Solid waste base polymerization artificial soil and directional application method

Abstract

This invention belongs to the field of environmentally friendly functional new materials, and relates to a method for the targeted application of polymerized artificial soil in solid waste treatment facilities. It also includes a geopolymerizing agent comprising the following components: a compound coupling agent and an auxiliary matrix; the weight ratio of the compound coupling agent to the auxiliary matrix is ​​10-40:20-90; wherein the compound coupling agent comprises the following components: a geopolymerizing liquid and a compound coupling agent; the weight ratio of the geopolymerizing liquid to the compound coupling agent is 50-90:10-50. This invention optimizes and integrates geopolymerization solidification technology, coupling technology, and synergistic technology. By establishing a geopolymerization-coupling-synergistic treatment technology, it promotes the synergistic treatment of multi-source waste, compensates for the shortcomings of geopolymerization solidification technology, and realizes the resource utilization and zero emission of multi-source waste in various scenarios, both inside and outside landfills, and in municipal industrial parks.

Description

Technical Field

[0001] This invention belongs to the field of environmentally friendly functional new materials, and relates to a polymerized artificial soil for solid waste bases and a method for its targeted application. Background Technology

[0002] Geopolymerization solidification technology has gradually become a mainstream technology for solid waste treatment in recent years. Traditional geopolymerization solidification technology involves mixing the waste to be treated with a geopolymer matrix, such as metakaolin, blast furnace slag, volcanic ash, and other usable wastes. After adding an alkaline activator, a geopolymerization reaction occurs to form a geopolymer, thereby stabilizing the solid waste within the solidified body. The pollutants contained within it meet relevant national standards after leaching tests, and can be further disposed of and applied as needed. However, traditional geopolymerization solidification technology requires a high degree of activation of the reaction matrix (generally requiring high-temperature rapid cooling). At room temperature, highly reactive materials such as metakaolin, blast furnace slag, and volcanic ash are typically used as the reaction matrix. Low-reactivity materials are difficult to participate in the geopolymerization reaction and are not easily solidified and stabilized, greatly limiting the types of solid waste that can be treated. Only a small portion of highly reactive solid waste shows good solidification treatment results.

[0003] Meanwhile, geopolymer products based on solid waste, especially those based on hazardous waste, are subject to restrictions imposed by national policies and standards, resulting in extremely limited application methods and scenarios, and even making them difficult to truly utilize. For example, Chinese invention patent CN114713601A discloses a point-to-point targeted disposal and utilization method for fly ash from waste incineration, which uses highly reactive solid wastes such as fly ash and slag to prepare fly ash-based solidified bodies. However, it does not address low-reactivity solid wastes such as tailings and construction waste, and since fly ash is hazardous waste, the application scenarios for the solidified bodies are limited.

[0004] Based on this, the present invention aims to provide a novel technology, different from the above-mentioned treatment processes, to solve the problems of solidification, stabilization treatment and resource utilization of multi-source solid waste with low activation degree of reaction matrix. Summary of the Invention

[0005] One of the objectives of this invention is to provide a geopolymerizing agent, its preparation method, and its application.

[0006] Another objective of this invention is to provide a solid waste-based synergist, its preparation method, and its application.

[0007] Another objective of this invention is to provide a polymeric artificial soil for solid waste sites, its preparation method, and its application.

[0008] On one hand, the present invention provides a geopolymerizing agent comprising the following components: a compound coupling agent and an auxiliary matrix; wherein the weight ratio of the compound coupling agent to the auxiliary matrix is ​​10-40:20-90; wherein the compound coupling agent comprises the following components: a geopolymerizing liquid and a compound coupling agent; wherein the weight ratio of the geopolymerizing liquid to the compound coupling agent is 50-90:10-50.

[0009] In some embodiments, the weight ratio of the compound coupling agent to the auxiliary matrix is ​​10-30:30-60.

[0010] In some embodiments, the compound coupling agent comprises the following components in parts by weight: 50-90 parts of geopolymer liquid and 10-50 parts of compound coupling agent; preferably, the geopolymer agent comprises the following components in parts by weight: 10-40 parts of compound coupling agent and 20-90 parts of auxiliary matrix; preferably, the geopolymer agent comprises the following components in parts by weight: 10-30 parts of compound coupling agent and 30-60 parts of auxiliary matrix.

[0011] In some embodiments, the geopolymer also includes a component: hazardous waste.

[0012] In some embodiments, the weight ratio of the hazardous waste to the compound coupling agent and auxiliary matrix is ​​10-80:10-40:20-90; preferably, the weight ratio of the hazardous waste to the compound coupling agent and auxiliary matrix is ​​10-60:10-30:30-60.

[0013] In some embodiments, the geopolymerizing agent comprises the following components in parts by weight: 10-80 parts hazardous waste, 10-40 parts compound coupling agent, and 20-90 parts auxiliary matrix; preferably, the geopolymerizing agent comprises the following components in parts by weight: 10-60 parts hazardous waste, 10-30 parts compound coupling agent, and 30-60 parts auxiliary matrix.

[0014] In some embodiments, the complex coupling agent is selected from any one or more of the following: silane coupling agents, aluminate coupling agents, phosphate coupling agents, and borate coupling agents.

[0015] In some embodiments, the weight ratio of the silane coupling agent to the aluminate coupling agent, phosphate coupling agent, and borate coupling agent is 20-60:10-40:10-30:5-30; preferably, the weight ratio of the silane coupling agent to the aluminate coupling agent, phosphate coupling agent, and borate coupling agent is 40-60:20-40:15-25:5-15.

[0016] In some embodiments, the complex coupling agent comprises the following components in parts by weight: 20-60 parts of silane coupling agent, 10-40 parts of aluminate coupling agent, 10-30 parts of phosphate coupling agent, and 5-30 parts of borate coupling agent; preferably, the complex coupling agent comprises the following components in parts by weight: 40-60 parts of silane coupling agent, 20-40 parts of aluminate coupling agent, 15-25 parts of phosphate coupling agent, and 5-15 parts of borate coupling agent.

[0017] In some embodiments, the geopolymer liquid includes any one or more of the following components: sodium salt, alkali, calcium lignosulfonate, and solvent.

[0018] In some embodiments, the weight ratio of the sodium salt to the alkali, calcium lignosulfonate, and solvent is 30-50:10-40:10-30:5-20; preferably, the weight ratio of the sodium salt to the alkali, calcium lignosulfonate, and solvent is 40-50:20-30:15-25:5-15.

[0019] In some embodiments, the geopolymer solution comprises the following components by weight: 30-50 parts sodium salt, 10-40 parts alkali, 10-30 parts calcium lignosulfonate, and 5-20 parts solvent; preferably, the geopolymer solution comprises the following components by weight: 40-50 parts sodium salt, 20-30 parts alkali, 15-25 parts calcium lignosulfonate, and 5-15 parts solvent.

[0020] In some embodiments, the sodium salt is selected from one or more of sodium silicate, sodium sulfate, sodium carbonate, and sodium phosphate.

[0021] In some embodiments, the alkali is selected from one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, and HW35 type waste alkali; preferably, the hazardous waste is selected from HW18 type hazardous waste.

[0022] In some implementations, the HW35 type waste alkali includes waste alkali generated from at least one of the following industries: refining petroleum products manufacturing, basic chemical raw material manufacturing, fur tanning and product processing, pulp manufacturing, pharmaceuticals, chemicals, and non-specific industries.

[0023] In some embodiments, the solvent is selected from one or more of landfill leachate, hazardous waste leachate, tailings leachate, and industrial wastewater.

[0024] In some implementations, the hazardous waste includes at least one or more of the following: fly ash from waste incineration, bottom ash from hazardous waste incineration, and non-glassy substances from high-temperature hazardous waste disposal.

[0025] In some embodiments, the auxiliary matrix is ​​selected from at least one or more of fly ash, silica fume, slag, metakaolin, rice husk ash, and volcanic ash.

[0026] In some embodiments, a method for preparing the aforementioned geopolymer includes the following steps:

[0027] (1) The geopolymer liquid is mixed with the composite coupling agent to form a block solidified body, which is then crushed to obtain a granular composite coupling agent;

[0028] (2) The auxiliary matrix and the compound coupling agent are stirred evenly to obtain the geopolymerizing agent; or the auxiliary matrix and the compound coupling agent are added to the hazardous waste and stirred evenly to obtain the geopolymerizing agent.

[0029] The particle size of the granular compound coupling agent is 0.1-2 mm.

[0030] On the other hand, the present invention also provides a solid waste-based synergy, the solid waste-based synergy comprising: the aforementioned geopolymerizing agent.

[0031] In some implementation schemes, the solid waste-based synergist further includes the following components: solid waste, wastewater / liquid, and synergist; the solid waste includes one or more of general solid waste and bulk solid waste.

[0032] In some embodiments, the weight ratio of the solid waste to the wastewater, synergist, and geopolymer is 20-50:5-30:5-40:10-45; preferably, the weight ratio of the solid waste to the wastewater, synergist, and geopolymer is 20-30:15-30:20-30:30-40.

