A method and system for resource utilization of riverbed mud

Abstract

The present invention relates to the field of sediment utilization technology, and discloses a method and system for resource utilization of riverbed sediment, the method comprising: obtaining sediment parameters to be processed; preliminarily determining the dehydration time of the sediment based on the sediment quality and sediment humidity, obtaining the real-time humidity of the sediment after the sediment is dehydrated according to the dehydration time; determining whether to dehydrate the sediment again based on a first humidity, and obtaining the re-dehydration time based on the humidity difference; obtaining the proportion of sediment with a target particle size, and controlling the inclination angle of a screening device based on the proportion of sediment; after screening for a preset time, determining whether to adjust the inclination angle of the screening device based on the proportion of sediment with a target particle size in the oversize, and adjusting the inclination angle based on the proportion of sediment with a target particle size in the oversize. The present invention optimizes the dehydration and screening process of the sediment through dynamic monitoring and data processing, thereby improving the efficiency and quality of resource utilization.

Description

Technical Field

[0001] The present invention relates to the technical field of bottom sediment utilization, and in particular to a method and system for resource utilization of river bottom sediment. Background Art

[0002] As a crucial component of aquatic sediments, the treatment and resource utilization of riverbed sediments have always been a key topic in environmental engineering. With the continued advancement of river regulation projects, the treatment of large amounts of dredged sediment has become increasingly prominent.

[0003] In recent years, the resource utilization of riverbed sediments has gradually become a research hotspot and development trend. By converting sediments into building materials, soil conditioners, ecological restoration materials, etc., "waste is turned into treasure". However, the existing riverbed sediment resource utilization technology still has many problems. In the sediment pretreatment stage, the dehydration treatment is not accurate enough, and the dehydration time is often set based on experience, resulting in unstable dehydration effect. Insufficient dehydration will affect subsequent screening and processing procedures, and excessive dehydration will increase energy consumption and processing costs. In the screening process, the selection of screens and the adjustment of screening equipment parameters lack scientific basis, and it is difficult to accurately control according to the actual characteristics and target use of the sediment, resulting in low screening efficiency and the inability to guarantee the quality and specifications of the output materials, which restricts the scale and industrial development of riverbed sediment resource utilization.

[0004] Therefore, it is necessary to provide a method and system for resource utilization of river sediment to solve the problem that the sediment treatment process cannot be accurately controlled in the existing technology. Summary of the Invention

[0005] In view of this, the present invention proposes a method and system for resource utilization of river sediment, aiming to solve the problem in the prior art that the sediment treatment process cannot be accurately controlled.

[0006] On the one hand, the present invention proposes a method for resource utilization of riverbed mud, comprising:

[0007] Obtaining sediment parameters to be processed; wherein the sediment parameters include sediment mass and sediment humidity;

[0008] Preliminarily determining a dehydration time for the sediment according to the sediment mass and the sediment humidity, and obtaining a real-time sediment humidity after the sediment is dehydrated according to the dehydration time, which is recorded as a first humidity;

[0009] determining whether to dehydrate the sludge again based on the first humidity; if dehydration is required, calculating the difference between the sludge humidity and the first humidity, and obtaining a dehydration time based on the humidity difference;

[0010] Select a sieve with a corresponding aperture according to the target use, sample the dehydrated sludge multiple times, obtain the proportion of sludge with the target particle size, and control the inclination angle of the screening equipment according to the proportion of sludge;

[0011] After the preset screening time, the tilt angle of the screening equipment is determined based on the proportion of bottom mud of the target particle size in the screened material. If it is determined to be adjusted, the tilt angle is adjusted based on the proportion of bottom mud of the target particle size in the screened material to obtain the final tilt angle.

[0012] Furthermore, the preliminary determination of the dehydration time of the sediment according to the sediment quality and sediment humidity includes:

[0013] Calculating the similarity between the sediment mass and sediment moisture and the historical sediment mass and sediment moisture;

[0014] According to the similarity, the total dehydration time corresponding to the maximum similarity value in the historical data is obtained, and the total dehydration time is used as the dehydration time of the sediment.

[0015] Furthermore, the determining whether to dehydrate the bottom mud again according to the first humidity includes:

[0016] Setting a standard humidity after dehydration, and if the first humidity is less than or equal to the standard humidity after dehydration, determining that the bottom mud does not need to be dehydrated again;

[0017] If the first humidity is greater than the standard humidity after dehydration, it is determined that the bottom mud needs to be dehydrated again.

