Resource utilization method and system for river sediment

Abstract

The invention relates to the technical field of sediment utilization, and discloses a resource utilization method and system for river sediment, and the method comprises the following steps: obtaining parameters of to-be-treated sediment; preliminarily determining the dehydration duration of the bottom mud according to the bottom mud quality and the bottom mud humidity, and obtaining the real-time humidity of the bottom mud after the bottom mud is dehydrated according to the dehydration duration; judging whether the bottom mud is dehydrated again or not according to the first humidity, and obtaining the re-dehydration duration according to the humidity difference value; obtaining the proportion of the bottom mud with the target particle size, and controlling the inclination angle of the screening equipment according to the proportion of the bottom mud; and after screening for a preset time, judging whether to adjust the inclination angle of the screening equipment according to the proportion of the bottom mud with the target particle size in the oversize product, and adjusting the inclination angle according to the proportion of the bottom mud with the target particle size in the oversize product. Through dynamic monitoring and datamation treatment, the dewatering and screening process of the bottom mud is optimized, and the resource utilization efficiency and quality are improved.

Description

Technical Field

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

[0002] As an important part of water body sediments, the treatment and resource utilization of river sediment have always been important topics in the field of environmental engineering. With the continuous progress of river regulation projects, the treatment problem of a large amount of dredged sediment has become increasingly prominent.

[0003] In recent years, the resource utilization of river sediment has gradually become a research hotspot and development trend. By converting sediment into building materials, soil conditioners, ecological restoration materials, etc., the goal of "turning waste into treasure" is achieved. However, there are still many problems in the existing river sediment resource utilization technologies. In the sediment pretreatment link, the dehydration treatment is not precise enough. The dehydration duration is often set based on experience, resulting in unstable dehydration effects. Insufficient dehydration will affect subsequent screening and processing procedures, while excessive dehydration will increase energy consumption and treatment costs. During the screening process, the selection of the sieve mesh and the adjustment of the screening equipment parameters lack a scientific basis, making it difficult to accurately control according to the actual characteristics and target uses of the sediment. As a result, the screening efficiency is low, and the quality and specifications of the output materials cannot be guaranteed, restricting the large-scale and industrial development of river sediment resource utilization.

[0004] Therefore, it is necessary to provide a method and system for resource utilization of river sediment to solve the problem in the prior art that the sediment treatment process cannot be accurately controlled. 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 river sediment, including: Obtaining the sediment parameters to be processed; wherein, the sediment parameters include sediment quality and sediment humidity; Preliminarily determining the dehydration duration of the sediment according to the sediment quality and sediment humidity. After dehydrating the sediment through the dehydration duration, obtaining the real-time humidity of the sediment, denoted as the first humidity; Judging whether to dehydrate the sediment again according to the first humidity. If it is judged that re-dehydration is required, calculating the humidity difference between the sediment humidity and the first humidity, and obtaining the re-dehydration duration according to the humidity difference; Selecting a sieve mesh with a corresponding aperture according to the target use, taking multiple samples of the sediment after re-dehydration, obtaining the proportion of the sediment with the target particle size, and controlling the tilt angle of the screening equipment according to the sediment proportion; After the preset screening time, determine whether to adjust the inclination angle of the screening equipment according to the proportion of the sediment with the target particle size in the oversize material. If it is determined to adjust, adjust the inclination angle according to the proportion of the sediment with the target particle size in the oversize material to obtain the final inclination angle.

[0007] Further, when initially determining the dehydration duration of the sediment according to the sediment mass and sediment humidity, it includes: Calculate the similarity between the sediment mass and sediment humidity and the historical sediment mass and historical sediment humidity; According to the similarity, obtain the total dehydration duration corresponding to the maximum similarity value in the historical data, and use the total dehydration duration as the dehydration duration of the sediment.

[0008] Further, when determining whether to dehydrate the sediment again according to the first humidity, it includes: Set the standard humidity after dehydration. If the first humidity is less than or equal to the standard humidity after dehydration, it is determined that the sediment does not need to be dehydrated again; If the first humidity is greater than the standard humidity after dehydration, it is determined that the sediment needs to be dehydrated again.