[0033] In some embodiments, the solid waste-based synergist further includes the following components in parts by weight: 20-50 parts solid waste, 5-30 parts wastewater / waste liquid, 5-40 parts synergist, and 10-45 parts geopolymerizing agent; preferably, it further includes the following components in parts by weight: 20-30 parts solid waste, 15-30 parts wastewater / waste liquid, 20-30 parts synergist, and 30-40 parts geopolymerizing agent.

[0034] In some implementation schemes, the bulk solid waste is selected from one or more of the following: coal gangue, fly ash, tailings and associated minerals, smelting slag, industrial by-product gypsum, and construction waste.

[0035] In some embodiments, the tailings include gold ore; preferably, the industrial by-product gypsum includes phosphogypsum.

[0036] In some implementation schemes, the general solid waste is selected from one or more of steel slag, red mud, gold mine tailings, and industrial sludge.

[0037] In some implementation schemes, the wastewater or waste liquid is selected from one or more of landfill leachate, landfill concentrate, municipal sewage, and industrial wastewater.

[0038] In some embodiments, the synergist is selected from any one or more of posi-shell powder, lime slurry, resin, asphalt, cement, and chelating agents.

[0039] In some embodiments, a method for preparing the solid waste-based synergist includes the following steps:

[0040] 1) After mixing the solid waste, add the wastewater and waste liquid, and stir until a slurry is formed;

[0041] 2) Add the synergist and the geopolymerizing agent to the slurry to induce a geopolymerization-coupling-synergistic reaction. After stirring, mold the mixture, demold it, cure it, and crush it to obtain the solid waste-based synergist.

[0042] In some embodiments, the stirring time is 20-40 min; the molding time is 0.5-2 d; and the curing time is 5-14 d.

[0043] On the other hand, the present invention also provides a solid waste-based polymerized artificial soil, including the aforementioned solid waste-based synergy.

[0044] In some embodiments, the artificial soil is prepared by mixing the solid waste-based synergy with at least one or more of soil minerals, organic matter, nutrients, and landfill leachate.

[0045] In some embodiments, the artificial soil comprises the following components in parts by weight: 30-100 parts solid waste-based synergy, 0-50 parts soil minerals, 0-50 parts organic matter, 0-30 parts nutrients, and 10-40 parts landfill leachate.

[0046] In some embodiments, the soil minerals are selected from one or more of the following: quartz powder, bentonite, montmorillonite powder, illite powder, diatomaceous earth, activated clay, desulfurized gypsum, and zeolite powder.

[0047] In some implementation schemes, the organic matter is selected from one or more of the following: crop straw, animal and plant residues, urban sludge, river silt, compost sludge, and livestock and poultry manure.

[0048] In some embodiments, the nutrient is selected from one or more of sodium nitrate, potassium nitrate, superphosphate, and manganese sulfate.

[0049] In some embodiments, when the artificial soil is applied to the subbase material of a landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, and landfill leachate in a weight ratio of 45-55:15-25:5-15:15-25. Preferably, when the artificial soil is applied to the subbase material of a landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, and landfill leachate in weight ratios of 45-55 parts, 15-25 parts, 5-15 parts, and 15-25 parts.

[0050] In some embodiments, when the artificial soil is applied to the subbase material of a landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals and landfill leachate in a weight ratio of 65-75:15-25:5-15; preferably, when the artificial soil is applied to the subbase material of a landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals and landfill leachate in weight ratios of 65-75 parts, 15-25 parts, and 5-15 parts.

[0051] In some implementations, when the artificial soil is applied to the ecological restoration material of the landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in weight proportions of 45-55 parts, 20-30 parts, 5-15 parts, and 2-8 parts, respectively.

[0052] In some embodiments, when the artificial soil is applied to the subgrade material of roads outside landfills, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals and landfill leachate in a weight ratio of 70-80:10-20:5-15; preferably, when the artificial soil is applied to the subgrade material of roads outside landfills, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals and landfill leachate in weight ratios of 70-80 parts, 10-20 parts, and 5-15 parts.

[0053] In some embodiments, when the artificial soil is applied to landfill protection facilities, the artificial soil is prepared by mixing the solid waste-based synergy with landfill leachate at a weight ratio of 60-80:20-40. Preferably, when the artificial soil is applied to landfill protection facilities, the artificial soil is prepared by mixing the solid waste-based synergy with landfill leachate at a weight ratio of 60-80 parts and 20-40 parts.

[0054] In some embodiments, when the artificial soil is applied to off-site construction materials for landfills, the artificial soil is prepared by mixing the solid waste-based synergist with landfill leachate at a weight ratio of 80-100:5-15; preferably, when the artificial soil is applied to off-site construction materials for landfills, the artificial soil is prepared by mixing the solid waste-based synergist with landfill leachate at a weight ratio of 80-100 parts and 5-15 parts.

[0055] In some embodiments, when the artificial soil is applied to landfill-based vegetation restoration soil materials, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in a weight ratio of 20-40:30-40:10-20:5-15:5-15. Preferably, when the artificial soil is applied to landfill-based vegetation restoration soil materials, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in weight ratios of 20-40 parts, 30-40 parts, 10-20 parts, 5-15 parts, and 5-15 parts.

[0056] In some embodiments, when the artificial soil is applied to the vegetation restoration soil material outside the landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in a weight ratio of 25-35:30-40:10-20:5-15:5-15. Preferably, when the artificial soil is applied to the vegetation restoration soil material outside the landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in weight ratios of 25-35 parts, 30-40 parts, 10-20 parts, 5-15 parts, and 5-15 parts.

[0057] In some implementations, when the artificial soil is applied to backfill material for mine pits outside landfills, the solid waste-based synergy is applied directly.

[0058] In some implementations, when the artificial soil is applied to the tailings cover soil material outside the landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in a weight ratio of 40-60:20-40:5-20:2-8:2-8. Preferably, when the artificial soil is applied to the tailings cover soil material outside the landfill, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in weight ratios of 40-60 parts, 20-40 parts, 5-20 parts, 2-8 parts, and 2-8 parts.

[0059] On the other hand, the present invention also provides the application of the aforementioned geopolymer / or the aforementioned solid waste-based synergy / or the aforementioned solid waste-based polymerized artificial soil in landfills and / or outside landfills and / or municipal industrial park recycling.

[0060] In some implementation schemes, the geopolymer / solid waste-based synergy / or the solid waste-based polymerized artificial soil is used in the production of subgrade soil, cover soil, and ecological restoration soil materials for landfills and / or in the production of subgrade soil for roads outside landfills, protective soil, building soil, vegetation restoration soil, and mine backfill materials.

[0061] Furthermore, the present invention also provides a municipal industrial park waste recycling system, comprising:

[0062] Hazardous waste treatment systems, general waste treatment systems, multi-source waste resource utilization and co-processing systems, functional material preparation systems, and designated application sites / facilities.

[0063] Hazardous waste, after being treated by the hazardous waste treatment system, is combined with the products from the general waste treatment system and transported to a co-processing system for further treatment. The combined products, after co-processing by the co-processing system, are then transported to the functional material preparation system. The designated application site is connected to the functional material preparation system. The functional material preparation system processes the waste from the co-processing system into a series of artificial functional material products and transports them to the designated application site / facility for resource utilization. The designated application site is connected to the general waste treatment system, and any new solid or liquid waste generated at the application site is recycled and reused in the general waste treatment system.

[0064] In summary, this application includes at least one of the following beneficial technical effects:

[0065] (1) The geopolymer provided by the present invention can give full play to the role of alkali and salt composite activation, and at the same time, geopolymer coupling effect can be achieved through coupling to achieve more waste treatment.

[0066] (2) This invention optimizes and integrates geopolymerization solidification technology, coupling technology and synergistic technology. By establishing geopolymerization-coupling-synergistic treatment technology, it promotes the synergistic treatment of multi-source waste, makes up for the defects of geopolymerization solidification technology, and realizes the comprehensive utilization and zero emission of multi-source waste.

[0067] (3) The present invention is based on the preparation of geopolymerizing agent from hazardous waste (fly ash from waste incineration), and then the prepared geopolymerizing agent is further mixed with multi-source waste and synergist to produce geopolymerization-coupling-synergistic reaction, so as to obtain solid waste base polymerized artificial soil that can realize resource utilization in different scenarios.

[0068] (4) By adopting the solution provided by the present invention, hazardous waste is transformed into general waste, thereby realizing the synergistic disposal of hazardous waste and other general waste. Attached Figure Description

[0069] Figure 1 This is a display image of the geopolymer product prepared in Example 1 of the present invention;

[0070] Figure 2 This is a product display image of the landfill cushion material (polymerized artificial soil for solid waste base) prepared in Embodiment 3-2 of the present invention;

[0071] Figure 3 This is a product illustration of the functional roadbed material prepared according to an embodiment of the present invention;

[0072] Figure 4 This is a product display image of the vegetation restoration material, a functional product prepared according to an embodiment of the present invention.

[0073] Figure 5 This is a schematic diagram of the municipal industrial park waste recycling system in Embodiment 5 of the present invention. Detailed Implementation

[0074] The following specific embodiments further illustrate the technical solution of the present invention. These specific embodiments do not represent a limitation on the scope of protection of the present invention. Non-essential modifications and adjustments made by others based on the concept of the present invention still fall within the scope of protection of the present invention.

