934 results about "Hazardous waste" patented technology

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 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 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.

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 discloses hazardous waste-containing sludge solidification mixing equipment which comprises a stirring box and two stirring shafts located in the stirring box, and a first stirring blade, a second stirring blade, a third stirring blade and a fourth stirring blade are rotationally connected to rotating cylinders of the stirring shafts respectively; a first adjusting rod, a second adjusting rod, a third adjusting rod and a fourth adjusting rod which are coaxial are arranged in the rotating cylinder, the first stirring blade is connected with the first adjusting rod through a first connecting structure, the second stirring blade is connected with the second adjusting rod through a second connecting structure, and the third stirring blade is connected with the third adjusting rod through a third connecting structure. The fourth stirring blade is connected with a fourth adjusting rod through a fourth connecting structure, the angle change of the stirring blade can be formed by moving the adjusting rod, the angle of the stirring blade on the stirring shaft of the sludge solidification mixing equipment can be adjusted, so that different stirring modes are formed, and the stirring requirements of different sludge-solidification agent systems are met.

The invention discloses a hazardous waste disposal traceability management system and method based on a block chain, and relates to the technical field of block chains. The system comprises a data integration module, a risk dimension evaluation module, a risk level analysis module and a real-time management and control module. The data integration module collects hazardous waste full life cycle data and uploads the data to the block chain, and a mapping relation table is established; the risk dimension assessment module analyzes the data chain to identify a full-link state and generate a multi-dimensional risk assessment parameter; the risk level analysis module calculates risk indexes in combination with the state matrix, and divides high, medium and low risk levels; and the real-time management and control module monitors the real-time data of the current link, judges the risk controllability, adjusts the processing strategy, and updates the block chain data. According to the invention, real-time traceability and dynamic management and control of hazardous waste disposal whole-process risks are realized, and the comprehensiveness and timeliness of risk assessment are improved.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a method for removing metal impurities from acidic copper-containing etching wastewater at normal temperature and pressure. The method for removing the metal impurities from the acidic copper-containing etching wastewater at normal temperature and pressure comprises the following steps: S1, adding an oxidizing agent into the acidic copper-containing etching wastewater to carry out oxidation-reduction reaction to obtain a pretreatment solution; and S2, phosphoric acid or soluble phosphate is added into the pretreatment solution, the pH is adjusted to 1.3-1.7 through a pH adjusting agent, stirring and filtering are conducted, and the purified copper-containing solution is obtained. According to the method, the removal rate of Fe, Ni, Zn, Ca and Mg is high, high-content copper ions can be kept, a high-purity copper salt product can be recycled and regenerated to be applied to the fields of food, cosmetics, medical treatment, electroplating and the like, hazardous waste can be reduced, economic benefits are improved, and cost is greatly reduced.

The invention relates to the technical field of bag-type dust removers, in particular to a bag-type dust remover in a hazardous waste incineration system, the bag-type dust remover comprises a shell and a filter bag assembly, the shell is provided with two air chambers which are communicated with each other, and an air inlet and an air outlet which respectively correspond to the positions of the two air chambers; the filter bag assembly is arranged at the communicating part of the two air chambers and used for filtering air, the filter bag assembly comprises a filter bag and a screen frame used for supporting the filter bag, the screen frame is provided with a first end part and an annular side part composed of a plurality of elastic supporting strips, and the annular side part is provided with a first opening and a second opening which are opposite to each other; the first opening is fixed at the communicating part of the two air chambers, the second opening is fixedly provided with a first end part, the filter bag is sleeved outside the annular side part, and two ends of the filter bag are respectively fixed with the first end part and the communicating part. The inner side of the filter bag can be effectively supported during flue gas purification, and when caked dust is attached to the outer side of the filter bag, the caked dust on the outer side of the filter bag can be rapidly removed.

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.

