CN113231451B - Continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment system and process - Google Patents
Continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment system and process Download PDFInfo
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- 239000010881 fly ash Substances 0.000 claims abstract description 38
- 238000003756 stirring Methods 0.000 claims abstract description 38
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
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- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 26
- 239000000149 chemical water pollutant Substances 0.000 claims abstract description 20
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
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- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of environmental protection and resource comprehensive utilization, and provides a continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment system and process, wherein the process comprises the following steps: stirring and mixing the landfill leachate and the incineration fly ash according to a set liquid-solid ratio to obtain a uniformly mixed material; carrying out high-temperature high-pressure heating oxidation treatment on the uniformly mixed material under oxygen to obtain gaseous material discharge and solid-liquid mixed material discharge; and carrying out precipitation collection on the solid-liquid mixed state discharge, and carrying out gas-solid separation, cooling and gas-liquid separation on the gaseous discharge in sequence and carrying out corresponding product classification collection. The system comprises a stirring container, a reaction unit, a gas-solid separator, a cooler, a gas-liquid separator and a gas storage tank, wherein the stirring container is used for stirring and mixing garbage percolate and incineration fly ash, the reaction unit is respectively connected with the stirring container, the gas-solid separator and the gas storage tank, and the cooler, the gas-liquid separator and the gas-liquid separator are sequentially connected behind the gas-solid separator. The process and the system can cooperatively treat garbage percolate and incineration fly ash.
Description
Technical Field
The invention belongs to the technical field of environmental protection and recycling comprehensive utilization, and particularly relates to a continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment system and process, which realize co-treatment of landfill leachate and incineration fly ash and are also suitable for continuous co-treatment of waste liquid with high organic matter content and solid waste containing heavy metals and dioxins.
Background
The garbage incineration power generation technology can realize reduction, reclamation and harmless treatment of household garbage, and the treatment process and technology thereof are mature day by day after 100 years of development, and become the main method for global garbage treatment. However, innocent treatment and disposal of landfill leachate and incineration fly ash generated in the process of generating electricity by waste incineration are common and bottleneck problems restricting industry development.
The landfill leachate is high-concentration organic wastewater with complex components, has strong malodor, and has the characteristics of high COD, high ammonia nitrogen and heavy metal content, complex water quality, large change, large hazard and the like, and needs to be subjected to advanced treatment, otherwise, serious pollution is caused to the environment. The leachate treatment process and treatment method commonly used in the garbage incineration industry can generate about 15% -30% of concentrated solution, and the concentrated solution is mainly treated by adopting a method of spraying back to the incinerator, so that the heat energy utilization efficiency of the incinerator is reduced, the yield of polluted gas is increased, and meanwhile, the incinerator body is corroded, and the service life of the incinerator is seriously influenced.
The waste incineration fly ash is mainly residue collected in a waste incineration flue gas purification system, and accounts for about 2% -5% of the total amount of the waste incineration ash. The incineration fly ash contains a large amount of soluble heavy metals and dioxin, belongs to dangerous wastes, and is easy to cause secondary pollution to the environment if the incineration fly ash is not properly treated. At present, the waste incineration fly ash is mainly subjected to solidification/stabilization treatment and then is buried, so that the treatment cost is low, however, the solidification landfill can not realize the recycling utilization of the fly ash, and meanwhile, the volume reduction and the decrement rate are low, so that the waste incineration fly ash occupies the storage capacity of an urban landfill. Therefore, dioxin in the incineration fly ash is thoroughly removed, soluble heavy metal in the incineration fly ash is stably solidified, and harmless treatment and resource utilization of the incineration fly ash are imperative.
