95results about How to "Harmless treatment" patented technology

The invention discloses a recycling process of positive electrode materials of waste batteries. The recycling process includes the steps of completely discharging the waste lithium batteries, subjecting the waste lithium batteries to primary crushing under inert gas protection, removing diaphragm paper through air classification after crushing, performing low-temperature pyrolysis, respectively removing iron materials and aluminum materials through sorting, performing re-pulverization to obtain electrode powder, determining a flotation reagent system according to the phase composition of the electrode powder, performing flotation in a flotation tank, and filtering and drying products at the bottom of the flotation tank to obtain the positive electrode materials; according to the Li/M ratioof the positive electrode materials, calculating the lithium source powder to be added, and mixing water-soluble dispersants and the lithium source powder with water to form a mixed solution; addingthe positive electrode materials to be repaired into the mixed solution, performing cooking activation at a high temperature and under high pressure, continuing to dry the product under normal pressure to obtain uniform mixture powder, and calcining the mixture powder under an aerobic condition to obtain the regenerated and repaired lithium ion battery positive electrode materials. The recycling process has the advantages of low repair cost, high activity after repair, and higher promotion and application value.

The invention relates to a waste recovery technology, in particular to a method for recovering glass substrates of a liquid crystal display screen, which comprises the following steps of: A, detaching; B, classifying; C, recovering a glass substrate containing a resin black matrix membrane; D, recovering a glass substrate containing a chromium black matrix membrane; and E, recovering a matrix-free glass substrate. By the method, innocent treatment of the glass substrates is realized, secondary pollution is avoided, different treatment methods for different types of glass substrates are provided, and time and cost are saved; and by the technical route, the glass substrates can be effectively recovered and are easily treated, and the method is suitable for industrialization.

The process of producing biomass fuel, biological haydite and active carbon with city garbage with high water content as raw material includes the following steps: sorting and crushing garbage, drum screening, preparing biomass fuel, biologically fermenting and dewatering, preparing biological haydite and active carbon, etc. The present invention makes it possible to make best utilization of garbage resource.

The invention provides a method and a system for drying aerobic organisms in urban raw garbage by the aid of hot air. Organic matters in the urban raw garbage are decomposed into moisture and other inorganic matters by the aerobic microorganisms in the urban raw garbage with high-temperature biological conditioners by the aid of oxygen provided by the hot air and a formed high-temperature environment, heat is released, most of the moisture is heated and evaporated into steam by the high-temperature environment and the heat, the steam is exhausted in a wet and hot waste gas form, garbage leachate is formed by an additional part of the moisture and drained, and the purpose of drying the aerobic organisms in the urban raw garbage is achieved. The system comprises an urban raw garbage aerobic organism drying bin, a hot-air auxiliary drying device, an air feeder, an exhaust fan, a liquid delivery pump and the like. The method and the system further can be optimized by means of automatic control, waste gas preheating, photocatalytic sterilization and deodorization and the like. The method and the system for drying the aerobic organisms by the aid of the hot air have the advantages that the decomposition degree of the organic matters in the urban raw garbage and moisture evaporation capacity are high, a drying process is short, a drying effect is obvious, and the garbage is treated in a harmless, reducing and stable manner.

The invention discloses a comprehensive utilization method of secondary aluminum ash, which comprises the following steps: crushing and grinding the secondary aluminum ash, uniformly mixing the crushed and ground aluminum ash with an additive, roasting, and recovering sintering gas; taking out a roasted clinker, cooling to room temperature, dissolving out by using dilute alkali liquor or water, carrying out solid-liquid separation to obtain a filtrate which is a sodium aluminate crude solution, adding calcium oxide, carrying out seed crystal decomposition and high-temperature calcination on asodium aluminate solution subjected to deep desilicication to obtain aluminum oxide, and returning insoluble filter residues which are fluorine-containing residues to an electrolytic cell for use; according to the method, aluminum oxide, nitride and fluoride in the aluminum ash are effectively separated, an aluminum oxide product is obtained, recycling of the nitride and the fluoride is achieved,and a new way for secondary comprehensive utilization of the aluminum ash is opened up.