[0075] In this invention, "hazardous waste" refers to at least one or more of the following: fly ash from waste incineration, bottom ash from hazardous waste incineration, and non-glassy substances from high-temperature treatment of hazardous waste; wherein the particle size of hazardous waste powder ranges from 10 to 75 micrometers (μm).

[0076] The "auxiliary matrix" in this invention refers to the highly active auxiliary material required in the process of preparing geopolymerizing agent through geopolymerization chemical reaction. It can provide a skeleton for the formation of geopolymerizing agent, such as highly active materials such as fly ash, silica fume, slag, metakaolin, rice husk ash, and volcanic ash.

[0077] The "geopolymer liquid" in this invention refers to a liquid substance prepared by adding sodium salt, alkali, and calcium lignosulfonate to landfill leachate and mixing and stirring at room temperature. The sodium salt and alkali are mixed to form a compound activator that acts as a salt-alkali compound activator, while the calcium lignosulfonate acts as a retarder during the reaction. The landfill leachate is used as the solvent; in addition to landfill leachate, hazardous waste leachate, tailings leachate, and industrial wastewater can also be used as solvents. The sodium salt can be selected from sodium silicate, sodium sulfate, sodium carbonate, sodium phosphate, etc.; the alkali can be selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, HW35 type waste alkali, etc.

[0078] The "complex coupling agent" in this invention refers to a mixture of an aluminate coupling agent, a phosphate coupling agent, and a borate coupling agent in a specific ratio, prepared by using a silane coupling agent as a solvent. This complex coupling agent is used to couple with geopolymerizing solutions to prepare geopolymers.

[0079] The "composite coupling agent" in this invention refers to a block-shaped solidified body formed by mixing a geopolymer liquid and a composite coupling agent in a certain proportion, which is then crushed to obtain a granular composite coupling agent. The particle size range of the composite coupling agent used in the embodiments of this invention is 0.1-2 mm.

[0080] In this invention, the "geopolymerizing agent" refers to a solid substance prepared by mixing an auxiliary matrix and a compound coupling agent and stirring until homogeneous; or a solid substance prepared by adding an auxiliary matrix and a compound coupling agent to hazardous waste powder and stirring until homogeneous. The geopolymerizing agent in this invention can undergo a geopolymerization coupling reaction with low-activity solid waste.

[0081] The "solid waste-based synergist" in this invention refers to a solidified body formed by mixing solid waste, adding wastewater / waste liquid and stirring until a slurry is formed, adding a geopolymerizing agent and a synergist, and undergoing a geopolymerization-coupling-synergistic reaction. After stirring, the mixture is molded, cured, and pulverized. The solid waste can be general solid waste, or a combination of general solid waste and bulk solid waste. The role of the synergist is to facilitate the geopolymerization-coupling-synergistic reaction between the wastewater / waste liquid, general solid waste, and / or bulk solid waste and the geopolymerizing agent during the formation of the solid waste-based synergist, thereby achieving the purpose of synergistic treatment of multi-source waste.

[0082] The "solid waste base polymerized artificial soil" in this invention refers to a type of polymerized artificial soil prepared by mixing at least one or more raw materials, including soil minerals, organic matter, nutrients, and landfill leachate, into a solid waste base synergy. This polymerized artificial soil can perform different functions and can be used for resource recovery both inside and outside landfills as needed.

[0083] Example 1

[0084] This embodiment provides a geopolymerizing agent, with the following specific formulation:

[0085] Table 1. Formulation of the geopolymer (parts by weight)

[0086]

[0087]

[0088] Table 2 Formulation of the geopolymer (parts by weight)

[0089]

[0090] The specific formulations of the compound coupling agents in Tables 1 and 2 above are shown in Table 3:

[0091] Table 3. Formulation of compound coupling agent (parts by weight)

[0092] Components Compound coupling agent 1 Compound coupling agent 2 Composite coupling agent 3 Geopolymer Liquid 80 90 50 Re-spouse combination 20 10 50

[0093] The specific formulations of the geopolymer solution are shown in Table 4, as listed in Table 3.

[0094] Table 4. Formulations (parts by weight) of the polymerization solution and the complex coupling agent.

[0095] Components Geopolymer Liquid Components Re-spouse combination Sodium hydroxide 42 Silane coupling agent 50 Sodium sulfate 28 Aluminate coupling agent 30 Wood calcium 20 Phosphate coupling agents 10 Landfill leachate 10 Borate coupling agent 10

[0096] The product models of the silane coupling agent, aluminate coupling agent, phosphate coupling agent, and borate coupling agent used in Table 4 are KH-550, DL-411, PRO-90, and PRA-10, respectively.

[0097] This embodiment also provides a method for preparing a geopolymer, the specific steps of which are as follows:

[0098] (1) Using silane coupling agent as solvent, aluminate coupling agent, phosphate coupling agent and borate coupling agent are added in the proportions of the formulation in Table 4 above to obtain a complex coupling agent.

[0099] (2) Sodium salt, alkali, lignosulfonate and landfill leachate are mixed and stirred at room temperature according to the formula ratio in Table 4 above to prepare a slurry and obtain geopolymer liquid;

[0100] (3) Mix the geopolymer liquid and the composite coupling agent according to the formula ratio in Table 3 above to form a block solidified body, and crush it to obtain 0.1-2mm granular composite coupling agent 1, composite coupling agent 2 and composite coupling agent 3;

[0101] (4) Add auxiliary matrix and compound coupling agent to hazardous waste powder according to the formula ratio in Table 1 and Table 2, stir evenly to obtain geopolymer.

[0102] Using the above preparation method, this embodiment prepared 12 kinds of geopolymers, namely geopolymer 1, geopolymer 2, geopolymer 3, geopolymer 4, geopolymer 5, geopolymer 6, geopolymer 7, geopolymer 8, geopolymer 9, geopolymer 10, geopolymer 11 and geopolymer 12.

[0103] Comparative Example 1

[0104] This comparative example is based on Example 1, but differs from Example 1 in that the geopolymerizing agent 3 has a different formulation. The purpose of this comparative example is to investigate the influence of different geopolymerizing agents on the relevant properties of the obtained geopolymerizing agent, as detailed below:

[0105] The formulation of the geopolymer solution in this comparative example is shown in Table 5:

[0106] Table 5. Formulation of the geopolymer solution (parts by weight)

[0107]

[0108] Following the preparation method in Example 1, and based on the geopolymerization liquid formulation in Table 5 above, the corresponding geopolymerizing agent was prepared as follows:

[0109] (1) Using silane coupling agent as solvent, aluminate coupling agent, phosphate coupling agent and borate coupling agent are added to it in the proportion of polymerizing agent 3 prepared in Example 1 to obtain a complex coupling agent;

[0110] (2) Sodium salt, alkali, calcium lignosulfonate and landfill leachate are mixed and stirred at room temperature in the proportions in Table 5 above to prepare slurry, resulting in geopolymer liquid 1, geopolymer liquid 2, geopolymer liquid 3, geopolymer liquid 4, geopolymer liquid 5, geopolymer liquid 6, geopolymer liquid 7, geopolymer liquid 8 and geopolymer liquid 9.

[0111] (3) The geopolymer liquid and the complex coupling agent are mixed in the proportion of geopolymer 3 prepared in Example 1 to form a block solidified body, which is then crushed to obtain a granular complex coupling agent.

[0112] (4) Add auxiliary matrix and compound coupling agent to the hazardous waste powder in the proportion of the geopolymer 3 prepared in Example 1, stir evenly, and obtain geopolymer.

[0113] Using the above preparation method, the comparative example yielded nine geopolymers: geopolymer 13 (geopolymer liquid 1), geopolymer 14 (geopolymer liquid 2), geopolymer 15 (geopolymer liquid 3), geopolymer 16 (geopolymer liquid 4), geopolymer 17 (geopolymer liquid 5), geopolymer 18 (geopolymer liquid 6), geopolymer 19 (geopolymer liquid 7), geopolymer 20 (geopolymer liquid 8), and geopolymer 21 (geopolymer liquid 9).

[0114] Comparative Example 2

[0115] Comparative Example 2 is based on Example 1, but differs from the geopolymerizer 3 in Example 1 in that the formulation of the complex coupler is different. The purpose of this comparative example is to investigate the influence of different complex couplers on the relevant properties of the geopolymerizer, as detailed below:

[0116] Table 6 Formulations (parts by weight) of combined coupling agents

[0117]

[0118] Following the preparation method in Example 1, and based on the complex coupling agent formulation in Table 6 above, the geopolymer was prepared as follows:

[0119] (1) Using silane coupling agent as solvent, aluminate coupling agent, phosphate coupling agent and borate coupling agent are added in proportion to the formulation in Table 6 to obtain complex coupling agent 1, complex coupling agent 2, complex coupling agent 3, complex coupling agent 4, complex coupling agent 5, complex coupling agent 6, complex coupling agent 7, complex coupling agent 8, complex coupling agent 9, complex coupling agent 10 and complex coupling agent 11;

[0120] (2) Sodium salt, alkali, calcium lignosulfite and landfill leachate were mixed and stirred at room temperature according to the proportion of geopolymer 3 prepared in Example 1 to prepare a slurry and obtain geopolymer liquid;

[0121] (3) The geopolymer liquid and the complex coupling agent are mixed in the proportion of geopolymer 3 prepared in Example 1 to form a block solidified body, which is then crushed to obtain a granular complex coupling agent.