A wastewater recycling device for a hydrogen fluoride production line is characterized in that a water outlet of a recycling water tank is connected to a spiral humidifying distributor through a connecting pipeline, the recycling water tank is sequentially provided with a primary reaction tank, a primary sedimentation tank, a secondary reaction tank, a secondary sedimentation tank and a fluorine removal agent adding tank from top to bottom, the primary reaction tank is located at a water inlet of the recycling water tank, and the secondary reaction tank is located at a water outlet of the recycling water tank. The first-stage reaction tank is communicated with the first-stage sedimentation tank, the first-stage sedimentation tank is communicated with the second-stage reaction tank, the second-stage reaction tank is communicated with the second-stage sedimentation tank, and the second-stage sedimentation tank is connected with the spiral humidification distributor through the fluorine removal agent adding tank. The wastewater recycling device for the hydrogen fluoride production line has the beneficial effects that the wastewater recycling device for the hydrogen fluoride production line can realize all recycling of production wastewater of hydrogen fluoride production enterprises, not only solves the problems that gypsum slag is easy to raise dust in the loading process due to high temperature and small granularity and dangerous wastes are avoided, but also realizes zero discharge of the production wastewater of the hydrogen fluoride production enterprises; and the unorganized emission of dust is reduced.

The invention discloses a method for separating and recovering selenium and mercury from acid mud containing selenium and mercury. The method comprises the following steps: mixing the acid mud containing selenium and mercury with water, performing wet ball milling, filtering and drying to obtain a ball milling material; adding a hydrogen peroxide solution into the ball-milled material, adding hydrochloric acid to adjust the acidity, carrying out oxidation acid leaching, and carrying out solid-liquid separation to obtain selenium-containing mercury liquid and selenium-removed mercury slag; adding thiourea into the selenium-containing mercury liquid for selective reduction, and performing solid-liquid separation to obtain crude selenium and reduction liquid; zinc powder is added into the reduction liquid for mercury replacement and precipitation, and crude mercury and precipitation liquid are obtained after solid-liquid separation; wherein the selenium-removed mercury slag and the precipitation solution are subjected to centralized treatment. The method is simple in process, convenient to operate and easy to process, selenium and mercury in the acid mud containing selenium and mercury can be removed at a time, efficient separation and recovery of selenium and mercury in the acid mud containing selenium and mercury are achieved, harmless treatment of hazardous waste and effective utilization of resources are achieved, and the method conforms to the concept of green sustainable development.

The invention provides a dangerous waste landfill leakage emergency shield blocking and co-processing method and system, and relates to the technical field of underground pollution prevention and control and environment emergency treatment. On-site monitoring data are collected under the unified space-time reference, a pollution feather envelope line and shield curtain geometry are determined based on rapid inversion, a shield tunneling machine is driven to form a waterproof curtain, functional pipe pieces are arranged, an inward flow field is established in the curtain, and the water level difference and the negative pressure level are controlled in real time. The control terminal calculates a risk evaluation and dosage flow velocity instruction set according to the monitoring data and the extraction parameter set, and issues the risk evaluation and dosage flow velocity instruction set to the grouting, extraction and agent injection system to realize synchronous operation of curtain reinforcement and in-situ chemical repair; when the risk and repair indexes reach the standard, load reduction and plugging are carried out, and long-term monitoring is carried out. According to the method, rapid sealing control, dynamic repairing and intelligent decision making of the hazardous waste leakage area are achieved, and the accuracy of emergency disposal is improved.

The invention discloses a 1, 4-bis (4-fluorobenzoyl) benzene production waste utilization process, which belongs to the technical field of 1, 4-bis (4-fluorobenzoyl) benzene production, and comprises the following steps: dissolving waste leftovers in a solvent, and adsorbing and removing pigments and solid particles in the leftovers by activated carbon; carrying out dehalogenation and hydrogenation on the pretreated leftovers in the presence of a hydrogenation catalyst and an alkaline substance to produce 1, 4-biphenyl acyl benzene; and carrying out separation and purification on the hydrogenation product in a solution crystallization manner to obtain 1, 4-biphenyl acyl benzene with the purity of more than or equal to 99.75%. The waste leftovers are used for producing the 1, 4-biphenyl acyl benzene, so that the utilization rate of the raw materials is increased, the discharge of hazardous wastes is reduced, and the method is green and environment-friendly.

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 provides a water resource recycling system in a mining process and a recycling method thereof, and relates to the technical field of mining and mine wastewater utilization. The system comprises: a pretreatment module for collecting and removing suspended solids in wastewater and adjusting water quality to obtain pretreated water; the resource recovery module is used for recovering heavy metals and salts from the pretreated water and carrying out resourceful treatment on organic matters to obtain recovered water; the deep treatment module is used for degrading and recycling residual pollutants in water and further desalting to obtain treated water; the crystallization and solidification module is used for separating harmless salt and solidifying hazardous wastes from the treated water to obtain solidified bodies and discharge water reaching the standard; and the intelligent control module is used for monitoring operation parameters of each module in real time and carrying out dynamic optimization and early warning. The system realizes efficient recovery of heavy metals, salts and organic matters by aiming at complex wastewater containing heavy metals, high salts and organic matters generated by mining, and breaks through the limitation of traditional single resource recovery.

