CN216175281U - A processing apparatus for waste incineration flying dust utilization as a resource - Google Patents
A processing apparatus for waste incineration flying dust utilization as a resource Download PDFInfo
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Abstract
The utility model belongs to the technical field of resource utilization of hazardous wastes, and particularly relates to a disposal device for resource utilization of waste incineration fly ash. The method comprises the following steps: a first ash bin; the solid-phase catalytic low-temperature pyrolysis system is used for removing dioxin organic compounds and generating detoxified fly ash; a second ash bin; the multi-stage countercurrent rinsing system is used for removing soluble chlorine salt and trace heavy metals in the detoxified fly ash and generating a muddy water mixture; the solid-liquid separation system is used for conveying the muddy water mixture and carrying out solid-liquid separation treatment to generate liquid-phase filtrate and solid-phase detoxified fly ash; a water treatment system for producing reclaimed water; and a third ash bin. The utility model has the characteristics that the secondary pollution can be reduced, and dioxin organic compounds, trace heavy metals and soluble chloride in the fly ash can be removed, so that the detoxified fly ash can be used as building material resources.
Description
Technical Field
The utility model belongs to the technical field of resource utilization of hazardous wastes, and particularly relates to a disposal device for resource utilization of waste incineration fly ash.
Background
The fly ash (fly ash for short) from domestic garbage incineration is prepared from fly ash obtained from flue gas collection system of garbage incineration power plant, and comprises fluidized bed fly ash and grate furnace fly ash, wherein the fly ash contains CaO and SiO as main components2、Na2O、K2O、Fe2O3、Al2O3The mass fraction of CaO is 20.4-37.9%, the main hazardous substances are heavy metals (Zn, Pb, Cu, Cr, Cd, Ni, Hg and the like) and dioxin organic compounds, the mass fraction of chlorine in the incineration fly ash is the highest and can exceed 25%, and the proportion of soluble chlorine in the total chlorine is 40.6-83.9%. The hazardous waste contains dioxin organic substances and trace inorganic heavy metal substances which are strong carcinogens, and is listed as HW18 hazardous waste. At present, fly ash disposal methods mainly include chelating landfill, rigid landfill, cement kiln cooperative disposal and the like.
However, the chelating landfill occupies a large amount of land resources, the stability of heavy metals is poor, the control on dioxin is limited, and the chlorine content of the chlorine entering the flexible landfill is required to be less than 10%. The rigid landfill method has better control on heavy metals and dioxin, but has higher cost and occupies a large amount of land resources, and becomes a main factor for restricting the treatment of the fly ash by the method. The fly ash which is cooperatively treated by the cement kiln must be added to a high-temperature section, and the addition of a raw material mill requires that dioxin is less than 10ngTEQ/kg, so that certain influence is exerted on the production stability of cement.
The fly ash contains CaO and SiO as main components2And contains a small amount ofThe dioxin organic compounds, heavy metals and the like are used, so in order to protect the environment and reduce the possible secondary pollution of the existing fly ash disposal method, the dioxin organic compounds, trace heavy metals and soluble chlorine salt in the fly ash are removed, the fly ash after detoxification can be used as building material resources, and a disposal device for resource utilization of the waste incineration fly ash is designed, so that the fly ash after detoxification of the final product is used as building material raw materials such as baking-free bricks or cement admixtures, and the like, which is very necessary.