[0122] (4) Add auxiliary matrix and compound coupling agent to the hazardous waste powder in the proportion of the geopolymer 3 prepared in Example 1, stir evenly, and obtain geopolymer.

[0123] Using the above preparation method, the comparative example yielded 11 types of geopolymers: geopolymer 22 (complex coupler 1), geopolymer 23 (complex coupler 2), geopolymer 24 (complex coupler 3), geopolymer 25 (complex coupler 4), geopolymer 26 (complex coupler 5), geopolymer 27 (complex coupler 6), geopolymer 28 (complex coupler 7), geopolymer 29 (complex coupler 8), geopolymer 30 (complex coupler 9), geopolymer 31 (complex coupler 10), and geopolymer 32 (complex coupler 11).

[0124] Comparative Example 3

[0125] This comparative example uses geopolymer 3 from Example 1 as a baseline, differing from geopolymer 3 in that the geopolymer liquid and the complex coupling agent are prepared in different proportions. The purpose of this comparative example is to investigate the effect of the complex coupling agent prepared by mixing the geopolymer liquid and the complex coupling agent in different proportions on the relevant properties of the geopolymer, as detailed below:

[0126] Table 7. Formulation of compound coupling agent (parts by weight)

[0127]

[0128]

[0129] Following the preparation method in Example 1, and based on the compound coupling agent formulation in Table 7 above, the geopolymer was prepared as follows:

[0130] (1) Using silane coupling agent as solvent, aluminate coupling agent, phosphate coupling agent and borate coupling agent are added to it in the proportion of polymerizing agent 3 prepared in Example 1 to obtain a complex coupling agent;

[0131] (2) Sodium salt, alkali, calcium lignosulfite and landfill leachate are mixed and stirred at room temperature according to the proportion of geopolymer 3 prepared in Example 1 to prepare a slurry and obtain geopolymer liquid;

[0132] (3) The obtained composite coupling agent and the geopolymer liquid are mixed in the proportions in Table 7 above to obtain particulate composite coupling agent 4, composite coupling agent 5, composite coupling agent 6 and composite coupling agent 7.

[0133] (4) Add auxiliary matrix and compound coupling agent to the hazardous waste powder in the proportion of the geopolymer 3 prepared in Example 1, stir evenly, and obtain geopolymer.

[0134] Using the above preparation method, the comparative example yielded four types of geopolymers: geopolymer 33 (compound coupling agent 4), geopolymer 34 (compound coupling agent 5), geopolymer 35 (compound coupling agent 6), and geopolymer 36 (compound coupling agent 7).

[0135] Example 1

[0136] In accordance with the "General Rules for Identification of Hazardous Wastes" (GB5085.7-2019), the hazardous waste characteristics of the geopolymers prepared in Example 1 and Comparative Examples 1-3 were analyzed from six aspects: reactivity, flammability, corrosivity, leaching toxicity, toxic substance content, and acute toxicity. The explanations and testing standards for the six aspects are as follows:

[0137] 1. Corrosivity: refers to the reaction that waste may undergo when in contact with metals or other materials, such as corrosion, erosion, or gas generation. It is determined according to the corrosivity identification standard of the hazardous waste identification standard (GB 5085.1).

[0138] 2. Acute toxicity: refers to the acute toxic effects that waste may have on humans or ecosystems. It is determined according to the acute toxicity screening standard for hazardous waste identification (GB 5085.2).

[0139] 3. Leaching toxicity: This refers to the characteristic of waste that may dissolve and release toxic chemicals when it comes into contact with media such as water. It is determined according to the leaching toxicity identification standard for hazardous waste (GB 5085.3).

[0140] 4. Flammability: This refers to the property of waste to easily burn or accelerate combustion in air. It is determined according to the flammability identification standard for hazardous waste (GB 5085.4).

[0141] 5. Reactivity: refers to the chemical reactions that may occur when waste comes into contact with other substances. It is determined according to the Hazardous Waste Identification Standard (GB 5085.5).

[0142] 6. Toxic substance content: refers to the type and concentration of toxic substances contained in the waste. It shall be determined according to the Identification Standard for Toxic Substance Content of Hazardous Waste (GB 5085.6).

[0143] The geopolymers obtained in Example 1 and Comparative Examples 1-3 were tested according to the above six standards, and the test results are shown in Table 8.

[0144] Table 8. Hazardous waste characteristics analysis results of the geopolymers prepared in Example 1 and Comparative Examples 1-3

[0145]

[0146] The results of the detection and analysis of the six aspects of the geopolymer obtained in Table 8 above are explained as follows:

[0147] (1) Regarding corrosiveness: The polymer is alkaline, but the pH value is less than 12.5, so it is not corrosive.

[0148] (2) Regarding flammability and reactivity: The polymer does not contain flammable or reactive substances during the preparation process, nor does it have corresponding external combustion or reaction conditions, therefore it does not possess flammability or reactivity.

[0149] (3) Regarding acute toxicity: Based on the calculation results of the toxic substance content, the oral acute toxicity of the obtained polymers from various regions is 5575.22 mg / kg, which is greater than the standard in the "Hazardous Waste Identification Standard Acute Toxicity Preliminary Screening" (GB 5085.2-2007) (oral solid LD50 ≤ 200 mg / kg); considering that the dermal acute toxicity value is usually greater than the oral acute toxicity, it can be judged based on experience that the dermal acute toxicity value is greater than the above standard (dermal contact LD50 ≤ 1000 mg / kg); at the same time, there is no inhalation exposure route for the solidified body. Therefore, it is finally determined that the obtained polymers from various regions do not have acute toxicity.

[0150] (4) Regarding leaching toxicity: In the above-obtained leaching toxicity test results for the geopolymer, no organic matter was detected. For heavy metals, except for lead and cadmium, the remaining detected heavy metals were all 3-4 orders of magnitude below the standard limit. Fluorides were detected, but were 3 orders of magnitude below the standard limit. The specific heavy metal leaching toxicity test results for the geopolymer are as follows:

[0151] For the geopolymer 13-36, heavy metal leaching tests showed lead concentrations exceeding 5.24 mg / L, surpassing the standard limit (leaching limit is 5 mg / L). For geopolymers 13-15, 22-25, and 33-36, cadmium leaching concentrations ranged from 1.15 to 1.69 mg / L, also exceeding the standard limit (leaching limit is 1 mg / L). All other tested indicators met national standard limits. The likely reason is that lead and cadmium are heavy metals present in excessive amounts in waste incineration fly ash, with lead content being higher. When the formulation and dosage of the geopolymer are not within the optimal range, the overall lead leaching concentration exceeds the standard limit, while some cadmium leaching concentrations also exceed the standard limit.

[0152] (5) Regarding the content of toxic substances: Of the geopolymers obtained above, only thallium was not detected; all other heavy metals were detected, with a cumulative concentration of 7830 mg / kg (0.783%), including fluoride. Referring to the limits in Appendix B for toxic substance content (≤3%), and after calculating the molecular weight of the heavy metal compounds, according to the worst-case scenario principle, the content of all corresponding heavy metal compounds is ≤3%. The total dioxin content is 83 ng-TEQ / kg, far less than the standard limit (≤15 μg-TEQ / kg). Therefore, the toxic substance content of the geopolymers obtained above meets the standards.

[0153] The results in Table 8 above show that the geopolymer 1-12 prepared by the method in Example 1 meets the standards in six aspects: reactivity, flammability, corrosivity, leaching toxicity, toxic substance content, and acute toxicity. It does not have the characteristics of hazardous waste and can be disposed of as a safe and stable non-hazardous waste, and can be applied in and out of landfills.

[0154] Example 2

[0155] This embodiment provides a solid waste-based synergist, specifically by using the geopolymer 3 prepared in Example 1 to treat solid waste and wastewater to prepare the solid waste-based synergist. The specific formulation is shown in Table 9.

[0156] Table 9 Formulations (parts by weight) of solid waste-based synergies

[0157]

[0158] This embodiment also provides a method for preparing a solid waste-based synergist, the specific steps of which are as follows:

[0159] (1) According to the formula in Table 9, after mixing the bulk solid waste and general solid waste, add wastewater and waste liquid and stir until a slurry is formed / or add wastewater and waste liquid to general solid waste and stir until a slurry is formed / or add wastewater and waste liquid to bulk solid waste and stir until a slurry is formed.

[0160] (2) Add the synergist and the geopolymer 3 prepared in Example 1 to the obtained slurry to carry out the geopolymer-coupling-synergistic reaction. After stirring for 30 min, put it into the mold, demold after 1 day of molding, cure for 7 days, crush to obtain solid waste-based synergists 1, 2, 3, 4, 5, 6, 7, and 8.