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 utility model provides a phosphorus-containing waste solidification treatment system, which belongs to the technical field of hazardous waste solidification treatment and comprises a hydrolysis system, a concentration system, a solidification system and a waste gas treatment system, and the waste gas treatment system comprises a first waste gas treatment system and a second waste gas treatment system. The outlet end of the hydrolysis system is communicated with the inlet end of the concentration system through a pipeline and a pump, the outlet end of the concentration system is communicated with the inlet end of the curing system through a pipeline and a pump, waste gas outlets are formed in the hydrolysis system, the concentration system and the curing system respectively, and the waste gas outlets of the hydrolysis system and the concentration system are communicated with the first waste gas treatment system. The system is simple in structure and convenient to use and operate, phosphorus-containing waste is effectively and directly landfilled after being treated, the treatment process is environmentally friendly and harmless, the cost is low, and waste is treated with waste.

The invention relates to the technical field of waste treatment, and particularly discloses a hazardous waste crushing treatment device which comprises a machine body and a crushing device. A feeding bin is arranged on the side of the machine body, and a bottom plate of the feeding bin is a sliding way inclining towards the crushing device. The hazardous waste crushing treatment device further comprises an abutting device connected to the machine body, and the abutting device is arranged above the crushing device. A driver of the abutting device is used for driving an abutting plate to push materials in the gravity direction. An abutting plate of the abutting device is arranged between the feeding bin and the crushing device; an outlet of the feeding bin extends to the position under the abutting plate, and a pushing lip protruding in the direction of the crushing device is arranged at the bottom of the abutting plate. The bottom face of the pushing lip is an inclined guide face, and the inclined direction of the pushing lip is consistent with the discharging direction of the feeding bin. Therefore, the problems that in the prior art, a waste crushing treatment device is complex in structure, low in fault tolerance and prone to fault shutdown are solved; and meanwhile, the materials can be effectively crushed, and the crushing quality and the crushing efficiency of the materials are improved.

The invention discloses a preparation method and application of in-situ nitrogen-doped antibiotic mushroom dreg-based magnetic biological carbon spheres, and belongs to the technical field of hazardous waste recycling and wastewater treatment. According to the method, the antibiotic mushroom dregs are used as a precursor, ferric trichloride is used as an iron source, the degradation of residual antibiotics and in-situ nitrogen atom doping are synchronously realized through a'freeze drying-pyrolysis' process under the condition of not adding an external nitrogen source by utilizing rich nitrogen elements of the antibiotic mushroom dregs, and the physical and chemical properties of the biological carbon material are improved; therefore, the adsorption performance is enhanced; and further preparing the magnetic biological carbon spheres with stable structure and excellent magnetism by utilizing a cross-linking reaction of sodium alginate and calcium chloride. The magnetic biological carbon sphere is applied to efficient treatment of antibiotic wastewater, has the characteristics of rapid separation and cyclic utilization, effectively reduces the wastewater treatment cost, realizes harmless treatment and resource utilization of antibiotic residues, and shows excellent environmental benefits and economic values.

The invention relates to an intelligent scheduling method and system for hazardous waste transportation, and the method comprises the steps: collecting hazardous waste inventory data of a hazardous waste intelligent outdoor warehouse through an industrial solid waste intelligent management system, carrying out the capacity monitoring, and generating a clearance task instruction; hazardous waste characteristic information of the hazardous waste inventory data is identified, transportation analysis is carried out in combination with the clearance task instruction, and a transportation task list is generated; matching vehicle information with transportation qualification according to the transportation task list, and generating a hazardous waste transportation path in combination with real-time traffic data; and integrating the transportation task list and the hazardous waste transportation path to generate an electronic waybill. According to the invention, visual monitoring of the whole transportation process can be realized, and full-process digital management is provided for hazardous waste transportation.

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.

