Final sedimentation tank for treating lyocell fiber wastewater

Abstract

The utility model discloses a final sedimentation tank for treating lyocell fiber wastewater. The final sedimentation tank comprises an aeration device, the aeration device comprises an air inlet pipe, a main pipe, a rectangular branch pipe layer and a plurality of supporting rods; the supporting rods and the main pipes are fixed to the rectangular branch pipe layers one by one, and the bottom ends of the supporting rods and the bottom ends of the main pipes can abut against the bottom of the water inlet area so that the rectangular branch pipe layers can be fixed into the water inlet area. The rectangular branch pipe layer comprises a plurality of branch pipes and two communicating pipes, and the plurality of branch pipes are provided with aeration holes; the branch pipes are arranged at intervals; one of the two communicating pipes is communicated with the first ends of the plurality of branch pipes, and the other one of the two communicating pipes is communicated with the second ends of the plurality of branch pipes; the air outlet end of the main pipe is communicated with one of the branch pipes; the air inlet end of the main pipe communicates with the air inlet pipe. The aeration device is arranged, so that sludge is finally settled in the water outlet area of the final settling tank under the action of the aeration device, and the problem of sludge deposition caused by non-uniform water distribution in the water inlet area is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a final sedimentation tank for treating lyocell fiber wastewater. Background Art

[0002] Lyocell fiber is a new type of textile and clothing fabric that emerged in Europe and the United States in the mid-to-late 1990s. It not only has the comfort, good hand feel, and easy dyeing characteristics of natural fiber cotton, but also has the environmental advantages that traditional viscose fibers do not have.

[0003] The wastewater generated during the production of lyocell fiber needs to be treated in a final sedimentation tank; however, the water inlet area of ​​the existing final sedimentation tank has uneven water distribution, which leads to sludge deposition, resulting in high suspended solids in the effluent. After the sludge is blocked, ozone contacts the filter material of the biological filter in the final sedimentation tank, increasing the operating cost and the risk of effluent exceeding the standard, and reducing the stability of the final sedimentation tank operation. Utility Model Content

[0004] In view of this, the utility model provides a final sedimentation tank for treating lyocell fiber wastewater. Through the setting of an aeration device, the water carrying sludge is allowed to settle in the outlet area of ​​the final sedimentation tank under the action of the aeration device, thereby solving the problem of sludge deposition caused by uneven water distribution in the water inlet area.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A final sedimentation tank for treating lyocell fiber wastewater, comprising: an aeration device;

[0007] The aeration device comprises: an air inlet pipe, a main pipe, a rectangular branch pipe layer and a plurality of support rods;

[0008] The plurality of support rods and the main pipe are fixed one by one at different positions of the rectangular branch pipe layer, and the bottom ends of the plurality of support rods and the bottom ends of the main pipe can abut against the bottom of the water inlet area of ​​the final settling tank to fix the rectangular branch pipe layer in the water inlet area;

[0009] The rectangular branch pipe layer includes: a plurality of branch pipes and two connecting pipes, and the plurality of branch pipes are all provided with aeration holes;

[0010] The plurality of branch pipes are arranged at intervals; one of the two connecting pipes is connected to the first ends of the plurality of branch pipes, and the other of the two connecting pipes is connected to the second ends of the plurality of branch pipes; the gas outlet end of the main pipe is connected to one of the plurality of branch pipes;

[0011] The air inlet end of the main pipe is communicated with the air inlet pipe.

[0012] Preferably, the opening directions of the plurality of aeration holes are all toward the water inlet direction of the water inlet pipe.

[0013] Preferably, the number of the rectangular branch pipe layers is three, namely, a first rectangular branch pipe layer, a second rectangular branch pipe layer and a third rectangular branch pipe layer uniformly distributed along the axial direction of the water inlet area;

[0014] The first rectangular branch pipe layer, the second rectangular branch pipe layer and the third rectangular branch pipe layer are all connected and fixed to the main pipe;

[0015] The first rectangular branch pipe layer, the second rectangular branch pipe layer and the third rectangular branch pipe layer are all fixed one by one to the plurality of support rods.

[0016] Preferably, the number of the support rods is three;

[0017] The three support rods and the main pipe are fixed one by one at four different positions of the rectangular branch pipe layer.