[0009] Further, when it is determined that re - dehydration is required, calculate the humidity difference between the sediment humidity and the first humidity, and when obtaining the re - dehydration duration according to the humidity difference, it includes: Calculate the humidity difference between the sediment humidity and the first humidity, and calculate the humidity distance difference between the first humidity and the standard humidity after dehydration; Calculate the ratio of the humidity difference to the humidity distance difference, and obtain the re - dehydration duration according to the ratio; Set the minimum value of the re - dehydration duration, and calculate the re - dehydration duration through the following formula: T = T0×(△D / △H)+T1; In the above formula, T represents the re - dehydration duration, T0 represents the dehydration duration, △D represents the humidity distance difference, △H represents the humidity difference, and T1 represents the minimum value of the re - dehydration duration.

[0010] Further, when selecting a sieve mesh with a corresponding pore size according to the target use, it includes: Obtain the target use of the sediment, and obtain the maximum sediment particle size required for the target use; Select a sieve mesh with a corresponding pore size according to the maximum sediment particle size.

[0011] Further, when taking multiple samples of the sediment after re - dehydration, obtaining the proportion of the sediment with the target particle size, and controlling the inclination angle of the screening equipment according to the proportion of the sediment, it includes: Calculate the average value of the proportion of the sediment in the samples taken multiple times, and control the inclination angle of the screening equipment according to the average value of the proportion of the sediment. Set a proportion range. If the average proportion of the bottom mud is less than the minimum value of the proportion range, use the first inclination angle; If the average proportion of the bottom mud is within the proportion range, use the second inclination angle; If the average proportion of the bottom mud is greater than the maximum value of the proportion range, use the third inclination angle; The first inclination angle is greater than the second inclination angle, and the second inclination angle is greater than the third inclination angle.

[0012] Further, after the preset screening time, when judging whether to adjust the inclination angle of the screening equipment according to the proportion of the bottom mud with the target particle size in the oversize material, it includes: Obtain the proportion of the bottom mud with the target particle size in the oversize material and set a proportion threshold; If the proportion of the bottom mud with the target particle size in the oversize material is less than the proportion threshold, judge not to adjust the inclination angle of the screening equipment; If the proportion of the bottom mud with the target particle size in the oversize material is greater than or equal to the proportion threshold, judge to adjust the inclination angle of the screening equipment.

[0013] Further, when adjusting the inclination angle according to the proportion of the bottom mud with the target particle size in the oversize material to obtain the final inclination angle, it includes: Calculate the proportion difference between the proportion of the bottom mud with the target particle size in the oversize material and the proportion threshold, and preset a difference range; If the proportion difference is greater than the maximum value of the difference range, adjust the inclination angle by the first adjustment coefficient; If the proportion difference is within the difference range, adjust the inclination angle by the second adjustment coefficient; If the proportion difference is less than the minimum value of the difference range, adjust the inclination angle by the third adjustment coefficient; Among them, 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 inclination angle is the product value of the inclination angle before adjustment and the adjustment coefficient.

[0014] Further, the resource utilization method for river bottom mud further includes: Sum the re-dehydration duration and the dehydration duration to obtain the total dehydration duration; Take the average of the inclination angle before adjustment and the final inclination angle to obtain the reference inclination angle; Store the bottom mud parameters, total dehydration duration, reference inclination angle, parameters generated during dehydration, and parameters generated during screening.

[0015] Compared with the prior art, the beneficial effect of the present invention is that: in the pretreatment stage of the sediment, the present invention preliminarily determines the dehydration time according to the sediment quality and humidity, and judges 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, and the precision and orientation of the sediment treatment are realized. 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 the target particle size sediment through multiple sampling, and it 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 the fluctuations in sediment characteristics and changes in the screening process in real time, continuously optimize the screening effect, and ensure the stable and reliable quality of the final product. In addition, this method uses 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 mud resource utilization, and is of great significance to promoting environmental protection and sustainable development of resources.

[0016] On the other hand, the present application also provides a system for resource utilization of riverbed mud, comprising: A collection 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 the dehydration time of the sediment according to the sediment mass and the sediment humidity, obtain the real-time humidity of the sediment after the sediment is dehydrated according to the dehydration time, record it as the first humidity, and judge whether to dehydrate the sediment again according to the first humidity; The dehydration adjustment module is 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 screen with a corresponding aperture according to the target use, 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 sediment with 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 sediment with target particle size in the screened material to obtain the final inclination angle.