For example, chinese patent application No. CN202010231697.9 discloses a stabilizing treatment process for fly ash from waste incineration, which comprises the following steps: preparing plant straw fermentation liquor and oxidized plant fibers; step two, microbial treatment; step three, preparing the stabilizing material. Although the product obtained by adopting a specific straw fermentation process is provided for stabilizing the waste incineration fly ash, the construction material with various performances meeting the requirements is finally prepared by degrading dioxin and immobilized heavy metals through microbial treatment and promoting fly ash gelatinization, the prepared waste incineration fly ash stabilizing material does not cause secondary pollution, because the normal temperature curing resin is added in a certain proportion, the obtained stabilizing material has jade texture, has the characteristics of light weight, good finish, high strength and durability, can be cut, ground and the like, is widely applicable to the fields of building, heat preservation, decoration, gardening and the like, but has the disadvantages that the whole treatment process is higher in cost due to the need of adopting microorganism treatment in the treatment process, and the treatment process is uncontrollable, so that the finally prepared building materials with various performances meeting the requirements have uneven quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the existing fly ash treatment process has large occupied area, high treatment cost, poor control stability of heavy metals and dioxin organic compounds and secondary pollution risk in the prior art, and provides a treatment device for resource utilization of waste incineration fly ash, which can reduce secondary pollution in the existing fly ash treatment method, remove dioxin organic compounds, trace heavy metals and soluble chlorine salt in the fly ash and enable the detoxified fly ash to be used as building material resources.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
a processing apparatus for waste incineration fly ash resource utilization includes:
the first ash bin is used for storing raw material fly ash;
the solid-phase catalytic low-temperature pyrolysis system is used for removing dioxin organic compounds and generating detoxified fly ash;
the second ash bin is used for storing detoxified fly ash;
the multi-stage countercurrent rinsing system is used for removing soluble chlorine salt and trace heavy metals in the detoxified fly ash and generating a muddy water mixture;
the solid-liquid separation system is used for conveying the muddy water mixture and carrying out solid-liquid separation treatment to generate liquid-phase filtrate and solid-phase detoxified fly ash;
a water treatment system for producing reclaimed water for use as rinse water in a multi-stage counter-current rinse process;
and the third ash bin is used for storing the fly ash after solid-phase detoxification.
Preferably, the raw material fly ash enters a first ash bin through a pneumatic conveying system; the first ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
Preferably, a second conveying system is adopted in the raw material fly ash conveying process, and the second conveying system is one of a pipe chain conveying system, a pneumatic conveying system and a scraper conveying system; the steel material of the second conveying system adopts Q235 or SUS 316L.
Preferably, the pyrolysis temperature in the solid-phase catalytic low-temperature pyrolysis system is 250-400 ℃; the inside of the solid-phase catalytic low-temperature pyrolysis system is in an anaerobic atmosphere and the pyrolysis time is 1-3 h.
Preferably, a third conveying system is adopted in the detoxified fly ash conveying process, and the third conveying system is one of a pipe chain conveying system, a pneumatic conveying system and a scraper conveying system; the steel material of the third conveying system adopts Q235 or SUS 316L; the second ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
Preferably, a fourth conveying system is adopted in the detoxified fly ash conveying process, and the fourth conveying system is a screw conveyor or a scraper conveyor; the steel material of the fourth conveying system adopts Q235 or SUS 316L; the multistage countercurrent rinsing system adopts three-stage rinsing, the multistage countercurrent rinsing system adopts a rinsing barrel, and the rinsing barrel is made of anticorrosive Q235 or 2205 double-phase stainless steel as an inner lining.
Preferably, a fifth conveying system is adopted in the sludge-water mixture conveying process, and the fifth conveying system is a screw sludge pump or a sludge diaphragm pump; the solid-liquid separation system is a horizontal centrifuge or a plate-and-frame filter press; the fifth conveying system is connected with the solid-liquid separation system through a pipeline, and the pipeline is made of anticorrosive Q235 or 2205 double-phase stainless steel with a lining.
Preferably, a sixth conveying system is adopted in the liquid-phase filtrate conveying process, and a filtrate self-flowing pipeline or a conveying pump connecting pipeline is adopted in the sixth conveying system; the material of the pipeline of the sixth conveying system is one of PVC, an anti-corrosion lining Q235 and SUS 316L; the water treatment system adopts a sodium sulfide chemical precipitation method to remove heavy metals, a sodium carbonate chemical precipitation method to remove calcium and magnesium ions, and high-chloride wastewater is treated by an evaporative crystallization method, and finally obtained evaporative crystallization condensate water is the reclaimed water.
Preferably, a seventh conveying system is adopted in the middle water conveying process, and a conveying pump is adopted in the seventh conveying system to connect pipelines; the seventh conveying system is made of an anti-corrosion lining layer Q235 or SUS 316L.
