reused as an arsenic removal agent. According to the method, the red mud is pretreated through roasting and magnetic separation, the valuable element iron is enriched from the red mud in a high-selectivity mode and cooperates with the colored arsenic-removed slag to carry out reduction smelting, the harmful element arsenic is converted into a novel material, synergistic resource utilization of the red mud and the arsenic-containing hazardous waste is achieved by using waste to treat waste, and the method has great significance.

The utility model specifically discloses an odor wet oxidation treatment device, which comprises: a gas conveying unit, which is used for collecting and conveying odor gas; the wet-type catalytic ozonation unit is communicated with the gas conveying unit and is used for carrying out primary treatment on the malodorous gas so as to remove part of malodorous substances in the malodorous gas; the chemical oxidation unit is communicated with the wet-type catalytic ozonation unit and is used for further treating the malodorous gas subjected to primary treatment so as to remove residual malodorous substances in the malodorous gas; and the gas discharge unit is communicated with the chemical oxidation unit and is used for collecting the purified malodorous gas and discharging the malodorous gas outwards. According to the device, the wet ozone catalysis unit and the chemical oxidation unit are coupled, so that water-soluble and water-insoluble components in the malodorous substances can be effectively treated, and the device is small in occupied area and does not generate hazardous wastes. Therefore, the device has the characteristics of low cost and small pollution, and can better adapt to subsequent treatment of malodorous gas in industrial enterprises.

The invention provides a cyclic utilization method of chelated landfill waste fly ash, and belongs to the technical field of household waste fly ash utilization. The cyclic utilization method of the chelated landfill fly ash comprises the following steps: S1, collecting the chelated landfill fly ash, crushing the chelated landfill fly ash to a certain particle size, and adding an acid solvent for dechlorination and decalcification treatment; washing the pretreated fly ash with water, and drying until the water content is 5-20%; s2, an additive is added into the dehydrated pretreated fly ash, the additive comprises a binder, a combustible matter and a combustion improver, and the mixture is pressed into balls after being evenly mixed; through the synergistic effect of acid pickling and high-temperature calcination, the degradation rate of dioxin in the fly ash reaches up to 99.89%, meanwhile, the leaching concentration of heavy metal is reduced to be lower than the standard limit value of hazardous waste, the problems of land occupation and secondary pollution of a traditional landfill method are solved, and long-term harm of hazardous waste to the environment is reduced through recycling of the fly ash; and the solid waste treatment principle of reduction, harmlessness and recycling is met.

The invention relates to the technical field of hazardous waste supervision, in particular to a hazardous waste supervision method and system based on multi-source data fusion, and the method comprises the steps: confirming a to-be-supervised hazardous waste set and an RFID tag set, marking the to-be-supervised hazardous waste set through the RFID tag set, obtaining a marked hazardous waste set, and storing the marked hazardous waste set in a database; sequentially extracting identified hazardous wastes from the identified hazardous waste set, and executing the following operations on the extracted identified hazardous wastes: obtaining a transportation video, a waste transportation track, a waste weight parameter and an environment monitoring parameter set, and summarizing the transportation video, the waste transportation track, the waste weight parameter and the environment monitoring parameter set; the method comprises the steps of obtaining hazardous waste multi-source data, obtaining a risk diagnosis report, formulating early warning measures, summarizing the early warning measures, obtaining an early warning measure set corresponding to an identification hazardous waste set, and completing hazardous waste supervision based on multi-source data fusion based on the early warning measure set. According to the invention, the comprehensiveness, accuracy and intelligent level of hazardous waste supervision can be improved.

The invention relates to the technical field of waste gas treatment, in particular to a novel incineration pretreatment process for high-concentration waste gas in the hazardous waste industry. The method comprises the steps that firstly, waste gas enters a liquid seal system; 2, treating the waste gas by a liquid sealing system; step 3, vacuum analysis; 4, waste gas recovery and liquid sealing agent regeneration; step 5, RTO system processing; in the novel incineration pretreatment process for the high-concentration waste gas in the hazardous waste industry, targeted treatment can be carried out through the liquid seal system according to the concentration of the waste gas, the concentration of the high-concentration waste gas is reduced, the concentration of the low-concentration waste gas is improved, the suitability of the waste gas entering an RTO system is improved, natural gas consumption of the RTO system is reduced, the energy cost is reduced, and meanwhile, the environment is protected. When a tempering accident occurs, flame returning can be effectively prevented, the safety of a front-end device area is guaranteed, secondary disasters are completely eradicated, the unique composite liquid sealing agent can dissolve complex waste gas components, good conditions are provided for follow-up treatment, and the environmental protection property of the whole treatment process is improved.

