19results about How to "Realize harmless treatment" patented technology

The invention discloses a method for co-processing chromium-containing aluminum mud and electrolytic aluminum overhaul slag, which comprises the following steps of: oxidizing cyanide in the finely ground overhaul slag into carbon dioxide and nitrogen by using hexavalent chromium with strong oxidizing property in the chromium-containing aluminum mud under an acidic condition, and adding calcium oxide into decyanated slag to obtain trivalent chromium precipitate and insoluble villiaumite; and chloridizing the washed and dried precipitation slag by adopting aluminum chloride, carrying out multi-stage condensation separation and purification on the chloridized flue gas to respectively obtain ferric trichloride and aluminum trichloride, carrying out heat exchange and washing on the chloridized slag to obtain a chromium trichloride solution, and carrying out alkaline leaching to obtain sodium aluminate and tailings. According to the method, oxidation-reduction characteristics of the chromium-containing aluminum mud and the overhaul slag are utilized to cooperate with detoxification, a carbon-based wave-absorbing material in the overhaul slag is subjected to microwave heating for chlorination recovery of valuable elements, the heating rate is high, heating is uniform, the reaction efficiency is high, harmless treatment of the two hazardous wastes is achieved, the valuable elements such as chromium and aluminum in the hazardous wastes are effectively recovered, and the method is suitable for industrial production. And the energy utilization rate is high.

The invention belongs to the technical field of water treatment materials, and particularly relates to a coal gasification slag unfired ceramsite filter material as well as a preparation method and application thereof. The coal gasification slag thermal insulation material comprises the following raw materials in parts by weight: 67.5-95 parts of coal gasification slag, 5-15 parts of active powder, 0-20 parts of metakaolin, 2-8 parts of expanded perlite, 0.1-0.5 part of a foam stabilizer and 1-3 parts of a foaming agent. The unfired ceramsite filter material has the advantages of being reusable, green and environment-friendly in preparation process, low in follow-up treatment cost, capable of being reused after failure and the like.

This invention discloses an artificial aggregate prepared using desulfurization solid waste, its preparation method, and its application, belonging to the field of solid waste resource utilization technology. The preparation method includes the following steps: ball milling desulfurization slag to obtain desulfurization slag powder; low-temperature pyrolysis treatment of waste incineration fly ash to obtain pretreated waste incineration fly ash; mixing desulfurization ash, desulfurization slag powder, and pretreated waste incineration fly ash to obtain a raw material mixture; adding water to the raw material mixture and pelletizing to obtain aggregate particles; subjecting the aggregate particles to air curing and mineralization curing sequentially to obtain the final product. This invention also discloses the artificial aggregate prepared by the above method and its application. The artificial aggregate prepared using desulfurization solid waste of this invention has high compressive strength and stable ion storage, which can solve the problems of low strength and high dependence on admixtures in existing coal ash-based aggregates, and has broad application prospects.

The invention discloses a method for preparing a road base material by using incineration slag and polluted sludge, which comprises the following steps: carrying out wet tempering and chemical modification on the incineration slag to obtain activated incineration slag; treating the solid-phase sludge by using low-temperature plasma to obtain pretreated sludge; uniformly mixing the activated incineration slag and the pretreated sludge to obtain a mixed raw material; adding a mineralizer into the mixed raw material, uniformly mixing, and adding water to obtain a reaction wet material; performing hydrothermal reaction on the reaction wet material to obtain a mineralized material; and uniformly mixing the mineralized material with the water glass solution to obtain the road base material. According to the method, heavy metals in the incineration slag and the polluted sludge are promoted to react with the mineralizing agent under the hydrothermal treatment condition, so that the heavy metals are solidified and stabilized, and the long-term leaching risk of the heavy metals in the roadbed and the mobility of the heavy metals in the environment are effectively reduced. Meanwhile, a thermodynamically stable mineral phase is generated by hydrothermal treatment, so that the strength, durability and compression resistance of the roadbed material are remarkably enhanced.

This utility model discloses a waste treatment device for isothiazolinone production, relating to the field of isothiazolinone production technology. The waste tank is connected to a first filter, the first filter is connected to a settling tank, the settling tank is connected to a distillation tank, the distillation tank is connected to a degradation tank, the degradation tank is connected to a sedimentation tank, the sedimentation tank is connected to a second filter, the second filter is connected to a nanofiltration membrane device, and the nanofiltration membrane device is connected to a treatment water tank. This device can effectively remove harmful substances from the isothiazolinone production waste, achieving harmless treatment of the waste and also realizing resource recycling to a certain extent, thus possessing good environmental and economic benefits.