The invention provides a method and a system for drying high-temperature waste gas aerobe in urban raw refuse. High-temperature biological modifiers are involved in modification for the aerobe in the urban raw refuse, oxygen provided by mixed outdoor fresh air and a high-temperature environment provided by high-temperature waste gas are used for decomposing organic matters in the urban raw refuse into water and other inorganic matters, heat is released, most of the water is heated and evaporated into water vapor by the aid of the high-temperature environment and the heat and then is discharged in the form of damp and hot waste gas, and accordingly, the aerobe in the urban raw refuse is dried. The system comprises an urban raw refuse aerobe drying bin, an air feeder and the like. Further optimization can be realized by methods and systems for automatic control, photocatalytic sterilization deodorization and the like. Owing to the high-temperature waste gas, the organic matters in the urban raw refuse are higher in decomposition degree, larger in water evaporation amount, shorter in drying process and more remarkable in drying effect, and the refuse can be reduced and harmlessly and stably disposed.

The invention discloses an air/vanadium redox flow battery, belonging to the technical field of power and energy storage. The cell of the air/vanadium redox flow battery is mainly composed of a positive pole, a negative pole and a negative pole liquid storage tank, wherein the positive pole and the negative pole are separated by a proton transfer film; the positive pole is a gas diffusion electrode and uses oxygen and water in air as active substances; the active substance of the negative pole is a vanadium-containing electrolyte, and is arranged in the negative pole liquid storage tank; the negative pole liquid storage tank, a liquid pump and the negative pole are connected through pipelines to form an electrolyte circulation loop; and a conductive buffer layer is arranged between the positive pole and a positive pole current collector. The air/vanadium redox flow battery has the advantages of easy scale-up implementation, long circulation life, simple structure, lower material price, high energy density, high power intensity and the like, does not generate any pollutant in the whole charging/discharging process, is suitable to be used as large-scale electric energy storage equipment in a wind or solar power generation system, and can be widely used in electric power, transportations and other industries.

The invention discloses an intelligent sludge incinerator. The sludge incinerator comprises an outer furnace body, an inner furnace body, a base, an electrically driven automatic slag discharge grate, a screw feeder, an automatic slag discharge device, a diesel oil burner, a primary air inlet system, a secondary air inlet system and a controller, wherein the controller is used for controlling one or more temperature sensors arranged at a hearth, a smoke outlet and a primary inlet, an oxygen quantity sensor arranged at the smoke outlet and a weight sensor for automatic slag discharge. The intelligent sludge incinerator can realize reduction and harmlessness of sludge by adopting a bubbling suspension combustion method, and meanwhile realizes low discharge of pollutants; the combustion is stable by automatic control of parameters of primary and secondary air inlet, and the temperature in the incinerator is controlled at 850 to 950 DEG C all the time for combustion; and the sludge incinerator has high automation degree, saves labor, relieves labor intensity, realizes stable incineration of the sludge, obviously reduces the fault rate, and has low maintenance expense and humanized operation.

The invention provides a water-based well drilling waste harmless treatment device and method, and application. The water-based well drilling waste harmless treatment device comprises a non-landing collecting unit, a liquid-phase regeneration treatment unit and a solid-phase harmless treatment unit, and the non-landing collecting unit communicates with the liquid-phase regeneration treatment unitand the solid-phase harmless treatment unit; and the liquid-phase regeneration treatment unit communicates with the solid-phase harmless treatment unit. According to the water-based well drilling waste harmless treatment device and method, the land cost and the treatment cost are saved, and the costs of well drilling waste harmless treatment, excavation of a landfill pool, seepage prevention and the like are saved; and indexes, such as pH, COD, color, petroleum type and the like, of a prepared base soil and burning-free building block leaching agent s after well drilling waste is subjected toharmless treatment reach the environmental protection requirement, the burning-free building blocks and the base soil reach the related building material standard, and regeneration and reuse and recycling of the well drilling waste are achieved.