[0018] Preferably, the main pipe is made of UPVC material, and / or

[0019] The materials of the plurality of branch pipes are all UPVC materials.

[0020] Preferably, the aeration device further comprises: a magnetic suspension fan and a central control computer;

[0021] The magnetic levitation fan is arranged on the air intake pipe and connected to the central control computer.

[0022] Preferably, the aeration device further comprises: an electronic pressure gauge disposed on the air inlet pipe;

[0023] The electronic pressure gauge is connected to the central control computer via an electrical signal, and the electronic pressure gauge is located between the magnetic suspension fan and the air outlet end of the air inlet pipe.

[0024] Preferably, it also includes: a mud suction device;

[0025] The sludge suction device is used to suck away the sludge in the outlet area of ​​the final sedimentation tank.

[0026] Preferably, the mud suction device comprises: a mud suction vehicle and a mud suction pipe;

[0027] The mud suction end of the mud suction pipe is located in the water outlet area, and the mud outlet end of the mud suction pipe is connected to the mud suction vehicle.

[0028] Preferably, it also includes: a turbidity meter and a flow meter sequentially arranged on the water inlet pipe;

[0029] The aeration device also includes: a central control computer;

[0030] The mud suction device also includes: a micro-control unit connected to the central control computer by electrical signals;

[0031] The micro-control unit is arranged on the sludge suction vehicle; the turbidity meter and the flow meter are both connected with the central control computer by electrical signals.

[0032] It can be seen from the above technical scheme that the final sedimentation tank provided by the utility model, through the setting of the aeration device, allows the water carrying sludge to settle in the outlet area of ​​the final sedimentation tank under the action of the aeration device, thereby solving the problem of sludge deposition caused by uneven water distribution in the water inlet area.

[0033] In this scheme, the sludge in the final sedimentation tank is sucked away in real time by setting up a sludge suction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of an aeration device for a final settling tank provided in an embodiment of the utility model;

[0036] Figure 2 An overall schematic diagram of a final sedimentation tank provided in an embodiment of the utility model.

[0037] Among them, 1 is an air intake pipe, 11 is a magnetic suspension fan, and 12 is an electronic pressure gauge;

[0038] 2 for supervisor;

[0039] 3 is a rectangular branch pipe layer, 31 is a branch pipe, 32 is a connecting pipe, 33 is an aeration hole, 34 is a first rectangular branch pipe layer, 35 is a second rectangular branch pipe layer, and 36 is a third rectangular branch pipe layer;

[0040] 4 is the support rod, 5 is the water inlet area;

[0041] 6 is a water inlet pipe, 61 is a turbidity meter, and 62 is a flow meter;

[0042] 7 is the water outlet area;

[0043] 8 is a mud suction device, 81 is a mud suction vehicle, 82 is a mud suction pipe, and 83 is a micro-control unit. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] The utility model provides a final sedimentation tank for treating lyocell fiber wastewater, such as Figure 1-Figure 2 As shown, it includes: an aeration device;

[0046] The aeration device comprises: an air inlet pipe 1, a main pipe 2, a rectangular branch pipe layer 3 and a plurality of support rods 4;

[0047] The plurality of support rods 4 and the main pipe 2 are fixed one by one at different positions of the rectangular branch pipe layer 3, and the bottom ends of the plurality of support rods 4 and the bottom ends of the main pipe 2 can abut against the bottom of the water inlet area 5 of the final settling tank to fix the rectangular branch pipe layer 3 in the water inlet area 5; it can be understood that, as Figure 1 As shown, the rectangular branch pipe layer 3 has different connection points, and a plurality of support rods 4 and the main pipe 2 are connected to different connection points to fix the rectangular branch pipe layer 3 in the water inlet area 5; in addition, the connection points on the rectangular branch pipe layer 3 can be set at the corners of the rectangular branch pipe layer 3;

[0048] The rectangular branch pipe layer 3 includes: a plurality of branch pipes 31 and two connecting pipes 32, and the plurality of branch pipes 31 are all provided with aeration holes 33;

[0049] The multiple branch pipes 31 are arranged at intervals; one of the two connecting pipes 32 is connected to the first ends of the multiple branch pipes 31, and the other of the two connecting pipes 32 is connected to the second ends of the multiple branch pipes 31; the gas outlet end of the main pipe 2 is connected to one of the multiple branch pipes 31;

[0050] The air inlet end of the main pipe 2 is connected to the air inlet pipe 1 .

