A mud separation and treatment system

Abstract

This utility model discloses a sludge separation and treatment system, including a sludge pretreatment unit and a solid-liquid separation unit. The sludge pretreatment unit includes a vibrating screen and an equalization tank, with the output end of the vibrating screen connected to the equalization tank. The solid-liquid separation unit includes a sedimentation tank, a thickening tank, a flocculant addition device, a centrifuge, and a filter press. The output end of the equalization tank is connected to the sedimentation tank, where solid particles settle naturally. The output end of the sedimentation tank is connected to the thickening tank, where flocculants are added to coagulate fine particles into larger particles, accelerating the settling speed. The output end of the thickening tank is connected to the centrifuge, and the output end of the centrifuge is connected to the filter press. The filter press applies pressure to the sludge, squeezing water out of the filter cloth, thereby achieving solid-liquid separation. This utility model improves sedimentation efficiency, reduces the potential environmental hazards of sludge, lays a solid foundation for efficient solid-liquid separation, and greatly enhances the stability and reliability of sludge separation and treatment.

Description

Technical Field

[0001] This utility model relates to the field of mud separation and treatment, specifically to a mud separation and treatment system. Background Technology

[0002] The amount of mud generated during numerous industrial production activities and construction processes is considerable. For example, large quantities of mud are generated during oil drilling, mining, and building piling. Direct discharge of this mud without proper treatment will not only cause serious pollution to the surrounding soil and water bodies, but may also lead to a series of environmental problems such as river blockage and soil compaction, while also failing to meet the stringent requirements of environmental regulations. Currently, common mud treatment methods include simple sedimentation, which relies on gravity to allow solid particles in the mud to settle naturally. However, this method is not very effective at settling fine particles, and the treated mud still contains a large number of suspended particles, making it difficult to achieve ideal solid-liquid separation. Some methods use filtration to treat mud, but ordinary filtration devices are easily clogged by impurities in the mud, resulting in low filtration efficiency and frequent replacement of filter components, increasing treatment costs and maintenance workload. Furthermore, existing technologies often lack a comprehensive and meticulous pretreatment process for the sludge. Large particles in the sludge can easily cause wear and blockages in subsequent treatment equipment. Simultaneously, if parameters such as pH, temperature, and concentration of the sludge do not meet the requirements of subsequent treatment, it will significantly impact the treatment effect and efficiency. In addition, existing treatment methods struggle to achieve efficient dewatering and deep purification of the sludge and wastewater after solid-liquid separation, failing to meet the requirements for easy transportation and disposal of sludge and compliant discharge or reuse of wastewater. Therefore, developing an efficient, reliable, and comprehensive sludge separation and treatment system is of significant practical importance and urgency. Utility Model Content

[0003] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a mud separation and treatment system, which is a highly efficient, reliable and comprehensive mud separation and treatment system. It improves sedimentation efficiency, reduces the potential harm of sludge to the environment, greatly improves the effect and efficiency of solid-liquid separation, can more thoroughly separate solids and liquids in mud, and can greatly improve the stability and reliability of mud separation and treatment.

[0004] This utility model is implemented by constructing a mud separation and treatment system, characterized in that:

[0005] This includes a mud pretreatment unit and a solid-liquid separation unit;

[0006] The mud pretreatment unit includes a vibrating screen for removing large particulate impurities from the mud and an adjustment tank for adjusting the mud, with the output end of the vibrating screen connected to the adjustment tank.

[0007] The solid-liquid separation unit includes a sedimentation tank, a thickening tank, a flocculant addition device, a centrifuge, and a filter press. The output end of the adjustment tank is connected to the sedimentation tank, where solid particles settle naturally. The output end of the sedimentation tank is connected to the thickening tank. The flocculant addition device is connected to the thickening tank, where flocculant is added to cause fine particles to agglomerate into larger particles, thereby accelerating the settling speed.

[0008] The output end of the concentration tank is connected to a centrifuge. The centrifuge generates centrifugal force through high-speed rotation, causing solid particles to separate under the action of centrifugal force.

[0009] The centrifuge's output end is connected to a filter press, which achieves solid-liquid separation by applying pressure to the slurry to squeeze water out of the filter cloth.

[0010] According to the present invention, a mud separation and treatment system is characterized in that: large particulate impurities, such as sand and wood chips, are removed from the mud by the vibrating screen to prevent these impurities from entering subsequent processing equipment and causing wear or blockage.

[0011] According to the present invention, a mud separation and treatment system is characterized in that: the adjustment tank is divided into three parts: a mud pH adjustment tank, a mud temperature adjustment tank, and a mud concentration adjustment tank; used to adjust parameters such as pH value, temperature, and concentration of the mud to make them suitable for subsequent treatment; the three parts of the mud pH adjustment tank, mud temperature adjustment tank, and mud concentration adjustment tank are connected in sequence.

