Preparation method of modified coal gangue-municipal sludge-based charcoal soil conditioner

Abstract

The invention relates to the technical field of biochar preparation materials, and discloses a preparation method of a modified coal gangue-municipal sludge-based biochar soil conditioner, which comprises the following steps: crushing a coal gangue raw material and a municipal sludge raw material to obtain coal gangue powder and municipal sludge powder; the coal gangue powder and the municipal sludge powder are leached to obtain leached coal gangue powder and leached municipal sludge powder, the leached coal gangue powder and the leached municipal sludge powder are mixed to obtain mixed solid waste powder, the mixed solid waste powder is pyrolyzed to obtain pyrolyzed biochar, the pyrolyzed biochar is acidized to obtain acidized biochar, and the acidized biochar is acidized to obtain acidized biochar. The acidified biochar is subjected to ball milling, and first modified biochar is obtained; active sites of the first modified charcoal are increased, and the target charcoal soil conditioner is obtained. The soil improvement effect of the biochar can be improved.

Description

Technical Field

[0001] The invention relates to a method for preparing a modified gangue-municipal sludge-based biochar soil conditioner, and belongs to the technical field of biochar preparation materials. Background Art

[0002] Coal gangue is the main by-product of coal mining and washing, municipal sludge is the product of urban sewage treatment, and biochar is the product of high-temperature pyrolysis of an organic material in an oxygen-limited environment. It has the characteristics of rich pore structure, large specific surface area, and high porosity. It is an environmentally friendly adsorption material and is widely used in the field of soil improvement.

[0003] Biochar soil conditioners are usually obtained by pyrolyzing biomass raw materials (such as agricultural waste, wood chips, etc.) under anaerobic conditions, and the resulting biochar is directly used as a soil conditioner. This method lacks in-depth analysis of the characteristics of the raw materials, resulting in poor soil improvement effects. Summary of the invention

[0004] The invention provides a method and system for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner, the main purpose of which is to improve the improvement effect of biochar on soil.

[0005] To achieve the above object, the present invention provides a method for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner, comprising:

[0006] Obtaining a coal gangue raw material and a municipal sludge raw material, identifying the coal gangue raw material characteristics and the municipal sludge raw material characteristics of the coal gangue raw material and the municipal sludge raw material, and based on the coal gangue raw material characteristics and the municipal sludge raw material characteristics, crushing the coal gangue raw material and the municipal sludge raw material to obtain coal gangue powder and municipal sludge powder;

[0007] Collecting the gangue powder images and municipal sludge powder images of the gangue powder and municipal sludge powder, identifying the gangue chemical properties and municipal sludge chemical properties of the gangue powder and municipal sludge powder, establishing the leaching mechanism of the gangue powder and municipal sludge powder according to the gangue powder images, the municipal sludge powder images, the gangue chemical properties and the municipal sludge chemical properties, and analyzing the leaching parameter values ​​of the gangue powder and municipal sludge powder based on the leaching response algorithm in the leaching mechanism, wherein the leaching parameters include solid-liquid ratio, leaching time and EDTA concentration;

[0008] The gangue powder and the municipal sludge powder are leached by using the leaching module in the leaching mechanism according to the leaching parameter value to obtain leached gangue powder and leached municipal sludge powder, the leached gangue powder and the leached municipal sludge powder are mixed to obtain a mixed solid waste powder, a pyrolysis simulation is performed on the mixed solid waste powder to obtain pyrolysis simulation data, and a temperature-weight loss curve of the mixed solid waste powder is established according to the pyrolysis simulation data;

[0009] Calculating the weight loss rate of the temperature-weight loss curve, defining the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, pyrolyzing the mixed solid waste powder according to the pyrolysis parameters to obtain pyrolyzed biochar, acidifying the pyrolyzed biochar to obtain acidified biochar, calculating the pH stability coefficient of the acidified biochar, and when the pH stability coefficient meets a preset pH stability threshold, ball milling the acidified biochar to obtain a first modified biochar;

[0010] The active sites of the first modified biochar are analyzed, a plasma of the first modified biochar is constructed through the active sites, and the active sites of the first modified biochar are increased through the plasma to obtain a target biochar soil conditioner.

[0011] Optionally, based on the characteristics of the gangue raw material and the municipal sludge raw material, the gangue raw material and the municipal sludge raw material are crushed to obtain gangue powder and municipal sludge powder, comprising:

[0012] Defining the detailed requirements of the coal gangue raw materials and municipal sludge raw materials;

[0013] thermally treating the municipal sludge raw material to obtain dried municipal sludge particles;

[0014] According to the characteristics of the gangue raw material, the characteristics of the municipal sludge raw material and the refinement requirements, a multi-stage refinement environment of the gangue raw material and the dried municipal sludge particles is constructed;

[0015] Pre-crushing the gangue raw material and the dried municipal sludge particles by using the pre-crushing stage in the multi-stage fine crushing environment to obtain pre-crushed gangue particles and pre-crushed municipal sludge particles;

[0016] Using the refining stages in the multi-stage refining environment to refine the pre-crushed gangue particles and pre-crushed municipal sludge particles to obtain refined gangue particles and refined municipal sludge particles;

[0017] Calculating the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles;

[0018] When the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient simultaneously meet the preset coal gangue refinement uniformity standard and the sludge refinement uniformity standard, the refined coal gangue particles and the refined municipal sludge particles are screened using the mesh screen level in the multi-stage crushing environment to obtain the coal gangue powder and the municipal sludge powder.

[0019] Optionally, the calculating of the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles includes:

[0020] Defining the particle size range of the refined coal gangue particles and the refined municipal sludge particles;

[0021] Determining a particle size interval weight, a particle size interval shape factor, and an interval surface characteristic factor of the particle size interval;

[0022] Based on the particle size interval weight, particle size interval shape factor and interval surface characteristic factor, the following formula is used to calculate the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles:

[0023]

[0024]

[0025] in, It indicates the uniformity coefficient of coal gangue refinement. Refinement of coal gangue particles The granularity interval weight of the granularity interval, Refinement of coal gangue particles The size interval shape factor of the size interval, Refinement of coal gangue particles The surface characteristic factor of each particle size interval is Refinement of coal gangue particles The coarse particle size distribution value of the particle size interval, Refinement of coal gangue particles The median particle size distribution value of the particle size interval is Refinement of coal gangue particles The fineness distribution value of the particle size interval, It represents the sludge refinement uniformity coefficient, Represents the refinement of municipal sludge particles The granularity interval weight of the granularity interval, Represents the refinement of municipal sludge particles The size interval shape factor of the size interval, Represents the refinement of municipal sludge particles The surface characteristic factor of each particle size interval is Represents the refinement of municipal sludge particles The coarse particle size distribution value of the particle size interval, Represents the refinement of municipal sludge particles The median particle size distribution value of the particle size interval is Represents the refinement of municipal sludge particles The fineness distribution value of the particle size interval, The number of particle size intervals of refined coal gangue particles and refined municipal sludge particles.

[0026] Optionally, the establishing of the leaching mechanism of the gangue powder and the municipal sludge powder according to the gangue powder image, the municipal sludge powder image, the gangue chemical properties and the municipal sludge chemical properties comprises:

[0027] Performing image denoising on the gangue powder image and the municipal sludge powder image to obtain a denoised gangue powder image and a denoised municipal sludge powder image;

[0028] Extracting the gangue powder features and the municipal sludge powder features of the denoised gangue powder image and the denoised municipal sludge powder image;

[0029] Determining leaching parameters of the gangue powder and the municipal sludge powder according to the characteristics of the gangue powder, the characteristics of the municipal sludge powder, the chemical properties of the gangue, and the chemical properties of the municipal sludge;

[0030] Through the leaching parameters, the leaching mechanism of the coal gangue powder and the municipal sludge powder is established.

[0031] Optionally, the analyzing the leaching parameter values ​​of the gangue powder and the municipal sludge powder based on the leaching response algorithm in the leaching mechanism includes:

[0032] Constructing a parameter experimental matrix of the leaching mechanism and constructing initial leaching parameter values ​​of the parameter experimental matrix;

[0033] Collecting parameter experimental data of the parameter experimental matrix;

[0034] According to the parameter experimental data, constructing the leaching response model of the coal gangue powder and the municipal sludge powder;

[0035] Based on the leaching response model, the leaching efficiency of the coal gangue powder and the municipal sludge powder is analyzed using the leaching response algorithm in the leaching mechanism;

[0036] The initial leaching parameter value is optimized through the leaching efficiency and the leaching response model to obtain the leaching parameter values ​​of the coal gangue powder and the municipal sludge powder.