[0051] In the above technical scheme, the water carrying sludge enters from the water inlet direction of the water inlet area of ​​the final settling tank, and at the same time, the air inlet pipe 1 starts to take in air, and the gas is blown out from the air inlet pipe 1, and then the gas passes through the main pipe 2 and the rectangular branch pipe layer 3, and then blown out from the aeration holes of the multiple branch pipes 31 of the rectangular branch pipe layer 3, so that the water carrying sludge is evenly distributed under the action of the airflow; at the same time, the sludge content in the water is also uniform; the water carrying sludge flows to the outlet area 7 with the water flow, and the sludge is finally deposited in the outlet area 7 of the final settling tank.

[0052] Compared with the existing technology, this solution uses the setting of an aeration device so that the water carrying sludge is finally precipitated in the outlet area 7 of the final sedimentation tank under the action of the aeration device, thereby solving the problem of sludge deposition caused by uneven water distribution in the water inlet area, thereby reducing the maintenance cost of the final sedimentation tank, making the final sedimentation tank meet the outlet water standard, and increasing the operating stability of the final sedimentation tank.

[0053] Further, such as Figure 1 As shown, the opening directions of the multiple aeration holes 33 are all toward the water inlet direction of the water inlet pipe 6. It can be understood that the opening directions of the aeration holes are toward the water inlet direction of the water inlet pipe 6, so that the airflow blown out from the aeration holes is blown out in the water inlet direction, thereby making the water distribution in the water inlet area 5 more uniform.

[0054] Further, such as Figure 1 As shown, there are three layers of rectangular branch pipe layers 3, namely, a first rectangular branch pipe layer 34, a second rectangular branch pipe layer 35 and a third rectangular branch pipe layer 36 uniformly distributed along the axial direction of the water inlet area 5. The three-dimensional space arrangement of the three-layer rectangular branch pipe layer 3 makes the water distribution in the water inlet area 5 more uniform;

[0055] The first rectangular branch pipe layer 34, the second rectangular branch pipe layer 35 and the third rectangular branch pipe layer 36 are all connected and fixed to the main pipe, and gas is supplied to the three rectangular branch pipe layers 3 through one main pipe, which is beneficial to improve work efficiency and simplify the structure;

[0056] The first rectangular branch pipe layer 34 , the second rectangular branch pipe layer 35 and the third rectangular branch pipe layer 36 are all fixed one by one to the plurality of support rods 4 . Such an arrangement is conducive to fixing the three rectangular branch pipe layers 3 in the water inlet area 5 .

[0057] Further, such as Figure 1 As shown, the number of support rods 4 is three;

[0058] The three support rods 4 and the main pipe 2 are fixed one by one at four different positions of the rectangular branch pipe layer 3. Such an arrangement is conducive to the stability of the overall structure of the aeration device and avoids displacement of the rectangular branch pipe layer 3 under the action of water flow.

[0059] Further, such as Figure 1 As shown, the material of the main pipe 2 is UPVC material, and / or

[0060] The material of the multiple branch pipes 31 is UPVC material. The use of UPVC material reduces the maintenance cost of the final sedimentation tank, which is beneficial to improving economic benefits. As a preferred embodiment, the multiple support rods 4 adopt a cylindrical structure.

[0061] Further, such as Figure 2 As shown, the aeration device further includes: a magnetic suspension fan 11 and a central control computer, wherein the central control computer is not shown in the figure;

[0062] The magnetic suspension fan 11 is arranged on the air intake pipe 1 and connected to the central control computer.

[0063] In the above technical solution, the magnetic levitation fan 11 can be controlled by a central control computer, and then the frequency of the magnetic levitation fan 11 can be controlled to control the air intake volume of the intake pipe according to actual conditions.

[0064] Furthermore, the aeration device further comprises: an electronic pressure gauge 12 disposed on the air inlet pipe 1;

[0065] The electronic pressure gauge 12 is connected to the central control computer via an electrical signal, and the electronic pressure gauge 12 is located between the magnetic suspension fan 11 and the air outlet end of the air inlet pipe 1 .