Preferably, an eighth conveying system is adopted in the conveying process of the fly ash after solid phase detoxification, and the eighth conveying system adopts one or two of a scraper conveyor and a screw conveyor; the blade material of the spiral conveyor is manganese steel, and the scraper conveyor is SUS 316L; the third ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
Compared with the prior art, the utility model has the beneficial effects that: (1) the utility model can carry out solid-phase catalytic low-temperature pyrolysis on the raw material fly ash, has lower comprehensive energy consumption and saves energy; (2) the method can ensure that the dioxin removal efficiency can reach more than 99 percent to the maximum extent, the content of dioxin in the fly ash is stably less than 30ngTEQ/kg and is lower than the standard limit value by more than 40 percent by referring to the detection of similar domestic engineering operation, and the leaching of soluble chlorine and heavy metal in the treated fly ash is lower than the standard limit value, so that the method is safe and reliable; (3) the utility model can realize zero discharge of waste water and ultra-clean discharge of waste gas in project production engineering, realizes the utilization of fly ash building materials after detoxification, realizes near-zero landfill of solid waste, and has low project environmental protection risk and high resource recovery efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a disposal device for resource utilization of waste incineration fly ash according to the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
Example 1:
the disposal device for resource utilization of waste incineration fly ash as shown in fig. 1 comprises the following steps:
the first ash bin is used for storing raw material fly ash;
the solid-phase catalytic low-temperature pyrolysis system is used for removing dioxin organic compounds and generating detoxified fly ash;
the second ash bin is used for storing detoxified fly ash;
the multi-stage countercurrent rinsing system is used for removing soluble chlorine salt and trace heavy metals in the detoxified fly ash and generating a muddy water mixture;
the solid-liquid separation system is used for conveying the muddy water mixture and carrying out solid-liquid separation treatment to generate liquid-phase filtrate and solid-phase detoxified fly ash;
a water treatment system for producing reclaimed water for use as rinse water in a multi-stage counter-current rinse process;
and the third ash bin is used for storing the fly ash after solid-phase detoxification.
The utility model relates to a disposal device for resource utilization of waste incineration fly ash, which is realized by a resource utilization treatment system of waste incineration fly ash. The waste incineration fly ash resource utilization and treatment system comprises a first ash bin, a solid-phase catalytic low-temperature pyrolysis system, a second ash bin, a multi-stage countercurrent rinsing system, a solid-liquid separation system, a water treatment system and a third ash bin which are connected in sequence; the first ash bin is used for collecting raw material fly ash conveyed by the tank truck; the solid-phase catalytic low-temperature pyrolysis system is used for removing dioxin organic compounds in the fly ash; the second ash bin is used for storing detoxified fly ash after low-temperature pyrolysis; the multi-stage countercurrent rinsing system is used for removing soluble chlorine salt and heavy metal in the detoxified fly ash; the solid-liquid separation system is used for carrying out solid-liquid separation on the mud-water mixture of the multi-stage countercurrent rinsing system to obtain solid-phase detoxified fly ash and liquid-phase filtrate; the water treatment system is used for removing heavy metals and calcium and magnesium ions in the liquid-phase filtrate; the third ash bin is used for storing the fly ash after solid phase detoxification.
Further, the raw material fly ash enters a first ash bin through a pneumatic conveying system; the first ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
Raw material fly ash in the tank car enters the first ash bin through pipeline pneumatic conveying, and the part of the pipeline in direct contact with the raw material fly ash needs to have corrosion resistance. Wherein, the water content of the raw material fly ash is 1-5%, and the content of soluble chlorine is 10-30%. The volume of the first ash bin can meet the ash storage capacity of a garbage incineration fly ash resource utilization treatment system which stably and continuously operates for 15 days. The first ash bin is in the shape of a flat bottom bin or a conical bottom bin.
Furthermore, a second conveying system is adopted in the raw material fly ash conveying process, and the second conveying system is one of a pipe chain conveying system, a pneumatic conveying system and a scraper conveying system; the steel material of the second conveying system adopts Q235 or SUS 316L.