Through researches, the density, dielectric constant and the like of water can be obviously changed under the conditions of high temperature and high pressure (300-400 ℃ and 8-23 Mpa), the water becomes a nonpolar solvent, the solubility of organic matters and oxygen in the water is greatly increased, even the organic matters and the oxygen are completely mixed to form a uniform phase, the oxidant can undergo a strong oxidation reaction with the organic matters, thereby the organic matters can be rapidly degraded into harmless inorganic matters, and hydrocarbon is oxidized into CO 2 And H 2 O, nitrogen element is oxidized to N 2 Sulfur, halogen, etc., precipitate out inorganic salts that generate acid radical ions. Compared with the traditional treatment process, the high-temperature high-pressure water oxidation treatment technology is in subcritical and supercritical states of water, and has the characteristics of thorough treatment, short reaction time, no secondary pollution, high controllability and the like.
Therefore, the supercritical (subcritical) water oxidation technology is applied to the waste incineration industry, and the synergistic treatment of the landfill leachate and the incineration fly ash has remarkable environmental protection benefit. However, most inorganic salts in the reaction materials are separated out under the high-temperature and high-pressure state of water, equipment blockage is easy to cause, and when the reaction materials are solid-liquid mixtures, the blockage and discharging problems of solid powder and inorganic salts are more remarkable, so that continuous reaction of a system is difficult to realize, and the popularization and application of the high-temperature and high-pressure water oxidation technology are further limited.
Disclosure of Invention
In view of the above, the invention aims to provide a process and a system for synergistic treatment of solid-liquid mixtures by supercritical (subcritical) water oxidation, which can continuously operate, and realize harmless treatment of two pollutants by utilizing interaction of percolate and incineration fly ash.
The invention is realized by the following technical scheme:
the invention provides a continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment process, which comprises the following steps: stirring and mixing the landfill leachate and the incineration fly ash according to a set liquid-solid ratio to obtain a uniformly mixed material; carrying out high-temperature high-pressure heating oxidation treatment on the uniformly mixed material under oxygen, and then carrying out gaseous discharging and solid-liquid mixed discharging; and carrying out precipitation collection on the solid-liquid mixed state discharge, carrying out gas-solid separation, cooling and gas-liquid separation on the gaseous discharge in sequence, and carrying out corresponding product classification collection.
Preferably, the liquid-solid ratio of the landfill leachate to the incineration fly ash is set to be 4:1 to 10:1, mL/g; setting the temperature of the mixed material for heating and oxidizing treatment under oxygen at 300-400 ℃ and the pressure at 8-23 Mpa, and determining the liquid-solid ratio, the temperature and the pressure according to the characteristics of the reaction materials.
Preferably, the preheating treatment is carried out on the mixed material and oxygen before the heating oxidation treatment, and the preheating treatment is carried out on the mixed material: the electric heating or oil heating can be utilized, and the direct mixed heating or indirect heat exchange can also be performed by utilizing hot water discharged by a power plant.
Preferably, the heating and oxidizing treatment of the uniformly mixed materials under oxygen is as follows: heating is performed by means of electric heating or oil heating means.
Preferably, a continuous feeding mode is adopted for the processed uniformly mixed material and oxygen.
The invention also provides a continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment system for realizing the process, which comprises a stirring container, a reaction unit, a gas-solid separator, a cooler, a gas-liquid separator and a gas storage tank, wherein the stirring container is used for stirring and mixing garbage leachate and incineration fly ash, the reaction unit is respectively connected with the stirring container, the gas-solid separator and the gas storage tank, and the cooler, the gas-liquid separator and the gas-liquid separator are sequentially connected behind the gas-solid separator.
Further, the stirring container is also connected with a water storage tank through a liquid injection pump, and a piston for isolating water from the water storage tank is arranged in the stirring container.
Further, the reaction unit comprises reation kettle A, reation kettle B, reation kettle C and the subsider that top-down communicates in proper order, and stirred vessel links between reation kettle A and reation kettle B, and the gas holder is connected with reation kettle A, reation kettle B, reation kettle C respectively, and each reation kettle outer wall is equipped with the outer heating device of heat preservation, subsider and pipeline outer wall all are equipped with the heat preservation.
