A hydraulic engineering sludge wastewater treatment device

Abstract

The application relates to the technical field of wastewater treatment, in particular to a water conservancy engineering sludge wastewater treatment device.The technical scheme comprises a treatment pool composed of an outer shell and an inner shell, a plurality of sludge conveying pipes are communicated with the top of the treatment pool, the sludge conveying pipe comprises an analysis pipe, a laser particle size analyzer is arranged on the side of the analysis pipe, at least two electrode plates after corrosion treatment are arranged on the two sides of the cavity of the treatment pool, a coil shell is fixed to the outer side of the inner shell of the treatment pool, and the coil shell is provided with an electromagnetic coil.After sludge is input, the electrode plates are electrified to generate an electric field, the electric field can neutralize the electric charge on the surface of colloidal particles in the sludge, weaken the electrostatic repulsive force, and promote the mutual approach of the particles, the magnetic metal ions or the iron-containing colloidal particles in the sludge are subjected to the action of a magnetic field to make the magnetic metal ions or the iron-containing colloidal particles move directionally, the collision probability between the particles is increased, the combination of the two promotes the aggregation and flocculation of the particles, larger floc structures are formed, and then solid-liquid separation is realized under the action of gravity.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a device for treating sludge wastewater from water conservancy projects. Background Technology

[0002] Sludge wastewater from water conservancy projects is rich in water, complex organic matter, heavy metals, and microorganisms. The high water content of sludge makes it highly mobile, increasing the difficulty of treatment; the complex organic matter is prone to putrefaction and foul odors, and improper treatment can cause serious water and air pollution; the presence of heavy metals can lead to soil and water pollution, endangering the ecological balance; and the activity of microorganisms also places stringent requirements on the environmental conditions during the treatment process. Currently, traditional treatment devices cannot adequately address these characteristics of sludge, resulting in problems such as a single treatment process, low treatment efficiency, and difficulty in achieving standards for both the treated water and sludge, failing to meet the high standards of sludge wastewater treatment in water conservancy projects. Among these issues, low dewatering efficiency and high treatment costs are particularly prominent.

[0003] The initial moisture content of sludge is as high as 70%-95%. The colloidal particles and organic matter it contains form a stable structure, making it difficult for traditional mechanical dewatering methods (such as plate and frame filter presses and centrifugation) to reduce the moisture content to below 40%. This is because the colloidal particles carry a negative charge on their surface, which hinders dewatering through electrostatic repulsion. This problem leads to a significant increase in energy consumption for subsequent drying or incineration (energy costs increase by 5%-10% for every 1% reduction in moisture content), and transportation and landfill costs are also significantly increased due to the large volume of sludge. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a device for treating sludge and wastewater from water conservancy projects.

[0005] The technical solution of the present invention: a sludge wastewater treatment device for water conservancy projects, comprising a treatment tank composed of an outer shell and an inner shell, a plurality of sludge conveying pipes connected to the top of the treatment tank, the sludge conveying pipes including analysis pipes, and a laser particle size analyzer provided on the side of the analysis pipes; The outer shell has chambers on both sides, which are symmetrically arranged. Each chamber contains at least two corrosion-resistant electrode plates. A power distribution shell is fixed to the outside of the outer shell. The power distribution shell has slots on both sides that communicate with the chambers. The electrode plates have insulating terminal blocks that penetrate the slots and are located inside the power distribution shell. A hydraulic cylinder is fixedly installed inside the power distribution shell. One electrode plate is fixedly connected to the pushing end of the hydraulic cylinder through the insulating terminal block. A telescopic sealing gasket is fitted at the connection between the insulating terminal block and the hydraulic cylinder. The other electrode plate is fixed in the slot through the insulating terminal block. A coil shell is fixed to the outside of the inner shell. The coil shell contains an electromagnetic coil.

[0006] Preferably, a plurality of stirring rods are provided through the treatment tank, and stirring blades located inside the treatment tank are installed on the stirring rods. A motor for driving the stirring rods to rotate is fixed at the bottom of the outer shell, and the motor is provided with an antimagnetic outer shell.

