Sludge water purifying and dehydrating device

Abstract

The utility model discloses a sludge water purifying and dehydrating device which comprises a pretreatment system, a concentrated sludge discharging system, a homogeneous balance system and a snail purifying and dehydrating system, the pretreatment system comprises a hydrocyclone, a spiral desanding machine and a buffer tank, the concentration sludge discharge system comprises a first dissolving and dosing device, a mixer and a fluidized bed, the homogeneous balance system comprises a balance conditioning tank and a homogeneous mixing device, and the clean snail dehydration system comprises a second dissolving and dosing device and a clean snail dehydrator. The whole device disclosed by the utility model is wide in water quality application range, strong in impact resistance, high in sludge removal efficiency and capable of rapidly reducing the turbidity of effluent.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a mud and water purifying screw dehydrating device. Background Art

[0002] The water treatment process at a waterworks consists of several key steps: pretreatment, coagulation and flocculation, filtration, disinfection, and water distribution. First, large particles and suspended matter are removed through screening and sedimentation. A coagulant is then used to aggregate tiny suspended matter into larger clusters for subsequent filtration and removal. Sand or activated carbon filters are then used to further remove fine suspended matter and organic matter. Disinfectants are then used to disinfect the water, killing bacteria and viruses. Finally, the water quality is regulated and distributed to users through a pipeline network, ensuring it meets safety standards and is suitable for drinking and various domestic needs.

[0003] The sludge produced by the existing water treatment equipment in the sedimentation process has a high water content. When the water output is large, the water quality is unstable and prone to fluctuations. The subsequent discharge, reuse, sludge dehydration and drying series of treatment ancillary equipment are numerous, which makes the production cost high. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a mud and water removal and screw dehydration device.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions, including:

[0006] Pretreatment system, concentrated sludge discharge system, homogenization balance system and snail cleaning and dehydration system;

[0007] The pretreatment system includes a hydrocyclone, a spiral sand remover and a buffer tank. The pretreatment system is connected to the thickening and sludge discharge system through a pipeline assembly. The pretreatment system is used for preliminary sedimentation.

[0008] The concentrated mud discharge system includes a first dissolving and dosing device, a mixer and a fluidized bed. The concentrated mud discharge system is connected to the homogenization balance system through a pipeline component. The concentrated mud discharge system is used for dosing and concentrating the sludge.

[0009] The homogeneous balance system includes a balance conditioning tank and a homogeneous mixing device. The homogeneous balance system is connected to the net screw dehydration system through a pipeline component. The homogeneous balance system is used to balance and adjust the water quality;

[0010] The snail cleaning and dehydration system includes a second dissolving and dosing device and a snail cleaning and dehydrating machine, and the snail cleaning and dehydration system is used for dehydrating and discharging sludge.

[0011] As a further description of the above technical solution, the hydrocyclone is installed on the top of the spiral desander, the sand discharge port at the bottom of the hydrocyclone is connected to the spiral desander, and the first water outlet at the top of the hydrocyclone is connected to the buffer tank.

[0012] As a further description of the above technical solution, the buffer tank is provided with a fluidized bed mud feed pump, the second water outlet of the fluidized bed mud feed pump is connected to the first drug inlet of the mixer, the first liquid outlet of the first dissolving and dosing device is connected to the first drug inlet of the mixer through the first dosing pump, and the second liquid outlet of the mixer is connected to the first liquid inlet of the fluidized bed.

[0013] As a further description of the above technical solution, the fluidized bed includes a tank body, and the tank body is provided with a concentration zone, a granulation fluidization zone and a water collection zone in sequence from bottom to top.

[0014] As a further description of the above technical solution, a first liquid inlet is provided at the bottom of the tank body, a third water outlet is provided at the top of the tank body, and a first mud discharge outlet is provided below the tank body.

[0015] As a further description of the above technical solution, the balance conditioning tank includes a cylinder, and a homogenizing mixing device is provided inside the cylinder and through the top.