Further, a back pressure valve is arranged on a pipeline between the cooler and the gas-liquid separator, and a gas flowmeter and a pneumatic pump are arranged on the gas storage tank.
Further, a preheater A is arranged on a pipeline between the stirring container and the reaction unit, and a preheater B is arranged on a pipeline between the gas storage tank and the reaction unit.
The invention has the advantages that: the process and the system are based on a water oxidation technology under a high-temperature and high-pressure state, fully utilize the synergistic effect of the landfill leachate and the incineration fly ash, realize the harmless treatment of the landfill leachate and the incineration fly ash, and lay a foundation for further resource utilization; meanwhile, the liquid discharged by the system contains a small amount of COD and a certain amount of ammonia nitrogen, and can reach the discharge standard after biochemical treatment, and concentrated liquid is not generated; the gas is discharged after reaching the standard, no pollution is generated, and the solid residue can be recycled. The invention has important pushing effect on solving the difficulties and pain points in the waste incineration industry.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the present system;
FIG. 2 is a process flow diagram of the present system;
reference numerals: 1. the device comprises a water storage tank, a liquid injection pump, a stirring container, a preheater A, a reaction kettle 6, a reaction kettle B, a reaction kettle C, a sedimentation kettle 8, a gas-solid separator 9, a cooler 10, a back pressure valve 11, a gas-liquid separator 12, a preheater B, a gas flowmeter 14, a gas storage tank 15 and a pneumatic pump 16.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
As shown in fig. 1, the continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment system in this embodiment includes a stirring container 3, a reaction unit, a gas-solid separator 9, a cooler 10, a gas-liquid separator 12 and a gas storage tank 15, wherein the stirring container 3 is used for stirring and mixing a certain proportion of landfill leachate and incineration fly ash, so that the leachate and the fly ash are fully mixed to form a uniform mixed material; the reaction unit is respectively connected with the stirring container 3, the gas-solid separator 9 and the gas storage tank 15, and is used for receiving the uniformly mixed material supplied by the stirring container 3 and the industrial oxygen supplied by the gas storage tank 15, and enabling the uniformly mixed material and the industrial oxygen to react under the high-pressure high-temperature water oxidation condition to obtain gaseous discharge and solid-liquid mixed state discharge, and receiving the gaseous discharge discharged by the reaction unit through the gas-solid separator 9; and the gas-solid separator 9 is sequentially connected with a cooler 10 and a gas-liquid separator 12 so as to separate out, collect and discharge the gas, the solid and the liquid in the gaseous discharge.
The incineration fly ash contains heavy metals and dioxin, the garbage percolation contains a large amount of organic matters, the oxides of transition metal V, mn, cu, cr, fe, ni and the like in the incineration fly ash can be used as active components in the environment with the temperature range of 300-400 ℃ and the pressure range of 8-23 MPa and sufficient oxygen, and a large amount of hydroxyl free radicals are generated, so that the strong oxidization of the hydroxyl free radicals can obviously promote the oxidative decomposition of the organic matters in the uniformly mixed materials, and the removal efficiency of the organic matters and the dioxin in the uniformly mixed materials is effectively improved. Meanwhile, the heavy metal ions (Zn, pb, etc.) in the exchange state and the carbonate bonding state which are very easy to leach in the fly ash can be effectively fixed in mineral lattices of silicon, calcium, etc. in the severe oxidation reaction process of landfill leachate organic matters, so that the leaching toxicity of heavy metals is greatly reduced. Thus, the removal of the organic matters of the landfill leachate and the solidification of the heavy metals of the incineration fly ash are mutually promoted and are mutually related to each other, so that liquid with lower COD content, and residues and harmless gas which can be recycled are finally formed.