[0007] Preferably, both sides of the electrode plate are provided with sludge removal devices located in the treatment tank. The sludge removal device includes a mounting plate located on the side of the electrode plate, a brush bristle fixed to the mounting plate in contact with the electrode plate, a mounting rod fixed between the two ends of the mounting plate, a connecting piece rotatably mounted on both ends of the mounting rod, one end of the connecting piece and the pushing piece being hinged together, and the other end of the pushing piece being fixed on the stirring rod.

[0008] Preferably, the dredging device further includes two mounting covers fixed in the treatment pool and distributed vertically. The pushing plate and the connecting plate are both located inside the mounting covers. Guide seats are fixed at both ends of the mounting rod. The mounting covers have guide grooves, and the guide seats are slidably installed in the guide grooves.

[0009] Preferably, the inner shell has an inner cavity, the bottom of the inner cavity has a notch that communicates with the treatment pool, a filter membrane is fixed at the notch, the top of the coil shell has a water receiving tank that communicates with the inner cavity, the water receiving tank is fixed and communicates with a drain tank, and the drain tank is set close to the coil shell.

[0010] Preferably, the bottom of the treatment tank is fixed and connected to several discharge pipes, the drainage tank is connected to the discharge pipes, the discharge pipes are equipped with a flow meter, a pump body and an electric valve, and the several discharge pipes are connected to the reprocessing equipment.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: By symmetrically installing two sets of electrode plates in the treatment tank, an electric field is formed within the tank. This electric field neutralizes the surface charge of colloidal particles in the sludge, weakening electrostatic repulsion and encouraging particles to approach each other. Furthermore, an electromagnetic coil installed in the center of the treatment tank creates a magnetic field. This magnetic field exerts a magnetic force on magnetic metal ions or iron-containing colloidal particles in the sludge, causing them to move in a directional manner. This directional movement increases the probability of collisions between particles. The combination of these two factors promotes particle aggregation and flocculation, forming larger floc structures. Subsequently, under the influence of gravity, solid-liquid separation is achieved. Moreover, these large floc structures can be more effectively compressed during subsequent mechanical dewatering, squeezing out more water, thereby improving dewatering efficiency and reducing the water content of the sludge. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic cross-sectional view of the treatment tank of the present invention; Figure 3 This is a schematic diagram of the internal structure of the treatment pool of the present invention; Figure 4 This is a schematic diagram of the dredging device of the present invention; Figure 5 This is a schematic diagram of the installation structure of the stirring rod of the present invention; Figure 6 This is a schematic diagram of the drainage tank of the present invention; Figure 7 for Figure 3 A magnified structural diagram at point A; Figure 8 This is a schematic diagram of the inner shell structure of the present invention.

[0013] Reference numerals: 1. Outer shell; 2. Inner shell; 3. Chamber; 4. Electrode plate; 5. Coil shell; 6. Electromagnetic coil; 7. Power distribution shell; 8. Hydraulic cylinder; 9. Dredging device; 10. Stirring rod; 11. Motor; 12. Drive assembly; 13. Antimagnetic shell; 21. Inner cavity; 22. Filter membrane; 23. Water receiving tank; 24. Drainage tank; 31. Slot; 32. Telescopic sealing gasket; 41. Insulating terminal block; 91. Mounting plate; 92. Brush bristles; 93. Mounting rod; 94. Push plate; 95. Connecting plate; 96. Guide groove; 97. Guide seat; 98. Mounting cover; 100. Treatment tank; 200. Sludge conveying pipe; 300. Retreatment equipment; 400. Discharge pipe; 500. Laser particle size analyzer; 600. Analysis tube. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0015] See attached document Figure 1-8 A sludge wastewater treatment device for water conservancy projects includes a treatment tank 100 consisting of an outer shell 1 and an inner shell 2. The top of the treatment tank 100 is connected to a plurality of sludge conveying pipes 200. Each sludge conveying pipe 200 includes an analysis pipe 600. A laser particle size analyzer 500 is provided on the side of the analysis pipe 600. The outer shell 1 has chambers 3 on both sides, which are symmetrically arranged. Each chamber 3 contains at least two corrosion-resistant electrode plates 4. A power distribution shell 7 is fixed to the outside of the outer shell 1. The power distribution shell 7 has slots 31 on both sides that communicate with the chambers 3. The electrode plates 4 have insulating wiring plates 41 that penetrate the slots 31 and are located inside the power distribution shell 7. A hydraulic cylinder 8 is fixedly installed inside the power distribution shell 7. One electrode plate 4 is fixedly connected to the pushing end of the hydraulic cylinder 8 through the insulating wiring plate 41. A telescopic sealing gasket 32 ​​is fitted at the connection between the insulating wiring plate 41 and the hydraulic cylinder 8. The other electrode plate 4 is fixed in the slot 31 through the insulating wiring plate 41. A coil shell 5 is fixed to the outside of the inner shell 2. The coil shell 5 contains an electromagnetic coil 6.