[0012] According to the sludge separation and treatment system of this utility model, the sludge output end of the filter press is connected to a sludge dewatering device. The sludge after solid-liquid separation still contains a high moisture content and needs further dewatering treatment to reduce its moisture content, facilitating transportation and disposal. The dewatering device includes a vacuum filtration device, a belt filter press, and a plate and frame filter press.

[0013] According to the sludge separation and treatment system of this utility model, the water output ends of the sedimentation tank, thickening tank, centrifuge, and filter press are respectively connected to a sewage storage tank via pipelines. A water purification device is connected to the outside of the sewage storage tank. The liquid in the solid-liquid separation process may still contain some fine particles and dissolved substances, requiring further purification treatment. Methods such as filtration, adsorption, and chemical precipitation can be used to remove impurities, heavy metal ions, and organic matter from the water, so that the water quality meets discharge standards or reuse requirements.

[0014] This utility model has the following advantages: (1) Comprehensive and efficient pretreatment: This application removes large particulate impurities such as sand and wood chips from the mud by setting up a vibrating screen, effectively preventing these impurities from entering the subsequent treatment equipment, significantly reducing the risk of equipment wear and blockage, extending the service life of the equipment, and reducing maintenance costs. At the same time, the adjustment tank is divided into a mud pH adjustment tank, a mud temperature adjustment tank, and a mud concentration adjustment tank, which can finely adjust the parameters such as pH value, temperature, and concentration of the mud to ensure that it is in the optimal range suitable for subsequent treatment, laying a solid foundation for efficient solid-liquid separation and greatly improving the stability and reliability of the entire treatment system. (2) Efficient solid-liquid separation process: In the solid-liquid separation unit, the sedimentation tank realizes the natural sedimentation of solid particles, and the thickening tank, together with the flocculant addition equipment, makes the fine particles aggregate into larger particles, greatly accelerating the sedimentation speed and improving the sedimentation efficiency. The centrifuge uses the powerful centrifugal force generated by high-speed rotation to further efficiently separate solid particles, while the filter press squeezes out water by applying pressure to achieve deep solid-liquid separation. This multi-stage, coordinated solid-liquid separation method greatly improves the effect and efficiency of solid-liquid separation compared with traditional single treatment methods, and can more thoroughly separate the solids and liquids in the sludge. (3) Improved sludge post-treatment: The sludge output end of the filter press is connected to the sludge dewatering device for further dewatering of sludge that still contains high moisture content after solid-liquid separation. By using various dewatering devices such as vacuum filtration equipment, belt filter press, and plate and frame filter press, the water content of sludge can be effectively reduced to meet the requirements of easy transportation and disposal, reducing the difficulty and cost of sludge post-treatment and reducing the potential harm of sludge to the environment. (4) Deep sewage purification: The water output ends of the sedimentation tank, thickening tank, centrifuge, and filter press are all connected to the sewage storage tank and external water purification device. By employing multiple methods such as filtration, adsorption, and chemical precipitation, it is possible to effectively remove residual fine particles, heavy metal ions, organic matter, and other impurities from wastewater, enabling the water quality to meet discharge standards or reuse requirements, achieving effective recycling of water resources, reducing the pollution of the environment caused by wastewater discharge, and also conforming to the concept of sustainable development, thus having significant environmental and economic benefits. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the system in this application;

[0016] Figure 2 This is a structural diagram of the conditioning tank used to adjust the mud in this application.

[0017] The system includes: a vibrating screen 1, an adjustment tank 2, a pH adjustment tank 2-1, a sludge temperature adjustment tank 2-2, a sludge concentration adjustment tank 2-3, a sedimentation tank 3, a thickening tank 4, a flocculant addition device 5, a centrifuge 6, a filter press 7, a sludge dewatering device 8, a wastewater storage tank 9, and a water purification device 10. Detailed Implementation

[0018] The following will be combined with the appendix Figures 1-2 This utility model will be described in detail, and the technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] This utility model provides a mud separation and treatment system, such as Figures 1-2 As shown, it can be implemented in the following manner;

[0020] This includes a mud pretreatment unit and a solid-liquid separation unit;

[0021] The mud pretreatment unit includes a vibrating screen 1 for removing large particulate impurities from the mud and an adjustment tank 2 for adjusting the mud, with the output end of the vibrating screen 1 connected to the adjustment tank 2.

[0022] The solid-liquid separation unit includes a sedimentation tank 3, a thickening tank 4, a flocculant addition device 5, a centrifuge 6, and a filter press 7. The output end of the adjustment tank 2 is connected to the sedimentation tank 3, where solid particles settle naturally. The output end of the sedimentation tank 3 is connected to the thickening tank 4. The flocculant addition device 5 is connected to the thickening tank 4, where flocculant is added to the thickening tank 4 to coagulate fine particles into larger particles, thereby accelerating the settling speed.