[0037] Optionally, the analyzing the leaching efficiency of the gangue powder and the municipal sludge powder based on the leaching response model and utilizing the leaching response algorithm in the leaching mechanism comprises:

[0038] Identifying leaching parameter characteristics of the coal gangue powder and the municipal sludge powder;

[0039] Based on the leaching response model and the leaching parameter characteristics, the parameter order coefficients and parameter interaction coefficients of the gangue powder and the municipal sludge powder are defined, wherein the parameter order coefficients include a parameter first order coefficient, a parameter second order coefficient, and a parameter third order coefficient;

[0040] According to the parameter order coefficient and the parameter interaction coefficient, the leaching efficiency of the gangue powder and the municipal sludge powder is analyzed using the leaching response algorithm, wherein the leaching response algorithm:

[0041]

[0042] in, Indicates the leaching efficiency of coal gangue powder and municipal sludge powder, Indicates the first leaching parameters, Indicates coal gangue powder and municipal sludge powder The linear coefficient of the leaching parameter, Indicates the first leaching parameters, Indicates coal gangue powder and municipal sludge powder The leaching parameters and The parameter interaction coefficients of the leaching parameters, Indicates coal gangue powder and municipal sludge powder The coefficient of the quadratic term of the leaching parameter, Indicates coal gangue powder and municipal sludge powder The leaching parameters and The parameter interaction coefficient of the square of the leaching parameter, Indicates coal gangue powder and municipal sludge powder The cubic coefficient of the leaching parameter, represents the error term, represents the intercept term, It indicates the number of leaching parameters corresponding to coal gangue powder and municipal sludge powder.

[0043] Optionally, establishing a temperature-weight loss curve of the mixed solid waste powder according to the pyrolysis simulation data includes:

[0044] removing outliers from the pyrolysis simulation data to obtain target pyrolysis simulation data;

[0045] Based on the target pyrolysis simulation data, constructing a pyrolysis scatter plot of the mixed solid waste powder;

[0046] Analyzing the scatter point distribution of the pyrolysis scatter point diagram, and determining the temperature-weight loss relationship model of the mixed solid waste powder through the scatter point distribution;

[0047] According to the thermal decomposition scatter plot, fitting the initial temperature-weight loss curve of the mixed solid waste powder using the temperature-weight loss relationship model;

[0048] Calculating the curve goodness of the initial temperature-weight loss curve;

[0049] When the curve goodness meets a preset curve goodness threshold, the initial temperature-weight loss curve is used as the temperature-weight loss curve of the mixed solid waste powder.

[0050] Optionally, calculating the weight loss rate of the temperature-weight loss curve comprises:

[0051] marking the weight loss data points of the temperature-weight loss curve;

[0052] Defining the smoothing window size and polynomial order of the temperature-weight loss curve;

[0053] Based on the smoothing window size and the polynomial order, the weight loss data points are smoothed using the following formula to obtain smoothed weight loss data points:

[0054]

[0055] in, represents the smoothed weightless data points, represents Gaussian weight, Indicates Polynomial of degree, represents half of the smoothing window size, Indicates Weightlessness data point The value of the polynomial fit, represents a weightlessness data point;

[0056] The weight loss rate of the temperature-weight loss curve is calculated based on the smoothed weight loss data points.

[0057] Optionally, the calculating the pH stability coefficient of the acidified biochar comprises:

[0058] washing the acidified biochar with water to obtain water-washed acidified biochar;

[0059] Recording the pH value of the water-washed acidified biochar;

[0060] According to the pH value, constructing a pH titration curve of the acidified biochar;

[0061] Analyzing the fluctuation value of the pH titration curve;

[0062] The pH stability coefficient of the acidified biochar is calculated using the fluctuation value.

[0063] Optionally, the analyzing the active sites of the first modified biochar comprises:

[0064] Pretreating the first modified biochar to obtain pretreated modified biochar;

[0065] Adsorbing the pretreated modified biochar to obtain adsorbed modified biochar;

[0066] Desorbing the adsorbed modified biochar to obtain desorbed modified biochar, and recording desorption data of the desorbed modified biochar;

[0067] Based on the desorption data, constructing a desorption curve of the desorbed modified biochar;

[0068] extracting desorption peak characteristics of the desorption curve;

[0069] The active sites of the first modified biochar are determined by the desorption peak characteristics.

[0070] Compared with the problems described in the background technology, the present invention obtains coal gangue raw materials and municipal sludge raw materials, identifies the coal gangue raw material characteristics and municipal sludge raw material characteristics of the coal gangue raw materials and municipal sludge raw materials to provide a basis for subsequent raw material processing. Furthermore, based on the characteristics of the coal gangue raw materials and municipal sludge raw materials, the present invention crushes the coal gangue raw materials and municipal sludge raw materials to obtain coal gangue powder and municipal sludge powder. The raw materials can be fully refined through multi-stage operations, thereby improving the efficiency of later biochar synthesis. Furthermore, the present invention It is clear that according to the coal gangue powder image and the municipal sludge powder image, the leaching mechanism of the coal gangue powder and the municipal sludge powder is established to establish an efficient and environmentally friendly leaching mechanism for treating coal gangue powder and municipal sludge powder to achieve the dual goals of resource utilization and environmental protection. Next, the present invention analyzes the leaching parameter values ​​of the coal gangue powder and the municipal sludge powder based on the leaching response algorithm in the leaching mechanism to optimize the leaching process of the coal gangue powder and the municipal sludge powder, thereby improving the powder quality. In detail, the present invention analyzes the leaching parameter values ​​of the coal gangue powder and the municipal sludge powder based on the leaching response algorithm in the leaching mechanism to optimize the leaching process of the coal gangue powder and the municipal sludge powder, thereby improving the powder quality. The mixed solid waste powder is subjected to pyrolysis simulation to obtain pyrolysis simulation data. According to the pyrolysis simulation data, the temperature-weight loss curve of the mixed solid waste powder is established, which can provide a basis for the later pyrolysis of the mixed solid waste powder. Further, the present invention defines the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, effectively defines the pyrolysis parameters of the mixed solid waste powder, and provides guidance for the actual pyrolysis process, thereby improving the pyrolysis effect of the mixed solid waste powder. Further, the present invention acidifies the pyrolysis biochar to obtain acidified biochar, which can remove part of the inorganic minerals and metal oxides in the pyrolysis biochar, thereby increasing the pore structure of the biochar and increasing its specific surface area, thereby helping to improve the adsorption performance of the biochar. Finally, the present invention constructs the plasma of the first modified biochar through the active site, which can improve the performance of its active site, enhance the adsorption potential, and increase the active site of the first modified biochar through the plasma to obtain the target biochar soil conditioner. The performance of the biochar is optimized through plasma modification, making it a more effective soil conditioner. Therefore, the present invention can improve the improvement effect of biochar on soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 A schematic flow chart of a method for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner provided in one embodiment of the present invention;

[0072] Figure 2 A functional module diagram of a system for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner provided by an embodiment of the present invention;

[0073] Figure 3A schematic diagram of the structure of an electronic device of a system for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner provided by an embodiment of the present invention;

[0074] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0075] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0076] The embodiment of the present application provides a method for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner. The execution subject of the method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided in the embodiment of the present application. In other words, the method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner can be executed by software or hardware installed on a terminal device or a server device. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0077] Embodiment 1:

[0078] Reference Figure 1 FIG. 1 is a flow chart of a method for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner according to an embodiment of the present invention. In this embodiment, the method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner comprises:

[0079] S1. Obtain coal gangue raw materials and municipal sludge raw materials, identify the coal gangue raw material characteristics and municipal sludge raw material characteristics of the coal gangue raw materials and municipal sludge raw materials, and based on the coal gangue raw material characteristics and municipal sludge raw material characteristics, crush the coal gangue raw materials and municipal sludge raw materials to obtain coal gangue powder and municipal sludge powder.

[0080] The present invention obtains gangue raw materials and municipal sludge raw materials, identifies the gangue raw material characteristics and municipal sludge raw material characteristics of the gangue raw materials and municipal sludge raw materials, and provides a basis for subsequent raw material processing. Among them, the gangue raw materials refer to the main by-products in the process of coal mining and washing, the municipal sludge raw materials refer to the products after urban sewage treatment, the gangue raw material characteristics refer to the physical, chemical and mineralogical characteristics of gangue as an industrial solid waste, such as chemical composition, physical properties and other characteristics, and the municipal sludge raw material characteristics refer to the characteristics of municipal sludge as a solid waste in terms of source, composition, physical and chemical properties and environmental hazards, such as source, chemical composition, physical properties and other characteristics.

[0081] Based on the characteristics of the coal gangue raw material and the municipal sludge raw material, the present invention crushes the coal gangue raw material and the municipal sludge raw material to obtain coal gangue powder and municipal sludge powder. The raw materials can be fully refined through multi-stage operation, thereby improving the efficiency of later biochar synthesis.