The outlet of the first ash bin and the inlet of the solid-phase catalytic low-temperature pyrolysis system are conveyed to the feed inlet of the solid-phase catalytic low-temperature pyrolysis system through a pipe chain, and the material of the part of the pipeline and the pump in direct contact with the raw material fly ash needs to have corrosion resistance. In addition, the solid-phase catalytic low-temperature pyrolysis process has the pyrolysis temperature of 350 ℃, the oxygen-free atmosphere and the pyrolysis time of 1 h. Finally, the moisture content of the detoxified fly ash obtained was < 1%, and the total amount of dioxin-like residues was less than 30ng-TEQ/kg (based on dry weight of fly ash).
Furthermore, a third conveying system is adopted in the detoxication fly ash conveying process, and the third conveying system is one of a pipe chain conveying system, a pneumatic conveying system and a scraper conveying system; the steel material of the third conveying system adopts Q235 or SUS 316L; the second ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
The volume of the second ash bin can meet the ash storage capacity of the garbage incineration fly ash resource utilization treatment system which stably and continuously operates for 7 days. The second ash bin is also in the shape of a flat bottom bin or a conical bottom bin.
Further, a fourth conveying system is adopted in the conveying process of the detoxified fly ash, and the fourth conveying system is a screw conveyor or a scraper conveyor; the steel material of the fourth conveying system adopts Q235 or SUS 316L; the multistage countercurrent rinsing is three-stage rinsing, a rinsing barrel is adopted in a multistage countercurrent rinsing system, and the rinsing barrel is made of anticorrosive Q235 or 2205 double-phase stainless steel as an inner lining. The detoxication flying ash produced by the discharge port of the second ash bin is connected with the feed port of the multi-stage countercurrent rinsing system. When the fourth conveying system adopts a screw conveyor, the blades of the screw conveyor are made of manganese steel.
Further, a fifth conveying system is adopted in the sludge-water mixture conveying process, and the fifth conveying system is a screw sludge pump; a solid-liquid separation system is adopted in the solid-liquid separation treatment process, and the solid-liquid separation system is a plate-and-frame filter press; the fifth conveying system is connected with the solid-liquid separation system through a pipeline, and the pipeline is made of anticorrosive Q235 or 2205 double-phase stainless steel with a lining. The discharge port of the multi-stage countercurrent rinsing system is connected with the feed port of the plate and frame filter press system through a screw sludge pump connecting pipeline, and the plate and frame filter press system realizes automation through a PLC system. The screw sludge pump can be replaced by a sludge diaphragm pump, and the plate-and-frame filter press can be a horizontal centrifuge.
Wherein the mass ratio of the obtained liquid phase filtrate to the raw material fly ash is 2:1-3: 1. The water content of the obtained solid-phase detoxified fly ash is 28-35%. The soluble chlorine content of the fly ash after solid phase detoxification is less than 1 percent. The leaching concentration of the heavy metals in the fly ash after solid phase detoxification does not exceed the maximum allowable emission concentration limit value specified in GB 8978, and the maximum emission concentration of the second type pollutants does not exceed the first-class standard. Obviously, the leaching of the soluble chlorine and the heavy metal of the fly ash after the treatment by the treatment device is lower than the standard limit value, and the treatment device is safe and reliable.
Further, a sixth conveying system is adopted in the liquid-phase filtrate conveying process, and a filtrate self-flowing pipeline is adopted in the sixth conveying system; the pipeline of the sixth conveying system is made of PVC; the water treatment system adopts a sodium sulfide chemical precipitation method to remove heavy metals, a sodium carbonate chemical precipitation method to remove calcium and magnesium ions, and high-chloride wastewater is treated by an evaporative crystallization method, and finally obtained evaporative crystallization condensate water is the reclaimed water.
The filter liquor discharge port of the plate-and-frame filter press automatically flows to a water treatment system through a PVC pipeline, and the water treatment system can realize automatic control through online monitoring of liquid level, pH, alkalinity and hardness. The filtrate self-flowing pipeline can be replaced by a pipeline connected with a delivery pump, and the PVC pipeline can be replaced by an anticorrosive lining Q235 or SUS 316L.