[0016] By supplying power to the electrode plates 4 and the electromagnetic coil 6, the symmetrical electrode plates 4 form an electric field within the treatment tank 100, while the electromagnetic coil 6 forms a magnetic field. During operation, after the sludge is input into the treatment tank 100, the negatively charged colloidal particles in the sludge are first affected by the electric field. The electric field neutralizes the charge on the surface of the colloidal particles, weakening the electrostatic repulsion and causing the particles to approach each other. At the same time, the magnetic field exerts a magnetic force on the magnetic metal ions or iron-containing colloidal particles, causing them to move in a directional manner. This directional movement increases the probability of collisions between particles. The combination of these two factors promotes particle aggregation and flocculation, forming larger floc structures. Subsequently, under the action of gravity, solid-liquid separation is achieved. Moreover, this large floc structure can be more effectively compressed during the subsequent mechanical dewatering process, squeezing out more water, thereby improving dewatering efficiency and reducing the water content of the sludge.

[0017] Specifically, the sludge conveying pipe 200 is connected to an external sludge conveying pipe. When sludge is input through the sludge conveying pipe 200, some of the sludge will be diverted into the analysis pipe 600. Subsequently, this part of the sludge will be analyzed by the laser particle size analyzer 500. The analysis can detect the size distribution of particles in the sludge, thereby determining the content and particle size range of colloidal particles. This provides a basis for the hydraulic cylinder 8 to adjust the position of one of the electrode plates 4. The adjustment will change the distance between the two electrode plates 4. Specifically, if the laser particle size analyzer 500 detects colloidal particles with small particle size and high content, the electric field strength of adjacent electrode plates 4 can be appropriately increased to enhance the charge neutralization effect. Increasing the distance between adjacent electrode plates 4 will decrease the electric field strength, and decreasing the distance between adjacent electrode plates 4 will increase the electric field strength. Thus, the distance between adjacent electrode plates 4 can be adjusted according to the detection situation of the laser particle size analyzer 500 in order to maximize the degree of aggregation and flocculation.

[0018] In this embodiment, a plurality of stirring rods 10 are provided through the treatment tank 100, and stirring blades located inside the treatment tank 100 are installed on the stirring rods 10. A motor 11 for driving the stirring rods 10 to rotate is fixed at the bottom of the outer shell 1, and an antimagnetic outer shell 13 is provided outside the motor 11.

[0019] like Figure 5 As shown, a drive assembly 12 is provided between the output end of the motor 11 and the stirring rod 10. The drive assembly 12 includes a multi-groove pulley installed on the output end of the motor 11 and a driven pulley installed on the stirring rod 10. A belt is installed between the two, so that by starting the motor 11, several stirring rods 10 can be driven to rotate, so that the stirring blades can stir the sludge in the treatment tank 100. During the stirring process, the sludge can be fully mixed in the electric field and magnetic field, enhancing the collision and aggregation effect between particles.

[0020] Furthermore, by providing an antimagnetic outer shell 13 around the motor 11, the motor 11 can be protected from electric fields and electromagnetic interference.