[0082] In detail, based on the characteristics of the coal gangue raw material and the municipal sludge raw material, the coal gangue raw material and the municipal sludge raw material are crushed to obtain coal gangue powder and municipal sludge powder, including:

[0083] Defining the detailed requirements of the coal gangue raw materials and municipal sludge raw materials;

[0084] thermally treating the municipal sludge raw material to obtain dried municipal sludge particles;

[0085] According to the characteristics of the gangue raw material, the characteristics of the municipal sludge raw material and the refinement requirements, a multi-stage refinement environment of the gangue raw material and the dried municipal sludge particles is constructed;

[0086] Pre-crushing the gangue raw material and the dried municipal sludge particles by using the pre-crushing stage in the multi-stage fine crushing environment to obtain pre-crushed gangue particles and pre-crushed municipal sludge particles;

[0087] Using the refining stages in the multi-stage refining environment to refine the pre-crushed gangue particles and pre-crushed municipal sludge particles to obtain refined gangue particles and refined municipal sludge particles;

[0088] Calculating the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles;

[0089] When the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient simultaneously meet the preset coal gangue refinement uniformity standard and the sludge refinement uniformity standard, the refined coal gangue particles and the refined municipal sludge particles are screened using the mesh screen level in the multi-stage crushing environment to obtain the coal gangue powder and the municipal sludge powder.

[0090] Among them, the refinement requirements refer to the specific technical parameters and goals for the fine crushing of coal gangue and municipal sludge raw materials according to the application requirements of the final product. This includes indicators such as particle size, particle size distribution, shape, purity, surface area, etc. The dried municipal sludge particles refer to municipal sludge after heat treatment to remove most of the water to form granular substances with a certain particle size. The multi-stage fine crushing environment refers to a system containing different fine crushing stages. The pre-crushing stage refers to the first stage in the multi-stage fine crushing environment, using coarse crushing equipment to crush the raw materials into larger particles. The pre-crushed coal gangue particles refer to coal gangue particles after the pre-crushing stage. The pre-crushed municipal sludge particles refer to municipal sludge particles after the pre-crushing stage. The refinement stage refers to the subsequent stage in the multi-stage fine crushing environment, using fine crushing equipment to further crush the pre-crushed particles into smaller particles. The refined coal gangue particles refer to coal gangue particles after the refinement stage. The refined municipal sludge particles refer to Mud particles refer to municipal sludge particles after the refining stage treatment, the coal gangue refining uniformity coefficient refers to an indicator for measuring the uniformity of the particle size distribution of the refined coal gangue particles, the sludge refining uniformity coefficient refers to an indicator for measuring the uniformity of the particle size distribution of the refined municipal sludge particles, the coal gangue refining uniformity standard refers to the preset standard for the uniformity of the particle size distribution of the refined coal gangue particles, the sludge refining uniformity standard refers to the preset standard for the uniformity of the particle size distribution of the refined municipal sludge particles, the mesh sieve stage refers to a stage in a multi-stage refining environment, using sieves of different mesh numbers to screen the particles to separate particles that meet the particle size requirements, the coal gangue powder refers to fine coal gangue particles that meet the particle size requirements after being screened at the mesh sieve stage, and the municipal sludge powder refers to fine municipal sludge particles that meet the particle size requirements after being screened at the mesh sieve stage.

[0091] Optionally, when the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient meet the preset coal gangue refinement uniformity standard and the sludge refinement uniformity standard at the same time, the mesh screen level in the multi-stage crushing environment is used to screen the refined coal gangue particles and the refined municipal sludge particles, and the refinement uniformity coefficient in the coal gangue powder and the municipal sludge powder is an important quality control parameter in the screening process. Only when the refinement uniformity coefficient meets the coal gangue refinement uniformity standard can the refined particles be guaranteed to have the required physical and chemical properties. If the refinement uniformity coefficient does not meet the coal gangue refinement uniformity standard, it may be necessary to adjust the parameters in the multi-stage crushing environment (such as rotation speed, pressure, screen size, etc.) and re-refine until the uniformity coefficient requirements are met.

[0092] Optionally, the mesh screen levels in the multi-stage crushing environment are used to screen the refined coal gangue particles and the refined municipal sludge particles, and the obtained coal gangue powder and municipal sludge powder are selected to be screened through a 100-mesh sieve.

[0093] Furthermore, the calculation of the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles includes:

[0094] Defining the particle size range of the refined coal gangue particles and the refined municipal sludge particles;

[0095] Determining a particle size interval weight, a particle size interval shape factor, and an interval surface characteristic factor of the particle size interval;

[0096] Based on the particle size interval weight, particle size interval shape factor and interval surface characteristic factor, the following formula is used to calculate the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles:

[0097]

[0098]

[0099] in, It indicates the uniformity coefficient of coal gangue refinement. Refinement of coal gangue particles The granularity interval weight of the granularity interval, Refinement of coal gangue particles The size interval shape factor of the size interval, Refinement of coal gangue particles The surface characteristic factor of each particle size interval is Refinement of coal gangue particles The coarse particle size distribution value of the particle size interval, Refinement of coal gangue particles The median particle size distribution value of the particle size interval is Refinement of coal gangue particles The fineness distribution value of the particle size interval, It represents the sludge refinement uniformity coefficient, Represents the refinement of municipal sludge particles The granularity interval weight of the granularity interval, Represents the refinement of municipal sludge particles The size interval shape factor of the size interval, Represents the refinement of municipal sludge particles The surface characteristic factor of each particle size interval is Represents the refinement of municipal sludge particles The coarse particle size distribution value of the particle size interval, Represents the refinement of municipal sludge particles The median particle size distribution value of the particle size interval is Represents the refinement of municipal sludge particles The fineness distribution value of the particle size interval, The number of particle size intervals of refined coal gangue particles and refined municipal sludge particles.

[0100] Among them, the particle size interval refers to dividing the particulate material into different ranges according to the particle size, the particle size interval weight refers to the proportion or importance of each particle size interval in the entire material, the particle size interval shape factor refers to an indicator used to describe the shape characteristics of particles in a specific particle size interval, the interval surface characteristic factor refers to the description of the surface characteristics of particles in a specific particle size interval, such as surface roughness, porosity or specific surface area, the coarse particle size distribution value refers to the particle size value on the particle size distribution curve, where particles smaller than this particle size account for 60% of the total mass, the medium particle size distribution value refers to the particle size value on the particle size distribution curve, where particles smaller than this particle size account for 30% of the total mass, the fine particle size distribution value refers to the particle size value on the particle size distribution curve, where particles smaller than this particle size account for 10% of the total mass, and the number of particle size intervals refers to the total number of particle size intervals into which the material particle size distribution is divided.

[0101] S2. Collecting the gangue powder images and municipal sludge powder images of the gangue powder and municipal sludge powder, identifying the gangue chemical properties and municipal sludge chemical properties of the gangue powder and municipal sludge powder, establishing the leaching mechanism of the gangue powder and municipal sludge powder according to the gangue powder image, the municipal sludge powder image, the gangue chemical properties and the municipal sludge chemical properties, and analyzing the leaching parameter values ​​of the gangue powder and municipal sludge powder based on the leaching response algorithm in the leaching mechanism, wherein the leaching parameters include solid-liquid ratio, leaching time and EDTA concentration.

[0102] It should be explained that the gangue powder image and the municipal sludge powder image refer to the images of gangue powder and municipal sludge powder collected by the camera, and the gangue powder image and the municipal sludge powder image provide a basis for the subsequent leaching design.

[0103] The present invention establishes a leaching mechanism for the gangue powder and the municipal sludge powder based on the gangue powder image, the municipal sludge powder image, the gangue chemical properties and the municipal sludge chemical properties. An efficient and environmentally friendly leaching mechanism can be established for processing gangue powder and municipal sludge powder to achieve the dual goals of resource utilization and environmental protection.

[0104] In detail, the establishing of the leaching mechanism of the gangue powder and the municipal sludge powder according to the gangue powder image, the municipal sludge powder image, the gangue chemical properties and the municipal sludge chemical properties includes:

[0105] Performing image denoising on the gangue powder image and the municipal sludge powder image to obtain a denoised gangue powder image and a denoised municipal sludge powder image;

[0106] Extracting the gangue powder features and the municipal sludge powder features of the denoised gangue powder image and the denoised municipal sludge powder image;

[0107] Determining leaching parameters of the gangue powder and the municipal sludge powder according to the characteristics of the gangue powder, the characteristics of the municipal sludge powder, the chemical properties of the gangue, and the chemical properties of the municipal sludge;

[0108] Through the leaching parameters, the leaching mechanism of the coal gangue powder and the municipal sludge powder is established.