[0161] Comparative Example 4

[0162] This comparative example is based on Example 2, but differs from Example 2 in that the geopolymerizing agent used is different. Specifically, the geopolymerizing agent 3 used in Example 2 is replaced with the geopolymerizing solidifier prepared in Example 7 of Chinese Patent (CN 114713601 A A Method for Point-to-Point Directed Disposal and Utilization of Waste Incineration Fly Ash). The purpose of this comparative example is to explore the treatment effects of different solidifiers (geopolymerizing agent, geopolymerizing solidifier) ​​on different types of solid waste, especially on low-activity solid waste (such as tailings and associated minerals, coal gangue, industrial by-product gypsum, construction waste, industrial sludge, etc.), as detailed below:

[0163] Table 10 Formulations of Solid Waste-Based Synergies (parts by weight)

[0164]

[0165] The preparation method of the solid waste-based synergist is based on Example 2, and the specific steps are as follows:

[0166] (1) According to the formula in Table 10, add the corresponding solid waste components to the wastewater and waste liquid and stir until a slurry is formed; if the solid waste includes general solid waste and bulk solid waste, mix the general solid waste and bulk solid waste first, then add the wastewater and waste liquid and stir until a slurry is formed.

[0167] (2) Add the synergist and the geopolymer curing agent in the comparative patent CN 114713601 A to the obtained slurry, react, stir for 30 min, mold, demold after 1 day of molding, cure for 7 days, crush to obtain the corresponding solid waste-based synergists 9, 10, 11, 12, 13, 14, 15, and 16.

[0168] Comparative Example 5

[0169] This comparative example is based on Example 2, using the solid waste-based synergy 2 obtained in Example 2 as a baseline. The difference from Example 2 lies in the different addition ratios of bulk solid waste, general solid waste, wastewater / waste liquid, synergist, and geopolymerizer. The purpose of this comparative example is to investigate the effects of different addition ratios of bulk solid waste and / or general solid waste with wastewater / waste liquid, synergist, and geopolymerizer on the relevant performance of the solid waste-based synergy, as detailed below:

[0170] Table 11 Formulation of Solid Waste-Based Synergies (parts by weight)

[0171]

[0172] Example 2

[0173] Compressive strength is a key performance indicator of solid waste-based synergies and an important marker of whether a synergy has been formed and its performance. Referring to the requirements for compressive strength of solid waste-based synergies in the "Technical Specification for Solidification and Disposal of Landfill Leachate Concentrate" (T / LNSES001-2020), it should generally be greater than 1.0 MPa. The compressive strength of the solid waste-based synergies obtained in Example 2 and Comparative Examples 4-5 was measured in accordance with the relevant test method for cubic compressive strength in the "Mortar Test Method" (JGJ / T70). Furthermore, leaching tests were conducted on lead, cadmium, and other heavy metals exceeding the standard (other heavy metals did not exceed the standard) and chloride ions in the solid waste-based synergy according to the method specified in "Leaching Toxicity Method for Solid Waste - Acetic Acid Buffer Solution Method" (HJ / T 300-2007); dioxins in the solid waste-based synergy were tested according to the method specified in "Determination of Dioxins in Solid Waste" (HJ 77.3-2008). The limits for heavy metals and dioxins were adopted from the "Pollution Control Standard for Municipal Solid Waste Landfills" (GB 16889-2008), and the limit for soluble chlorine was adopted from the "Technical Specification for Pollution Control of Municipal Solid Waste Incineration Fly Ash (Trial)" (HJ 1134-2020). The durability of the obtained solid waste-based synergy and cement-solidified body can be evaluated by referring to the carbonation test (28-day carbonation depth index; the smaller the carbonation depth, the stronger the durability of the solidified body) in the "Standard for Test Methods of Long-Term Performance and Durability of Ordinary Concrete" (GBT50082-2009). Specific results are as follows:

[0174] Table 12 shows the relevant performance results of the solid waste-based synergy obtained in Example 2 and Comparative Examples 4-5.

[0175]

[0176] As can be seen from Table 12, the solid waste-based synergy formed by the method in Example 2 above has leaching concentrations of pollutants such as heavy metals Pb and Cd, dioxins, and soluble chlorine that exceed the national standard limits. Its compressive strength far exceeds the standard limits, and its carbonization depth is 5-10 times smaller than that of cement solidified bodies, exhibiting good stability and durability.

[0177] Compared with the method of using the geopolymerizing agent in the comparative patent CN 114713601 A to treat solid waste and prepare solid waste-based synergies, the compressive strength of the solidified body obtained by using the geopolymerizing solidifier in the comparative patent CN 114713601 A is lower than that obtained by using the geopolymerizing agent in this invention when treating low-activity waste, and the leaching concentration of some heavy metals also exceeds the standard.

[0178] It can be seen that after geopolymerization-coupling-synergistic reaction, the solid waste-based synergist can synergistically treat multi-source waste such as wastewater, waste liquid, and solid waste. The geopolymer prepared by the method in Example 1 can not only synergistically treat highly active solid waste, but also treat more low-activity solid waste (such as tailings, associated minerals, coal gangue, industrial by-product gypsum, construction waste, etc.), and has excellent solidification and application performance.

[0179] Example 3

[0180] This embodiment provides a polymeric artificial soil for solid waste sites. Specifically, the solid waste-based synergy prepared in Example 2 is mixed with one or more of soil minerals, organic matter, nutrients, and landfill leachate in a certain proportion to prepare polymeric artificial soil for solid waste sites, which can be used as landfill cover material, subbase material, and ecological restoration material.

[0181] This embodiment specifically provides an artificial soil (mound covering) material, the formulation of which is as follows:

[0182] Table 13 Formulation of sump covering material (parts by weight)

[0183] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 3 50 20 10 0 20 Comparison 1 50 0 10 0 20 Comparison 2 50 20 0 0 20 Comparison 3 50 0 0 0 20 Comparison 4 50 0 0 0 0

[0184] According to the "Technical Specification for Closure of Municipal Solid Waste Sanitary Landfills" (GB 51220-2017), artificial impermeable materials can be selected as the covering material for the waste pile. Permeability coefficient, porosity, and other parameters are the main performance indicators of artificial impermeable materials and can be used as the basis for judging their performance. Five types of landfill covering materials were prepared according to the formulas in Table 13, and their relevant performance indicators were tested. The specific results are shown in Table 14.

[0185] Table 14 Performance Indicators of Burst Covering Materials

[0186]

[0187] As can be seen from Table 14, the material performance is optimal when the weight parts of solid waste synergists, soil minerals, organic matter, and landfill leachate in the landfill cover material formulation are 50 parts, 20 parts, 10 parts, and 20 parts, respectively.

[0188] The preparation and application methods of the reactor body covering material are as follows:

[0189] The selected solid waste substrate, soil minerals, and organic matter are placed into a mixer according to the above-mentioned weight ratio. A certain amount of leachate is gradually added during the mixing process. The mixing time is 30 minutes, and the mixture is thoroughly mixed to obtain the prepared cover soil. The cover soil is then evenly sprayed onto the surface of the landfill, ensuring a uniform thickness without significant variations. During the spreading of the cover soil, it is appropriately moistened with water to improve soil stability and ensure a tighter bond to the landfill surface. After the entire landfill surface is evenly covered, the construction area needs to be inspected to ensure uniform soil thickness, neat edges without breakage or cracks, to guarantee the effectiveness of subsequent landfill management.

[0190] Example 4

[0191] This embodiment provides a polymeric artificial soil for solid waste sites. Specifically, the solid waste-based synergy prepared in Example 2 is mixed with one or more of soil minerals, organic matter, nutrients, and landfill leachate in a certain proportion to prepare polymeric artificial soil for solid waste sites, which can be used as landfill cover material, subbase material, and ecological restoration material.

[0192] This embodiment specifically provides an artificial soil (mound cushion layer) material, the formulation of which is as follows:

[0193] Table 15 Formulation of Reservoir Subbase Material (parts by weight)

[0194] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 4 70 20 0 0 10 Comparison 1 70 0 0 0 10 Comparison 2 70 0 0 0 0 Comparison 3 70 50 0 0 10

[0195] According to the "Technical Specification for Closure of Municipal Solid Waste Sanitary Landfills" (GB 51220-2017), clay materials can be used as the bedding material for the waste pile. Permeability coefficient, compressive strength, and particle size are key performance indicators of clay materials and can be used as the basis for judging their performance. Four types of bedding materials were prepared according to the formulas in Table 15, and their relevant performance indicators were tested. The specific results are shown in Table 16.

[0196] Table 16 Performance Indicators of Reclamation Subbase Materials

[0197]

[0198] As can be seen from Table 16, the material performance is optimal when the weight proportions of solid waste-based synergists, soil minerals, and landfill leachate in the material formulation are 70 parts, 20 parts, and 10 parts, respectively.

[0199] The preparation and application methods of the reactor core cushion material are as follows:

[0200] The selected solid waste substrate and soil minerals are placed into a mixer according to the above-mentioned weight ratio. During the mixing process, a certain amount of landfill leachate is gradually added. The mixing method is mechanical stirring to ensure uniform mixing. The prepared solid waste substrate polymerized artificial soil is then prepared into 20-40mm particles with a thickness of 300mm, according to the requirements of the landfill cushion soil.

[0201] Example 5

[0202] This embodiment provides a polymeric artificial soil for solid waste sites. Specifically, the solid waste-based synergy prepared in Example 2 is mixed with one or more of soil minerals, organic matter, nutrients, and landfill leachate in a certain proportion to prepare polymeric artificial soil for solid waste sites, which can be used as landfill cover material, subbase material, and ecological restoration material.