[0018] Furthermore, if it is determined that dehydration is required again, the humidity difference between the bottom mud humidity and the first humidity is calculated, and the dehydration time is obtained according to the humidity difference, including:

[0019] Calculating the humidity difference between the bottom mud humidity and the first humidity, and calculating the humidity distance difference between the first humidity and the standard humidity after dehydration;

[0020] Calculating a ratio of the humidity difference to the humidity distance difference, and obtaining a re-dehydration time according to the ratio;

[0021] Set the minimum value of the re-spinning time, and calculate the re-spinning time by the following formula:

[0022] T=T0×(△D / △H)+T1;

[0023] In the above formula, T represents the re-dehydration time, T0 represents the dehydration time, △D represents the humidity distance difference, △H represents the humidity difference, and T1 represents the minimum re-dehydration time.

[0024] Furthermore, the selection of a sieve with a corresponding aperture according to the target application includes:

[0025] Obtain the target use of the sediment and the maximum sediment particle size required for the target use;

[0026] A sieve with a corresponding aperture is selected according to the maximum sediment particle size.

[0027] Furthermore, the method of sampling the dehydrated sludge multiple times to obtain the proportion of sludge of target particle size and controlling the inclination angle of the screening device according to the proportion of sludge includes:

[0028] Calculate the average value of the sediment proportion in the samples taken multiple times, and control the inclination angle of the screening equipment according to the average value of the sediment proportion;

[0029] Setting a proportion interval, if the average value of the bottom mud proportion is less than the minimum value of the proportion interval, adopting the first inclination angle;

[0030] If the average value of the bottom mud proportion is within the proportion range, the second inclination angle is adopted;

[0031] If the average value of the bottom mud proportion is greater than the maximum value of the proportion interval, the third inclination angle is adopted;

[0032] The first inclination angle is greater than the second inclination angle, and the second inclination angle is greater than the third inclination angle.

[0033] Furthermore, after the preset screening time, when determining whether to adjust the inclination angle of the screening device according to the proportion of the bottom mud of the target particle size in the screened material, the method includes:

[0034] Obtain the proportion of sediment of target particle size in the oversize material and set the proportion threshold;

[0035] If the proportion of the bottom mud of the target particle size in the oversize material is less than the proportion threshold, it is determined that the inclination angle of the screening device is not adjusted;

[0036] If the proportion of the bottom mud of the target particle size in the oversize material is greater than or equal to the proportion threshold, it is determined to adjust the inclination angle of the screening equipment.

[0037] Furthermore, the adjustment of the tilt angle according to the proportion of the bottom mud of the target particle size in the oversize material to obtain the final tilt angle includes:

[0038] Calculate the difference between the proportion of sediment of target particle size in the oversize material and the proportion threshold, and pre-set the difference range;

[0039] If the proportion difference is greater than the maximum value of the difference interval, adjusting the tilt angle by a first adjustment coefficient;

[0040] If the proportion difference is within the difference range, adjusting the tilt angle by a second adjustment coefficient;

[0041] If the proportion difference is less than the minimum value of the difference interval, adjusting the tilt angle by a third adjustment coefficient;

[0042] The value range of the adjustment coefficient is 1>the third adjustment coefficient>the second adjustment coefficient>the first adjustment coefficient>0, and the final tilt angle is the product of the tilt angle before adjustment and the adjustment coefficient.

[0043] Furthermore, the resource utilization method for riverbed mud also includes:

[0044] The total dehydration time is obtained by adding the re-dehydration time and the dehydration time;

[0045] The reference tilt angle is obtained by averaging the tilt angle before adjustment and the final tilt angle;

[0046] The sediment parameters, the total dehydration time, the reference tilt angle, the parameters generated during dehydration and the parameters generated during screening are stored as data.

[0047] Compared with the prior art, the beneficial effects of the present invention are as follows: in the sediment pretreatment stage, the present invention preliminarily determines the dehydration time based on the sediment quality and humidity, and determines whether to dehydrate again by real-time monitoring of the first humidity. This dynamic and data-based processing method not only avoids the impact of insufficient dehydration on subsequent screening and utilization, but also prevents excessive dehydration from causing energy waste, ensuring that the sediment is in a suitable treatment state, and laying a good foundation for subsequent processes. In the screening process, the corresponding aperture screen is selected according to the target use, which realizes the precision and orientation of sediment treatment. Whether it is used for building materials production, soil improvement or ecological restoration, the sediment particles can meet specific needs and improve the adaptability of resource utilization. At the same time, the inclination angle of the screening equipment is controlled by obtaining the proportion of sediment with the target particle size through multiple sampling, and is adjusted again according to the proportion of the screened material after the preset screening time, forming a closed-loop feedback mechanism. This mechanism can respond to fluctuations in sediment characteristics and changes in the screening process in real time, continuously optimize the screening effect, and ensure that the quality of the final product is stable and reliable. In addition, this method implements data monitoring and dynamic adjustment strategies throughout the entire treatment process, greatly improving the automation and intelligence level of the treatment process, reducing manual intervention, and reducing human errors. It effectively improves the efficiency, quality and economy of riverbed sediment resource utilization, and is of great significance to promoting environmental protection and sustainable resource development.