[0109] The denoised gangue powder image refers to an image obtained by removing noise from the gangue powder image through image processing techniques such as filtering and sharpening, so as to more clearly analyze its particle size and morphological characteristics. The denoised municipal sludge powder image refers to a municipal sludge powder image that has been processed by noise elimination. The gangue powder feature refers to a series of characteristics extracted from the denoised gangue powder image, such as particle size distribution, shape, surface texture, chemical composition, etc. The municipal sludge powder feature refers to a series of characteristics extracted from the denoised municipal sludge powder image. The chemical properties of the gangue chemical properties and the municipal sludge chemical properties include elemental composition, elemental composition, organic content, heavy metal content, pH value and other properties. The leaching parameters refer to the parameters for leaching the gangue powder and the municipal sludge powder; the leaching mechanism refers to a mechanism for controlling the leaching parameters of the gangue powder and the municipal sludge powder, which is a technology for extracting valuable components from gangue and municipal sludge or improving their environmental properties.

[0110] Optionally, the image denoising of the gangue powder image and the municipal sludge powder image to obtain the denoised gangue powder image and the denoised municipal sludge powder image can be achieved by image processing technology (such as wavelet transform and non-local mean denoising).

[0111] Optionally, the leaching parameters of the coal gangue powder and the municipal sludge powder are determined according to the characteristics of the coal gangue powder and the municipal sludge powder, including defining a characteristic-leaching efficiency relationship between the coal gangue powder characteristics and the municipal sludge powder characteristics according to the characteristics of the coal gangue powder and the municipal sludge powder, and defining the leaching behavior under different conditions through the characteristic-leaching efficiency relationship model, and determining the leaching parameters of the coal gangue powder and the municipal sludge powder according to the leaching behavior.

[0112] The characteristic-leaching efficiency relationship model refers to the relationship between the characteristics of the powder (such as particle size, shape, pore structure, color, etc.) and the leaching efficiency (usually the removal rate of pollutants), and the leaching behavior under different conditions refers to how the leaching efficiency of coal gangue powder and municipal sludge powder changes under changing environmental and operating conditions. These conditions may include parameters such as leaching time, solid-liquid ratio, EDTA concentration, etc.

[0113] The present invention analyzes the leaching parameter values ​​of the gangue powder and the municipal sludge powder based on the leaching response algorithm in the leaching mechanism, and can optimize the leaching process of the gangue powder and the municipal sludge powder, thereby improving the powder quality.

[0114] In detail, the leaching response algorithm based on the leaching mechanism analyzes the leaching parameter values ​​of the gangue powder and the municipal sludge powder, including:

[0115] Constructing a parameter experimental matrix of the leaching mechanism and constructing initial leaching parameter values ​​of the parameter experimental matrix;

[0116] Collecting parameter experimental data of the parameter experimental matrix;

[0117] According to the parameter experimental data, constructing the leaching response model of the coal gangue powder and the municipal sludge powder;

[0118] Based on the leaching response model, the leaching efficiency of the coal gangue powder and the municipal sludge powder is analyzed using the leaching response algorithm in the leaching mechanism;

[0119] The initial leaching parameter value is optimized through the leaching efficiency and the leaching response model to obtain the leaching parameter values ​​of the coal gangue powder and the municipal sludge powder.

[0120] The parameter experiment matrix refers to a matrix that lists the value ranges of different parameters and the combinations of various parameters. The initial leaching parameter values ​​refer to the fixed parameters set in the initial stage of the leaching experiment, such as solid-liquid ratio, leaching time and EDTA concentration. The parameter experiment data refer to the values ​​of various parameters and the corresponding leaching efficiency data collected during the experiment. The leaching response model refers to a model used to describe the relationship between leaching parameters (such as solid-liquid ratio, leaching time, EDTA concentration, etc.) and leaching efficiency. The leaching response algorithm is used to analyze the influence of multiple factors (such as solid-liquid ratio, leaching time, EDTA concentration, etc.) on the leaching efficiency. ), the leaching efficiency refers to the parameter used to evaluate the performance and efficiency of leaching, the leaching parameter refers to the parameter value of the optimal leaching efficiency of coal gangue powder and municipal sludge powder finally determined, the leaching parameter value includes solid-liquid ratio, leaching time and EDTA concentration, wherein the solid-liquid ratio refers to the ratio between the mass of the coal gangue powder and municipal sludge powder and the volume of the leaching liquid during the leaching process, in g / ml, the leaching time refers to the length of time the leaching process lasts, and the EDTA concentration refers to the concentration of EDTA (a commonly used chelating agent) in the leaching liquid.

[0121] Furthermore, the leaching response model of the coal gangue powder and the municipal sludge powder is constructed according to the parameter experimental data, including:

[0122] Analyzing the leaching response data of the coal gangue powder and the municipal sludge powder according to the parameter experimental data;

[0123] Establishing, by means of the leaching response data, a leaching response-parameter diagram of the coal gangue powder and the municipal sludge powder;

[0124] Analyzing the distribution characteristics of the leaching response-parameter diagram;

[0125] Based on the distribution characteristics, the leaching response models of the coal gangue powder and municipal sludge powder are defined.

[0126] The leaching response data refers to the specific numerical values ​​obtained through experimental measurement, which specifically reflect the pollutant removal effect of coal gangue powder and municipal sludge powder during the leaching process. These data are usually quantitative results, such as the concentration (mg / L) of pollutants, removal rate (%), etc. The leaching response-parameter diagram refers to a diagram showing the relationship between the leaching response data numbers and one or more parameters (such as solid-liquid ratio, leaching time, EDTA concentration) that change in the experiment. The distribution characteristics refer to the distribution pattern or trend of the leaching response data numbers in the leaching response-parameter diagram. The leaching response model refers to a model that describes the relationship between the leaching response data numbers and the leaching parameters.

[0127] Furthermore, based on the leaching response model, the leaching efficiency of the gangue powder and the municipal sludge powder is analyzed using the leaching response algorithm in the leaching mechanism, including:

[0128] Identifying leaching parameter characteristics of the coal gangue powder and the municipal sludge powder;

[0129] Based on the leaching response model and the leaching parameter characteristics, the parameter order coefficients and parameter interaction coefficients of the gangue powder and the municipal sludge powder are defined, wherein the parameter order coefficients include a parameter first order coefficient, a parameter second order coefficient, and a parameter third order coefficient;

[0130] According to the parameter order coefficient and the parameter interaction coefficient, the leaching efficiency of the gangue powder and the municipal sludge powder is analyzed using the leaching response algorithm, wherein the leaching response algorithm:

[0131]

[0132] in, Indicates the leaching efficiency of coal gangue powder and municipal sludge powder, Indicates the first leaching parameters, Indicates coal gangue powder and municipal sludge powder The linear coefficient of the leaching parameter, Indicates the first leaching parameters, Indicates coal gangue powder and municipal sludge powder The leaching parameters and The parameter interaction coefficients of the leaching parameters, Indicates coal gangue powder and municipal sludge powder The coefficient of the quadratic term of the leaching parameter, Indicates coal gangue powder and municipal sludge powder The leaching parameters and The parameter interaction coefficient of the square of the leaching parameter, Indicates coal gangue powder and municipal sludge powder The cubic coefficient of the leaching parameter, represents the error term, represents the intercept term, It indicates the number of leaching parameters corresponding to coal gangue powder and municipal sludge powder.

[0133] Among them, the leaching parameter characteristics refer to the specific behaviors and influences of various leaching parameters (such as pH value, temperature, leaching time, etc.) of coal gangue powder and municipal sludge powder during the leaching process. The first-order coefficient of the parameter refers to the expected change in leaching efficiency when the parameter changes by one unit. The second-order coefficient of the parameter refers to the nonlinear change of leaching efficiency when the value of the parameter increases. The third-order coefficient of the parameter refers to the high-order nonlinear change of leaching efficiency when the value of the parameter increases. The parameter interaction coefficient refers to the joint influence of these two parameters on the leaching efficiency when they change at the same time. The intercept term refers to the expected value of the leaching efficiency when all leaching parameters are zero. The error term refers to the difference between the leaching efficiency predicted by the model and the actually observed leaching efficiency.

[0134] S3. Leach the gangue powder and the municipal sludge powder using the leaching module in the leaching mechanism according to the leaching parameter value to obtain leached gangue powder and leached municipal sludge powder, mix the leached gangue powder and the leached municipal sludge powder to obtain a mixed solid waste powder, perform pyrolysis simulation on the mixed solid waste powder to obtain pyrolysis simulation data, and establish a temperature-weight loss curve of the mixed solid waste powder according to the pyrolysis simulation data.

[0135] It should be explained that the leached gangue powder refers to the gangue powder treated by the leaching mechanism, the leached municipal sludge powder refers to the municipal sludge powder treated by the leaching mechanism, and the mixed solid waste powder refers to the solid waste powder obtained by mixing the leached gangue powder and the leached municipal sludge powder in a one-to-one ratio.