[0203] This embodiment specifically provides an artificial soil (mound ecological restoration) material, the formulation of which is as follows:

[0204] Table 17 Formulation of Ecological Restoration Materials for Heaps (parts by weight)

[0205] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 5 50 25 10 10 5 Comparison 1 50 0 10 0 5 Comparison 2 50 25 0 10 5 Comparison 3 50 25 10 0 5 Comparison 4 50 25 10 10 0 Comparison 5 50 0 0 0 0 Comparison 6 50 50 10 10 5

[0206] According to the "Technical Specification for Closure of Municipal Solid Waste Sanitary Landfills" (GB 51220-2017), green soil can be used for ecological restoration (green layer) in the landfill covering system. Potassium, total phosphorus, organic matter, total nitrogen, bulk density, porosity, and permeability coefficient are the main performance indicators of green soil and can be used as the basis for judging its performance. Seven types of landfill ecological restoration (green layer) materials were prepared according to the formulas in Table 17, and their relevant performance indicators were tested. The specific results are shown in Table 18.

[0207] Table 18 Performance Indicators of Ecological Restoration Materials for Pit Bodies

[0208]

[0209] As can be seen from Table 18, the material performance is optimal when the weight parts of solid waste-based synergists, soil minerals, organic matter, nutrients, and landfill leachate in the material formulation are 50 parts, 25 parts, 10 parts, 10 parts, and 5 parts, respectively.

[0210] The preparation and application methods of heap ecological restoration materials are as follows:

[0211] Selected solid waste substrate, soil minerals, organic matter, and nutrients are placed into a mixer according to the above-mentioned weight proportions. A certain amount of landfill leachate is gradually added during the mixing process. Mechanical mixing is used for the ecological restoration soil, with a mixing time of 1 hour. During the preparation process, multiple factors such as morphological, physicochemical, and biological indicators need to be considered to ensure that the prepared ecological restoration soil meets pollutant discharge standards. The ecological restoration soil is mainly used for covering the surface and surrounding edges of the landfill to improve soil quality, enhance soil nutrients, and promote the recovery of soil microbial communities. The thickness of the ecological restoration soil is 20-30 cm.

[0212] Example 6

[0213] This embodiment provides a polymerized artificial soil for solid waste sites. Specifically, the solid waste-based synergy prepared in Example 2 is mixed with soil minerals, organic matter, nutrients, and landfill leachate in a certain proportion to prepare polymerized artificial soil for solid waste sites. It is used outside landfills, including for roadbeds, protective facilities, building facilities, vegetation restoration, mine backfilling and reuse, and tailings area ecological restoration.

[0214] As can be seen from Example 1, the geopolymer coupling agent prepared in Example 1 can be identified as non-hazardous waste. Similarly, the solid waste-based polymeric artificial soil prepared based on the geopolymer coupling agent, since all its components are non-hazardous waste, can also be identified as non-hazardous waste. Therefore, referring to the requirements of GB 18599-2020 "Standard for Pollution Control of General Industrial Solid Waste Storage and Landfill" and DB / T 2763-2022 "Technical Specification for General Industrial Solid Waste Used for Mine Pit Backfilling and Ecological Restoration", the solid waste-based polymeric artificial soil prepared based on the solid waste-based synergist obtained in Example 2, mixed with soil minerals, organic matter, nutrients, and landfill leachate in a certain proportion, can be used not only in landfills but also outside landfills.

[0215] Based on this, this embodiment provides an artificial soil (roadbed) material with the following formula:

[0216] Table 19 Formulas for Road Subgrade Materials (parts by weight)

[0217] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 6 75 15 0 0 10 Comparison 1 75 0 0 0 10 Comparison 2 75 15 0 0 0 Comparison 3 75 0 0 0 0

[0218] According to the standard "Gravel and Crushed Stone for Construction" (GB / T 14685-2011), crushed stone can be used for road subgrade. Compressive strength, soundness, crushing value, and particle size are the main performance indicators of crushed stone and can be used as the basis for judging its performance. Four types of road subgrade materials were prepared according to the formulas in Table 19, and their relevant performance indicators were tested. The specific results are shown in Table 20.

[0219] Table 20 Performance Indicators of Road Subgrade Materials

[0220]

[0221] As can be seen from Table 20, the material performance is optimal when the weight parts of solid waste-based synergists, soil minerals, and landfill leachate in the material formulation are 75 parts, 15 parts, and 10 parts, respectively.

[0222] The preparation and application methods of road subgrade materials (such as road subgrade soil and foundation soil) are as follows:

[0223] Road subgrade soil is a part of earthwork engineering in road construction, used to fill the road foundation. Adding appropriate amounts of soil minerals to the solid waste-based composite material can enhance the mechanical properties and stability of the soil, while also helping to isolate and adsorb pollutants, protecting the groundwater environment. According to construction needs, the selected solid waste-based composite material and soil minerals are placed in a mixer according to the above-mentioned weight ratio. During the mixing process, a certain amount of landfill leachate is gradually added to prepare the road subgrade soil. This subgrade soil can replace 0-100mm continuously graded, 200mm thick cushion gravel material, or it can replace crushed stone material with a particle size ratio of 10-30:10-20:5-10:0-5 = 21:33:18:28, 200mm thick cement-stabilized base course. The road subgrade soil needs to be evenly spread and compacted to ensure a tight bond between the road foundation and the subgrade, and a high degree of surface smoothness.

[0224] Example 7

[0225] Based on Example 6, this example specifically provides an artificial soil (protective facility) material, the formulation of which is as follows:

[0226] Table 21 Formulation of Protective Facility Materials (parts by weight)

[0227] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 7 70 0 0 0 30 Comparison 1 70 0 0 0 0 Comparison 2 70 0 0 0 50

[0228] According to the "Technical Specification for Precast Concrete Block Slope Protection Engineering" (DB 34 / T 2233-2014), precast concrete blocks can be used for protective facilities such as slope protection, sand retaining walls, and sound insulation walls. Compressive strength, soundness, crushing value, and water absorption rate are the main performance indicators of precast concrete blocks and can be used as the basis for judging their performance. Three types of protective facility materials were prepared according to the formula in Table 21, and their relevant performance indicators were tested. The specific results are shown in Table 22.

[0229] Table 22 Performance Indicators of Protective Facility Materials

[0230]

[0231] As can be seen from Table 22, the material performance is optimal when the weight parts of solid waste-based synergist and landfill leachate in the protective facility material formulation are 70 parts and 30 parts, respectively.

[0232] The preparation and application methods for protective facilities (such as protective slopes, sand retaining walls, and sound insulation panels) are as follows:

[0233] The selected solid waste-based synergist and landfill leachate are placed into a mixer according to the above weight ratio, stirred and mixed, and the protective facilities are prepared according to the specific functions of the protective facilities, such as the strength and hardness of the protective slope, the height, thickness and tilt angle of the sand retaining wall, and the thickness and density of the sound insulation board.

[0234] Example 8

[0235] Based on Example 6, this example specifically provides an artificial soil (building facility) material, the formulation of which is as follows:

[0236] Table 23 Formulas for Building Materials

[0237]

[0238]

[0239] According to the "Technical Specification for Foundation Pit Support" (JGJ 120-2012), the compressive strength and robustness of building facilities such as isolation piers, pipelines, and slope protection piles can be used as the basis for performance judgment. Three types of building facility materials were prepared according to the formula in Table 23, and their relevant performance indicators were tested. The specific results are shown in Table 24.

[0240] Table 24 Performance Indicators of Building Materials

[0241]

[0242] As can be seen from Table 24, the material performance is optimal when the weight parts of solid waste-based synergists and landfill leachate in the building facility material formulation are 90 parts and 10 parts, respectively.

[0243] The preparation and application methods for building facilities (such as isolation piers, pipelines, and slope protection piles) are as follows:

[0244] The selected solid waste-based synergist and landfill leachate are placed into a mixer according to the above weight ratio, stirred and mixed, and various building facilities with a compressive strength greater than 45MPa are prepared.

[0245] Example 9

[0246] Based on Example 6, this example specifically provides an artificial soil (vegetation restoration soil) material, the formulation of which is as follows:

[0247] Table 25 Formulation of vegetation restoration soil (parts by weight)

[0248] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 9 30 35 15 10 10 Comparison 1 30 35 0 10 10 Comparison 2 30 35 15 0 10 Comparison 3 30 35 15 10 0 Comparison 4 30 0 0 0 0

[0249] According to the "Technical Specification for the Use of General Industrial Solid Waste for Mine Pit Backfilling and Ecological Restoration" (DB / T 2763-2022), vegetation restoration soil can be selected for ecological restoration. Potassium, total phosphorus, organic matter, total nitrogen, bulk density, porosity, and permeability coefficient are the main performance indicators of vegetation restoration soil and can be used as the basis for judging its performance. Five types of vegetation restoration soil were prepared according to the formula in Table 25, and their relevant performance indicators were tested. The specific results are shown in Table 26.