[0048] On the other hand, the present application also provides a system for resource utilization of riverbed mud, comprising:

[0049] The acquisition module is configured to obtain the sediment parameters to be processed; wherein the sediment parameters include sediment mass and sediment humidity;

[0050] a dehydration judgment module configured to preliminarily determine a dehydration time for the sediment based on the sediment mass and the sediment humidity, obtain a real-time sediment humidity after dehydrating the sediment according to the dehydration time, record it as a first humidity, and determine whether to dehydrate the sediment again based on the first humidity;

[0051] a dehydration adjustment module configured to calculate the humidity difference between the bottom mud humidity and the first humidity if it is determined that dehydration is needed again, and obtain the dehydration time again according to the humidity difference;

[0052] The screening judgment module is configured to select a sieve with a corresponding aperture according to the target application, sample the dehydrated sludge multiple times, obtain the proportion of sludge with a target particle size, and control the inclination angle of the screening device according to the proportion of sludge;

[0053] The screening adjustment module is configured to determine whether to adjust the inclination angle of the screening equipment according to the proportion of bottom mud of the target particle size in the screened material after the preset screening time. If it is determined to be adjusted, the inclination angle is adjusted according to the proportion of bottom mud of the target particle size in the screened material to obtain the final inclination angle.

[0054] It is understandable that the method and system for resource utilization of riverbed sediment provided in this application have the same beneficial effects and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0056] Figure 1 A flow chart of a method for resource utilization of riverbed sediment provided by an embodiment of the present invention;

[0057] Figure 2 This is a functional block diagram of a system for resource utilization of riverbed sediment provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0058] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0059] In some embodiments of the present application, see Figure 1 As shown, this embodiment provides a method for resource utilization of riverbed mud, comprising the following steps:

[0060] S100, obtaining sediment parameters to be processed; wherein the sediment parameters include sediment mass and sediment humidity;

[0061] S200, preliminarily determining a dehydration time for the sediment based on the sediment mass and the sediment humidity, and obtaining a real-time sediment humidity after the sediment is dehydrated according to the dehydration time, which is recorded as a first humidity;

[0062] S300: determining whether to dehydrate the sludge again based on the first humidity; if dehydration is required, calculating a difference between the sludge humidity and the first humidity, and determining a dehydration time based on the humidity difference;

[0063] S400: Select a sieve with a corresponding aperture according to the target application, sample the dehydrated sludge multiple times, obtain the proportion of sludge with a target particle size, and control the inclination angle of the screening device according to the proportion of sludge;

[0064] S500: After the preset screening time, determine whether to adjust the inclination angle of the screening equipment according to the proportion of the bottom mud of the target particle size in the screened material. If it is determined to be adjusted, adjust the inclination angle according to the proportion of the bottom mud of the target particle size in the screened material to obtain a final inclination angle.

[0065] It is understandable that, in the sediment pretreatment stage, the present invention preliminarily determines the dehydration time based on the sediment quality and humidity, and determines whether to dehydrate again by real-time monitoring of the first humidity. This dynamic and data-based processing method not only avoids the impact of insufficient dehydration on subsequent screening and utilization, but also prevents excessive dehydration from causing energy waste, ensuring that the sediment is in a suitable treatment state, and laying a good foundation for subsequent processes. In the screening process, the corresponding aperture screen is selected according to the target use, which realizes the precision and orientation of sediment treatment. Whether it is used for building materials production, soil improvement or ecological restoration, the sediment particles can meet specific needs and improve the adaptability of resource utilization. At the same time, the inclination angle of the screening equipment is controlled by obtaining the proportion of sediment with the target particle size through multiple sampling, and is adjusted again according to the proportion of the screened material after the preset screening time, forming a closed-loop feedback mechanism. This mechanism can respond to fluctuations in sediment characteristics and changes in the screening process in real time, continuously optimize the screening effect, and ensure that the quality of the final product is stable and reliable. In addition, this method implements data monitoring and dynamic adjustment strategies throughout the entire treatment process, greatly improving the automation and intelligence level of the treatment process, reducing manual intervention, and reducing human errors. It effectively improves the efficiency, quality and economy of riverbed sediment resource utilization, and is of great significance to promoting environmental protection and sustainable resource development.

[0066] Specifically, the screening equipment includes a vibrating screen and a drum screen.

[0067] In some embodiments of the present application, the preliminarily determining the dehydration time of the sediment according to the sediment mass and the sediment humidity includes:

[0068] Calculating the similarity between the sediment mass and sediment moisture and the historical sediment mass and sediment moisture;

[0069] According to the similarity, the total dehydration time corresponding to the maximum similarity value in the historical data is obtained, and the total dehydration time is used as the dehydration time of the sediment.