[0023] The output end of the thickening tank 4 is connected to the centrifuge 6. The centrifuge 6 generates centrifugal force through high-speed rotation, causing solid particles to separate under the action of centrifugal force.

[0024] The output end of the centrifuge 6 is connected to the filter press 7, which applies pressure to the slurry to squeeze water out of the filter cloth, thereby achieving solid-liquid separation.

[0025] During the implementation of this system, the vibrating screen 1 removes large particles of impurities from the mud, such as sand and wood chips, to prevent these impurities from entering subsequent processing equipment and causing wear or blockage.

[0026] During the implementation of this system, the adjustment tank 2 is divided into three parts: mud pH adjustment tank 2-1, mud temperature adjustment tank 2-2, and mud concentration adjustment tank 2-3; used to adjust parameters such as pH value, temperature, and concentration of mud to make them suitable for subsequent treatment; the three parts of mud pH adjustment tank 2-1, mud temperature adjustment tank 2-2, and mud concentration adjustment tank 2-3 are connected in sequence.

[0027] During the implementation of this system, the sludge output end of the filter press 7 is connected to the sludge dewatering device 8. The sludge after solid-liquid separation still contains a high moisture content and needs to be further dewatered by the dewatering device to reduce the moisture content of the sludge for easier transportation and disposal. The dewatering device includes vacuum filtration equipment, belt filter press, and plate and frame filter press.

[0028] During the implementation of this system, the water output terminals of sedimentation tank 3, thickening tank 4, centrifuge 6, and filter press 7 are connected to wastewater storage tank 9 via pipelines. Wastewater storage tank 9 is externally connected to water purification device 10. The liquid produced during the solid-liquid separation process may still contain some fine particles and dissolved substances, requiring further purification treatment. Methods such as filtration, adsorption, and chemical precipitation can be used to remove impurities, heavy metal ions, and organic matter from the water, ensuring the water quality meets discharge standards or reuse requirements.

[0029] The following describes the mud separation and treatment process using this system;

[0030] (1) Mud pretreatment stage:

[0031] Removal of large particles: The slurry to be treated is introduced into vibrating screen 1. Vibrating screen 1 is turned on, and the slurry flows on the screen mesh through high-frequency vibration. Large particles in the slurry, such as sand, gravel, and wood chips, cannot pass through the screen mesh and are intercepted above the screen mesh, thus achieving initial separation from the main body of the slurry. The slurry after the separation of large particles flows into the conditioning tank 2 from the output end of vibrating screen 1.

[0032] Mud Parameter Adjustment: The mud flowing into the adjustment tank 2 first enters the mud pH adjustment tank 2-1. Based on the initial pH value of the mud and the pH requirements of subsequent treatment processes, appropriate acid or alkali solutions are added to the tank, and the mud is thoroughly stirred using a stirring device to bring the pH value to a suitable range. The pH-adjusted mud flows into the mud temperature adjustment tank 2-2, where heating or cooling equipment, such as heat exchangers or refrigeration units, is used to adjust the mud temperature to a suitable level for subsequent treatment. Finally, the mud enters the mud concentration adjustment tank 2-3, where the mud concentration is adjusted to the ideal state by adding clean water or mud concentrate. After parameter adjustment, the mud flows out from the output end of the adjustment tank 2, ready to enter the solid-liquid separation unit.

[0033] (2) Solid-liquid separation stage:

[0034] Natural sedimentation: The pretreated sludge enters sedimentation tank 3. In sedimentation tank 3, the sludge is in a relatively static state, and larger solid particles begin to settle naturally to the bottom of the tank due to gravity. After a certain period of sedimentation, the supernatant flows from the outlet of sedimentation tank 3 into thickening tank 4.

[0035] Flocculation and sedimentation: In thickening tank 4, flocculant addition device 5 is activated, adding flocculant to the slurry in thickening tank 4 according to a preset ratio. The flocculant quickly reacts chemically with the fine particles in the slurry, causing the fine particles to aggregate into larger particles, thus accelerating the settling speed. After flocculation and sedimentation treatment, most of the solid particles in the slurry settle to the bottom of the tank, and the supernatant enters the next treatment process.

[0036] Centrifugal separation: The slurry containing a large number of solid particles at the bottom of the thickening tank 4 is conveyed to the centrifuge 6. After the centrifuge 6 is started, it rotates at high speed, generating a strong centrifugal force. Under the action of centrifugal force, the solid particles in the slurry are thrown against the inner wall of the centrifuge 6, while the liquid is discharged through a specific outlet of the centrifuge 6. The separated solid particles are discharged from the slag discharge port of the centrifuge 6 and enter the subsequent filter press 7.