The invention relates to a microbial compound fungicide for treating oil base drilling cuttings as well as a preparation method and application of the microbial compound fungicide. The compound fungicide comprises pseudomonas aeruginosa with a collection number of CGMCC NO:8983 and acinetobacter baumannii with the collection number of CGMCCNO:8984. The invention further discloses the preparation method of the microbial compound fungicide and application of the compound fungicide in treatment of oil base drilling cuttings. The preparation method includes preparation methods of liquid and solid fungicides.

The invention discloses a method of harmlessly treating electrolytic manganese residue percolate, characterized by comprising the steps of 1), percolating electrolytic manganese residue percolate collected in a residue storage to obtain clarified filtrate; 2), adding saturated clarified limewater in a container of the clarified filtrate, and adjusting pH of a solution to 7.0-8.0 to obtain mixture A; 3), adding sodium silicate powder into the mixture A, and stirring for 1-2 hours to obtain mixture B, wherein a weight-volume ratio (g:mL) of the sodium silicate to the clarified filtrate of step 1) ranges from 1:150 to 1:200; 4), adding sodium chloride crystal into mixture B, and stirring to obtain mixture C, wherein sodium chloride concentration in the mixture C ranges from 200 mg/L to 250 mg/L; 5), adding a positive plate and a negative plate into a container of the mixture C, loading an electric field, and stirring for 3-4 hours to obtain the electrolytic manganese residue percolate that is harmlessly treated, wherein voltage of the electric field is 10-20 V.

The present invention is method of separating biomass fuel material, biological haydite material and active carbon material from wet mixed city refuse simultaneously. The method includes the steps of sorting and crushing refuse, drum screening, preparing biomass fuel material, biologically fermenting and dewatering, preparing biological haydite material, preparing active carbon material, etc. The present invention can make best utilization of refuse resource, reduce environmental pollution and power consumption and treat refuse in harmless mode.

The invention relates to a composite sludge deep dehydration conditioner as well as an application and an application method thereof, which belong to the technical field of resource environment and sludge treatment. The conditioner is prepared from the following raw materials in percentage by mass: 1 to 2 percent of a strong oxidant, 19 to 40 percent of an inert substance and 59 to 80 percent of strong cationic polyelectrolyte. The compound sludge deep dehydration conditioner designed by the invention has the advantages of high conditioning speed, high sludge dehydration rate, small sludge increment, simplicity in operation, high sludge volume reduction rate and the like, so that the compound sludge deep dehydration conditioner can be widely applied to conditioning and enhanced deep dehydration of sludge.

The invention discloses a method for comprehensively treating waste iron oxide desulfurizer and chromium slag so as to solve the problems that the conventional waste iron oxide desulfurizer contains FeS, the treating process is complex, the safety is low, the investment is high, the running expense is high and certain defects are existent in the conventional chromium salt detoxifying method. The method comprises two steps of pre-treating and mixing for reaction. According to the method, the two wastes are skillfully treated by each other and interact with each other to achieve the purpose of treating wastes with wastes; harmless treatment on the waste iron oxide desulfurizer and the chromium slag is effectively achieved while no other additive is used, so that the treatment cost is effectively reduced; the method is simple in process and convenient to operate, and has the characteristics of energy conservation, economy and environmental protection; the method is of important significance for solving the problem of the treatment of the waste iron oxide desulfurizer and the chromium slag, and especially can be used for effectively treating the chromium slag to effectively reduce harm of the chromium slag to the environment.

The invention relates to a method for utilizing high-pressure hot air to automatically separate waste circuit board elements. The method includes using a screw structure to fix to-be-separated circuit boards on a conveying belt for conveying, and using high-pressure high-temperature air flow impact to separate substrates and the elements of the circuit boards, wherein high-pressure high-temperature air flows are blown out in a way like air knives or air knife slotting openings to remove soldering flux and force the elements to fall off. By the method, industrial application of the automatic waste circuit board element separation, harmless treatment is performed on toxic and harmful gases, the circuit boards are treated efficiently, a large amount of valuable elements are recycled losslessly, and recycling is possible.