[0017] It can be understood that the method and system for resource utilization of riverbed mud provided in this application have the same beneficial effects and will not be repeated here. Brief Description of the Drawings

[0018] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 is a flowchart of a method for the resource utilization of river bottom sediment provided by an embodiment of the present invention; Figure 2 is a functional block diagram of a system for the resource utilization of river bottom sediment provided by an embodiment of the present invention. Detailed Embodiments

[0019] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the 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 so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully communicated to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention 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 drawings and in combination with the embodiments.

[0020] In some embodiments of the present application, referring to Figure 1 as shown, this embodiment provides a method for the resource utilization of river bottom sediment, including the following steps: S100. Obtain the sediment parameters to be processed; wherein, the sediment parameters include sediment quality and sediment humidity; S200. Initially determine the dehydration duration of the sediment according to the sediment quality and sediment humidity. After dehydrating the sediment through the dehydration duration, obtain the real-time humidity of the sediment, denoted as the first humidity; S300. Judge whether to dehydrate the sediment again according to the first humidity. If it is judged that re-dehydration is required, calculate the humidity difference between the sediment humidity and the first humidity, and obtain the re-dehydration duration according to the humidity difference; S400. Select a sieve mesh with a corresponding aperture according to the target use, take multiple samples of the sediment after re-dehydration, obtain the proportion of the sediment with the target particle size, and control the inclination angle of the screening device according to the sediment proportion; S500. After screening for a preset time, judge whether to adjust the inclination angle of the screening device according to the proportion of the sediment with the target particle size in the oversize material. If it is judged to be adjusted, adjust the inclination angle according to the proportion of the sediment with the target particle size in the oversize material to obtain the final inclination angle.

[0021] It is understandable that in the pretreatment stage of the sediment, the present invention preliminarily determines the dehydration time according to 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, and the precision and orientation of the sediment treatment are realized. 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 the target particle size sediment through multiple sampling, and it 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 the fluctuations in sediment characteristics and changes in the screening process in real time, continuously optimize the screening effect, and ensure the stable and reliable quality of the final product. In addition, this method uses 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 mud resource utilization, and is of great significance to promoting environmental protection and sustainable development of resources.

[0022] Specifically, the screening equipment includes a vibrating screen and a drum screen.

[0023] 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: Calculating the similarity between the sediment mass and sediment humidity and the historical sediment mass and sediment humidity; 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.

[0024] 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 changeable 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: ; In the above formula, S represents the similarity, Mc represents the sediment quality, Mh represents the historical sediment quality, Hc represents the sediment humidity, and Hh represents the historical sediment humidity.

[0025] In some embodiments of the present application, when determining whether to dehydrate the sediment again according to the first humidity, it includes: Set the standard humidity after dehydration. If the first humidity is less than or equal to the standard humidity after dehydration, it is determined that the sediment does not need to be dehydrated again; If the first humidity is greater than the standard humidity after dehydration, it is determined that the sediment needs to be dehydrated again.

[0026] In some embodiments of the present application, when it is determined that re - dehydration is required, calculating the humidity difference between the sediment humidity and the first humidity, and obtaining the re - dehydration duration according to the humidity difference, it includes: Calculate the humidity difference between the sediment humidity and the first humidity, and calculate the humidity distance difference between the first humidity and the standard humidity after dehydration; Calculate the ratio of the humidity difference to the humidity distance difference, and obtain the re - dehydration duration according to the ratio; Set the minimum value of the re - dehydration duration, and calculate the re - dehydration duration through the following formula: T = T0×(△D / △H)+T1; In the above formula, T represents the re - dehydration duration, T0 represents the dehydration duration, △D represents the humidity distance difference, △H represents the humidity difference, and T1 represents the minimum value of the re - dehydration duration.