The invention relates to the technical field of rotary kiln incinerator multi-parameter control, in particular to a rotary kiln incinerator multi-parameter collaborative optimization control system which comprises a temperature monitoring module, a spraying control module, an ash monitoring module, a coking analysis module and a regulation and control feedback module. According to the method, the corresponding hazardous waste incineration stages in all the areas in the rotary kiln incinerator are monitored in real time, due to the fact that the incineration areas are extremely prone to melting to form viscous melts, the melts adhere to the inner wall of the rotary kiln to cause coking of the rotary kiln, flowing of materials is hindered along with thickening of the coking materials, and therefore the hazardous waste incineration efficiency is improved. As the refractory material is extremely easy to damage and fall off, the service life of the refractory material is prolonged by analyzing the ash, identifying the wall-hanging high-risk period and the formation cause of the coking product, timely regulating and controlling each operating parameter in the rotary kiln incinerator, identifying the coking caused by refractory material degradation through the damage early warning model, and timely responding to the shutdown of the rotary kiln. And effective coking control of the rotary kiln incinerator is realized.

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 invention discloses a method for synthesizing butyl zirconate and butyl hafnate, and relates to the technical field of material synthesis, and the method comprises the following steps: mixing and stirring: putting a solvent n-heptane into a reaction kettle, putting a certain amount of hafnium tetrachloride (or zirconium tetrachloride) solid into the reaction kettle, putting a certain amount of n-butyl alcohol into the reaction kettle, and stirring for 30-60 minutes; finally, stirring; organic synthesis: introducing ammonia gas in the stirring process in the step S1, and setting the reaction temperature to be 45 DEG C or below and the reaction pressure to be normal pressure; performing solid-liquid separation; organic distillation; compared with the existing process, the preparation method has the advantages that the preparation cost of the product is greatly reduced through an organic synthesis and secondary distillation treatment mode; and secondly, in the preparation process, the generation of pollutants, especially triethylamine hydrochloric acid, is reduced, the generation of hazardous wastes is avoided, only deacidification and ammonium chloride removal treatment are needed, and compared with the existing process, the cost is greatly reduced, and the environmental protection benefit is relatively obvious.

The invention discloses a harmless wet treatment method for secondary aluminum ash, which comprises the following steps: mixing secondary aluminum ash powder and desulfurized gypsum, drying and ball-milling to obtain a mixed dry material; adding water and an alkaline compound into the mixed dry material, and carrying out hydrolysis reaction under a water bath condition to obtain mixed slurry; and carrying out ultrasonic treatment and suction filtration on the mixed slurry. According to the method, safe denitrification of the aluminum ash and synchronous high-efficiency fluorine fixation can be realized, the water reactivity of the aluminum ash is effectively reduced, the corrosivity of an aluminum ash product is greatly reduced, and the aim of effectively treating and utilizing hazardous wastes can be achieved.

According to the glufosinate-ammonium mother liquor decolorizing device provided by the invention, the glufosinate-ammonium mother liquor is decolorized by arranging the resin adsorption device, and the resin column in the resin adsorption device is filled with the resin, so that the glufosinate-ammonium mother liquor decolorizing device has the characteristics of large treatment capacity, easiness in regeneration and high cyclic utilization rate during decolorizing; the problems that the amount of generated hazardous waste is large and the hazardous waste is not easy to treat due to the fact that the usage amount is large and regeneration is not easy after adsorption saturation when activated carbon is adopted for decolorizing glufosinate-ammonium mother liquor wastewater in the prior art are solved. A first resin column and a second resin column in the resin adsorption device are connected with the mother liquor storage tank, the decolorizing mother liquor storage tank, the backflushing liquid storage tank and the solvent storage tank through a plurality of valves respectively, and the other resin column can continue to work when the first resin column or the second resin column is subjected to backflushing regeneration through control of the valves; and the continuous decoloring process is effectively ensured.

The application provides a denitration and CVOCs removal encapsulated bifunctional molecular sieve catalyst and a preparation method and application thereof. y The composite nanoparticle is a core, and the hierarchical porous molecular sieve is a shell layer x -BO y The hierarchical porous-zeolite bifunctional molecular sieve catalyst is prepared by coupling two methods of reverse microemulsion and one-pot two-step dry gel conversion. The catalyst exhibits excellent NO x / CVOCs cooperative catalytic removal activity and stability in a medium-low temperature range (180-520 DEG C), and is suitable for simultaneous purification and removal of NO x and CVOCs in flue gas of waste incineration power generation and hazardous waste incineration pyrolysis industries. The catalyst preparation method is simple, can improve the flue gas pollutant purification efficiency, reduce the industry operation energy consumption and save the production cost.

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.