[0136] The present invention performs pyrolysis simulation on the mixed solid waste powder to obtain pyrolysis simulation data. According to the pyrolysis simulation data, a temperature-weight loss curve of the mixed solid waste powder is established to provide a basis for the subsequent pyrolysis of the mixed solid waste powder. The pyrolysis simulation data refers to the numerical results obtained by simulating the pyrolysis process of the mixed solid waste powder, which usually includes a series of temperature points and the weight loss or weight loss percentage corresponding to each temperature point. In detail, the pyrolysis simulation data is collected by a thermogravimetric analyzer (TGA).

[0137] In detail, establishing the temperature-weight loss curve of the mixed solid waste powder according to the pyrolysis simulation data includes:

[0138] removing outliers from the pyrolysis simulation data to obtain target pyrolysis simulation data;

[0139] Based on the target pyrolysis simulation data, constructing a pyrolysis scatter plot of the mixed solid waste powder;

[0140] Analyzing the scatter point distribution of the pyrolysis scatter point diagram, and determining the temperature-weight loss relationship model of the mixed solid waste powder through the scatter point distribution;

[0141] According to the thermal decomposition scatter plot, fitting the initial temperature-weight loss curve of the mixed solid waste powder using the temperature-weight loss relationship model;

[0142] Calculating the curve goodness of the initial temperature-weight loss curve;

[0143] When the curve goodness meets a preset curve goodness threshold, the initial temperature-weight loss curve is used as the temperature-weight loss curve of the mixed solid waste powder.

[0144] Among them, the target pyrolysis simulation data refers to the pyrolysis simulation data after the outliers are removed, the pyrolysis scatter plot refers to a chart used to intuitively display the relationship between temperature and weight loss during the pyrolysis process, wherein the horizontal axis represents temperature and the vertical axis represents the weight loss percentage, the scatter distribution refers to the distribution of data points in the pyrolysis scatter plot, including the density of the points, trends, and whether there are obvious clusters or outliers, the temperature-weight loss relationship model refers to a relationship model used to describe the relationship between temperature and weight loss of mixed solid waste powder during the pyrolysis process, the initial temperature-weight loss curve refers to a curve obtained by preliminary fitting based on the temperature-weight loss relationship model, which is used to represent the preliminary estimate of the relationship between temperature and weight loss of mixed solid waste powder during the pyrolysis process, the curve goodness refers to a parameter used to measure the degree of fit of the fitting curve to the actual data points, the curve goodness threshold refers to a preset standard for judging whether the goodness of the fitting curve is good enough, and the temperature-weight loss curve refers to the final curve used to describe the relationship between temperature and weight loss of mixed solid waste powder during the entire pyrolysis process.

[0145] Optionally, the calculation of the curve goodness of the initial temperature-weight loss curve can be achieved by calculating the coefficient of determination (R²), mean square error (MSE) and the like of the fitting curve.

[0146] S4. Calculate the weight loss rate of the temperature-weight loss curve, define the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, and pyrolyze the mixed solid waste powder according to the pyrolysis parameters to obtain pyrolyzed biochar, acidify the pyrolyzed biochar to obtain acidified biochar, calculate the pH stability coefficient of the acidified biochar, and when the pH stability coefficient meets the preset pH stability threshold, ball mill the acidified biochar to obtain a first modified biochar.

[0147] The present invention can provide a basis for analyzing the pyrolysis process by calculating the weight loss rate of the temperature-weight loss curve, thereby improving the pyrolysis effect of the mixed solid waste powder.

[0148] In detail, the calculating the weight loss rate of the temperature-weight loss curve comprises:

[0149] marking the weight loss data points of the temperature-weight loss curve;

[0150] Defining the smoothing window size and polynomial order of the temperature-weight loss curve;

[0151] Based on the smoothing window size and the polynomial order, the weight loss data points are smoothed using the following formula to obtain smoothed weight loss data points:

[0152]

[0153] in, represents the smoothed weightless data points, represents Gaussian weight, Indicates Polynomial of degree, represents half of the smoothing window size, Indicates Weightlessness data point The value of the polynomial fit, represents a weightlessness data point;

[0154] The weight loss rate of the temperature-weight loss curve is calculated based on the smoothed weight loss data points.

[0155] Among them, the weight loss data point refers to the weight loss value corresponding to each temperature point on the temperature-weight loss curve, the smoothing window size refers to the number of data points contained in the window used in the smoothing process, the polynomial order refers to the order of the polynomial used to fit the data in the smoothing process, the smoothed weight loss data point refers to the data point obtained by applying a smoothing algorithm (such as a Savitzky-Golay filter or a Gaussian filter) to the original weight loss data point, the Gaussian weight refers to the weight value given by the Gaussian function used in the Gaussian filter, and the weight loss rate refers to the rate at which weight loss changes with temperature.

[0156] Optionally, the weight loss rate of the temperature-weight loss curve is calculated based on the smoothed weight loss data points by numerically derivatizing the smoothed weight loss data points.

[0157] The present invention defines the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, effectively defines the pyrolysis parameters of the mixed solid waste powder, provides guidance for the actual pyrolysis process, and thus improves the pyrolysis effect of the mixed solid waste powder. Wherein, the pyrolysis parameters include pyrolysis temperature, time, heating rate and other parameters. In detail, the pyrolysis parameters determine the different stages of the pyrolysis process, such as drying, pre-pyrolysis, main pyrolysis and carbonization steps, through the change of the weight loss rate. Exemplarily, the pyrolysis starting temperature: select the temperature point where the weight loss rate begins to increase significantly. Main pyrolysis interval: determine the temperature range with the maximum weight loss rate. Pyrolysis end temperature: select the temperature point where the weight loss rate tends to be stable.

[0158] It should be explained that the pyrolysis biochar refers to the solid waste powder obtained by pyrolyzing the mixed solid waste powder.

[0159] The present invention acidifies the pyrolytic biochar to obtain acidified biochar, which can remove some inorganic minerals and metal oxides in the pyrolytic biochar, thereby increasing the pore structure of the biochar and increasing its specific surface area, thereby helping to improve the adsorption performance of the biochar. In detail, the acidification of the pyrolytic biochar includes placing the pyrolytic biochar and concentrated nitric acid in an acidification vessel at a solid-liquid ratio of 2:30, placing it in an ultrasonicator for ultrasonication for 30 minutes, stirring it with a constant temperature magnetic stirrer at room temperature for 2 hours, and filtering it after standing for 1 hour to obtain the acidified biochar.

[0160] The present invention can determine whether the acidified pollutants in the biochar are cleaned by calculating the pH stability coefficient of the acidified biochar, wherein the pH stability coefficient refers to the degree of change in the pH value of the acidified biochar during repeated cleaning.

[0161] In detail, the calculation of the pH stability coefficient of the acidified biochar includes:

[0162] washing the acidified biochar with water to obtain water-washed acidified biochar;

[0163] Recording the pH value of the water-washed acidified biochar;

[0164] According to the pH value, constructing a pH titration curve of the acidified biochar;

[0165] Analyzing the fluctuation value of the pH titration curve;

[0166] The pH stability coefficient of the acidified biochar is calculated using the fluctuation value.

[0167] Among them, the water-washed acidified biochar refers to the acidified biochar washed with clean water at the same time, the pH value refers to the pH measurement value of the acidified biochar after each washing with clean water, the pH titration curve refers to the relationship curve between the number of acidified biochar washing times and the pH value, and the fluctuation value refers to the degree of fluctuation of the pH titration curve.

[0168] Optionally, in the present invention, when the pH stability coefficient meets the preset pH stability threshold, the acidified biochar is ball-milled to obtain the first modified biochar, which can destroy the large particle structure of the biochar and make it smaller, thereby significantly increasing the specific surface area and improving the adsorption performance. Among them, the pH stability threshold refers to the threshold used to evaluate whether the pH change of the acidified biochar is stable, and the first modified biochar refers to the biochar that has been modified by ball milling. In detail, the ball milling of the acidified biochar includes placing the dried acidified biochar in a ball mill and ball milling it, and passing it through a 200-mesh sieve to obtain it.

[0169] S5. Analyze the active sites of the first modified biochar, construct a plasma of the first modified biochar through the active sites, increase the active sites of the first modified biochar through the plasma, and obtain a target biochar soil conditioner.

[0170] The present invention provides data basis for understanding the catalytic performance and surface chemical properties of the first modified biochar by analyzing the active sites of the first modified biochar.