[0016] As a further description of the above technical solution, a first mud inlet is provided on one side of the top of the cylinder, and a first mud outlet is provided on the other side of the bottom of the cylinder. The first mud inlet is connected to the first mud outlet of the tank body through a mud discharge pump, and the first mud outlet is connected to the second mud inlet at the bottom of the screw dehydrator through a screw stacking mud pump.

[0017] As a further description of the above technical solution, the screw dehydrator includes a flocculation tank, a dehydration body and a liquid collection tank. The left side of the dehydration body is connected to the flocculation tank, and the bottom of the dehydration body is connected to the liquid collection tank.

[0018] As a further description of the above technical solution, a second drug inlet is provided on the top of the flocculation tank, and the second drug inlet is connected to the second dissolving and dosing device through a second drug dosing pump.

[0019] As a further description of the above technical solution, a fourth water outlet is provided at the bottom of the liquid collecting tank, and the fourth water outlet is connected to the first drug inlet of the mixer through the filtrate pipeline assembly pump.

[0020] The beneficial effects of the utility model are as follows:

[0021] This utility model uses a hydrocyclone to separate, settle, and remove sand, then flows into a buffer tank for temporary storage. It then passes through a first dissolving and dosing device, where it is thoroughly mixed and coagulated in a mixer. The solution is then concentrated in a high-speed fluidized bed and collected in a balanced conditioning tank before being sent to a dehydrator for dehydration to produce a sludge cake. The entire device boasts a wide range of water quality applications, strong impact resistance, high sludge removal efficiency, and can rapidly reduce effluent turbidity.

[0022] In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the utility model of the mud and water cleaning screw dehydration device Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model of the mud and water cleaning screw dehydration device Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model of the mud and water cleaning screw dehydration device Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the structure of the utility model of the mud and water cleaning screw dehydration device Figure 4 ;

[0027] Figure 5 This is a schematic diagram of the structure of the utility model of the mud and water cleaning screw dehydration device Figure 5 .

[0028] Reference numerals:

[0029] 1. Pretreatment system; 11. Hydrocyclone; 111. Sand discharge port; 112. First water outlet; 12. Screw desander; 13. Buffer tank; 2. Concentration and sludge discharge system; 21. Fluidized bed sludge pump; 211. Second water outlet; 22. First dissolving and dosing device; 221. First liquid outlet; 23. Mixer; 231. First drug inlet; 232. Second liquid outlet; 24. Fluidized bed; 241. First liquid inlet; 242. Third water outlet; 243. First sludge discharge port; 244. Concentration zone; 245. Granulation fluidized zone; 246. Water collection area; 247, tank body; 25, mud discharge pump; 26, first dosing pump; 3, homogeneous balance system; 31, balance conditioning tank; 311, first mud inlet; 312, first mud outlet; 32, homogeneous mixing device; 4, clean screw dewatering system; 41, stacked screw mud pump; 42, second dissolving and dosing device; 43, clean screw dewatering machine; 431, second drug inlet; 432, fourth water outlet; 433, second mud inlet; 434, flocculation tank; 435, dewatering body; 436, liquid collecting tank; 44, filtrate pipeline assembly pump; 45, second dosing pump. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0031] like Figure 1-Figure 5 As shown, in one embodiment, a device for removing mud and water from a screw and removing water comprises:

[0032] Pretreatment system 1, concentrated sludge discharge system 2, homogenization balance system 3 and clean snail dehydration system 4. Pretreatment system 1 and concentrated sludge discharge system 2 are connected via a pipeline assembly. Pretreatment system 1 is used for initial sedimentation. Concentrated sludge discharge system 2 is connected via a pipeline assembly to homogenization balance system 3. Concentrated sludge discharge system 2 is used to add chemicals and concentrate sludge. Homogeneous balance system 3 is connected via a pipeline assembly to clean snail dehydration system 4. Homogeneous balance system 3 is used to balance and adjust water quality. Clean snail dehydration system 4 is used to dehydrate and discharge sludge.