[0066] In the above technical solution, the electronic pressure gauge 12 is used to detect the pressure value in the intake pipe 1. When the pressure value in the intake pipe 1 is lower than the set pressure, the electronic pressure gauge 12 sends information to the central control computer, and the central control computer increases the frequency of the magnetic levitation fan 11, thereby increasing the intake volume; of course, when the pressure value in the intake pipe 1 is higher than the set pressure, the electronic pressure gauge 12 sends information to the central control computer, and the central control computer increases the frequency of the magnetic levitation fan 11, thereby reducing the intake volume.

[0067] Further, such as Figure 2 As shown, it also includes: a mud suction device 8;

[0068] The sludge suction device 8 is used to suck away the sludge in the outlet area 7 of the final sedimentation tank.

[0069] In the above technical solution, since the water flow speed in the water outlet area 7 is slowed down, the sludge is settled in the water outlet area, and the settled sludge is sucked out by the sludge suction device 8.

[0070] Furthermore, Figure 2 As shown, the mud suction device 8 includes: a mud suction vehicle 81 and a mud suction pipe 82;

[0071] The mud suction end of the mud suction pipe 82 is located in the water outlet area 7 , and the mud outlet end of the mud suction pipe 82 is connected to the mud suction vehicle 81 .

[0072] In the above technical solution, due to the arrangement of the sludge suction vehicle 81, the sludge in the water outlet area 7 can be flexibly sucked away; in addition, Figure 2 The direction indicated by the arrow is the mud suction direction.

[0073] Furthermore, it also includes: a turbidity meter 61 and a flow meter 62 which are sequentially arranged on the water inlet pipe 6;

[0074] The aeration device also includes: a central control computer;

[0075] The mud suction device 8 also includes: a micro-control unit 83 connected to the central control computer by electrical signals;

[0076] The micro-control unit 83 is arranged on the sludge suction vehicle 81; the turbidity meter 61 and the flow meter 62 are both connected to the central control computer by electrical signals.

[0077] In the above technical solution, the data in the specific work is transmitted to the central control computer through the turbidity meter 61 and the flow meter 62. The central control computer can calculate the sedimentation degree of the sludge in the water area 7 according to the transmitted data. When the preset sedimentation degree is reached, the central control computer sends a signal to the micro-control unit 83. The micro-control unit 83 controls the sludge suction truck 81 to move to the final sedimentation tank and uses the sludge suction pipe 82 to suck out the sludge. When the sludge is completed, the micro-control unit 83 controls the sludge suction truck 81 to move to avoid affecting the work of the final sedimentation tank.

[0078] The technical features mentioned above, the technical features to be mentioned below, and the technical features shown separately in the drawings can be combined with each other arbitrarily, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0079] The present invention is further described below in conjunction with specific embodiments:

[0080] In some embodiments, a final sedimentation tank for treating lyocell fiber wastewater has a branch pipe with a diameter of 0.15m, which is arranged vertically to the main pipe and parallel to the tank wall. Each branch pipe is 8m long, and aeration holes 33 are arranged every 20cm on the branch pipe, facing upward and opposite to the water flow direction. The diameter of the aeration holes 33 is 3cm, and a suffocating plate is provided at the end of the aeration pipe. Such a setting can make the water inflow uniform and solve the problem of sludge deposition in the water inflow; in addition, lyocell fiber is also called lyocell.

[0081] In some embodiments, a sludge suction truck 81 is added above the final sedimentation tank, and the driving operation mode is set based on the sludge sedimentation conditions. The sludge suction truck 81 is run twice each time. In the first time, the sludge suction pipe 82 of the sludge suction truck 81 is run to 1 / 3 of the sedimentation tank and returned. In the second time, the sludge suction pipe 82 of the sludge suction truck 81 is run to the bottom of the sedimentation tank and then returned, thereby realizing automatic and efficient sludge discharge, reducing the labor intensity of employees, and improving operation stability.