The stirring container 3 in the embodiment is also connected with the water storage tank 1 through the liquid injection pump 2, and a piston (not marked) for isolating water coming from the water storage tank 1 is arranged in the stirring container 3, clean water in the water storage tank 1 is injected into the stirring container 3 through the liquid injection pump 2, the piston in the stirring container 3 is pushed to move, and uniformly mixed materials under the piston are pressed into the reaction unit to participate in high-temperature water oxidation reaction. Because fly ash is insoluble in the percolate, the equipment can be blocked by using the liquid injection pump 2, meanwhile, the mixed materials of the fly ash and the percolate are layered after standing, in order to enable the mixed materials to be continuously injected into a reaction system, the design of pushing the percolate and the fly ash mixed materials in a stirring container by using clear water is proposed in the embodiment, so that the injection of the mixed materials is realized, and the liquid injection pump 2 has a metering function and can directly reflect the pressed-in amount of the mixed materials.
The reaction unit in this embodiment is composed of a reaction kettle A5, a reaction kettle B6, a reaction kettle C7 and a sedimentation kettle 8 which are sequentially communicated from top to bottom, the stirring container 3 is connected between the reaction kettle A5 and the reaction kettle B6, and the air storage tank 15 is respectively connected with the reaction kettle A5, the reaction kettle B6 and the reaction kettle C7. Thus, the reaction unit is a three-section reaction kettle and sedimentation kettle structure. The three-section reaction kettle comprises: reaction kettle A5, reaction kettle B6 and reaction kettle C7, the inside intercommunication of three reaction kettles. The reason for setting up the syllogic reation kettle is because the dwell time of material in the cauldron is improved, makes the abundant reaction of material. An oxygen injection port is arranged in each section of reaction kettle, and oxygen is fully contacted with materials. The mixed materials of solid and liquid are injected between the reaction kettle A5 and the reaction kettle B6, part of liquid is changed into gas at high temperature, the gas mainly reacts in the reaction kettle A5, and the other part of unvaporized liquid and solid powder are influenced by gravity and mainly react in the reaction kettle B6 and the reaction kettle C7. And the reaction kettle C7 is communicated with the sedimentation kettle 8, and solid powder generated in the reaction kettle C7 and a small amount of non-evaporated liquid enter the sedimentation kettle 8 under the action of gravity and are further sedimented. And the gas in the reaction unit flows out from the exhaust port above the reaction kettle A5 and enters subsequent cooling and separation. In the high-temperature high-pressure reaction process, most of liquid is evaporated into a gaseous state, so that solid powder in reaction materials and reaction products is separated out, and as the reaction progresses, the solid powder is increased, so that the problem of blockage of a reaction system, particularly a pipeline, is caused, and the continuous progress of the reaction is influenced. The system collects solid powder by arranging the sedimentation kettle 8, reduces pipeline blockage and ensures continuous reaction.
The gas tank 15 in the present embodiment is provided with a gas flow meter 14 and a pneumatic pump 16. Before the reaction, the air pressure pump 16 is used for pressing oxygen into the sealed air storage tank 15, so that the pressure in the air storage tank 15 is higher than that of the reaction unit, the oxygen is conveniently injected into the reaction system, and the gas flowmeter 14 is used for controlling the flow of the oxygen.
The pipeline between the stirring vessel 3 and the reaction unit in the present embodiment is provided with a preheater A4, and the pipeline between the air storage tank 15 and the reaction unit is provided with a preheater B13. So that the uniformly mixed materials and oxygen entering the reaction unit can be preheated, the oxidation efficiency of the reaction unit is improved, and the materials are ensured to continuously and rapidly react in the reaction kettle.