[0070] It can be understood that this embodiment matches the optimal dehydration time by calculating the similarity between the current sediment parameters and historical data, thereby realizing the digital inheritance and intelligent application of processing experience. First, the method based on big data matching can more accurately reflect the actual dehydration needs of different sediment characteristics and avoid the blindness of parameter setting; secondly, with the continuous accumulation of historical cases, the matching accuracy and processing effect of the system will continue to improve, and it will have the ability of self-learning optimization, which not only ensures the dehydration effect, but also avoids the energy waste caused by excessive dehydration. This data-driven decision-making model is particularly suitable for processing river sediments with complex components and variable characteristics, and provides a reliable technical guarantee for resource utilization. Specifically, in some embodiments of the present application, the following formula can be used to calculate the similarity:

[0071] ;

[0072] In the above formula, S represents similarity, Mc represents sediment quality, Mh represents historical sediment quality, Hc represents sediment humidity, and Hh represents historical sediment humidity.

[0073] In some embodiments of the present application, the determining whether to dehydrate the sludge again according to the first humidity includes:

[0074] Setting a standard humidity after dehydration, and if the first humidity is less than or equal to the standard humidity after dehydration, determining that the bottom mud does not need to be dehydrated again;

[0075] If the first humidity is greater than the standard humidity after dehydration, it is determined that the bottom mud needs to be dehydrated again.

[0076] In some embodiments of the present application, if it is determined that dehydration is required again, calculating the humidity difference between the bottom mud humidity and the first humidity, and obtaining the dehydration time again according to the humidity difference, includes:

[0077] Calculating the humidity difference between the bottom mud humidity and the first humidity, and calculating the humidity distance difference between the first humidity and the standard humidity after dehydration;

[0078] Calculating a ratio of the humidity difference to the humidity distance difference, and obtaining a re-dehydration time according to the ratio;

[0079] Set the minimum value of the re-spinning time, and calculate the re-spinning time by the following formula:

[0080] T=T0×(△D / △H)+T1;

[0081] In the above formula, T represents the re-dehydration time, T0 represents the dehydration time, △D represents the humidity distance difference, △H represents the humidity difference, and T1 represents the minimum re-dehydration time.

[0082] As can be appreciated, the present invention achieves precise control of the dehydration process by establishing a multi-level humidity assessment system. First, by establishing an objective benchmark for post-dehydration standard humidity, a clear quantitative standard is established for determining re-dehydration, avoiding the subjectivity and uncertainty inherent in traditional empirical methods. Second, by introducing a dual calculation mechanism for humidity difference and humidity distance difference, the re-dehydration time is dynamically determined based on their ratio. This method more accurately reflects actual dehydration needs, avoiding energy waste caused by over-dehydration while ensuring the desired dehydration effect. The present invention cleverly combines the dual considerations of relative humidity difference and absolute humidity difference (humidity distance difference and humidity difference). This adaptive calculation method automatically adjusts parameters based on the characteristics of different sediments and the initial dehydration effect, significantly improving process efficiency and stability. By setting a minimum re-dehydration time value, T1, this method ensures basic dehydration treatment results while preventing ineffective dehydration operations due to undervalued calculated values. Overall, this method achieves intelligent control of the dehydration process, providing a reliable technical foundation for the resourceful utilization of river sediments.

[0083] In some embodiments of the present application, the selection of a sieve with a corresponding aperture according to the target application includes:

[0084] Obtain the target use of the sediment and the maximum sediment particle size required for the target use;

[0085] A sieve with a corresponding aperture is selected according to the maximum sediment particle size.

[0086] It is understandable that by obtaining the target use of the sediment and the maximum required particle size to select the screen, it is possible to accurately match the needs of different application scenarios. In the production of building materials, clarifying the maximum required particle size can avoid the problem of particles being too large or too small due to improper screen aperture, ensuring that the sediment particles meet the standards for building material production and improving product quality; in the soil improvement scenario, accurate screen aperture selection can ensure that after the sediment is mixed with the soil, the soil structure and fertility are effectively improved, achieving directional optimization. At the same time, this method reduces repeated screening and resource waste caused by improper screen selection, greatly improves sediment treatment efficiency, reduces production costs, and provides a scientific and efficient technical path for the resource utilization of river sediment.

[0087] Specifically, in a river dredging project in a certain city, part of the sediment was planned to be used to make environmentally friendly permeable bricks. The engineering staff first determined that the maximum sediment particle size required for the production of environmentally friendly permeable bricks was 1.2mm. This was to ensure that the bricks had good permeability and structural strength after molding. Subsequently, based on this data, a sieve with a pore size of 1.2mm was selected to screen the dehydrated sediment. During the screening process, impurities and particles with a particle size greater than 1.2mm in the sediment were effectively intercepted, while particles that met the requirements passed through the sieve smoothly and entered the subsequent brick-making process. Ultimately, the performance indicators of the produced environmentally friendly permeable bricks met the standards, not only realizing the resource utilization of river sediment, but also solving the problem of dredging sediment treatment.