Furthermore, a seventh conveying system is adopted in the middle water conveying process, and the seventh conveying system is connected with a pipeline through a conveying pump; the seventh conveying system is made of an anti-corrosion lining layer Q235 or SUS 316L. The reclaimed water obtained after water treatment is recycled and used as rinsing water in the multi-stage countercurrent rinsing process, so that the method is economical and environment-friendly.
Further, an eighth conveying system is adopted in the conveying process of the solid-phase detoxified fly ash, and the eighth conveying system adopts one or two of a scraper conveyor and a screw conveyor; the blade material of the spiral conveyor is manganese steel, and the scraper conveyor is SUS 316L; the third ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
Specifically, a discharge port of the plate-and-frame filter press is connected with a feed port of a third ash bin through a shaftless screw conveyor, blades of the screw conveyor are made of manganese steel, and fly ash in the third ash bin after solid-phase detoxification can be used for manufacturing baking-free bricks and cement admixture raw materials. The volume of the third ash bin can meet the ash storage capacity of the garbage incineration fly ash resource utilization treatment system which stably and continuously operates for 15 days. The third ash bin is also in the shape of a flat bottom bin or a conical bottom bin.
According to the utility model, through the steps of raw material fly ash collection, solid-phase catalytic low-temperature pyrolysis, multi-stage countercurrent rinsing, solid-liquid separation and water treatment, the content of soluble chlorine in the formed solid-phase detoxified fly ash is less than 1%, the leaching concentration of heavy metals is not more than the maximum allowable emission concentration limit value specified in GB 8978, the maximum emission concentration of second pollutants is not more than the first-class standard, and the total amount of dioxin residues is less than 30ng-TEQ/kg (based on the dry weight of the fly ash). The fly ash after solid phase detoxification meets the relevant requirements of fly ash water washing products used for other purposes besides cement clinker production in technical specifications (trial) of pollution control of fly ash from incineration of domestic garbage (HJ 1134-2020).
The utility model can carry out solid-phase catalytic low-temperature pyrolysis on the raw material fly ash, has lower comprehensive energy consumption and saves energy; the method can ensure that the dioxin removal efficiency can reach more than 99 percent to the maximum extent, the content of dioxin in the fly ash is stably less than 30ngTEQ/kg and is lower than the standard limit value by more than 40 percent by referring to the detection of similar domestic engineering operation, and the leaching of soluble chlorine and heavy metal in the treated fly ash is lower than the standard limit value, so that the method is safe and reliable; the utility model can realize zero discharge of waste water and ultra-clean discharge of waste gas in project production engineering, realizes the utilization of fly ash building materials after detoxification, realizes near-zero landfill of solid waste, and has low project environmental protection risk and high resource recovery efficiency.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (10)
1. A processing apparatus for waste incineration fly ash resource utilization, its characterized in that includes:
the first ash bin is used for storing raw material fly ash;
the solid-phase catalytic low-temperature pyrolysis system is used for removing dioxin organic compounds and generating detoxified fly ash;
the second ash bin is used for storing detoxified fly ash;
the multi-stage countercurrent rinsing system is used for removing soluble chlorine salt and trace heavy metals in the detoxified fly ash and generating a muddy water mixture;
the solid-liquid separation system is used for conveying the muddy water mixture and carrying out solid-liquid separation treatment to generate liquid-phase filtrate and solid-phase detoxified fly ash;
a water treatment system for producing reclaimed water for use as rinse water in a multi-stage counter-current rinse process;
and the third ash bin is used for storing the fly ash after solid-phase detoxification.
2. The disposal device for resource utilization of fly ash from waste incineration as claimed in claim 1, wherein the raw fly ash enters the first ash bin through a pneumatic conveying system; the first ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
3. The treatment device for resource utilization of waste incineration fly ash according to claim 1, wherein a second conveying system is adopted in the raw material fly ash conveying process, and the second conveying system is one of a pipe chain conveying system, a pneumatic conveying system and a scraper conveying system; the steel material of the second conveying system adopts Q235 or SUS 316L.