In this embodiment, the gaseous effluent discharged from the reaction unit contains a small amount of solid powder, the gaseous effluent discharged from the reaction kettle A5 firstly enters the gas-solid separator 9, the solid powder is intercepted by the filter screen, and the gaseous effluent continuously enters the cooler 10 to cool the high-temperature and high-pressure gas after the reaction. The cooled gaseous discharge material enters a back pressure valve 11, the pressure of the discharged gas is reduced, the discharged gas enters a gas-liquid separator 12 provided with a cooler, the water vapor is changed into liquid water and is discharged into a liquid collecting tank, and the non-condensable gas is discharged into a gas collecting bag. A back pressure valve 11 is arranged on a pipeline between the cooler 10 and the gas-liquid separator 12, the back pressure valve is mainly used for stabilizing and controlling the pressure in the reaction system, and the gas-solid separator 9 and the cooler 10 are arranged in front of the back pressure valve 11 and are mainly used for protecting the back pressure valve 11.
In addition, the material injection pipeline (evenly mixed material and oxygen) of the system is provided with a one-way valve, so that the material is ensured not to flow back, and meanwhile, the system is also provided with a safety valve for overpressure protection. The reaction pressure of the whole system is controlled by a back pressure valve 11, the liquid injection pump has the functions of pressurizing and metering, and the oxygen flow is controlled by a gas flowmeter 14, so that materials can enter the reaction unit according to the set pressure and the set flow. And the outer sides of the preheater and each reaction kettle are respectively provided with a heating device and a heat preservation device, the heating devices adopt electric heating or oil heating devices for heating, the preheating temperature of the preheater is determined by the reaction temperature and the material residence time, and the outer walls of the pipelines are respectively provided with a heat preservation layer.
As shown in fig. 2, the reaction materials of the continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment process comprise landfill leachate, incineration fly ash and oxygen, and the landfill leachate and the incineration fly ash are stirred and mixed in a stirring container 3 according to a set liquid-solid ratio of 4:1-10:1 (mL/g) to obtain a uniform mixed material; quantitatively injecting the uniformly mixed materials into the reaction kettle through the water storage tank 1 and the liquid injection pump 2, and continuously performing high-pressure high-temperature heating oxidation treatment in the reaction kettle under the action of oxygen supplied by the air storage tank 15 to obtain a gaseous discharge and a solid-liquid mixed state discharge; then, the solid-liquid mixed state discharge is precipitated and collected through a sedimentation kettle 8, and the gaseous discharge is subjected to gas-solid separation of a gas-solid separator 9, cooling action of a cooler 10 and gas-liquid separation of a gas-liquid separator 12 in sequence to obtain liquid, gas and solid products, and finally, the corresponding products are classified and collected or discharged.
In a specific embodiment, the landfill leachate and the incineration fly ash are both from a household garbage incineration plant, and the incinerator is a grate furnace. The COD of the landfill leachate is 65000mg/L, the liquid-solid ratio of the landfill leachate to the incineration fly ash is 6:1 (mL/g) under the conditions that the reaction temperature is 350 ℃ and the pressure is 16MPa, and the reaction residence time is 30min at the preheating temperature of 300 ℃. The detection result of the reacted solid powder shows that the heavy metal leaching toxicity and dioxin of the solid powder reach the relevant standards (GB 8978 standard).