[0171] In detail, the analyzing the active sites of the first modified biochar comprises:

[0172] Pretreating the first modified biochar to obtain pretreated modified biochar;

[0173] Adsorbing the pretreated modified biochar to obtain adsorbed modified biochar;

[0174] Desorbing the adsorbed modified biochar to obtain desorbed modified biochar, and recording desorption data of the desorbed modified biochar;

[0175] Based on the desorption data, constructing a desorption curve of the desorbed modified biochar;

[0176] extracting desorption peak characteristics of the desorption curve;

[0177] The active sites of the first modified biochar are determined by the desorption peak characteristics.

[0178] Among them, the pretreated modified biochar refers to modified biochar that has undergone a series of physical or chemical treatment steps, and the pretreatment includes heating, activation, washing, drying and other operations. The adsorbed modified biochar refers to modified biochar that can adsorb specific molecules (such as solutes in gas or liquid) after pretreatment. The desorbed modified biochar refers to the process in which the modified biochar that has adsorbed specific molecules releases the adsorbate under specific conditions (such as heating, reducing pressure or changing the atmosphere). The desorption data refers to a series of data recorded during the desorption process, including but not limited to desorption time, temperature, pressure, adsorbate concentration and other data. The desorption curve refers to a curve showing the change in adsorbate concentration with increasing temperature or time during the desorption process. The desorption peak feature refers to the properties of a specific peak appearing on the desorption curve, including the position of the peak (corresponding to the desorption temperature or time), the area of ​​the peak (representing the amount of desorbed substance), the shape of the peak (reflecting the kinetics of the desorption process), etc. The active site refers to a specific position on the surface of biochar that can participate in chemical reactions.

[0179] In detail, the medium for adsorbing and desorbing the pretreated modified biochar may be a salt solution.

[0180] In detail, the determination of the active sites of the first modified biochar can be performed by plotting a desorption curve between a salt solution and a pollutant concentration through desorption data, and analyzing the desorption peaks of the desorption curve, which usually correspond to different types of active sites. Exemplarily, the position of the desorption peak corresponding to the desorption peak characteristic is related to a specific type of active site, for example, different chemical functional groups may desorb at different temperatures or conditions; the peak area corresponding to the desorption peak characteristic can indirectly reflect the number of active sites, that is, the larger the peak area, the more substances adsorbed and the richer the active sites; the peak shape (such as symmetry and sharpness) corresponding to the desorption peak characteristic can provide information about the uniformity of the active sites, and a sharp peak may indicate that the active sites are relatively uniform.

[0181] Optionally, the desorption of the adsorbed modified biochar to obtain desorbed modified biochar and the recording of desorption data of the desorbed modified biochar can be monitored by a mass spectrometer, an infrared spectrometer or other detectors.

[0182] The present invention constructs the plasma of the first modified biochar through the active sites to improve the performance of the active sites and enhance the adsorption potential. In detail, the plasma refers to an ionized gas composed of charged particles (such as electrons and ions). The plasma can be generated by a plasma generator.

[0183] Finally, the present invention increases the active sites of the first modified biochar by the plasma to obtain the target biochar soil conditioner. The performance of the biochar is optimized by plasma modification, making it a more effective soil conditioner. Among them, the target biochar soil conditioner refers to a biochar product that has been modified by plasma to enhance its soil improvement properties. In detail, the increase of active sites of the first modified biochar by the plasma can be achieved by the interaction between high-energy electrons and active particles in the plasma and the surface of the biochar.

[0184] Compared with the problems described in the background technology, the present invention obtains coal gangue raw materials and municipal sludge raw materials, identifies the coal gangue raw material characteristics and municipal sludge raw material characteristics of the coal gangue raw materials and municipal sludge raw materials to provide a basis for subsequent raw material processing. Furthermore, based on the characteristics of the coal gangue raw materials and municipal sludge raw materials, the present invention crushes the coal gangue raw materials and municipal sludge raw materials to obtain coal gangue powder and municipal sludge powder. The raw materials can be fully refined through multi-stage operations, thereby improving the efficiency of later biochar synthesis. Furthermore, the present invention It is clear that according to the coal gangue powder image and the municipal sludge powder image, the leaching mechanism of the coal gangue powder and the municipal sludge powder is established to establish an efficient and environmentally friendly leaching mechanism for treating coal gangue powder and municipal sludge powder to achieve the dual goals of resource utilization and environmental protection. Next, the present invention analyzes the leaching parameter values ​​of the coal gangue powder and the municipal sludge powder based on the leaching response algorithm in the leaching mechanism to optimize the leaching process of the coal gangue powder and the municipal sludge powder, thereby improving the powder quality. In detail, the present invention analyzes the leaching response algorithm in the leaching mechanism to optimize the leaching process of the coal gangue powder and the municipal sludge powder, thereby improving the powder quality. The mixed solid waste powder is subjected to pyrolysis simulation to obtain pyrolysis simulation data. According to the pyrolysis simulation data, the temperature-weight loss curve of the mixed solid waste powder is established, which can provide a basis for the later pyrolysis of the mixed solid waste powder. Further, the present invention defines the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, effectively defines the pyrolysis parameters of the mixed solid waste powder, and provides guidance for the actual pyrolysis process, thereby improving the pyrolysis effect of the mixed solid waste powder. Further, the present invention acidifies the pyrolysis biochar to obtain acidified biochar, which can remove part of the inorganic minerals and metal oxides in the pyrolysis biochar, thereby increasing the pore structure of the biochar and increasing its specific surface area, thereby helping to improve the adsorption performance of the biochar. Finally, the present invention constructs the plasma of the first modified biochar through the active site, which can improve the performance of its active site, enhance the adsorption potential, and increase the active site of the first modified biochar through the plasma to obtain the target biochar soil conditioner. The performance of the biochar is optimized through plasma modification, making it a more effective soil conditioner. Therefore, the present invention can improve the improvement effect of biochar on soil.

[0185] Embodiment 2:

[0186] like Figure 2 , which is a functional module diagram of a system for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner provided by an embodiment of the present invention.

[0187] The modified gangue-municipal sludge-based biochar soil conditioner preparation system 200 of the present invention can be installed in an electronic device. According to the functions to be implemented, the modified gangue-municipal sludge-based biochar soil conditioner preparation system 200 can include a raw material crushing module 201, a leaching parameter value determination module 202, a temperature-weight loss curve construction module 203, a biochar modification module 204 and a soil conditioner construction module 205. The module of the present invention can also be called a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0188] In this embodiment, the functions of each module / unit are as follows:

[0189] The raw material crushing module 201 is used to obtain coal gangue raw materials and municipal sludge raw materials, identify the coal gangue raw material characteristics and municipal sludge raw material characteristics of the coal gangue raw materials and municipal sludge raw materials, and crush the coal gangue raw materials and municipal sludge raw materials based on the coal gangue raw material characteristics and municipal sludge raw material characteristics to obtain coal gangue powder and municipal sludge powder;

[0190] The leaching parameter value determination module 202 is used to collect the gangue powder images and municipal sludge powder images of the gangue powder and the municipal sludge powder, identify the gangue chemical properties and municipal sludge chemical properties of the gangue powder and the municipal sludge powder, establish the leaching mechanism of the gangue powder and the municipal sludge powder according to the gangue powder image, the municipal sludge powder image, the gangue chemical properties and the municipal sludge chemical properties, and analyze the leaching parameter values ​​of the gangue powder and the municipal sludge powder based on the leaching response algorithm in the leaching mechanism, wherein the leaching parameters include solid-liquid ratio, leaching time and EDTA concentration;

[0191] The temperature-weight loss curve construction module 203 is used to leach the gangue powder and the municipal sludge powder by using the leaching module in the leaching mechanism according to the leaching parameter value to obtain leached gangue powder and leached municipal sludge powder, mix the leached gangue powder and the leached municipal sludge powder to obtain a mixed solid waste powder, perform pyrolysis simulation on the mixed solid waste powder to obtain pyrolysis simulation data, and establish a temperature-weight loss curve of the mixed solid waste powder according to the pyrolysis simulation data;

[0192] The biochar modification module 204 is used to calculate the weight loss rate of the temperature-weight loss curve, define the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, and pyrolyze the mixed solid waste powder according to the pyrolysis parameters to obtain pyrolyzed biochar, acidify the pyrolyzed biochar to obtain acidified biochar, calculate the pH stability coefficient of the acidified biochar, and when the pH stability coefficient meets the preset pH stability threshold, ball mill the acidified biochar to obtain the first modified biochar;

[0193] The soil conditioner construction module 205 is used to analyze the active sites of the first modified biochar, construct the plasma of the first modified biochar through the active sites, increase the active sites of the first modified biochar through the plasma, and obtain the target biochar soil conditioner.

[0194] In detail, the modules described in the system 200 for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner described in the embodiment of the present invention adopt the same technical means as the method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner described in the accompanying drawings when used, and can produce the same technical effects, which will not be repeated here.

[0195] An embodiment of the present invention provides an electronic device for implementing a method for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner.