[0088] In some embodiments of the present application, the method of sampling the dehydrated sludge multiple times to obtain the proportion of sludge of target particle size and controlling the inclination angle of the screening device according to the proportion of sludge includes:

[0089] Calculate the average value of the sediment proportion in the samples taken multiple times, and control the inclination angle of the screening equipment according to the average value of the sediment proportion;

[0090] Setting a proportion interval, if the average value of the bottom mud proportion is less than the minimum value of the proportion interval, adopting the first inclination angle;

[0091] If the average value of the bottom mud proportion is within the proportion range, the second inclination angle is adopted;

[0092] If the average value of the bottom mud proportion is greater than the maximum value of the proportion interval, the third inclination angle is adopted;

[0093] The first inclination angle is greater than the second inclination angle, and the second inclination angle is greater than the third inclination angle.

[0094] It can be understood that the present invention uses the average value as the control basis, effectively avoiding the error caused by the fluctuation of single sampling data, and can more truly reflect the overall particle size distribution of the sediment; by dividing the proportion interval and corresponding to different inclination angles, the complex screening control logic is converted into standardized and quantifiable operating rules, which is convenient for operators to respond quickly and for the equipment to run automatically. When the average value of the sediment proportion is low, increasing the inclination angle can accelerate the screening process and improve efficiency; when it is in the appropriate interval, a moderate angle is used to ensure the screening quality; when it is above the upper limit of the interval, the angle is reduced for refined screening to ensure that the screened sediment particle size meets the requirements of the target use. This method not only improves the screening efficiency, but also ensures product quality, reduces the rework cost caused by improper angle control, and realizes efficient and accurate control of the screening link in the resource utilization of river sediment.

[0095] Specifically, in a riverbed sediment resource utilization project, the sediment was intended to be used in the production of building bricks. The target particle size was 0.5-1.5 mm, and the target particle size percentage was set at 85%-95%. Five samples were taken from the dehydrated sediment, and the target particle size percentages were measured at 82%, 84%, 81%, 83%, and 80%, respectively. The average value was 82%, which was less than the minimum percentage of 85%. Based on the control rules, the screening equipment's tilt angle was automatically adjusted to a first angle of 25° (larger than the conventional angle), accelerating the flow of sediment across the screen and allowing more of the target particle size to pass through.

[0096] In some embodiments of the present application, after the preset screening time, determining whether to adjust the inclination angle of the screening device according to the proportion of sediment of target particle size in the oversize material includes:

[0097] Obtain the proportion of sediment of target particle size in the oversize material and set the proportion threshold;

[0098] If the proportion of the bottom mud of the target particle size in the oversize material is less than the proportion threshold, it is determined that the inclination angle of the screening device is not adjusted;

[0099] If the proportion of the bottom mud of the target particle size in the oversize material is greater than or equal to the proportion threshold, it is determined to adjust the inclination angle of the screening equipment.

[0100] In some embodiments of the present application, the adjusting the tilt angle according to the proportion of sediment of target particle size in the oversize material to obtain the final tilt angle includes:

[0101] Calculate the difference between the proportion of sediment of target particle size in the oversize material and the proportion threshold, and pre-set the difference range;

[0102] If the proportion difference is greater than the maximum value of the difference interval, adjusting the tilt angle by a first adjustment coefficient;

[0103] If the proportion difference is within the difference range, adjusting the tilt angle by a second adjustment coefficient;

[0104] If the proportion difference is less than the minimum value of the difference interval, adjusting the tilt angle by a third adjustment coefficient;

[0105] The value range of the adjustment coefficient is 1>the third adjustment coefficient>the second adjustment coefficient>the first adjustment coefficient>0, and the final tilt angle is the product of the tilt angle before adjustment and the adjustment coefficient.

[0106] It is understandable that by setting a percentage threshold to determine whether to adjust the angle, unnecessary changes in equipment parameters can be avoided, mechanical losses and energy waste can be reduced, and the screening process can be ensured to be carried out in a stable state. When the proportion of target particle size sediment in the screened material reaches or exceeds the threshold, the percentage difference is further calculated and the angle is adjusted according to the difference range and adjustment coefficient, thereby achieving graded and precise adjustment of the inclination angle. Different adjustment coefficients correspond to different percentage differences, so that the equipment can dynamically and reasonably adjust the inclination angle according to the degree of deviation of the actual screening effect, which not only ensures the screening efficiency, but also accurately controls the sediment screening quality. This closed-loop feedback adjustment mechanism greatly improves the adaptive ability of the screening equipment, effectively reduces the frequency of manual intervention, ensures the efficiency and stability of the screening process in the process of resource utilization of river sediment, and provides a reliable guarantee for the production of high-quality resource products.