The invention discloses a wild termitomyces albuminosus tending method, which belongs to the technical field of fungus cultivation, and comprises the following steps: (1) searching a point location where wild termitomyces albuminosus grows or a region where termites for cultivation move in a region where the altitude does not exceed 2500m and the termites for cultivation live, determining a wild termitomyces albuminosus unearthed point within a range of 0.5-3m from the center or a termite cultivation activity area as a tending point; (2) punching a plurality of pits in the tending points according to the soil thickness condition; putting materials which are fond of the termites for cultivation into the pits; and covering the distribution range of the pits with agricultural and forestry wastes, stacking into a food pile, covering, and managing the food pile and the soil around the tending point. The method solves the problems that existing wild termitomyces albuminosus propagation promotion cannot completely cover all habitats of termitomyces albuminosus, water and soil loss is easily caused, inoculation procedures are complex and the like, and water and soil conservation can be promoted while the yield of the wild termitomyces albuminosus is remarkably increased.

The invention belongs to the technical field of composite microbial agents, and particularly relates to a composite microbial agent for liquid dung treatment and a preparation method and application thereof. The compound microbial agent is a mixed microbial agent of streptomyces isothiocyanate (HBU11), aspergillus niger (Aspergillus niger) HBUN19, bacillus subtilis (HBU29) and Hydrogenobacterium bissanensis HBU34, and the compound microbial agent is a mixed microbial agent of bacillus subtilis (HBU19), bacillus subtilis (HBU29), bacillus subtilis (HBU34), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29), bacillus subtilis (HBU29) and bacillus subtilis (HBU34). The compound microbial agent is efficient, non-toxic and biodegradable, and can effectively degrade organic matters in the liquid dung and remarkably reduce the content of pollutants such as ammonia nitrogen and total phosphorus in the liquid dung through compound use of various efficient strains, so that harmless treatment of the liquid dung is realized.

The utility model relates to the technical field of sewage treatment, and provides an unpowered sewage treatment tank which comprises a left treatment tank and a right treatment tank, the left treatment tank and the right treatment tank are in sealed communication through a connecting cylinder, and the left treatment tank and the right treatment tank are each provided with a liquid inlet and a reserved punching position capable of punching multiple positions. The upper end of the left treatment tank and the upper end of the right treatment tank are provided with observation openings, sealing covers are detachably installed at the observation openings, a middle filter cylinder is installed on the inner wall of the connecting cylinder in a sliding mode, an annular supporting frame is arranged on the middle filter cylinder, and the annular supporting frame is placed at the upper end of the connecting cylinder. The device is simple in structure, convenient to use, suitable for being used in different scenes, small in occupied space and capable of achieving harmless treatment of toilet excrement and domestic sewage synchronously, excrement can be taken out conveniently through the middle filter cylinder, the treated sewage can be used for irrigation of vegetables and crops, and reasonable utilization of resources is achieved.

The application discloses a centrifugal extraction method of noble metals in waste circuit boards, and relates to the technical field of metal resource recovery.The application modifies pretreated inorganic porous materials by using a silane coupling agent containing a mercapto group to obtain modified inorganic porous materials, and then the modified inorganic porous materials are put into waste circuit board leaching liquor to produce adsorption and coordination combination with noble metal ions in the waste circuit board leaching liquor, and then the noble metals are efficiently recovered through centrifugation and extraction and the like.The method is simple, efficient, energy-saving and environment-friendly, and can realize resourceization and harmless treatment of waste circuit boards.

The application discloses a kind of efficient environmental protection lithium ion battery recycling process, it is related to lithium battery recycling processing technical field, including the following steps: (1) after shelling lithium battery is mixed with dry ice, under inert gas, after centrifugation, electrolyte is obtained;(2) in electrolyte is placed in airtight container, after adding hydroxypropyl methyl cellulose and stirring uniformly, then adding sodium alginate solution, guar gum is stirred uniformly, heating and keeping warm to obtain electrolyte gel, subsequently electrolyte gel is placed in liquid nitrogen and frozen;(3) in frozen electrolyte gel, add calcium chloride solution, after standing, reduce pressure heating, after keeping warm and stirring, gel precipitate is obtained;(4) gel precipitate is mixed with water and dispersed, filter, in filtrate, add sodium carbonate, after stirring uniformly, filter, obtain treated electrolyte, the electrolyte in lithium battery is recycled, reduce the emission of toxic gas or toxic substance in recycling process, realize harmless treatment.