[0037] Filter press dewatering: Solid particles and a small amount of residual liquid discharged from centrifuge 6 enter filter press 7. Filter press 7 applies pressure to the slurry through a hydraulic device or other power device, forcing the water in the slurry to be squeezed out from the filter cloth, achieving further solid-liquid separation. After processing by filter press 7, the resulting filter cake is solid sludge with a significantly reduced water content, which is discharged from the sludge output end of filter press 7.

[0038] (3) Post-treatment stage of sludge: The sludge discharged from the filter press 7 enters the sludge dewatering device 8. If a vacuum filtration device is used, the sludge is transported to the filter medium of the vacuum filter. By creating a pressure difference through vacuuming, water is drawn through the filter medium and removed, and the sludge is further dewatered. If a belt filter press is used, the sludge is squeezed between two filter belts, and water is squeezed out. The plate and frame filter press uses the squeezing action of the plates and frames to deeply dewater the sludge. The sludge treated by the sludge dewatering device 8 has a significantly reduced moisture content, which facilitates subsequent transportation and disposal.

[0039] (4) Wastewater Treatment Stage: The liquid separated from the sedimentation tank 3, thickening tank 4, centrifuge 6, and filter press 7 flows into the wastewater storage tank 9 through pipelines via their respective water quality output terminals. The wastewater in the wastewater storage tank 9 is then transported to the water purification device 10. In the water purification device 10, fine particulate impurities in the wastewater are first removed by filtration equipment such as sand filters and precision filters. Then, adsorption materials such as activated carbon are used to adsorb organic matter and some heavy metal ions in the wastewater. For some pollutants that are difficult to remove by filtration and adsorption, chemical precipitation is used, and appropriate chemical agents are added to cause the pollutants to precipitate and separate from the wastewater. After a series of purification treatments, the water quality meets the discharge standards or reuse requirements and can be discharged or reused in the production process.

[0040] Sludge disposal - After dewatering, sludge can be disposed of in different ways depending on its properties and intended use. Examples include land reclamation, landfilling, incineration, or use as raw material for building materials.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mud separation and treatment system characterized by ； This includes a mud pretreatment unit and a solid-liquid separation unit; The mud pretreatment unit includes a vibrating screen (1) for removing large particulate impurities from the mud and an adjustment tank (2) for adjusting the mud. The output end of the vibrating screen (1) is connected to the adjustment tank (2). The solid-liquid separation unit includes a sedimentation tank (3), a thickening tank (4), a flocculant addition device (5), a centrifuge (6), and a filter press (7). The output end of the adjustment tank (2) is connected to the sedimentation tank (3), and the solid particles settle naturally in the sedimentation tank (3). The output end of the sedimentation tank (3) is connected to the thickening tank (4). The flocculant addition device (5) is connected to the thickening tank (4). Flocculant is added to the thickening tank (4) to make the fine particles agglomerate into larger particles and accelerate the settling speed. The output end of the thickening tank (4) is connected to the centrifuge (6). The centrifuge (6) generates centrifugal force through high-speed rotation, which separates the solid particles under the action of centrifugal force. The output end of the centrifuge (6) is connected to the filter press (7), which applies pressure to the slurry to squeeze water out of the filter cloth, thereby achieving solid-liquid separation.

2. The mud separation system of claim 1, wherein: The vibrating screen (1) removes large particles of impurities from the mud, such as sand and wood chips, to prevent these impurities from entering subsequent processing equipment and causing wear or blockage.

3. The mud separation and treatment system according to claim 1, characterized in that; The adjustment tank (2) is divided into three parts: mud pH adjustment tank (2-1), mud temperature adjustment tank (2-2), and mud concentration adjustment tank (2-3); it is used to adjust the pH value, temperature and concentration of mud to make it suitable for subsequent treatment; the three parts of mud pH adjustment tank (2-1), mud temperature adjustment tank (2-2) and mud concentration adjustment tank (2-3) are connected in sequence.

4. The mud separation and treatment system according to claim 1, characterized in that; The sludge output end of the filter press (7) is connected to the sludge dewatering device (8). The sludge after solid-liquid separation still contains a high moisture content and needs to be further dewatered by the dewatering device to reduce the moisture content of the sludge and facilitate transportation and disposal. The dewatering device includes vacuum filtration equipment, belt filter press, and plate and frame filter press.

5. The mud separation and treatment system according to claim 1, characterized in that; The water output ends of the sedimentation tank (3), thickening tank (4), centrifuge (6), and filter press (7) are connected to the sewage storage tank (9) through pipelines. The sewage storage tank (9) is connected to a water purification device (10). The liquid in the solid-liquid separation process may still contain some fine particles and dissolved substances, which need to be further purified.

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