[0027] It can be understood that the present invention realizes precise control of the dehydration process by establishing a multi - level humidity evaluation system. First, by setting an objective benchmark of the standard humidity after dehydration, the re - dehydration judgment has a clear quantitative standard, avoiding the subjectivity and uncertainty of empirical judgment in traditional methods. Secondly, a dual - calculation mechanism of humidity difference and humidity distance difference is introduced, and the re - dehydration duration is dynamically determined through the ratio relationship between the two. This method can more accurately reflect the actual dehydration demand, avoiding both the energy waste caused by over - dehydration and ensuring the expected 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 calculation method has an adaptive characteristic, which can automatically adjust parameters according to the characteristics of different sediments and the initial dehydration effect, greatly improving the processing efficiency and stability. By setting the minimum value of the re - dehydration duration T1, it not only ensures the basic dehydration treatment effect but also prevents invalid dehydration operations caused by too small calculated values. Overall, this method realizes the intelligent control of the dehydration process and provides a reliable technical guarantee for the resource utilization of river sediment.

[0028] In some embodiments of the present application, when selecting a screen with a corresponding aperture according to the target use, it includes: Obtain the target use of the sediment and obtain the maximum particle size of the sediment required for the target use; Select a screen with a corresponding aperture according to the maximum sediment particle size.

[0029] It can be understood that by obtaining the target use of the sediment and the maximum required particle size to select the screen, the requirements of different application scenarios can be accurately matched. In building material production, clarifying the maximum required particle size can avoid problems such as overly large or small particles caused by inappropriate screen apertures, ensure that the sediment particles meet the building material production standards, and improve product quality; in the soil improvement scenario, accurate selection of the screen aperture can ensure that after the sediment is mixed with the soil, the soil structure and fertility can be effectively improved, achieving directional optimization. At the same time, this method reduces the repeated screening and resource waste caused by improper screen selection, greatly improves the sediment treatment efficiency, reduces production costs, and provides a scientific and efficient technical path for the resource utilization of river sediment.

[0030] Specifically, in a river dredging project in a certain city, part of the sediment is planned to be used for making environmentally friendly permeable bricks. The engineering personnel first clarify that the maximum particle size of the sediment required for the production of environmentally friendly permeable bricks is 1.2 mm, which is to ensure good water permeability and structural strength after the bricks are formed. Subsequently, based on this data, a screen with an aperture of 1.2 mm is selected to screen the sediment after re-dewatering. During the screening process, impurities and particles in the sediment with a particle size greater than 1.2 mm are effectively intercepted, while the qualified particles pass through the screen smoothly and enter the subsequent brick-making process. Finally, the produced environmentally friendly permeable bricks meet all performance indicators, not only realizing the resource utilization of river sediment but also solving the problem of treating dredged sediment.

[0031] In some embodiments of the present application, when taking multiple samples of the sediment after re-dewatering to obtain the proportion of the sediment with the target particle size and controlling the tilt angle of the screening equipment according to the sediment proportion, it includes: Calculate the average value of the sediment proportion in the samples taken multiple times, and control the tilt angle of the screening equipment according to the average value of the sediment proportion; Set a proportion interval. If the average value of the sediment proportion is less than the minimum value of the proportion interval, use the first tilt angle; If the average value of the sediment proportion is within the proportion interval, use the second tilt angle; If the average value of the sediment proportion is greater than the maximum value of the proportion interval, use the third tilt angle; The first tilt angle is greater than the second tilt angle, and the second tilt angle is greater than the third tilt angle.

[0032] It is understandable that the present invention uses the average value as the control basis, effectively avoiding the errors caused by the fluctuations of single-sampling data, and can more truly reflect the overall particle size distribution of the sediment. By dividing the proportion intervals and corresponding to different inclination angles, the complex screening control logic is transformed into standardized and quantifiable operation rules, which is convenient for operators to respond quickly and for the automatic operation of the equipment. When the average proportion of the sediment is low, increasing the inclination angle can accelerate the screening process and improve the efficiency; when it is in the appropriate interval, a moderate angle is adopted to ensure the screening quality; when it is higher than the upper limit of the interval, the angle is reduced for fine screening to ensure that the particle size of the screened sediment meets the requirements of the target use. This method not only improves the screening efficiency, but also guarantees the product quality, reduces the rework cost caused by improper angle adjustment, and realizes the efficient and precise control of the screening link in the resource utilization of river sediment.