[0033] like Figure 1-Figure 5 As shown, in this embodiment, the pretreatment system 1 includes a hydrocyclone 11, a spiral desander 12, and a buffer tank 13. The hydrocyclone 11 is installed on top of the spiral desander 12, a sand discharge port 111 at the bottom of the hydrocyclone 11 is connected to the spiral desander 12, and a first water outlet 112 at the top of the hydrocyclone 11 is connected to the buffer tank 13.

[0034] Furthermore, a fluidized bed mud feed pump 21 is also provided inside the buffer pool 13. The second water outlet 211 of the fluidized bed mud feed pump 21 is connected to the first drug inlet 231 of the mixer 23, and the first liquid outlet 221 of the first dissolving and dosing device 22 is connected to the first drug inlet 231 of the mixer 23 through the first dosing pump 26, and the second liquid outlet 232 of the mixer 23 is connected to the first liquid inlet 241 of the fluidized bed 24.

[0035] like Figure 1-Figure 5 As shown, in this embodiment, the concentration and sludge discharge system 2 includes a first dissolving and dosing device 22, a mixer 23, and a fluidized bed 24. The fluidized bed 24 includes a tank body 247, and the tank body 247 is provided with three functional areas from bottom to top: a concentration area 244, a granulation fluidized area 245, and a water collection area 246.

[0036] Furthermore, a first liquid inlet 241 is provided at the bottom of the tank body 247 , a third water outlet 242 is provided at the top of the tank body 247 , and a first mud discharge port 243 is provided below the tank body 247 .

[0037] like Figure 1-Figure 5 As shown, in this embodiment, the homogeneous balancing system 3 includes a balancing conditioning tank 31 and a homogeneous mixing device 32. The balancing conditioning tank 31 includes a cylinder, and the homogeneous mixing device 32 is provided through the top of the cylinder.

[0038] Furthermore, a first mud inlet 311 is provided on one side of the top of the cylinder, and a first mud outlet 312 is provided on the other side of the bottom of the cylinder. The first mud inlet 311 is connected to the first mud outlet 243 of the tank body 247 through the mud discharge pump 25, and the first mud outlet 312 is connected to the second mud inlet 433 at the bottom of the screw cleaning dehydrator 43 through the screw stacking mud inlet pump 41.

[0039] like Figure 1-Figure 5 As shown, in this embodiment, the snail cleaning and dehydration system 4 includes a second dissolving and dosing device 42 and a snail cleaning and dehydrating machine 43. Among them, the snail cleaning and dehydrating machine 43 includes a flocculation tank 434, a dehydration body 435 and a liquid collecting tank 436. The left side of the dehydration body 435 is connected to the flocculation tank 434, and the bottom of the dehydration body 435 is connected to the liquid collecting tank 436.

[0040] Furthermore, a second drug inlet 431 is provided at the top of the flocculation tank 434, and the second drug inlet 431 is connected to the second dissolving and dosing device 42 through the second drug dosing pump 45; and a fourth water outlet 432 is provided at the bottom of the liquid collecting tank 436, and the fourth water outlet 432 is connected to the first drug inlet 231 of the mixer 23 through the filtrate pipeline assembly pump 44.

[0041] Working principle:

[0042] After the sand-laden muddy water enters the hydrocyclone 11 from feed line B, it utilizes the principle of cyclonic centrifugal separation. Relying on the boundary layer effect between the inner surface of the cone bucket and the fluid interface, the sand and gravel settle and converge toward the center of the bottom. It is then discharged from the bottom sand outlet 111 into the spiral desander 12. The sand and gravel are concentrated by gravity in the spiral desander 12 and eventually discharged through the shaftless spiral dewatering system. The desandered muddy water then flows through the first outlet 112 at the top of the hydrocyclone 11 into the buffer tank 13 for temporary storage.