[0082] A turbidity meter 61 and a flow meter 62 are installed on the water inlet pipe, and a micro-control unit 83 is installed on the sludge suction truck 81. The total amount of sediment in the inlet water is calculated by the central control computer and compared with the control index, and then the instruction is sent to the micro-control unit 83 on the sludge suction truck 81, so as to achieve the purpose of real-time adjustment of the operation cycle of the sludge suction truck 81.

[0083] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A final sedimentation tank for treating lyocell fiber wastewater, characterized in that: include: Aeration device; The aeration device comprises: an air inlet pipe (1), a main pipe (2), a rectangular branch pipe layer (3) and a plurality of support rods (4); The plurality of support rods (4) and the main pipe (2) are fixed one by one at different positions of the rectangular branch pipe layer (3), and the bottom ends of the plurality of support rods (4) and the bottom ends of the main pipe (2) can abut against the bottom of the water inlet area (5) of the final settling tank, so as to fix the rectangular branch pipe layer (3) in the water inlet area (5); The rectangular branch pipe layer (3) comprises: a plurality of branch pipes (31) and two connecting pipes (32); the plurality of branch pipes (31) are all provided with aeration holes (33); The plurality of branch pipes (31) are arranged at intervals; one of the two connecting pipes (32) is connected to the first ends of the plurality of branch pipes (31), and the other of the two connecting pipes (32) is connected to the second ends of the plurality of branch pipes (31); the gas outlet end of the main pipe (2) is connected to one of the plurality of branch pipes (31); The air inlet end of the main pipe (2) is connected to the air inlet pipe (1).

2. The final settling tank according to claim 1, characterized in that: The opening directions of the plurality of aeration holes (33) are all oriented toward the water inlet direction of the water inlet pipe (6).

3. The final settling tank according to claim 1, characterized in that: The number of the rectangular branch pipe layers (3) is three, namely a first rectangular branch pipe layer (34), a second rectangular branch pipe layer (35) and a third rectangular branch pipe layer (36) uniformly distributed along the axial direction of the water inlet area (5); The first rectangular branch pipe layer (34), the second rectangular branch pipe layer (35) and the third rectangular branch pipe layer (36) are all connected and fixed to the main pipe; The first rectangular branch pipe layer (34), the second rectangular branch pipe layer (35) and the third rectangular branch pipe layer (36) are all fixed one by one to the plurality of support rods (4).

4. The final sedimentation tank according to claim 1, characterized in that: The number of the support rods (4) is three; The three support rods (4) and the main pipe (2) are fixed one by one at four different positions of the rectangular branch pipe layer (3).

5. The final sedimentation tank according to claim 1, characterized in that: The main pipe (2) is made of UPVC material, and / or The material of the plurality of branch pipes (31) is all UPVC material.

6. The final sedimentation tank according to claim 1, characterized in that: The aeration device further comprises: a magnetic suspension fan (11) and a central control computer; The magnetic suspension fan (11) is arranged on the air intake pipe (1) and is connected to the central control computer.

7. The final settling tank according to claim 6, characterized in that: The aeration device further comprises: an electronic pressure gauge (12) arranged on the air inlet pipe (1); The electronic pressure gauge (12) is connected to the central control computer via an electrical signal, and the electronic pressure gauge (12) is located between the magnetic suspension fan (11) and the air outlet end of the air inlet pipe (1).

8. The final settling tank according to claim 1, characterized in that: Also includes: Mud suction device (8); The sludge suction device (8) is used to suck away the sludge in the outlet area (7) of the final sedimentation tank.

9. The final settling tank according to claim 8, characterized in that: The mud suction device (8) comprises: a mud suction vehicle (81) and a mud suction pipe (82); The mud suction end of the mud suction pipe (82) is located in the water outlet area (7), and the mud outlet end of the mud suction pipe (82) is connected to the mud suction vehicle (81).

10. The final settling tank according to claim 9, characterized in that: Also includes: A turbidity meter (61) and a flow meter (62) are sequentially arranged on the water inlet pipe (6); The aeration device also includes: a central control computer; The mud suction device (8) further comprises: a micro-control unit (83) connected to the central control computer by electrical signals; The micro-control unit (83) is arranged on the sludge suction vehicle (81); the turbidity meter (61) and the flow meter (62) are both connected to the central control computer via electrical signals.

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