This utility model relates to the field of biomass baking technology, specifically disclosing a biomass baking device, including a base plate and a baking tank. A flat plate is fixedly connected to the outer wall of the baking tank above the base plate. A high-efficiency exhaust gas treatment mechanism is provided above the base plate. The high-efficiency exhaust gas treatment mechanism includes a heat-conducting bend connected to the upper end of the baking tank. A condenser sleeve is provided on the outer wall of the heat-conducting bend. The lower and upper sides of the outer wall of the condenser sleeve are respectively connected to an inlet pipe and an outlet pipe. After cooling, the exhaust gas enters the filter box through a horizontal pipe to complete gas-solid separation. Then, it is pressurized by a gas pump and injected into an acid gas treatment box. The acid gas is neutralized by NaOH solution, thereby achieving the effect of deacidification of the exhaust gas. The exhaust gas is heated to the catalytic reaction temperature by a heating tube and an oxygen supply tube. At the same time, oxygen is injected into the oxygen supply tube, which promotes the oxidation of CO in the exhaust gas to CO and the decomposition of VOCs into CO and H2O, thereby facilitating the decomposition of organic matter such as CO and VOCs and achieving the complete harmless treatment of organic matter.

The invention relates to a static sintering process and system for preparing high-whiteness and high-purity aluminum hydroxide, and the static sintering process comprises the following steps: firstly, taking a raw material crushed to process control fineness as a pre-powder material, carrying out raw material preparation and blank forming on the pre-powder material to obtain a blank, sintering the blank to obtain clinker, carrying out clinker dissolution on the clinker to obtain slurry, and sintering the slurry to obtain the high-whiteness and high-purity aluminum hydroxide. Carrying out slurry desilication, carbon component reaction, hydrogen-aluminum separation and drying on the slurry to prepare high-whiteness and high-purity aluminum hydroxide; wherein the raw materials comprise solid wastes such as fly ash; the blanks are sintered into six polygon prism-shaped blanks which are stacked in two rows and three groups, the blanks are roasted in an industrial tunnel kiln in a temperature programming mode, and the roasting temperature ranges from 800 DEG C to 1100 DEG C. According to the invention, solid wastes such as fly ash, coal gangue, carbide slag and the like, pulverized coal and sodium carbonate are crushed into materials with the same fineness, high-whiteness and high-purity aluminum hydroxide can be obtained through an alkaline static sintering process, the recovery rate of aluminum in the solid wastes is about 90%, and harmless, resource and synergistic utilization of the solid wastes such as fly ash and the like is realized.

The invention relates to a raw material preparation method for preparing high-whiteness and high-purity aluminum hydroxide by using solid waste, which comprises the following steps: pretreating, proportioning and homogenizing raw materials to obtain a homogenized raw material, and the raw materials comprise fly ash, coal gangue, pulverized coal, calcium-containing solid waste and sodium carbonate; wherein the pretreatment comprises the following steps: crushing the raw materials, and controlling the crushing granularity of the process to be 120-220 meshes to form pre-powder; the batching comprises the steps of metering the pre-powder according to a process ratio, and batching to form a raw material; the homogenization comprises high-speed dry homogenization and low-speed wet homogenization, the raw material is firstly added into a high-speed dry homogenization machine for high-speed dry homogenization, and then the raw material is subjected to low-speed wet homogenization to obtain a homogenized raw material. According to the invention, solid wastes such as fly ash, coal gangue, carbide slag and the like, pulverized coal and sodium carbonate are crushed, a fully and uniformly mixed homogenized raw material is obtained through microcomputer metering automatic batching accurate control, dry homogenization and wet homogenization treatment, high-whiteness and high-purity aluminum hydroxide can be prepared through a self-heating blank sintering method, and resource utilization of fly ash is realized.