[0107] Specifically, the threshold for the percentage of sediment of the target particle size (0.2-0.8mm) in the oversize fraction was set at 15%, the difference range was 15%-25%, the first adjustment coefficient was 0.9, the second adjustment coefficient was 0.95, and the third adjustment coefficient was 0.98. After the preset screening time expired, the percentage of sediment of the target particle size in the oversize fraction was measured to be 28%, exceeding the threshold of 15%, necessitating an angle adjustment. The calculated percentage difference was 28% - 15% = 13%, which was less than the minimum difference range of 15%. The current tilt angle (assuming it was 20°) was adjusted by the third adjustment coefficient of 0.98, resulting in a final tilt angle of 20° × 0.98 = 19.6°. After this adjustment, screening was continued, and the percentage of sediment of the target particle size in the oversize fraction was re-measured, gradually approaching a reasonable range. This ensured that the particle size of the raw material for ceramsite production met the requirements, effectively improving the quality and production efficiency of ceramsite products and successfully achieving efficient resource utilization of riverbed sediment.

[0108] In some embodiments of the present application, the method for resource utilization of riverbed mud further includes:

[0109] The total dehydration time is obtained by adding the re-dehydration time and the dehydration time;

[0110] The reference tilt angle is obtained by averaging the tilt angle before adjustment and the final tilt angle;

[0111] The sediment parameters, the total dehydration time, the reference tilt angle, the parameters generated during dehydration and the parameters generated during screening are stored as data.

[0112] It is understandable that the method of summing the re-dehydration time and the dehydration time to obtain the total dehydration time, averaging the inclination angle before adjustment and the final inclination angle to obtain the reference inclination angle, and storing data for various parameters has significantly improved the data management and analysis capabilities of the river sediment resource utilization process. The statistics of the total dehydration time provide a direct reference for the duration of subsequent similar sediment treatments, making it easier for operators to estimate the treatment cycle, arrange production plans reasonably, and improve overall work efficiency. The calculation of the reference inclination angle integrates the information on angle adjustment during the screening process, provides key data for optimizing the operating parameters of the screening equipment, and helps to improve the screening effect and equipment stability. The comprehensive storage of sediment parameters and various parameters generated during dehydration and screening has built a complete data resource library.

[0113] On the other hand, see Figure 2 As shown, the present application also provides a system for resource utilization of riverbed mud, which is used to apply the above-mentioned resource utilization method for riverbed mud, including:

[0114] The acquisition module is configured to obtain the sediment parameters to be processed; wherein the sediment parameters include sediment mass and sediment humidity;

[0115] a dehydration judgment module configured to preliminarily determine a dehydration time for the sediment based on the sediment mass and the sediment humidity, obtain a real-time sediment humidity after dehydrating the sediment according to the dehydration time, record it as a first humidity, and determine whether to dehydrate the sediment again based on the first humidity;

[0116] a dehydration adjustment module configured to calculate the humidity difference between the bottom mud humidity and the first humidity if it is determined that dehydration is needed again, and obtain the dehydration time again according to the humidity difference;

[0117] The screening judgment module is configured to select a sieve with a corresponding aperture according to the target application, sample the dehydrated sludge multiple times, obtain the proportion of sludge with a target particle size, and control the inclination angle of the screening device according to the proportion of sludge;

[0118] The screening adjustment module is configured to determine whether to adjust the inclination angle of the screening equipment according to the proportion of bottom mud of the target particle size in the screened material after the preset screening time. If it is determined to be adjusted, the inclination angle is adjusted according to the proportion of bottom mud of the target particle size in the screened material to obtain the final inclination angle.

[0119] It is understandable that the riverbed sediment resource utilization system, through a modular architecture design, breaks down the complex processing process into sub-modules with clear functions, greatly improving the system's operability, stability, and scalability. The acquisition module accurately obtains sediment parameters, providing reliable data support for subsequent processing; the dehydration judgment module and the dehydration adjustment module work together to dynamically adjust the dehydration strategy based on the sediment moisture content, achieving refined control of the dehydration process and avoiding resource waste; the screening judgment module and the screening adjustment module intelligently adjust the screen aperture and equipment tilt angle based on the target use and screening effect to ensure the accuracy and efficiency of sediment screening. The clear division of labor and mutual cooperation among the modules not only reduce the difficulty of system development and maintenance, but also form a closed-loop processing system through data interaction, realizing automated and intelligent management of the entire process of riverbed sediment resource utilization, effectively improving processing efficiency and quality, reducing human intervention and operational errors, providing reliable technical support for large-scale, standardized riverbed sediment treatment, and effectively promoting the industrial development of riverbed sediment resource utilization.