The invention belongs to the technical field of medical treatment and epidemic prevention equipment and particularly relates to a gas disinfection device for preventing infection. In view of problemsof the existing gas disinfection equipment that gas cannot be in full contact with a disinfection mechanism, a minority of gas cannot disinfect thoroughly, and the efficiency of disinfection is low, ascheme is proposed at present as follows: the gas disinfection device comprises a base, wherein a box body with an open side is mounted at the top of the base, a box cover is arranged at one side ofthe box body, a sleeve with a closed top is welded to the top of the box body, the bottom of the sleeve communicates with the interior of the box body, the outer side of the sleeve is connected with one side of a gas inlet pipe, the other end of the gas inlet pipe extends to the outer side of the sleeve and is connected with a gas collection hood, and a motor is mounted at the top of the sleeve. The gas disinfection device is reasonable in design, gas exhaled from a sufferer can be effectively collected and uniformly blown into the box body, the gas can be thoroughly heated, microbes such as bacteria in the gas are killed, and innocent treatment on the gas exhaled from the sufferer is achieved so as to prevent the other people from being infected.

The invention discloses a comprehensive treatment method for a zinc hydrometallurgy high-content germanium raw material and calcium sulfite residues. The method comprises the following steps that 1), pulpifying of zinc leaching residues is performed; 2), pulpified ore pulp leaching is performed; 3), neutralization and reduction are performed; 4), calcium residue weak acid washing is performed; and 5), tannic germanium precipitation is performed. According to the comprehensive treatment method, when germanium is directly recycled in the zinc hydrometallurgy process, the simple and convenient method is adopted, the calcium sulfite residues generated when sulfur dioxide is absorbed through a double-alkali method during volatilization of a rotary kiln are comprehensively treated, and a marketable calcium sulfite industrial raw material is obtained; and recycling of resources is achieved, the environmental protection risk is eliminated, the production cost is saved, and meanwhile it is effectively guaranteed that the germanium is smoothly recycled from the zinc hydrometallurgy high-germanium raw material.

The invention discloses a harmless treatment process of electrolytic aluminium scum and belongs to the technical field of solid waste cyclic utilization in the aluminium electrolysis industry. The harmless treatment process comprises the following steps: aluminium scum after crushing and impurity removal, a catalyst (mixture of nitrate of potash and sodium chloride) and a reactant (mixture of positive cryolite and metallurgical-grade aluminium oxide) are uniformly mixed, and in a combustion furnace, nitrate of potash generates decomposition when burns at 600-760 DEG C to generate combustion-supporting gas namely oxygen so as to enable carbon in the aluminium scum to fully burn; sodium chloride has an accelerating and catalytic action on decomposition of ammonium nitrate category substances; and the metallurgical-grade aluminium oxide can effectively adsorb melted sub cryolite and fluoride salt. With adoption of the harmless treatment process, in burnt aluminium scum residual ash, the carbon content is 3%, and regeneration electrolyte is obtained through molecular ratio adjustment; in burnt exhaust gas, content of fluoride salt is less than 3mg/m3, content of dust particle is less than 20mg/m3, and the burnt aluminium scum residual ash can be directly discharged to the atmosphere after being connected into an aluminium electrolysis exhaust gas purifying system through purification, so that the harmless treatment purpose of electrolytic aluminium scum is realized.

The invention relates to a method for preparing fertilizer by jointly treating agricultural waste with an ultrasonic wave and an alkali. The method comprises the following steps of S1, providing a fertilizer preparation device; S2, obtaining a waste organic matter; S3, obtaining a pretreated material; S4, carrying out solid-liquid separation, and obtaining liquid and a solid; S5, obtaining concentrated liquid fertilizer; S6, obtaining organic fertilizer. According to the method, through the unique fertilizer preparation device and unique process steps and the parameter selection of the preparation method, multiple excellent effects can be consequently obtained through a synergic effect; the concentrated liquid fertilizer and the organic fertilizer with excellent effects can be obtained; consequently, the method has favorable application prospect and industrialized production potential in the field of utilization of agricultural waste resources.