[0033] Specifically, in a project of resource utilization of river sediment, it is planned to use the sediment to make building bricks, the target particle size is 0.5 - 1.5 mm, and the set proportion interval of the sediment with the target particle size is 85% - 95%. The sediment after re-dehydration is sampled 5 times, and the proportions of the sediment with the target particle size measured are 82%, 84%, 81%, 83%, and 80% respectively. The average value is calculated to be 82%, which is less than the minimum value 85% of the proportion interval. According to the control rule, the inclination angle of the screening equipment is automatically adjusted to the first inclination angle of 25° (larger than the conventional angle), which speeds up the flow rate of the sediment on the screen and enables more sediment with the target particle size to pass through the screen.

[0034] In some embodiments of the present application, after the preset screening time, when judging whether to adjust the inclination angle of the screening equipment according to the proportion of the sediment with the target particle size in the oversize, it includes: Obtain the proportion of the sediment with the target particle size in the oversize and set a proportion threshold; If the proportion of the sediment with the target particle size in the oversize is less than the proportion threshold, it is judged not to adjust the inclination angle of the screening equipment; If the proportion of the sediment with the target particle size in the oversize is greater than or equal to the proportion threshold, it is judged to adjust the inclination angle of the screening equipment.

[0035] In some embodiments of the present application, when adjusting the inclination angle according to the proportion of the sediment with the target particle size in the oversize to obtain the final inclination angle, it includes: Calculate the proportion difference between the proportion of the sediment with the target particle size in the oversize and the proportion threshold, and preset a difference interval; If the proportion difference is greater than the maximum value of the difference interval, adjust the inclination angle through a first adjustment coefficient; If the proportion difference is within the difference interval, adjust the inclination angle through a second adjustment coefficient; If the proportion difference is less than the minimum value of the difference range, the tilt angle is adjusted by a third adjustment coefficient; Among them, 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.

[0036] It can be understood that by setting a proportion threshold to judge whether to adjust the angle, unnecessary changes in equipment parameters can be avoided, mechanical losses and energy waste can be reduced, and at the same time, the screening process can be ensured to proceed under stable conditions. When the proportion of the bottom mud with the target particle size in the oversize material reaches or exceeds the threshold, further adjust the angle by calculating the proportion difference and based on the difference range and the adjustment coefficient, realizing the hierarchical and precise adjustment of the tilt angle. Different adjustment coefficients correspond to different proportion difference situations, enabling the equipment to dynamically and reasonably adjust the tilt angle according to the deviation degree of the actual screening effect, ensuring both the screening efficiency and the precise control of the bottom mud 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 high efficiency and stability of the screening link in the process of river bottom mud resource utilization, and provides a reliable guarantee for producing high-quality resource products.

[0037] Specifically, set the proportion threshold of the bottom mud with the target particle size (0.2 - 0.8 mm) in the oversize material to 15%, the difference range to 15% - 25%, the first adjustment coefficient to 0.9, the second adjustment coefficient to 0.95, and the third adjustment coefficient to 0.98. After the preset screening time ends, it is detected that the proportion of the bottom mud with the target particle size in the oversize material is 28%, which is greater than the proportion threshold of 15%, and the angle needs to be adjusted. Calculate the proportion difference as 28% - 15% = 13%, and since this difference is less than the minimum value of the difference range of 15%, the current tilt angle (assumed to be 20°) is adjusted by the third adjustment coefficient of 0.98, and the adjusted final tilt angle is 20° × 0.98 = 19.6°. After adjustment, continue the screening, and it is detected again that the proportion of the bottom mud with the target particle size in the oversize material gradually tends to be within a reasonable range, making the particle size of the ceramsite production raw material more in line with the requirements, effectively improving the quality and production efficiency of the ceramsite product, and successfully realizing the efficient resource utilization of the river bottom mud.

[0038] In some embodiments of the present application, the method for resource utilization of river bottom mud further includes: Sum the duration of the second dehydration and the dehydration duration to obtain the total dehydration duration; Take the average of the tilt angle before adjustment and the final tilt angle to obtain the reference tilt angle; Store the bottom mud parameters, total dehydration duration, reference tilt angle, parameters generated during dehydration, and parameters generated during screening.