[0120] Furthermore, the resource utilization of sediment includes multi-stage screening. The environmental benefits of recyclable materials and recycled materials screened out during the sediment resource processing process include the use of gravel screened out from sediment to replace gravel production, sand screened out from sediment to replace sand production, clay screened out from sediment to prepare unfired bricks instead of ordinary fired bricks, and sponge soil to reduce sand consumption.

[0121] Specifically, resource utilization is an important development direction of sediment treatment, aiming to achieve the dual goals of resource recycling and environmental protection. The specific methods are diverse and each has its own characteristics:

[0122] Composting: Bottom sludge is composted, and the typical process includes screening, granulation, packaging, and shipping of the compost clinker. The screening system not only returns materials of appropriate particle size for mixing and blending, improving the composting structure and increasing composting efficiency, but also grades the undersize material, allowing materials with the required particle size to be directly packaged and shipped, while materials with excessively fine particle size are granulated to improve quality. This process requires the appropriate selection of screening and granulation equipment. For example, when using an extrusion granulator for sludge compost, the moisture content should be controlled at 35%, and flat die granulation is more suitable than ring die granulation. This produces compost products that meet market demand and can be used in fields such as soil improvement and fertilizer.

[0123] Cement kiln co-processing: Due to the similar chemical properties of domestic sewage sludge and cement raw materials, it can be co-processed in cement kilns. Wet sewage sludge with an 80% moisture content is first dried to a semi-dry sludge with a moisture content of less than 30% using the waste heat from the cement kiln flue gas. This sludge is then fed into the kiln via a screw feeder for incineration and solidification, or mixed with cement raw materials and fed into the kiln. The residue can replace clay as a siliceous and aluminum-rich raw material. Alternatively, 80% moisture sludge can be directly pumped into the kiln tail using a hydraulic sludge pump and then sprayed into the kiln for incineration using an atomizing spray gun. However, this method is prone to temperature fluctuations at the kiln tail. Under high temperature, organic matter and pathogens in the sludge are fully calcined, and heavy metals are melted and solidified in the mineral crystals of the cement clinker. Furthermore, rotary kilns have a large heat capacity and processing capacity, effectively realizing the resource utilization of sludge.

[0124] Other utilization methods: The ash from sludge incineration, if the heavy metal content meets the standard, can be directly put into landfill or treated with heavy metal chelating agents; it can also be used as building materials for road paving, brick making, etc., to achieve the reuse of sludge, reduce dependence on natural materials, and reduce the impact of waste on the environment.

[0125] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0126] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0127] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1The function specified in one or more boxes.

[0128] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for resource utilization of riverbed mud, characterized in that: include: Obtaining sediment parameters to be processed; wherein the sediment parameters include sediment mass and sediment humidity; Preliminarily determining a dehydration time for the sediment according to the sediment mass and the sediment humidity, and obtaining a real-time sediment humidity after the sediment is dehydrated according to the dehydration time, which is recorded as a first humidity; determining whether to dehydrate the sludge again based on the first humidity; if dehydration is required, calculating the difference between the sludge humidity and the first humidity, and obtaining a dehydration time based on the humidity difference; Select a sieve with a corresponding aperture according to the target use, sample the dehydrated sludge multiple times, obtain the proportion of sludge with the target particle size, and control the inclination angle of the screening equipment according to the proportion of sludge; After the preset screening time, the tilt angle of the screening equipment is determined based on the proportion of bottom mud of the target particle size in the screened material. If it is determined to be adjusted, the tilt angle is adjusted based on the proportion of bottom mud of the target particle size in the screened material to obtain the final tilt angle.

2. The resource utilization method for riverbed mud according to claim 1, characterized in that: The preliminary determination of the dehydration time of the sediment according to the sediment quality and sediment humidity includes: Calculating the similarity between the sediment mass and sediment moisture and the historical sediment mass and sediment moisture; According to the similarity, the total dehydration time corresponding to the maximum similarity value in the historical data is obtained, and the total dehydration time is used as the dehydration time of the sediment.

3. The resource utilization method for riverbed mud according to claim 2, characterized in that: The determining whether to dehydrate the bottom mud again according to the first humidity includes: Setting a standard humidity after dehydration, and if the first humidity is less than or equal to the standard humidity after dehydration, determining that the bottom mud does not need to be dehydrated again; If the first humidity is greater than the standard humidity after dehydration, it is determined that the bottom mud needs to be dehydrated again.