In other embodiments, the mixing material preheating treatment can also be performed by direct mixing heating by using hot water discharged by a power plant. For example, the primary or secondary hot water discharged by a waste heat boiler of a power plant, waste hot water and the like participate in the mixing of landfill leachate and incineration fly ash, and the aim of preheating can also be achieved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. The continuous supercritical/subcritical water oxidation solid-liquid mixture cooperative treatment process is characterized by adopting a continuous supercritical/subcritical water oxidation solid-liquid mixture cooperative treatment system, wherein the system comprises a stirring container (3), a reaction unit, a gas-solid separator (9), a cooler (10), a gas-liquid separator (12) and a gas storage tank (15), the stirring container is used for stirring and mixing garbage percolate and incineration fly ash, the reaction unit is respectively connected with the stirring container, the gas-solid separator and the gas storage tank, and the cooler, the gas-liquid separator and the gas-liquid separator are sequentially connected behind the gas-solid separator;
the stirring container is also connected with a water storage tank (1) through a liquid injection pump (2), a piston for isolating water coming from the water storage tank is arranged in the stirring container, a back pressure valve (11) is arranged on a pipeline between the cooler and the gas-liquid separator, and a gas flowmeter (14) and a pneumatic pump (16) are arranged on the gas storage tank;
the reaction unit consists of a reaction kettle A (5), a reaction kettle B (6), a reaction kettle C (7) and a sedimentation kettle (8) which are sequentially communicated from top to bottom, wherein a stirring container is connected between the reaction kettle A and the reaction kettle B, a gas storage tank is respectively connected with the reaction kettle A, the reaction kettle B and the reaction kettle C, and the outer wall of each reaction kettle is provided with a heating device with a heat preservation outer layer;
the process specifically comprises the following steps:
stirring and mixing the landfill leachate and the incineration fly ash in a stirring container (3) according to a set liquid-solid ratio to obtain a uniformly mixed material;
injecting the mixed material into a reaction unit by matching a piston in a stirring container (3) with a water storage tank (1) and a liquid injection pump (2), then carrying out high-temperature high-pressure heating oxidation treatment on the mixed material in the reaction unit under oxygen, and then carrying out gas discharge and solid-liquid mixed state discharge, wherein the mixed material and the oxygen are added into the reaction unit in a continuous feeding mode;
carrying out precipitation collection on solid-liquid mixed state discharge through a sedimentation kettle (8), and carrying out gas-solid separation, cooling and gas-liquid separation on gaseous discharge through a gas-solid separator (9), a cooler (10) and a gas-liquid separator (12) in sequence and carrying out corresponding product classification collection;
and the liquid-solid ratio of the landfill leachate to the incineration fly ash is set to be 4: 1-10:1 mL/g, the temperature of the mixed material for heating and oxidizing treatment under oxygen is set to be 300-400 ℃ and the pressure is set to be 8-23 Mpa.
2. The continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment process according to claim 1, wherein the pre-heat treatment is performed on both the mixed material and oxygen before the heat oxidation treatment, and wherein the pre-heat treatment performed on the mixed material is: direct hybrid heating or indirect heat exchange is performed by using electric heating or oil heating or by using a hot water source discharged from a power plant.
3. The continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment process according to claim 1, wherein the heating oxidation treatment of the uniformly mixed material under oxygen is: heating is performed by means of an electric or oil heating device.
4. The continuous supercritical/subcritical water oxidation solid-liquid mixture co-treatment process according to claim 1, wherein a preheater a (4) is arranged on a pipeline between the stirring container and the reaction unit, and a preheater B (13) is arranged on a pipeline between the gas storage tank and the reaction unit.
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| KR20060022743A (en) * | 2004-09-07 | 2006-03-13 | 한화석유화학 주식회사 | The process for oxidative decomposition of wastewater containing organic material by supercritical conditions |
| CN206494787U (en) * | 2016-08-31 | 2017-09-15 | 北京首创北科环境科技研究院有限公司 | A kind of coprocessing system of incineration of refuse flyash and percolate |
| CN110937731A (en) * | 2019-11-01 | 2020-03-31 | 浙江大学 | Method for co-processing garbage percolate/concentrated solution and household garbage incineration fly ash |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20060022743A (en) * | 2004-09-07 | 2006-03-13 | 한화석유화학 주식회사 | The process for oxidative decomposition of wastewater containing organic material by supercritical conditions |
| CN206494787U (en) * | 2016-08-31 | 2017-09-15 | 北京首创北科环境科技研究院有限公司 | A kind of coprocessing system of incineration of refuse flyash and percolate |
| CN110937731A (en) * | 2019-11-01 | 2020-03-31 | 浙江大学 | Method for co-processing garbage percolate/concentrated solution and household garbage incineration fly ash |
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