[0039] It is understandable that the total dehydration duration is obtained by summing the re - dehydration duration and the dehydration duration, and the reference tilt angle is obtained by averaging the tilt angle before adjustment and the final tilt angle, and the data storage method for various parameters significantly improves the data management and analysis capabilities in the process of river sediment resource utilization. The statistics of the total dehydration duration provide a direct duration reference basis for subsequent treatment of the same type of sediment, facilitating operators to estimate the treatment cycle, reasonably arrange the production plan, and improve the overall work efficiency; the calculation of the reference tilt angle integrates the information on angle adjustment during the screening process, providing key data for optimizing the operating parameters of the screening equipment, which helps to improve the screening effect and equipment stability. And the comprehensive storage of sediment parameters and various parameters generated during dehydration and screening constructs a complete data resource library.

[0040] On the other hand, referring to Figure 2 As shown, the present application also provides a river sediment resource utilization system for applying the above - mentioned river sediment resource utilization method, including: A collection module configured to obtain the sediment parameters to be processed; wherein, the sediment parameters include sediment quality and sediment humidity; A dehydration judgment module configured to preliminarily determine the dehydration duration of the sediment according to the sediment quality and sediment humidity, obtain the real - time humidity of the sediment, denoted as the first humidity, after dehydrating the sediment through the dehydration duration, and judge whether to re - dehydrate the sediment according to the first humidity; A dehydration adjustment module configured to, if it is determined that re - dehydration is required, calculate the humidity difference between the sediment humidity and the first humidity, and obtain the re - dehydration duration according to the humidity difference; A screening judgment module configured to select a sieve mesh with a corresponding aperture according to the target use, take multiple samples of the sediment after re - dehydration, obtain the proportion of the sediment with the target particle size, and control the tilt angle of the screening equipment according to the sediment proportion; A screening adjustment module configured to, after screening for a preset time, judge whether to adjust the tilt angle of the screening equipment according to the proportion of the sediment with the target particle size in the over - size material, and if it is judged to be adjusted, adjust the tilt angle according to the proportion of the sediment with the target particle size in the over - size material to obtain the final tilt angle.

[0041] It can be understood that through the modular architecture design, the river sediment resource utilization system disassembles the complex treatment process into sub-modules with clear functions, greatly improving the operability, stability and scalability of the system. The acquisition module accurately obtains sediment parameters, providing reliable data support for subsequent treatment; the dehydration judgment module and the dehydration adjustment module cooperate to dynamically adjust the dehydration strategy according to the sediment humidity, realizing the refined control of the dehydration process and avoiding resource waste; the screening judgment module and the screening adjustment module, based on the target use and screening effect, intelligently regulate the screen aperture and the inclination angle of the equipment to ensure the accuracy and efficiency of sediment screening. Each module has a clear division of labor and cooperates with each other, not only reducing the difficulty of system development and maintenance, but also forming a closed-loop treatment system through data interaction to realize the automated and intelligent management of the whole process of river sediment resource utilization, effectively improving the treatment efficiency and quality, reducing manual intervention and operation errors, providing reliable technical support for large-scale and standardized river sediment treatment, and strongly promoting the industrial development of river sediment resource utilization.

[0042] Furthermore, the resource utilization of sediment includes multi-stage screening utilization. The environmental benefits of the recyclable materials screened out and the recycled materials produced during the sediment resource treatment process include the environmental benefits brought by using the stones screened out from the sediment to replace stone production, the sand screened out from the sediment to replace sand production, and the environmental benefits brought by using the clay screened out from the sediment to prepare non-burned bricks to replace ordinary sintered bricks and preparing sponge soil to reduce the use of sand.

[0043] Specifically, resource utilization is an important development direction for 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: Composting treatment: Compost the sediment. The typical process flow includes screening, granulation, packaging and shipment of the compost clinker. The screening system can not only return the materials with appropriate particle size to the mixing and blending process to improve the composting efficiency by improving the compost structure, but also classify the materials under the screen, directly package and ship the materials with qualified particle size, and granulate the materials with too fine particle size to improve the quality. In this process, it is necessary to reasonably select screening and granulation equipment. For example, when using an extrusion granulator for sludge composting materials, the moisture content should be controlled at 35%. Flat die granulation is more suitable than ring die granulation, so as to produce compost products that meet market demand and are used in fields such as soil improvement and fertilizers.