4. The resource utilization method for riverbed mud according to claim 3, characterized in that: If it is determined that dehydration is required again, the humidity difference between the bottom mud humidity and the first humidity is calculated, and the dehydration time is obtained according to the humidity difference, including: Calculating the humidity difference between the bottom mud humidity and the first humidity, and calculating the humidity distance difference between the first humidity and the standard humidity after dehydration; Calculating a ratio of the humidity difference to the humidity distance difference, and obtaining a re-dehydration time according to the ratio; Set the minimum value of the re-spinning time, and calculate the re-spinning time by the following formula: T=T0×(△D / △H)+T1; In the above formula, T represents the time for dehydration again, T0 represents the time for dehydration, △D represents the humidity distance difference, △H represents the humidity difference, and T1 represents the minimum value of the time for dehydration again.

5. The resource utilization method for riverbed mud according to claim 4, characterized in that: When selecting a sieve with a corresponding aperture according to the target application, the following steps are included: Obtain the target use of the sediment and the maximum sediment particle size required for the target use; A sieve with a corresponding aperture is selected according to the maximum sediment particle size.

6. The resource utilization method for riverbed mud according to claim 5, characterized in that: The method of sampling the dehydrated sludge multiple times to obtain the proportion of sludge of target particle size and controlling the inclination angle of the screening device according to the proportion of sludge includes: Calculate the average value of the sediment proportion in the samples taken multiple times, and control the inclination angle of the screening equipment according to the average value of the sediment proportion; Setting a proportion interval, if the average value of the bottom mud proportion is less than the minimum value of the proportion interval, adopting the first inclination angle; If the average value of the bottom mud proportion is within the proportion range, the second inclination angle is adopted; If the average value of the bottom mud proportion is greater than the maximum value of the proportion interval, the third inclination angle is adopted; The first inclination angle is greater than the second inclination angle, and the second inclination angle is greater than the third inclination angle.

7. The resource utilization method for riverbed mud according to claim 6, characterized in that: After the preset screening time, judging whether to adjust the inclination angle of the screening device according to the proportion of the bottom mud of the target particle size in the screened material includes: Obtain the proportion of sediment of target particle size in the oversize material and set the proportion threshold; If the proportion of the bottom mud of the target particle size in the oversize material is less than the proportion threshold, it is determined that the inclination angle of the screening device is not adjusted; If the proportion of the bottom mud of the target particle size in the oversize material is greater than or equal to the proportion threshold, it is determined to adjust the inclination angle of the screening equipment.

8. The resource utilization method for riverbed mud according to claim 7, characterized in that: The adjustment of the tilt angle according to the proportion of the bottom mud of the target particle size in the oversize material to obtain the final tilt angle includes: Calculate the difference between the proportion of sediment of target particle size in the oversize material and the proportion threshold, and pre-set the difference range; If the proportion difference is greater than the maximum value of the difference interval, adjusting the tilt angle by a first adjustment coefficient; If the proportion difference is within the difference range, adjusting the tilt angle by a second adjustment coefficient; If the proportion difference is less than the minimum value of the difference interval, adjusting the tilt angle by a third adjustment coefficient; The value range of the adjustment coefficient is 1>the third adjustment coefficient>the second adjustment coefficient>the first adjustment coefficient>0, and the final tilt angle is the product of the tilt angle before adjustment and the adjustment coefficient.

9. The method for resource utilization of riverbed mud according to claim 8, characterized in that: The resource utilization method for riverbed mud also includes: The total dehydration time is obtained by adding the re-dehydration time and the dehydration time; The reference tilt angle is obtained by averaging the tilt angle before adjustment and the final tilt angle; The sediment parameters, the total dehydration time, the reference tilt angle, the parameters generated during dehydration and the parameters generated during screening are stored as data.

10. A system for resource utilization of riverbed mud, used for applying the resource utilization method for riverbed mud according to any one of claims 1 to 9, characterized in that: include: The acquisition module is configured to obtain the sediment parameters to be processed; wherein the sediment parameters include sediment mass and sediment humidity; a dehydration judgment module configured to preliminarily determine a dehydration time for the sediment based on the sediment mass and the sediment humidity, obtain a real-time sediment humidity after dehydrating the sediment according to the dehydration time, record it as a first humidity, and determine whether to dehydrate the sediment again based on the first humidity; a dehydration adjustment module configured to calculate the humidity difference between the bottom mud humidity and the first humidity if it is determined that dehydration is needed again, and obtain the dehydration time again according to the humidity difference; The screening judgment module is configured to select a sieve with a corresponding aperture according to the target application, sample the dehydrated sludge multiple times, obtain the proportion of sludge with a target particle size, and control the inclination angle of the screening device according to the proportion of sludge; The screening adjustment module is configured to determine whether to adjust the inclination angle of the screening equipment according to the proportion of bottom mud of the target particle size in the screened material after the preset screening time. If it is determined to be adjusted, the inclination angle is adjusted according to the proportion of bottom mud of the target particle size in the screened material to obtain the final inclination angle.

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