[0250] Table 26 Soil Performance Indicators for Vegetation Restoration

[0251]

[0252]

[0253] As shown in Table 26, the optimal material performance was achieved when the weight proportions of solid waste-based synergist, soil minerals, organic matter, nutrients, and landfill leachate in the vegetation restoration soil formulation were 30 parts, 35 parts, 15 parts, 10 parts, and 10 parts, respectively. The preparation and application methods for vegetation restoration soil are as follows:

[0254] Selected solid waste substrate, soil minerals, organic matter, and nutrients are placed into a mixer according to the above-mentioned weight ratios. During mixing, a certain amount of landfill leachate is gradually added to prepare a granular vegetation restoration soil. Vegetation restoration includes soil preparation, planting, regular watering and fertilization, and pest and disease control. First, the site requiring vegetation restoration is cleaned and prepared, removing surface debris. The vegetation restoration soil is evenly spread on the surface of the site, with a thickness of no less than 0.5 meters, providing a basic support for subsequent plant growth. Plant varieties that are salt-tolerant, drought-resistant, and cold-resistant, and can grow under special conditions, are selected for planting. After construction is completed, regular monitoring and evaluation are required, including testing for plant growth, soil physicochemical properties, heavy metals, and organic matter, in order to gradually restore the ecological environment of the polluted area.

[0255] Example 10

[0256] Based on Example 6, this example specifically provides an artificial soil (mine backfill soil) material, the formulation of which is as follows:

[0257] Table 27 Formula for mine pit backfill soil (parts by weight)

[0258] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 10 100 0 0 0 0 Comparison 1 50 0 10 5 5 Comparison 2 50 30 0 5 5 Comparison 3 50 30 10 0 5 Comparison 4 50 30 10 5 0 Comparison 5 50 0 0 0 0

[0259] According to the "Technical Specification for the Use of General Industrial Solid Waste for Mine Pit Backfilling and Ecological Restoration" (DB / T 2763-2022), backfill soil can be selected for mine pit backfilling. Parameters such as bulk density, porosity, and permeability coefficient are the main performance indicators of backfill soil and can be used as the basis for judging its performance. Seven types of mine pit backfill soil were prepared according to the formulas in Table 27, and their relevant performance indicators were tested. The specific results are shown in Table 28.

[0260] Table 28 Performance Indicators of Mine Pit Backfill Soil

[0261] detection indicators <![CDATA[Bulk density (g / cm 3 )]]> Porosity (%) Permeability coefficient (cm / s) Example 10 1.48 15.31 <![CDATA[6.9×10 -5 ]]> Comparison 1 1.27 8.23 <![CDATA[8.1×10 -7 ]]> Comparison 2 1.25 10.29 <![CDATA[4.3×10 -6 ]]> Comparison 3 1.34 11.43 <![CDATA[6.4×10 -6 ]]> Comparison 4 1.19 8.94 <![CDATA[2.8×10 -6 ]]> Comparison 5 1.36 13.47 <![CDATA[6.1×10 -5 ]]> standard 1.0-1.5 ≤30 <![CDATA[≤1×10 -5 ]]>

[0262] As can be seen from Table 28, the best performance is achieved when only solid waste-based synergistic materials are used in the mine pit backfill soil formulation.

[0263] The preparation and application methods for backfill soil in mine pits (such as coal mines, phosphate mines, bauxite mines, and gold mines) are as follows:

[0264] For example, after mining ceases in a coal mine, the pit needs to be backfilled. The above components are mixed evenly in the specified proportions to prepare backfill soil. This backfill soil is then laid in the pit, filling it to the standard height. During the backfilling process, it is crucial to control the moisture content of the backfill soil, strictly adhere to the filling sequence and construction specifications, and avoid problems such as hollow areas and settlement.

[0265] Example 11

[0266] Based on Example 6, this example specifically provides an artificial soil (tailings cover soil) material, the formulation of which is as follows:

[0267] Table 29. Formula for tailings cover soil (parts by weight)

[0268] Solid waste-based synergy Soil minerals organic matter Nutrients Landfill leachate Example 11 50 30 10 5 5 Comparison 1 50 0 10 5 5 Comparison 2 50 30 0 5 5 Comparison 3 50 30 10 0 5 Comparison 4 50 30 10 5 0 Comparison 5 50 0 0 0 0

[0269] According to the "Technical Specifications for Ecological Environmental Protection and Restoration of Mines (Trial)" (HJ 651-2013), the performance of tailings cover soil can be judged based on parameters such as particle size, porosity, and permeability coefficient. Six types of tailings cover soil materials were prepared according to the formulas in Table 29, and their relevant performance indicators were tested. The specific results are shown in Table 30.

[0270] Table 30 Performance Indicators of Tailings Area Cover Soil

[0271] detection indicators Particle size (mm) Porosity (%) Permeability coefficient (cm / s) Example 11 0.1-3 8.53 <![CDATA[5.6×10 -7 ]]> Comparison 1 0.1-3 8.92 <![CDATA[7.3×10 -7 ]]> Comparison 2 0.1-3 9.46 <![CDATA[9.1×10 -7 ]]> Comparison 3 0.1-3 12.38 <![CDATA[1.4×10 -6 <!-- 23 -->]]> Comparison 4 0.1-3 11.52 <![CDATA[2.7×10 -6 ]]> Comparison 5 0.1-3 9.16 <![CDATA[3.5×10 -5 ]]> standard -- ≤30 <![CDATA[≤1×10 -5 ]]>

[0272] As can be seen from Table 30, the material performance is optimal when the weight parts of solid waste synergist, soil minerals, organic matter, nutrients, and landfill leachate in the tailings cover soil formula are 50 parts, 30 parts, 10 parts, 5 parts, and 5 parts, respectively.

[0273] The preparation and application methods of cover soil for tailings areas (such as coal gangue, phosphogypsum, red mud, etc.) are as follows:

[0274] For example, large stockpiles of phosphogypsum tailings have a severe impact on the surrounding environment, necessitating the covering of the tailings area. The above materials are mixed evenly according to the specified proportions to ensure the uniformity and stability of the cover soil. The cover soil is then spread on the surface of the phosphogypsum tailings area and compacted to prevent voids and accumulation, ensuring uniformity and coverage. This covering method protects the land surface from erosion by external substances. Heavy machinery is used to repeatedly compact the cover soil surface to ensure a smooth and firm surface. By covering the phosphogypsum tailings area, the ultimate goal is to reduce the environmental hazards posed by the tailings.

[0275] Example 12

[0276] This embodiment provides a municipal industrial park waste recycling system. Through this system, multi-source waste can be effectively and comprehensively treated. This is conducive to achieving economies of scale and centralized control of pollutants. Furthermore, the coordinated treatment of multi-source waste in the park saves project investment and land resources, improves utilization efficiency, and facilitates the integration and linkage of technologies and projects to form a complete circular industrial chain.

[0277] A waste recycling system for municipal industrial parks, such as Figure 5 As shown, it includes:

[0278] (1) Hazardous waste treatment system: This system is mainly used to treat hazardous waste. The hazardous waste that this system can treat includes: HW18 hazardous waste as specified in the National Hazardous Waste List (2021 Edition), such as fly ash from waste incineration, bottom ash from hazardous waste incineration, and non-glassy substances from high-temperature treatment of hazardous waste. In the hazardous waste treatment system, based on the steps in Example 1, an auxiliary matrix and a compound coupling agent are added to the hazardous waste powder and stirred evenly to convert the hazardous waste into a geopolymer, thereby further realizing the conversion of hazardous waste into non-hazardous waste in the hazardous waste treatment system, i.e., geopolymer.

[0279] The hazardous waste treatment system is connected to the general waste treatment system. After treatment, the hazardous waste is combined with the products of the general waste treatment system and transported to the co-processing system.

[0280] (2) General waste treatment system: The general waste treatment system is mainly used for general waste, such as bulk solid waste, general solid waste, wastewater and waste liquid. The general waste treatment system is connected to the hazardous waste treatment system. After treatment, the general waste is combined with the hazardous waste treatment products and transported to the co-processing system.

[0281] (3) Multi-source waste resource utilization co-processing system: The co-processing system is connected to the hazardous waste treatment system and the general waste treatment system. In the multi-source waste resource utilization co-processing system, based on the steps of Example 2, the geopolymer obtained from the hazardous waste treatment system is co-processed with the general waste (bulk solid waste, general solid waste, wastewater and waste liquid) in the general waste treatment system. The processing steps include:

[0282] Bulk solid waste and general solid waste from general waste treatment systems are mixed, and wastewater and waste liquid are added and stirred into a slurry. Geopolymerizing agents and synergists from hazardous waste treatment systems are added. Geopolymerization-coupling-synergistic reaction occurs in the multi-source waste resource utilization synergistic treatment system. After stirring, curing, molding, and crushing, a solid waste-based synergistic body is formed.

[0283] (4) Functional material preparation system: The functional material preparation system is connected to the multi-source waste resource utilization co-processing system. The combined products of the hazardous waste system and the general waste treatment system are co-processed in the multi-source waste resource utilization co-processing system to obtain solid waste-based co-processing body. The obtained solid waste-based co-processing body is then transported to the functional material preparation system.

[0284] In the functional material preparation system, according to the specific application scenario requirements, such as wanting to prepare a pile cover material, based on the method of Example 3, the solid waste base synergy is mixed with soil minerals, organic matter, and landfill leachate in proportions of 50%, 20%, 10%, and 20%, respectively, to prepare a solid waste base polymer artificial soil for pile cover material in the functional material preparation system.