[0196] See also Figure 3 As shown, the electronic device may include a processor 30, a memory 31, a communication bus 32 and a communication interface 33, and may also include a computer program stored in the memory 31 and executable on the processor 30, such as a method for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner.

[0197] In some embodiments, the processor may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips, etc. The processor is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect the various components of the entire electronic device, and executes or executes the program or module stored in the memory (for example, executing the preparation program of modified coal gangue-municipal sludge-based biochar soil conditioner, etc.), and calls the data stored in the memory to execute various functions of the electronic device and process data.

[0198] The memory includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. In some embodiments, the memory may be an internal storage unit of an electronic device, such as a mobile hard disk of the electronic device. In other embodiments, the memory may also be an external storage device of an electronic device, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device. Further, the memory may also include both an internal storage unit of the electronic device and an external storage device. The memory can be used not only to store application software and various types of data installed in the electronic device, such as the code of the preparation program of the modified coal gangue-municipal sludge-based biochar soil conditioner, but also to temporarily store data that has been output or is to be output.

[0199] The communication bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The bus is configured to realize connection and communication between the memory and at least one processor, etc.

[0200] The communication interface is used for communication between the above-mentioned electronic device and other devices, including a network interface and a user interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device and other electronic devices. The user interface may be a display (Display), an input unit (such as a keyboard (Keyboard)), and optionally, the user interface may also be a standard wired interface, a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode, organic light-emitting diode) touch device, etc. Among them, the display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device and to display a visual user interface.

[0201] For example, although not shown, the electronic device may also include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the at least one processor through a power management system, so that the power management system can realize functions such as charging management, discharging management, and power consumption management. The power source may also include any components such as one or more DC or AC power sources, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators. The electronic device may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0202] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0203] The preparation program of the modified coal gangue-municipal sludge-based biochar soil conditioner stored in the memory of the electronic device is a combination of multiple instructions, which, when executed in the processor, can achieve:

[0204] Obtaining a coal gangue raw material and a municipal sludge raw material, identifying the coal gangue raw material characteristics and the municipal sludge raw material characteristics of the coal gangue raw material and the municipal sludge raw material, and based on the coal gangue raw material characteristics and the municipal sludge raw material characteristics, crushing the coal gangue raw material and the municipal sludge raw material to obtain coal gangue powder and municipal sludge powder;

[0205] Collecting the gangue powder images and municipal sludge powder images of the gangue powder and municipal sludge powder, identifying the gangue chemical properties and municipal sludge chemical properties of the gangue powder and municipal sludge powder, establishing the leaching mechanism of the gangue powder and municipal sludge powder according to the gangue powder images, the municipal sludge powder images, the gangue chemical properties and the municipal sludge chemical properties, and analyzing the leaching parameter values ​​of the gangue powder and municipal sludge powder based on the leaching response algorithm in the leaching mechanism, wherein the leaching parameters include solid-liquid ratio, leaching time and EDTA concentration;

[0206] The gangue powder and the municipal sludge powder are leached by using the leaching module in the leaching mechanism according to the leaching parameter value to obtain leached gangue powder and leached municipal sludge powder, the leached gangue powder and the leached municipal sludge powder are mixed to obtain a mixed solid waste powder, a pyrolysis simulation is performed on the mixed solid waste powder to obtain pyrolysis simulation data, and a temperature-weight loss curve of the mixed solid waste powder is established according to the pyrolysis simulation data;

[0207] Calculating the weight loss rate of the temperature-weight loss curve, defining the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, pyrolyzing the mixed solid waste powder according to the pyrolysis parameters to obtain pyrolyzed biochar, acidifying the pyrolyzed biochar to obtain acidified biochar, calculating the pH stability coefficient of the acidified biochar, and when the pH stability coefficient meets a preset pH stability threshold, ball milling the acidified biochar to obtain a first modified biochar;

[0208] The active sites of the first modified biochar are analyzed, a plasma of the first modified biochar is constructed through the active sites, and the active sites of the first modified biochar are increased through the plasma to obtain a target biochar soil conditioner.

[0209] Specifically, the specific implementation method of the processor for the above instructions can refer to the description of the relevant steps in the corresponding embodiment of the accompanying drawings, which will not be repeated here.

[0210] Furthermore, if the module / unit integrated in the electronic device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or system that can carry the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0211] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can implement:

[0212] Obtaining a coal gangue raw material and a municipal sludge raw material, identifying the coal gangue raw material characteristics and the municipal sludge raw material characteristics of the coal gangue raw material and the municipal sludge raw material, and based on the coal gangue raw material characteristics and the municipal sludge raw material characteristics, crushing the coal gangue raw material and the municipal sludge raw material to obtain coal gangue powder and municipal sludge powder;

[0213] Collecting the gangue powder images and municipal sludge powder images of the gangue powder and municipal sludge powder, identifying the gangue chemical properties and municipal sludge chemical properties of the gangue powder and municipal sludge powder, establishing the leaching mechanism of the gangue powder and municipal sludge powder according to the gangue powder images, the municipal sludge powder images, the gangue chemical properties and the municipal sludge chemical properties, and analyzing the leaching parameter values ​​of the gangue powder and municipal sludge powder based on the leaching response algorithm in the leaching mechanism, wherein the leaching parameters include solid-liquid ratio, leaching time and EDTA concentration;

[0214] The gangue powder and the municipal sludge powder are leached by using the leaching module in the leaching mechanism according to the leaching parameter value to obtain leached gangue powder and leached municipal sludge powder, the leached gangue powder and the leached municipal sludge powder are mixed to obtain a mixed solid waste powder, a pyrolysis simulation is performed on the mixed solid waste powder to obtain pyrolysis simulation data, and a temperature-weight loss curve of the mixed solid waste powder is established according to the pyrolysis simulation data;

[0215] Calculating the weight loss rate of the temperature-weight loss curve, defining the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, pyrolyzing the mixed solid waste powder according to the pyrolysis parameters to obtain pyrolyzed biochar, acidifying the pyrolyzed biochar to obtain acidified biochar, calculating the pH stability coefficient of the acidified biochar, and when the pH stability coefficient meets a preset pH stability threshold, ball milling the acidified biochar to obtain a first modified biochar;

[0216] The active sites of the first modified biochar are analyzed, a plasma of the first modified biochar is constructed through the active sites, and the active sites of the first modified biochar are increased through the plasma to obtain a target biochar soil conditioner.

[0217] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0218] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0219] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0220] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0221] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, so it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any attached figure mark in the claims should not be regarded as limiting the claims involved.

[0222] The embodiments of the present application can acquire and process relevant data based on artificial intelligence technology. Artificial Intelligence (AI) is the theory, method, technology and application system that uses digital computers or machines controlled by digital computers to simulate, extend and expand human intelligence, perceive the environment, acquire knowledge and use knowledge to obtain the best results.

[0223] In addition, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or systems stated in a system claim can also be implemented by one unit or system through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

Claims

1. A method for preparing a modified coal gangue-municipal sludge-based biochar soil conditioner, characterized in that: The method comprises: Obtaining a coal gangue raw material and a municipal sludge raw material, identifying the coal gangue raw material characteristics and the municipal sludge raw material characteristics of the coal gangue raw material and the municipal sludge raw material, and based on the coal gangue raw material characteristics and the municipal sludge raw material characteristics, crushing the coal gangue raw material and the municipal sludge raw material to obtain coal gangue powder and municipal sludge powder; Collecting the gangue powder images and municipal sludge powder images of the gangue powder and municipal sludge powder, identifying the gangue chemical properties and municipal sludge chemical properties of the gangue powder and municipal sludge powder, establishing the leaching mechanism of the gangue powder and municipal sludge powder according to the gangue powder images, the municipal sludge powder images, the gangue chemical properties and the municipal sludge chemical properties, and analyzing the leaching parameter values ​​of the gangue powder and municipal sludge powder based on the leaching response algorithm in the leaching mechanism, wherein the leaching parameters include solid-liquid ratio, leaching time and EDTA concentration; The gangue powder and the municipal sludge powder are leached by using the leaching module in the leaching mechanism according to the leaching parameter value to obtain leached gangue powder and leached municipal sludge powder, the leached gangue powder and the leached municipal sludge powder are mixed to obtain a mixed solid waste powder, a pyrolysis simulation is performed on the mixed solid waste powder to obtain pyrolysis simulation data, and a temperature-weight loss curve of the mixed solid waste powder is established according to the pyrolysis simulation data; Calculating the weight loss rate of the temperature-weight loss curve, defining the pyrolysis parameters of the mixed solid waste powder according to the weight loss rate, pyrolyzing the mixed solid waste powder according to the pyrolysis parameters to obtain pyrolyzed biochar, acidifying the pyrolyzed biochar to obtain acidified biochar, calculating the pH stability coefficient of the acidified biochar, and when the pH stability coefficient meets a preset pH stability threshold, ball milling the acidified biochar to obtain a first modified biochar; The active sites of the first modified biochar are analyzed, a plasma of the first modified biochar is constructed through the active sites, and the active sites of the first modified biochar are increased through the plasma to obtain a target biochar soil conditioner.

2. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 1, characterized in that: The method of crushing the gangue raw material and the municipal sludge raw material based on the characteristics of the gangue raw material and the municipal sludge raw material to obtain gangue powder and municipal sludge powder comprises: Defining the detailed requirements of the coal gangue raw materials and municipal sludge raw materials; thermally treating the municipal sludge raw material to obtain dried municipal sludge particles; According to the characteristics of the gangue raw material, the characteristics of the municipal sludge raw material and the refinement requirements, a multi-stage refinement environment of the gangue raw material and the dried municipal sludge particles is constructed; Pre-crushing the gangue raw material and the dried municipal sludge particles by using the pre-crushing stage in the multi-stage fine crushing environment to obtain pre-crushed gangue particles and pre-crushed municipal sludge particles; Using the refining stages in the multi-stage refining environment to refine the pre-crushed gangue particles and pre-crushed municipal sludge particles to obtain refined gangue particles and refined municipal sludge particles; Calculating the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles; When the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient simultaneously meet the preset coal gangue refinement uniformity standard and the sludge refinement uniformity standard, the refined coal gangue particles and the refined municipal sludge particles are screened using the mesh screen level in the multi-stage crushing environment to obtain the coal gangue powder and the municipal sludge powder.

3. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 2, characterized in that: The calculation of the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles includes: Defining the particle size range of the refined coal gangue particles and the refined municipal sludge particles; Determining a particle size interval weight, a particle size interval shape factor, and an interval surface characteristic factor of the particle size interval; Based on the particle size interval weight, particle size interval shape factor and interval surface characteristic factor, the following formula is used to calculate the coal gangue refinement uniformity coefficient and the sludge refinement uniformity coefficient of the refined coal gangue particles and the refined municipal sludge particles: in, It indicates the uniformity coefficient of coal gangue refinement. Refinement of coal gangue particles The granularity interval weight of the granularity interval, Refinement of coal gangue particles The size interval shape factor of the size interval, Refinement of coal gangue particles The surface characteristic factor of each particle size interval is Refinement of coal gangue particles The coarse particle size distribution value of the particle size interval, Refinement of coal gangue particles The median particle size distribution value of the particle size interval is Refinement of coal gangue particles The fineness distribution value of the particle size interval, It represents the sludge refinement uniformity coefficient, Represents the refinement of municipal sludge particles The granularity interval weight of the granularity interval, Represents the refinement of municipal sludge particles The size interval shape factor of the size interval, Represents the refinement of municipal sludge particles The surface characteristic factor of each particle size interval is Represents the refinement of municipal sludge particles The coarse particle size distribution value of the particle size interval, Represents the refinement of municipal sludge particles The median particle size distribution value of the particle size interval is Represents the refinement of municipal sludge particles The fineness distribution value of the particle size interval, The number of particle size intervals of refined coal gangue particles and refined municipal sludge particles.

4. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 3, characterized in that: The step of establishing the leaching mechanism of the gangue powder and the municipal sludge powder according to the gangue powder image, the municipal sludge powder image, the gangue chemical properties and the municipal sludge chemical properties comprises: Performing image denoising on the gangue powder image and the municipal sludge powder image to obtain a denoised gangue powder image and a denoised municipal sludge powder image; Extracting the gangue powder features and the municipal sludge powder features of the denoised gangue powder image and the denoised municipal sludge powder image; Determining leaching parameters of the gangue powder and the municipal sludge powder according to the characteristics of the gangue powder, the characteristics of the municipal sludge powder, the chemical properties of the gangue, and the chemical properties of the municipal sludge; Through the leaching parameters, the leaching mechanism of the coal gangue powder and the municipal sludge powder is established.

5. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 4, characterized in that: The leaching response algorithm based on the leaching mechanism analyzes the leaching parameter values ​​of the gangue powder and the municipal sludge powder, including: Constructing a parameter experimental matrix of the leaching mechanism and constructing initial leaching parameter values ​​of the parameter experimental matrix; Collecting parameter experimental data of the parameter experimental matrix; According to the parameter experimental data, constructing the leaching response model of the coal gangue powder and the municipal sludge powder; Based on the leaching response model, the leaching efficiency of the coal gangue powder and the municipal sludge powder is analyzed using the leaching response algorithm in the leaching mechanism; The initial leaching parameter value is optimized through the leaching efficiency and the leaching response model to obtain the leaching parameter values ​​of the coal gangue powder and the municipal sludge powder.

6. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 5, characterized in that: The leaching response model is based on the leaching response algorithm in the leaching mechanism to analyze the leaching efficiency of the gangue powder and the municipal sludge powder, including: Identifying leaching parameter characteristics of the coal gangue powder and the municipal sludge powder; Based on the leaching response model and the leaching parameter characteristics, the parameter order coefficients and parameter interaction coefficients of the gangue powder and the municipal sludge powder are defined, wherein the parameter order coefficients include a parameter first order coefficient, a parameter second order coefficient, and a parameter third order coefficient; According to the parameter order coefficient and the parameter interaction coefficient, the leaching efficiency of the gangue powder and the municipal sludge powder is analyzed using the leaching response algorithm, wherein the leaching response algorithm: in, Indicates the leaching efficiency of coal gangue powder and municipal sludge powder, Indicates the first leaching parameters, Indicates coal gangue powder and municipal sludge powder The linear coefficient of the leaching parameter, Indicates the first leaching parameters, Indicates coal gangue powder and municipal sludge powder The leaching parameters and The parameter interaction coefficients of the leaching parameters, Indicates coal gangue powder and municipal sludge powder The coefficient of the quadratic term of the leaching parameter, Indicates coal gangue powder and municipal sludge powder The leaching parameters and The parameter interaction coefficient of the square of the leaching parameter, Indicates coal gangue powder and municipal sludge powder The cubic coefficient of the leaching parameter, represents the error term, represents the intercept term, It indicates the number of leaching parameters corresponding to coal gangue powder and municipal sludge powder.

7. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 6, characterized in that: The step of establishing a temperature-weight loss curve of the mixed solid waste powder according to the pyrolysis simulation data comprises: removing outliers from the pyrolysis simulation data to obtain target pyrolysis simulation data; Based on the target pyrolysis simulation data, constructing a pyrolysis scatter plot of the mixed solid waste powder; Analyzing the scatter point distribution of the pyrolysis scatter point diagram, and determining the temperature-weight loss relationship model of the mixed solid waste powder through the scatter point distribution; According to the thermal decomposition scatter plot, fitting the initial temperature-weight loss curve of the mixed solid waste powder using the temperature-weight loss relationship model; Calculating the curve goodness of the initial temperature-weight loss curve; When the curve goodness meets a preset curve goodness threshold, the initial temperature-weight loss curve is used as the temperature-weight loss curve of the mixed solid waste powder.

8. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 7, characterized in that: The step of calculating the weight loss rate of the temperature-weight loss curve comprises: marking the weight loss data points of the temperature-weight loss curve; Defining the smoothing window size and polynomial order of the temperature-weight loss curve; Based on the smoothing window size and the polynomial order, the weight loss data points are smoothed using the following formula to obtain smoothed weight loss data points: in, represents the smoothed weightless data points, represents Gaussian weight, Indicates Polynomial of degree, represents half of the smoothing window size, Indicates Weightlessness data point The value of the polynomial fit, represents a weightlessness data point; The weight loss rate of the temperature-weight loss curve is calculated based on the smoothed weight loss data points.

9. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 8, characterized in that: The step of calculating the pH stability coefficient of the acidified biochar comprises: washing the acidified biochar with water to obtain water-washed acidified biochar; Recording the pH value of the water-washed acidified biochar; According to the pH value, constructing a pH titration curve of the acidified biochar; Analyzing the fluctuation value of the pH titration curve; The pH stability coefficient of the acidified biochar is calculated using the fluctuation value.

10. The method for preparing the modified coal gangue-municipal sludge-based biochar soil conditioner according to claim 9, characterized in that: The analyzing the active sites of the first modified biochar comprises: Pretreating the first modified biochar to obtain pretreated modified biochar; Adsorbing the pretreated modified biochar to obtain adsorbed modified biochar; Desorbing the adsorbed modified biochar to obtain desorbed modified biochar, and recording desorption data of the desorbed modified biochar; Based on the desorption data, constructing a desorption curve of the desorbed modified biochar; extracting desorption peak characteristics of the desorption curve; The active sites of the first modified biochar are determined by the desorption peak characteristics.

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