[0043] The fluidized bed mud pump 21 arranged at the bottom of the buffer tank 13 transports the muddy water with the sand and gravel removed to the mixer 23. At the same time, the dissolved polyaluminum chloride (PAC) solution is quantitatively added to the mixer 23 through the first dissolving and dosing device 22. The muddy water with the sand and gravel removed and the polyaluminum chloride (PAC) solution are fully mixed in the mixer 23 to produce coagulation, so that the colloidal particles and tiny suspended matter in the water are aggregated and form tiny aggregates.

[0044] It then enters the high-speed fluidized bed 24 concentration zone 244 for concentration; then it passes upward through the granulation fluidization zone 245, where a large-size, high-density particle suspension layer is formed, realizing a one-by-one attachment binding mode of tiny particles on the surface of the matrix, and reaches a dynamic equilibrium state through the mechanical and hydraulic shearing action in the upward flow, forming a stable particle fluidized bed 24; after reaching the top of the inner tube, the sludge in the sludge water settles downward along the outer wall of the inner tube, forming a sludge concentration zone 244 at the bottom of the outer tube, and is discharged regularly through the first sludge discharge port 243 at the bottom of the tank body 247 by the sludge discharge pump 25 to the balance conditioning tank 31 to collect the concentrated sludge; at the same time, the purified clean water is discharged through the third water outlet located at the top of the water collection area 246 of the high-speed fluidized bed 24.

[0045] The concentrated sludge collected in the balance conditioning tank 31 is buffered and homogenized and balanced under the action of the top homogenizing mixing device 32 to meet the operating conditions of the screw cleaning dehydrator 43.

[0046] Subsequently, the concentrated sludge is transported to the second mud inlet 433 of the clean screw dewatering machine 43 by the clean screw mud pump, and the second dissolving and dosing device 42 quantitatively adds the dissolved prepared polyacrylamide (PAM) solution to the second drug inlet 431 of the clean screw dewatering machine 43; the concentrated sludge and polyacrylamide (PAM) solution are mixed in the flocculation tank 434 of the clean screw dewatering machine 43, so that the destabilized colloid and tiny suspended matter are aggregated into large floccules, which enter the dewatering body 435 of the clean screw dewatering machine 43. The dewatering body 435 is formed by the stacking of fixed rings and dynamic rings and the penetration of spiral shafts driven by a reduction motor. The filter chamber and the upper end of the movable ring produce irregular movements under the driving action of the spiral shaft, and are continuously misaligned with the fixed ring to keep the filter seam unobstructed. In this way, the flocculent body is gradually dehydrated under the push and squeeze of the spiral shaft to produce mud cakes, which are then discharged outwards. A liquid collecting tank 436 is provided under the dehydration body 435 of the net screw dehydrator 43. The filtrate squeezed out by the dehydration body 435 will be collected in the liquid collecting tank 436. Due to the squeezing force, the filtrate contains some sludge. In order to improve the recovery rate and avoid filtrate discharge pollution, the filtrate is returned to the first drug inlet 231 of the mixer 23 under the action of the filtrate pipeline assembly pump 44 for continuous re-circulation purification.

[0047] Through the above technical solution, the water quality of the entire device of this application has a wide range of applicability, strong impact resistance, high sludge removal efficiency, can quickly reduce the turbidity of the effluent, has a stable effluent effect, and has few auxiliary equipment, realizing automated operation and operation, simple maintenance and operation management, saving costs and floor space.