4. The disposal device for resource utilization of waste incineration fly ash according to claim 1 or 3, wherein the pyrolysis temperature in the solid phase catalytic low temperature pyrolysis system is 250-400 ℃; the inside of the solid-phase catalytic low-temperature pyrolysis system is in an anaerobic atmosphere and the pyrolysis time is 1-3 h.
5. The disposal device for resource utilization of fly ash from waste incineration according to claim 1, wherein a third conveying system is adopted in the transportation process of the detoxified fly ash, and the third conveying system is one of a pipe chain conveying system, a pneumatic conveying system and a scraper conveying system; the steel material of the third conveying system adopts Q235 or SUS 316L; the second ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
6. The disposal device for resource utilization of waste incineration fly ash according to claim 1, wherein a fourth conveying system is adopted in the detoxification fly ash conveying process, and the fourth conveying system is a screw conveyor or a scraper conveyor; the steel material of the fourth conveying system adopts Q235 or SUS 316L; the multistage countercurrent rinsing system adopts three-stage rinsing, the multistage countercurrent rinsing system adopts a rinsing barrel, and the rinsing barrel is made of anticorrosive Q235 or 2205 double-phase stainless steel as an inner lining.
7. The disposal device for resource utilization of waste incineration fly ash according to claim 1, wherein a fifth conveying system is adopted in the sludge-water mixture conveying process, and the fifth conveying system is a screw sludge pump or a sludge diaphragm pump; the solid-liquid separation system is a horizontal centrifuge or a plate-and-frame filter press; the fifth conveying system is connected with the solid-liquid separation system through a pipeline, and the pipeline is made of anticorrosive Q235 or 2205 double-phase stainless steel with a lining.
8. The treatment device for resource utilization of waste incineration fly ash according to claim 1, wherein a sixth conveying system is adopted in the liquid-phase filtrate conveying process, and the sixth conveying system adopts a filtrate self-flowing pipeline or a conveying pump connecting pipeline; the material of the pipeline of the sixth conveying system is one of PVC, an anti-corrosion lining Q235 and SUS 316L; the water treatment system adopts a sodium sulfide chemical precipitation method to remove heavy metals, a sodium carbonate chemical precipitation method to remove calcium and magnesium ions, and high-chloride wastewater is treated by an evaporative crystallization method, and finally obtained evaporative crystallization condensate water is the reclaimed water.
9. The treatment device for resource utilization of waste incineration fly ash according to claim 1, wherein a seventh conveying system is adopted in the middle water conveying process, and the seventh conveying system adopts a conveying pump to connect a pipeline; the seventh conveying system is made of an anti-corrosion lining layer Q235 or SUS 316L.
10. The disposal device for resource utilization of waste incineration fly ash according to claim 1, wherein an eighth conveying system is adopted in the solid-phase detoxified fly ash conveying process, and the eighth conveying system adopts one or two of a scraper conveyor and a screw conveyor; the blade material of the spiral conveyor is manganese steel, and the scraper conveyor is SUS 316L; the third ash bin adopts one of a steel bin, a plate rolling bin and a concrete bin; wherein, the steel material of the steel silo and the plate rolling silo adopts Q235 or Q245.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926826A (en) * | 2021-10-09 | 2022-01-14 | 浙江京兰环保科技有限公司 | Treatment process for resource utilization of waste incineration fly ash |
| CN115475821A (en) * | 2022-09-23 | 2022-12-16 | 重庆三峰环境集团股份有限公司 | Method for curing heavy metal in cooperation with flue gas purification by waste incineration fly ash |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926826A (en) * | 2021-10-09 | 2022-01-14 | 浙江京兰环保科技有限公司 | Treatment process for resource utilization of waste incineration fly ash |
| CN115475821A (en) * | 2022-09-23 | 2022-12-16 | 重庆三峰环境集团股份有限公司 | Method for curing heavy metal in cooperation with flue gas purification by waste incineration fly ash |
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