[0021] Additionally, it should be noted that both sides of the electrode plate 4 are provided with sludge removal devices 9 located within the treatment tank 100. The sludge removal device 9 includes a mounting plate 91 located on the side of the electrode plate 4. The mounting plate 91 is fixed with brush bristles 92 that contact the electrode plate 4. A mounting rod 93 is fixed between the two ends of the mounting plate 91. A connecting piece 95 is rotatably mounted on both ends of the mounting rod 93. One end of the connecting piece 95 and the pushing piece 94 are hinged together. The other end of the pushing piece 94 is fixed on the stirring rod 10. The sludge removal device 9 also includes two mounting covers 98 fixed within the treatment tank 100 and distributed vertically. The pushing piece 94 and the connecting piece 95 are both located within the mounting covers 98. Guide seats 97 are fixed on both ends of the mounting rod 93. The mounting covers 98 have guide grooves 96, and the guide seats 97 are slidably mounted within the guide grooves 96.

[0022] After being stirred, the sludge in the treatment tank 100 will adhere to the electrode plate 4 over a large area. The stirring rod 10 can be rotated to make the pushing plate 94 pull the connecting plate 95. The connecting plate 95 will pull the mounting plate 91 to move in a reciprocating arc through the mounting rod 93, so that the brush bristles 92 can clean the sludge on the electrode plate 4. The guide seat 97 is slidably installed in the guide groove 96 to ensure the stability of the movement. Furthermore, a telescopic sealing gasket is installed between the guide seat 97 and the guide groove 96 to prevent the sludge from entering the mounting cover 98. The silt and impurities attached to the electrode plate 4 are removed to prevent corrosion of the electrode plate 4, thus ensuring the conductivity of the electrode plate, maintaining the stable operation of the electric field, and ensuring the continuous effectiveness of the electric field.

[0023] It should also be noted that when the sludge is fed into the pool, the water in the sludge is not drained, and the sludge will adhere to the electrode plate 4 over a large area. With the continuous action of electromagnetic and magnetic fields, the water in the sludge is drained. Since the density of water is greater than that of sludge, the sludge that has accumulated rises as the water decreases. At this time, the sludge on the electrode plate 4 can be brushed away and will not adhere to the electrode plate 4 for a long time. The role of the sludge removal device 9 is to prevent the electrode plate 4 from still being covered with sludge during subsequent continuous separation.

[0024] refer to Figure 3 , 6 7 and 8, the inner shell 2 has an inner cavity 21, the bottom of the inner cavity 21 has a notch that communicates with the treatment pool 100, a filter membrane 22 is fixed at the notch, the top of the coil shell 5 has a water receiving tank 23 that communicates with the inner cavity 21, the water receiving tank 23 is fixed and communicated with a drain tank 24, and the drain tank 24 is set close to the coil shell 5.

[0025] After a period of operation, the sludge in the treatment tank 100 will have its water content drop to the bottom of the tank. The water will then pass through the filter membrane 22 and enter the inner cavity 21. The water in the inner cavity 21 will be discharged through the water receiving tank 23 and the drainage tank 24. During this drainage process, the heat generated by the electromagnetic coil 6 can be carried away, which will have a cooling effect on the electromagnetic coil 6. Moreover, this part of the water has been filtered by the filter membrane 22, achieving the effect of wastewater treatment, and can be used for the next stage of continuous treatment. This forms a process of sludge and water separation followed by water treatment.

[0026] It should also be noted that the bottom of the treatment pool 100 is fixed and connected to several discharge pipes 400. The drainage tank 24 is connected to the discharge pipes 400. The discharge pipes 400 are equipped with a flow meter, a pump body and an electric valve. Several discharge pipes 400 are connected to the reprocessing equipment 300.