[0044] Co-processing in cement kiln: Due to the similar chemical characteristics between domestic sludge and cement raw materials, the co-processing of bottom sludge in cement kiln can be utilized. First, the wet sludge with a water content of 80% is dried into semi-dry sludge with a water content of less than 30% by means of the waste heat of the cement kiln flue gas, and then it is added into the kiln for incineration and solidification through a screw feeder, or mixed into the cement raw materials and put into the kiln. The residue can replace clay as siliceous and aluminous raw materials. It is also possible to directly send the sludge with a water content of 80% into the cement kiln tail by a hydraulic sludge pump and spray it into the kiln for incineration with an atomizing spray gun, but this method is prone to causing temperature fluctuations at the kiln tail. In a high-temperature environment, the organic matters and pathogens in the bottom sludge are fully calcined, and the heavy metals are melted and solidified in the crystal of cement clinker minerals. Moreover, the rotary kiln has a large heat capacity and a large processing capacity, which can effectively realize the resource utilization of bottom sludge.

[0045] Other utilization methods: For the ash residue after the incineration of bottom sludge, if the heavy metal content meets the standards, it can directly enter the landfill or enter the landfill after being treated with a heavy metal chelating agent; it can also be used as building materials for road paving, brick making, etc., to realize the reuse of bottom sludge, reduce the dependence on natural materials, and reduce the impact of waste on the environment.

[0046] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0047] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of processes and / or blocks in the flowchart and / or block diagram can also be implemented. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0048] These computer program instructions can 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 generate a manufactured product including an instruction device, and the instruction device realizes the functions in Figure 1 one process or multiple processes and / or blocks Figure 1The functions specified in one or more boxes.

[0049] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide for implementing the steps of the functions specified in one Figure 1 one process or more processes and / or boxes Figure 1 or more boxes.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A method for resource utilization of river bottom sediment, characterized in that, Including: Obtain the sediment parameters to be processed; wherein, the sediment parameters include sediment quality and sediment humidity; Preliminarily determine the dehydration duration of the sediment according to the sediment quality and sediment humidity. After dehydrating the sediment through the dehydration duration, obtain the real-time humidity of the sediment, denoted as the first humidity; Judge whether to dehydrate the sediment again according to the first humidity. If it is judged that re-dehydration is required, calculate the humidity difference between the sediment humidity and the first humidity, and obtain the re-dehydration duration according to the humidity difference; Select a sieve mesh with a corresponding aperture according to the target use, take multiple samples of the sediment after re-dehydration, obtain the proportion of the sediment with the target particle size, and control the tilt angle of the screening equipment according to the sediment proportion; After screening for a preset time, judge whether to adjust the tilt angle of the screening equipment according to the proportion of the sediment with the target particle size in the oversize material. If it is judged to be adjusted, adjust the tilt angle according to the proportion of the sediment with the target particle size in the oversize material to obtain the final tilt angle.

2. The resource utilization method for river sediment according to claim 1, wherein When preliminarily determining the dehydration duration of the sediment according to the sediment quality and sediment humidity, it includes: Calculate the similarity between the sediment quality and sediment humidity and the historical sediment quality and historical sediment humidity; According to the similarity, obtain the total dehydration duration corresponding to the maximum similarity value in the historical data, and use the total dehydration duration as the dehydration duration of the sediment.

3. The resource utilization method for river bottom sludge according to claim 2, wherein When judging whether to dehydrate the sediment again according to the first humidity, it includes: Set the standard humidity after dehydration. If the first humidity is less than or equal to the standard humidity after dehydration, judge that it is not necessary to dehydrate the sediment again; If the first humidity is greater than the standard humidity after dehydration, judge that it is necessary to dehydrate the sediment again.

4. The resource utilization method for riverbed sediment according to claim 3, characterized in that, When it is judged that re-dehydration is required, calculate the humidity difference between the sediment humidity and the first humidity, and obtain the re-dehydration duration according to the humidity difference, it includes: Calculate the humidity difference between the sediment humidity and the first humidity, and calculate the humidity distance difference between the first humidity and the standard humidity after dehydration; Calculate the ratio of the humidity difference to the humidity distance difference, and obtain the re-dehydration duration according to the ratio; Set the minimum value of the re-dehydration duration, and calculate the re-dehydration duration through the following formula: T = T0×(△D / △H) + T1; In the above formula, T represents the re-dehydration duration, T0 represents the dehydration duration, △D represents the humidity distance difference, △H represents the humidity difference, and T1 represents the minimum value of the re-dehydration duration.