The utility model belongs to the technical field of cement kiln hazardous waste co-processing, and particularly relates to a cement kiln alternative fuel incinerator. A cement kiln alternative fuel incinerator comprises an incinerator body, a blanking platform, a step-shaped combustion platform, a pushing device, a blowing device, a main air inlet, a material inlet and a decomposing furnace connector, the main air inlet, the material inlet and the decomposing furnace connector are arranged on the incinerator body, a C-shaped air guide plate is fixedly connected to the front end face of the combustion platform, and a plurality of air guide holes are formed in the front end face of the air guide plate. An air guide pipe is fixedly connected to the outer side surface of the furnace body at one end of the air guide plate, the air guide pipe is communicated with an inner cavity of the air guide plate, and tertiary air is introduced into the air guide pipe; the blowing device comprises an air cannon fixedly connected to the outer side of the furnace body and a blowing head communicated with the air cannon and arranged below the air guide plate. The combustion temperature fluctuation in the incinerator can be reduced, and the heating uniformity of alternative fuel can be improved so as to improve the combustion efficiency of the alternative fuel.

The invention relates to the technical field of household garbage treatment, in particular to a rural household garbage classification and resourceful treatment circulation system, which comprises straw, harmful garbage, recyclable garbage, kitchen garbage, large household garbage and sludge; the rural household garbage treatment system comprises a household garbage classification system, a household garbage pyrolysis treatment system, a household garbage recycling treatment system, a harmful garbage recycling treatment system, a kitchen garbage recycling treatment system, a large household garbage classification recycling treatment system and a sludge recycling treatment system. By means of a centralized treatment mode of the rural domestic garbage, the problem that landfill of the rural domestic garbage is difficult is solved, corresponding economic value is brought to the rural area, the idea of waste utilization, circular economy, energy conservation and emission reduction is achieved, the rural environment is better, and the economic benefit of the rural area is improved. And a solid foundation is laid for creating a high-quality living environment in rural areas.

The invention relates to the technical field of catalysts, in particular to a catalyst for fire coal and a preparation process thereof, and the catalyst comprises the following materials in parts by weight: 2-8% of rare earth nitrate, 5-18% of alkaline earth metal salt, 2-5% of alkali metal salt, 0.5-1% of copper-manganese composite oxide, 0.2-1.5% of transition metal salt, 0.1-0.3% of nonionic surfactant, 0.05-0.15% of organosilicon compound and the balance of water. The coal-fired catalyst is specially designed for a power plant, has excellent permeation and adsorption performance, solves the problem that the coal-fired catalyst is difficult to uniformly disperse in blocky coal, promotes full combustion of the coal in the power plant, improves the combustion rate and the burn-off rate, eliminates solid hazardous wastes from the preparation raw materials, ensures safety and environmental protection, and is suitable for industrial production. The power plant can be assisted to save coal resources, emission of harmful pollutants can be reduced from the source, and remarkable economic benefits and environmental benefits are brought to the power plant.

The invention discloses a method and a device for treating soil heavy metal pollutants by an electroosmosis technology, and relates to the technical field of soil pollution treatment and remediation, and the method comprises the following steps: constructing an electroosmosis system, a liquid injection system and a pumping drainage system; liquid injection and pumping drainage are conducted, electroosmosis enhancer liquid medicine is injected into the soil, and meanwhile the liquid is pumped drainage till the concentration of the electroosmosis enhancer in the pumped drainage liquid reaches the preset requirement; soaking and electroosmosis are carried out; sampling detection is conducted, and liquid pumping sampling is conducted on the soil in the to-be-treated area till the pollutant residual concentration meets the preset requirement; water injection and pumping drainage are conducted, clear water is injected into the soil, meanwhile, liquid is pumped drainage, and soil treatment is finished until the concentration of the electroosmosis enhancer in the pumped drainage liquid is smaller than or equal to the preset concentration limit value. According to the method, a proper amount of electroosmosis enhancer liquid medicine is injected, heavy metal pollutants are dissociated through the electroosmosis effect and pumped and discharged to the hazardous waste pool, and heavy metal in soil is efficiently and reliably reduced.