[0048] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dehydration device for draining mud and water, characterized in that: include: Pretreatment system (1), concentrated mud discharge system (2), homogenization balance system (3) and clean snail dehydration system (4), muddy water passes through pretreatment system (1), concentrated mud discharge system (2), homogenization balance system (3) and clean snail dehydration system (4) in sequence to discharge sludge for reuse; The pretreatment system (1) comprises a hydrocyclone (11), a spiral sand remover (12) and a buffer tank (13); the pretreatment system (1) and the concentrated mud discharge system (2) are connected via a pipeline assembly; the pretreatment system (1) is used for preliminary sedimentation; The concentrated sludge discharge system (2) comprises a first dissolving and dosing device (22), a mixer (23) and a fluidized bed (24); the concentrated sludge discharge system (2) is connected to the homogeneous balance system (3) via a pipeline assembly; the concentrated sludge discharge system (2) is used for dosing and concentrating sludge; The homogeneous balance system (3) comprises a balance conditioning tank (31) and a homogeneous mixing device (32), the homogeneous balance system (3) is connected to the screw cleaning and dehydration system (4) through a pipeline component, and the homogeneous balance system (3) is used to balance and adjust water quality; The snail cleaning and dehydration system (4) comprises a second dissolving and dosing device (42) and a snail cleaning and dehydrating machine (43). The snail cleaning and dehydration system (4) is used for dehydrating and discharging sludge.

2. The dehydration device for removing mud and water according to claim 1, characterized in that: The hydrocyclone (11) is installed on the top of the spiral desander (12); the sand discharge port (111) at the bottom of the hydrocyclone (11) is connected to the spiral desander (12); and the first water outlet (112) at the top of the hydrocyclone (11) is connected to the buffer pool (13).

3. The dehydration device for removing mud and water according to claim 1, characterized in that: The buffer pool (13) is provided with a fluidized bed mud feed pump (21), the second water outlet (211) of the fluidized bed mud feed pump (21) is connected to the first drug inlet (231) of the mixer (23), the first liquid outlet (221) of the first dissolving and dosing device (22) is connected to the first drug inlet (231) of the mixer (23) through the first dosing pump (26), and the second liquid outlet (232) of the mixer (23) is connected to the first liquid inlet (241) of the fluidized bed (24).

4. The dehydration device for removing mud and water according to claim 1, characterized in that: The fluidized bed (24) comprises a tank body (247), and the tank body (247) is provided with a concentration zone (244), a granulation fluidization zone (245) and a water collection zone (246) in sequence from bottom to top.

5. The dehydration device for removing mud and water according to claim 4, characterized in that: The bottom of the tank body (247) is provided with a first liquid inlet (241), the top of the tank body (247) is provided with a third water outlet (242), and the bottom of the tank body (247) is provided with a first mud discharge port (243).

6. The dehydration device for removing mud and water according to claim 1, characterized in that: The equilibrium conditioning tank (31) comprises a cylinder, and a homogenizing mixing device (32) is provided inside the cylinder and through the top.

7. The dehydration device for removing mud and water according to claim 6, characterized in that: A first mud inlet (311) is provided on one side of the top of the cylinder, and a first mud outlet (312) is provided on the other side of the bottom of the cylinder. The first mud inlet (311) is communicated with a first mud outlet (243) of the tank (247) via a mud discharge pump (25), and the first mud outlet (312) is communicated with a second mud inlet (433) at the bottom of the screw cleaning dewatering machine (43) via a screw stacking mud inlet pump (41).

8. The dehydration device for removing mud and water according to claim 1, characterized in that: The screw cleaning dehydrator (43) comprises a flocculation tank (434), a dehydration main body (435) and a liquid collecting tank (436). The left side of the dehydration main body (435) is connected to the flocculation tank (434), and the bottom of the dehydration main body (435) is connected to the liquid collecting tank (436).

9. The dehydration device for removing mud and water according to claim 8, characterized in that: A second drug inlet (431) is provided at the top of the flocculation tank (434), and the second drug inlet (431) is connected to the second dissolving and dosing device (42) through a second dosing pump (45).

10. The dehydration device for removing mud and water according to claim 8, characterized in that: A fourth water outlet (432) is provided at the bottom of the liquid collecting tank (436), and the fourth water outlet (432) is connected to the first drug inlet (231) of the mixer (23) through the filtrate pipeline assembly pump (44).

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