5. The resource utilization method for river sediment according to claim 4, characterized in that, When selecting a sieve mesh with a corresponding aperture according to the target use, it includes: Obtain the target use of the sediment, and obtain the maximum sediment particle size required for the target use; Select a sieve mesh with a corresponding aperture according to the maximum sediment particle size.

6. The resource utilization method for river bottom sludge according to claim 5, characterized in that, When taking multiple samples of the sediment after re-dehydration, obtaining the proportion of the sediment with the target particle size, and controlling the tilt angle of the screening equipment according to the sediment proportion, it includes: Calculate the average value of the sediment proportion in the samples taken multiple times, and control the tilt angle of the screening equipment according to the average value of the sediment proportion; Set a proportion interval. If the average value of the sediment proportion is less than the minimum value of the proportion interval, adopt the first tilt angle; If the average value of the sediment proportion is within the proportion interval, adopt the second tilt angle; If the average value of the proportion of the bottom mud is greater than the maximum value of the proportion range, 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 river sediment according to claim 6, characterized in that When judging whether to adjust the inclination angle of the screening device according to the proportion of the bottom mud with the target particle size in the oversize after the preset screening time, it includes: Obtain the proportion of the bottom mud with the target particle size in the oversize and set a proportion threshold; If the proportion of the bottom mud with the target particle size in the oversize is less than the proportion threshold, it is judged that the inclination angle of the screening device is not adjusted; If the proportion of the bottom mud with the target particle size in the oversize is greater than or equal to the proportion threshold, it is judged that the inclination angle of the screening device is adjusted.

8. The resource utilization method for river sediment according to claim 7, characterized in that When adjusting the inclination angle according to the proportion of the bottom mud with the target particle size to obtain the final inclination angle, it includes: Calculate the proportion difference between the proportion of the bottom mud with the target particle size in the oversize and the proportion threshold, and preset a difference range; If the proportion difference is greater than the maximum value of the difference range, adjust the inclination angle by the first adjustment coefficient; If the proportion difference is within the difference range, adjust the inclination angle by the second adjustment coefficient; If the proportion difference is less than the minimum value of the difference range, adjust the inclination angle by the third adjustment coefficient; Wherein, 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 inclination angle is the product value of the inclination angle before adjustment and the adjustment coefficient.

9. The resource utilization method for river sediment according to claim 8, characterized in that, The resource utilization method for river bottom mud further includes: Sum the duration of re-dehydration and the duration of dehydration to obtain the total dehydration duration; Take the average of the inclination angle before adjustment and the final inclination angle to obtain a reference inclination angle; Store the bottom mud parameters, the total dehydration duration, the reference inclination angle, the parameters generated during dehydration, and the parameters generated during screening.

10. A resource utilization system for riverbed sediment, which is used to apply the resource utilization method for riverbed sediment according to any one of claims 1-9, characterized in that, It includes: A collection module configured to obtain the bottom mud parameters to be processed; wherein, the bottom mud parameters include the bottom mud quality and the bottom mud humidity; A dehydration judgment module configured to preliminarily determine the dehydration duration of the bottom mud according to the bottom mud quality and the bottom mud humidity. After dehydrating the bottom mud through the dehydration duration, obtain the real-time humidity of the bottom mud, denoted as the first humidity, and judge whether to re-dehydrate the bottom mud according to the first humidity; A dehydration adjustment module configured to, if it is judged that re-dehydration is required, calculate the humidity difference between the bottom mud humidity and the first humidity, and obtain the re-dehydration duration according to the humidity difference; A screening judgment module configured to select a sieve mesh with a corresponding aperture according to the target use, take multiple samples of the bottom mud after re-dehydration, obtain the proportion of the bottom mud with the target particle size, and control the inclination angle of the screening device according to the proportion of the bottom mud; A screening adjustment module configured to, after the preset screening time, judge whether to adjust the inclination angle of the screening device according to the proportion of the bottom mud with the target particle size in the oversize. If it is judged to be adjusted, adjust the inclination angle according to the proportion of the bottom mud with the target particle size in the oversize to obtain the final inclination angle.

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