This invention relates to a novel phosphorus-fluorine curing agent for phosphogypsum and its preparation method, belonging to the technical field of industrial solid waste treatment and resource utilization. The curing agent of this invention comprises slag powder, anhydrous sodium sulfate, water glass, water, sodium hydroxide, and a Fe3O4@SiO2@Zr-Al bimetallic oxide stabilizer. The Fe3O4@SiO2@Zr-Al bimetallic oxide stabilizer has a core-shell structure, with magnetic iron oxide particles as the core, and an amorphous silica protective layer and an active layer sequentially coating the surface of the magnetic iron oxide particles. The active layer is an amorphous, porous network structure of zirconium-aluminum bimetallic oxide. The preparation method of the curing agent of this invention is simple, mild, and easy to industrialize. The main raw material is industrial solid waste slag, achieving "waste treatment with waste," with a small amount of agent added and low overall treatment cost.

The utility model discloses a kind of biomass combustion heat-conducting oil boiler of high-temperature pyrolysis waste gas, including heat exchange chamber, combustion chamber, gas cracking device, heat-conducting oil coil, fuel conveying device;Heat exchange chamber is fixedly connected above combustion chamber, and heat exchange chamber top is equipped with smoke outlet II, bottom inlet port;Heat-conducting oil coil is set in heat exchange chamber inside, gas cracking device is connected with heat exchange chamber two sides by passing between heat-conducting oil coil;Fuel conveying device is fixed in heat exchange chamber one side by support support, and fuel conveying device bottom is fixedly connected with inlet port.The utility model mixes mixed gas formed after oil refining evaporation waste gas and flue gas of boiler combustion by gas cracking device and is transported to heat-conducting oil boiler to carry out high-temperature pyrolysis, effectively solve the environmental protection and peculiar smell problem in oil refining process, and the heat of mixed cracking gas after high-temperature pyrolysis can also be released and waste heat is recycled.

The application discloses a system for utilizing all components of humus soil, which comprises the following steps: performing hydraulic screening, drying and calcination treatment on humus soil to obtain ecological active soil, and the 28d activity index of the ecological active soil is above 85%. Through efficient heat transfer in the system, mutual influence and mutual restriction between parameters, a synergistic coupling whole is formed, and a full-component quality enrichment utilization-uniform rapid heat activation system is constructed. The material flow and energy flow of the whole process system are highly synergistically coupled, the preparation cost is reduced, and harmless treatment of the humus soil and materialization and energy utilization of all components are realized.

A low-cost concentration and stepwise extraction and utilization process for valuable components of coal mine water is disclosed. This process employs pretreatment of mine water using drift flotation and flocculation sedimentation to remove impurities. Through oblique light correction to enhance solar radiation energy, film overflow heating of the mine water, flash distillation of hot mine water, and condensation collection, the mine water is concentrated at low cost within a solar distillation device. Metal and heavy metal components are extracted from the mine water through solid-phase and liquid-phase chemical conversions and utilized as resources. Highly toxic chromium and radioactive uranium are captured from the mine water using an adsorption + reduction method. Arsenic compounds are adsorbed using a loaded fluoride ion adsorbent. This process achieves low-energy consumption, resource recovery, and harmlessness in mine water treatment, enabling clean and circular utilization of the mine water. It represents a technology for fundamentally controlling mine wastewater pollution.

The invention provides a preparation method of iron coke for a blast furnace, which comprises the following steps: S1) crushing a coal sample with fluidity within 10000 ddpm, and humidifying to obtain a basic coal sample; s2) mixing the basic coal sample with an iron-based material to obtain a mixed coal sample; and S3) mixing the mixed coal sample and the inferior oil, and coking to obtain the iron coke for the blast furnace. The invention further provides the iron coke for the blast furnace. According to the iron coke for the blast furnace and the preparation method of the iron coke, the iron coke is prepared by mixing the basic coal sample, the iron-based material and the inferior oil, the quality of colloid in the coal coking process is improved, the quality of the iron coke is improved, and harmless treatment and recycling of inferior oil waste are achieved.

This utility model discloses an automatic oil sprayer oil mist recovery and environmental protection device, relating to the field of industrial environmental protection equipment. It includes a recovery hood fixed to a movable frame, multiple spray rods inside the hood, a filter assembly mounted on the movable frame, a recovery pipe positioned between the recovery hood and the filter assembly, an exhaust pipe connected to the filter assembly, and an exhaust fan connected to the exhaust pipe. This automatic oil sprayer oil mist recovery and environmental protection device can collect oil mist during the production process and filter it to achieve harmless treatment of the oil mist, preventing it from threatening the health of operators and polluting the environment.