The invention provides a composite polyaluminum ferric chloride water purifying agent as well as a preparation method and application thereof, and belongs to the technical field of waste resource recycling and municipal sewage treatment. The industrial hazardous waste aluminum ash is subjected to innocent treatment and then reacts with the pickling steel waste liquid of the steel mill, and the polyaluminum ferric chloride meeting the industrial standard is prepared. The polyaluminum ferric chloride and a cationic adsorbent are compounded according to a specific proportion to obtain the composite polyaluminum ferric chloride water purifying agent. According to the method provided by the invention, the resource recycling of hazardous wastes is realized, and the composite polyaluminum ferric chloride water purifying agent obtained by the method is used for treating municipal sewage, so that the treated water quality can reach the first-grade discharge standard A.

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 belongs to the technical field of data processing, and particularly relates to a multi-dimensional holographic data analysis method and system for hazardous waste supervision, and the method comprises the steps: obtaining fluorescence spectrum data and mass spectrum data; preprocessing the acquired data, and carrying out peak detection by utilizing a first-order derivative of peak intensity based on a preprocessed fluorescence intensity matrix; determining the weight of each peak point in combination with the fluorescence spectrum of the standard sample to complete the matching of peak pairs, and calculating the peak matching distance and the distribution difference of the feature vectors; calculating a similarity score of the spectrum by integrating the peak matching distance and the distribution difference of the feature vectors and combining a matching ratio and a weight ratio; calculating weighted cosine similarity and Euclidean distance between the processed mass spectrum data and the mass spectrum data of the standard sample, and completing calculation of the similarity score of the mass spectrum between the samples; and tracing the source of the hazardous wastes according to the similarity score of the spectrum and the similarity score of the mass spectrum. And accurate traceability is realized through qualitative and quantitative analysis.

The invention discloses an innocent treatment method of dangerous solid waste in firework and cracker production, which comprises the following steps: adding acid into the precipitated dangerous solid waste in firework and cracker production to control the pH value to be less than or equal to 3, stirring to react, adding alkali to control the alkali mass fraction to be 1-20%, stirring to react, adding an oxidizing agent and a catalyst to react, and finally filtering to obtain filter residue and filtrate, filter residues are harmless residues, and filtrate is discharged after reaching the standard. According to the method, combustion treatment and toxic extraction agent treatment are not needed, multiple hazardous wastes can be subjected to innocent treatment at the same time, the treatment cost is low, and the safety is high.

The invention discloses an integrated wet-process waste gas multi-pollutant efficient cooperative treatment device and method. The device is provided with a pre-oxidation section, a centrifugate membrane gas-solid separation section, a wet spraying absorption section, a rotational flow dehydration section, an electrostatic reaction section, a filler demisting section and an adsorption and catalytic reaction section, an air inlet pipe and a liquid discharge pipe are arranged at the bottom of the device, and an exhaust pipe is arranged at the top; the pre-oxidation section comprises a gas inlet pipe, an oxidant injection pipe and a mixing plate; the centrifugate membrane gas-solid separation section, the wet spraying absorption section, the rotational flow dehydration section, the electrostatic reaction section, the filler demisting section and the adsorption and catalytic reaction section are sequentially arranged from bottom to top. By means of the device and method, particulate matter, sulfur dioxide, nitric oxide, fluoride, HCl, heavy metal, VOCs, dioxin, malodorous gas and other waste gas multiple pollutants generated in the solid hazardous waste co-treatment process of the industrial kiln and the industrial boiler can be removed, and waste gas emission meets the emission standard and sensory requirements.

The invention provides a pneumatic needle hammering texturing method which comprises the following steps: controlling a feeding manipulator to act, and conveying a to-be-treated battery cell to a battery cell conveying assembly; the battery cell conveying assembly is controlled to act, and the battery cells are conveyed to a working area of the pneumatic needle assembly; and the pneumatic needle assembly is controlled to act, and the surface of the battery cell is subjected to roughening treatment. According to the pneumatic needle beating texturing method, the pneumatic needle beating method is adopted to replace laser to achieve uniform texturing of the surface of the battery cell aluminum shell, the manufacturing cost is low, the energy consumption is low, the manufacturing cost and the use cost of battery cell aluminum shell texturing equipment are greatly reduced, popularization and application of a UV spraying automatic line are promoted, no hazardous waste such as smoke dust is generated, meanwhile, the texturing efficiency is high, and the texturing effect is good. And the battery cell aluminum shell passes through the pneumatic needle array to finish texturing.