[0027] Specifically, in this embodiment, the water discharged from the drain tank 24 serves only to cool the electromagnetic coil 6. The water in the drain tank 24 is discharged into the discharge pipe 400 and finally input into the reprocessing device 300. In this embodiment, the pump body is specifically a water pump, and the reprocessing device 300 is a wastewater treatment device, specifically an activated carbon adsorption water tank. The wastewater input into the discharge pipe 400 can be reprocessed through the activated carbon adsorption water tank. refer to Figure 1 Another embodiment of this solution is also introduced. In this embodiment, after the wastewater filtered by the filter membrane 22 is discharged from the drain tank 24, the treatment tank 100 will only contain a large amount of sludge. Although it has been treated as described above, the sludge still contains water. At this time, the sludge can be input into the reprocessing equipment 300 through the discharge pipe 400. In this embodiment, the pump body is specifically a sludge pump, and the reprocessing equipment 300 is a sludge wastewater filter press. The sludge wastewater filter press can further separate the sludge into mud and water, thereby improving the mud and water separation effect.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for treating sludge and wastewater from water conservancy projects, characterized in that, The treatment tank (100) consists of an outer shell (1) and an inner shell (2). Several sludge conveying pipes (200) are connected to the top of the treatment tank (100). Each sludge conveying pipe (200) includes an analysis pipe (600). A laser particle size analyzer (500) is provided on the side of the analysis pipe (600). A chamber (3) is provided on both sides of the outer shell (1). The chambers (3) on both sides are symmetrically arranged. At least two corrosion-resistant electrode plates (4) are provided in the chambers (3). A power distribution shell (7) is fixed on the outside of the outer shell (1). The power distribution shell (7) has slots (31) on both sides that communicate with the chambers (3). The electrode plates (4) have insulating contacts that penetrate the slots (31) and are located in the power distribution shell (7). A hydraulic cylinder (8) is fixedly installed inside the circuit board (41) and the distribution shell (7). One of the electrode plates (4) is fixedly connected to the pushing end of the hydraulic cylinder (8) through the insulating terminal board (41). A telescopic sealing gasket (32) is provided at the connection between the insulating terminal board (41) and the hydraulic cylinder (8). The other electrode plate (4) is fixed in the slot (31) through the insulating terminal board (41). A coil shell (5) is fixed on the outside of the inner shell (2). An electromagnetic coil (6) is provided in the coil shell (5). Several stirring rods (10) are provided through the treatment tank (100). Stirring blades located in the treatment tank (100) are installed on the stirring rods (10). A driving stirring rod (1) is fixed at the bottom of the outer shell (1). 0) A rotating motor (11) is provided with an antimagnetic shell (13) outside the motor (11). A drive assembly (12) is provided between the output end of the motor (11) and the stirring rod (10). The drive assembly (12) includes a multi-groove pulley installed on the output end of the motor (11) and a driven pulley installed on the stirring rod (10). A belt is installed between the two. Both sides of the electrode plate (4) are provided with sludge removal devices (9) located in the treatment tank (100). The sludge removal device (9) includes a mounting plate (91) located on the side of the electrode plate (4). The mounting plate (91) is fixed with bristles (92) that contact the electrode plate (4). A mounting rod (93) is fixed between the two ends of the mounting plate (91). The mounting rod (93) is rotatably mounted with connecting pieces (95) at both ends. One end of the connecting piece (95) and the pushing piece (94) are hinged together, and the other end of the pushing piece (94) is fixed on the stirring rod (10). The sludge removal device (9) also includes two mounting covers (98) fixed in the treatment tank (100) and distributed vertically. The pushing piece (94) and the connecting piece (95) are both located in the mounting cover (98). Both ends of the mounting rod (93) are fixed with guide seats (97). The mounting cover (98) has a guide groove (96). The guide seat (97) is slidably installed in the guide groove (96). A telescopic sealing gasket is installed between the guide seat (97) and the guide groove (96).

2. The water conservancy project sludge wastewater treatment device according to claim 1, characterized in that, The inner shell (2) has an inner cavity (21) inside. The bottom of the inner cavity (21) has a notch that communicates with the treatment pool (100). A filter membrane (22) is fixed at the notch. A water receiving tank (23) that communicates with the inner cavity (21) is fixed at the top of the coil shell (5). A drain tank (24) is fixed and communicated with the water receiving tank (23). The drain tank (24) is set close to the coil shell (5).

3. The water conservancy project sludge wastewater treatment device according to claim 2, characterized in that, The bottom of the treatment tank (100) is fixed and connected to a plurality of discharge pipes (400). The drainage tank (24) is connected to the discharge pipes (400). The discharge pipes (400) are equipped with a flow meter, a pump body and an electric valve. The plurality of discharge pipes (400) are connected to the reprocessing equipment (300).

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