[0285] (5) Designated application site / facilities: The designated application site is connected to the functional material preparation system, and the stack cover functional material prepared in the functional material preparation system is transported to the designated application site (landfill) for resource utilization.

[0286] The designated application sites are connected to the general waste treatment system, and new solid and liquid waste generated at the application sites can be recycled and reused in the general waste treatment system.

[0287] By relying on the municipal industrial park waste recycling system and applying the solid waste base polymerized artificial soil and directional application method provided by this invention, multiple pollutants such as hazardous waste, bulk solid waste, general solid waste, wastewater and waste liquid can be co-solidified and disposed of in the industrial park and fully utilized as resources, realizing the internal digestion of waste and achieving the goal of comprehensive utilization of multi-source waste and zero emissions.

[0288] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A geopolymerizing agent, characterized in that, The geopolymerizing agent comprises the following components in parts by weight: 10-30 parts of a compound coupling agent and 30-60 parts of an auxiliary matrix; the compound coupling agent comprises the following components in parts by weight: 50-90 parts of a geopolymerizing liquid and 10-50 parts of a compound coupling agent; the compound coupling agent comprises the following components in parts by weight: 20-60 parts of a silane coupling agent, 10-40 parts of an aluminate coupling agent, 10-30 parts of a phosphate coupling agent, and 5-30 parts of a borate coupling agent; the geopolymerizing liquid comprises the following components in parts by weight: 30-50 parts of a sodium salt, 10-40 parts of an alkali, 10-30 parts of calcium lignosulfonate, and 5-20 parts of a solvent; the auxiliary matrix is ​​selected from one or more of fly ash, silica fume, slag, metakaolin, rice husk ash, and volcanic ash.

2. The geopolymerizing agent as described in claim 1, characterized in that, The geopolymer also includes the component: hazardous waste; the weight ratio of the hazardous waste to the compound coupling agent and auxiliary matrix is ​​10-80:10-40:20-90.

3. The geopolymerizing agent as described in claim 2, characterized in that, The weight ratio of the hazardous waste to the compound coupling agent and auxiliary matrix is ​​10-60:10-30:30-60.

4. The geopolymerizing agent as described in claim 1, characterized in that, The complex coupling agent comprises the following components in parts by weight: 40-60 parts of silane coupling agent, 20-40 parts of aluminate coupling agent, 15-25 parts of phosphate coupling agent, and 5-15 parts of borate coupling agent.

5. The geopolymerizing agent as described in claim 1, characterized in that, The sodium salt is selected from one or more of sodium silicate, sodium sulfate, sodium carbonate, and sodium phosphate; the alkali is selected from one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, and HW35 type waste alkali; the solvent is selected from one or more of landfill leachate, hazardous waste leachate, tailings leachate, and industrial wastewater; the HW35 type waste alkali includes waste alkali generated from at least one of the following industries: refined petroleum product manufacturing, basic chemical raw material manufacturing, fur tanning and product processing, pulp manufacturing, pharmaceuticals, chemicals, or non-specific industries.

6. The geopolymerizing agent as described in claim 5, characterized in that, The geopolymer solution comprises the following components by weight: 40-50 parts sodium salt, 20-30 parts alkali, 15-25 parts calcium lignosulfonate, and 5-15 parts landfill leachate.

7. The geopolymerizing agent as described in claim 2, characterized in that, The hazardous waste is selected from HW18 category hazardous waste; the hazardous waste includes at least one or more of the following: fly ash from waste incineration, bottom ash from hazardous waste incineration, and non-glassy substances from high-temperature treatment of hazardous waste.

8. A method for preparing a geopolymerizing agent as described in any one of claims 1-7, characterized in that, Includes the following steps: (1) Mix the geopolymer liquid with the composite coupling agent to form a block solidified body, crush it, and obtain a granular composite coupling agent; (2) Stir the auxiliary matrix and the composite coupling agent evenly to obtain the geopolymer, or add the auxiliary matrix and composite coupling agent to the hazardous waste, stir evenly, and obtain the geopolymer; The particle size of the granular compound coupling agent is 0.1-2 mm.

9. A solid waste-based synergy, characterized in that, The solid waste-based synergist comprises: a geopolymerizing agent as described in any one of claims 1-7, solid waste, wastewater, and a synergist; the weight ratio of the solid waste to the wastewater, the synergist, and the geopolymerizing agent is 20-50: 5-30: 5-40: 10-45.

10. The solid waste-based synergy as described in claim 9, characterized in that, The weight ratio of solid waste to wastewater, synergist, and geopolymer is 20-30:15-30:20-30:30-40.

11. The solid waste-based synergy as described in any one of claims 9-10, characterized in that, The solid waste includes at least one or more of general solid waste and bulk solid waste; the bulk solid waste is selected from one or more of coal gangue, fly ash, tailings and associated minerals, smelting slag, industrial by-product gypsum, and construction waste; the tailings include gold mines; the industrial by-product gypsum includes phosphogypsum; the general solid waste is selected from one or more of steel slag, red mud, gold mine tailings, and industrial sludge; the wastewater is selected from one or more of landfill leachate, landfill concentrate, urban sewage, and industrial wastewater; the synergist is selected from any one or more of posi-shell powder, lime slurry, resin, asphalt, cement, and chelating agents.

12. A method for preparing a solid waste-based synergist as described in any one of claims 9-11, characterized in that, Includes the following steps: 1) After mixing the solid waste, add the wastewater and waste liquid, and stir until a slurry is formed; 2) Add the synergist and the geopolymerizing agent to the slurry to induce a geopolymerization-coupling-synergistic reaction. After stirring, the mixture is molded, demolded, cured, and pulverized to obtain the solid waste-based synergist. The stirring time is 20-40 min; the molding time is 0.5-2 d; and the curing time is 5-14 d.

13. A polymeric artificial soil for solid waste treatment, characterized in that, Includes the solid waste-based synergy as described in any one of claims 9-11.

14. The polymerized artificial soil for solid waste treatment as described in claim 13, characterized in that, The artificial soil comprises the following components by weight: 30-100 parts solid waste substrate, 0-50 parts soil minerals, 0-50 parts organic matter, 0-30 parts nutrients, and 10-40 parts landfill leachate.

15. The polymerized artificial soil for solid waste treatment as described in claim 14, characterized in that, The soil minerals are selected from one or more of the following: quartz powder, bentonite, montmorillonite powder, illite powder, diatomaceous earth, activated clay, desulfurized gypsum, and zeolite powder; the organic matter is selected from one or more of the following: crop straw, animal and plant residues, urban sludge, river silt, compost sludge, and livestock and poultry manure; the nutrients are selected from one or more of the following: sodium nitrate, potassium nitrate, superphosphate, and manganese sulfate.

16. The polymerized artificial soil for solid waste treatment as described in claim 13, characterized in that, When the artificial soil is applied to the subbase material of a landfill, it is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, and landfill leachate in a weight ratio of 45-55:15-25:5-15:15-25; or... When the artificial soil is applied to the subbase material of a landfill, it is prepared by mixing the solid waste-based synergist with soil minerals and landfill leachate in a weight ratio of 65-75:15-25:5-15; or... When the artificial soil is applied as an ecological restoration material for landfill bodies, it is prepared by mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in a weight ratio of 45-55:20-30:5-15:5-15:2-8; or... When the artificial soil is applied to the subgrade material of roads outside landfills, the artificial soil is prepared by mixing the solid waste-based synergist with soil minerals and landfill leachate in a weight ratio of 70-80:10-20:5-15; or... When the artificial soil is applied to landfill external protection facilities, it is prepared by mixing the solid waste-based synergist with landfill leachate at a weight ratio of 60-80:20-40; or... When the artificial soil is applied to off-site construction facilities materials, the artificial soil is prepared by mixing the solid waste-based synergist with landfill leachate at a weight ratio of 80-100:5-15; or... When the artificial soil is applied to vegetation restoration soil materials outside landfills, the artificial soil is prepared by the following method: mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in a weight ratio of 20-40:30-40:10-20:5-15:5-15; or, When the artificial soil is applied to vegetation restoration soil materials outside landfills, the artificial soil is prepared by the following method: mixing the solid waste-based synergist with soil minerals, organic matter, nutrients, and landfill leachate in a weight ratio of 25-35:30-40:10-20:5-15:5-15; or... When applying the artificial soil to backfill materials for mine pits outside landfills, the solid waste-based synergy can be applied directly; or... When the artificial soil is applied to the tailings cover soil material outside the landfill, the artificial soil is prepared by the following method: the solid waste-based synergy is mixed with soil minerals, organic matter, nutrients and landfill leachate in a weight ratio of 40-60:20-40:5-20:2-8:2-8.

17. The application of the geopolymer as described in any one of claims 1-7, or the solid waste-based synergy as described in any one of claims 9-11, or the solid waste-based polymerized artificial soil as described in any one of claims 13-16 in landfills, outside landfills, and in municipal industrial park recycling; The applications of the landfill include their use in the production of landfill subgrade soil, cover soil, and ecological restoration soil materials; the applications outside the landfill include their use in the production of roadbed soil, protective facility soil, building soil, vegetation restoration soil, and mine backfill materials.

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