The invention relates to the technical field of hazardous waste utilization, in particular to a comprehensive utilization method of a waste catalyst. The method specifically comprises the following steps: sequentially carrying out oxidizing roasting, wet ball milling and pressure leaching on the waste catalyst to obtain a first leaching solution and leaching residues; the first leachate is extracted in a multi-stage counter-current extraction mode, molybdenum and tungsten in the first leachate are extracted, and back extraction is conducted to obtain back extraction liquid containing molybdenum and tungsten; the strip liquor is subjected to standing deoiling, evaporation concentration and multi-stage counter-current extraction vanadium removal in sequence, and raffinate and vanadium-containing strip liquor are obtained; the raffinate mainly contains molybdate radicals and tungstate radicals; determining a separation mode according to different molar ratios of molybdenum and tungsten; carrying out acid leaching on the leaching residues by utilizing a sulfuric acid solution at normal temperature and normal pressure to obtain a second leaching solution; and a cobalt extraction agent and a nickel extraction agent are respectively used for extraction, and a cobalt sulfate product and a nickel sulfate product are obtained after reverse extraction and evaporative crystallization. According to the method provided by the invention, metal resources such as vanadium, tungsten, cobalt, molybdenum and nickel in the waste catalyst can be recycled.

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 discloses gamma-butyrolactone single-tower rectification equipment and a treatment process thereof, and relates to the technical field of gamma-butyrolactone preparation.The gamma-butyrolactone single-tower rectification equipment comprises a feeding pump, a rectification tower, a first cooler, a second cooler, a hazardous waste storage tank, a finished product storage tank and a vacuum pump, the rectification tower comprises a tower shell, and tower plates are evenly arranged in the tower shell in the height direction; an overflow weir is arranged on one side of the tower plate, and a downflow plate is connected below the overflow weir; bubble cap assemblies are uniformly distributed above the tower plate, and each bubble cap assembly comprises a breather pipe, a rotary steam distribution component and a cyclone structure; the bottom end of the ventilation pipe is fixed at the top of the tower plate and forms a ventilation channel penetrating through the tower plate; the top end of the ventilation pipe is higher than the highest point of the overflow weir. Through structural innovation and process optimization, high purity of the product is guaranteed, energy consumption and material consumption are reduced, high efficiency, intelligence and environmental friendliness are achieved, and an advanced solution is provided for rectification production of gamma-butyrolactone.

The present invention relates to a process for cleanly and efficiently removing arsenic from waste acid and its comprehensive utilization, wherein a certain amount of FeS is added under suitable conditions to precipitate arsenic in the waste acid in the form of arsenic sulfide. The present invention comprehensively utilizes sulfuric acid therein, and the whole process does not generate hydrogen sulfide gas, does not adjust the pH value, and does not discharge wastewater, generate worthless hazardous waste, or generate waste gas such as hydrogen sulfide in the whole production process, so that no secondary environmental pollution will be caused.

The invention discloses a method for preparing lithium carbonate by using a waste lithium iron phosphate positive electrode material, which comprises the following steps: pulverizing the waste lithium iron phosphate positive electrode material, sieving, fully mixing the pulverized waste lithium iron phosphate positive electrode material with concentrated sulfuric acid, and carrying out dump leaching for 6-12 hours; primary leaching: raw materials come from secondary leaching residues, acid is adjusted to the pH value of 1.5-2.0, sodium ferrate is added, stirring leaching is performed at the temperature of 60-70 DEG C, leaching liquid serves as secondary leaching liquid, and leaching residues are recycled to be used for preparing iron phosphate raw materials; and secondary leaching: the solution comes from the primary leaching solution, acid is consumed by using heap leaching raw materials, the end point PH is controlled to be 3.0-3.5, sodium ferrate is added, and stirring leaching is performed under the condition of 45-55 DEG C. No hazardous waste is generated in the whole process, leaching residues are used as raw materials for preparing iron phosphate, calcium carbonate can be recycled for acid adjustment, and harmless treatment is truly achieved.

The invention relates to the technical field of route planning, and particularly discloses an intelligent hazardous waste transportation route planning method and system based on environmental adaptability, and the method comprises the steps: 1, dividing a hazardous waste related total region, and obtaining a plurality of sub-regions; step 2, acquiring a dangerous waste coefficient of each sub-region; 3, evaluating the influence of the hazardous wastes on each sub-region, judging whether the sub-region is a region needing to be avoided or not, and generating a region evaluation signal; 4, a dangerous waste transportation route is preset, and a plurality of preset routes are obtained; 5, analyzing the preset route to obtain a hazard coefficient of the preset route; 6, based on the hazard coefficient, evaluating the hazard degree of the preset route, judging whether the preset route is available or not, and generating a route evaluation signal; 7, sorting all the available routes based on the route available signals; according to the method, the environmental risk in the transportation process is effectively reduced, and the safety of an ecological system and public health is guaranteed.