CN110975344A - Sludge discharge method for sedimentation tank - Google Patents
Sludge discharge method for sedimentation tank Download PDFInfo
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- CN110975344A CN110975344A CN201911350354.8A CN201911350354A CN110975344A CN 110975344 A CN110975344 A CN 110975344A CN 201911350354 A CN201911350354 A CN 201911350354A CN 110975344 A CN110975344 A CN 110975344A
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 269
- 239000010802 sludge Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000010865 sewage Substances 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000005484 gravity Effects 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 239000013049 sediment Substances 0.000 description 15
- 238000000151 deposition Methods 0.000 description 13
- 230000004888 barrier function Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 9
- 238000001556 precipitation Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000008021 deposition Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0045—Plurality of essentially parallel plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge discharge method of a sedimentation tank, which comprises the following steps: providing a sedimentation tank, wherein the sedimentation tank comprises a tank body for accommodating sewage, a plurality of sedimentation pieces and a sludge discharge pipe, the sedimentation pieces are arranged in the tank body along the depth direction of the tank body and divide the inner space of the tank body into a plurality of water passing spaces, and the sedimentation pieces can rotate between a first position and a second position; when the sedimentation member is at the first position, the inclination angle of the sedimentation member relative to the tank body is a first angle, so that sedimentation mud in the sewage is settled on the sedimentation member when the sewage flows through the water passing space, and when the sedimentation member is at the second position, the inclination angle of the sedimentation member relative to the tank body is a second angle, so that the sedimentation mud is separated from the sedimentation member by virtue of gravity and falls into the bottom of the tank body; the sludge discharge pipe is arranged at the bottom of the tank body; when the sedimentation member rotates to the second position, the sedimentation mud settled to the bottom of the tank body and the sewage body are discharged out of the tank body through the mud discharge pipe by means of negative pressure.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a sludge discharge method for a sedimentation tank.
Background
The timely sludge discharge of the sedimentation tank is an important work in the operation management of the sedimentation tank, if the sludge is not discharged in time, anaerobic fermentation can be generated, so that the sludge floats upwards, the normal work of the sedimentation tank is destroyed, and the quality of the effluent water of the sedimentation tank is deteriorated.
Disclosure of Invention
Based on this, it is necessary to provide a sludge discharge method for a sedimentation tank, which is simple in operation and low in energy consumption.
A sludge discharge method of a sedimentation tank comprises the following steps:
providing a sedimentation tank, wherein the sedimentation tank comprises a tank body for accommodating sewage, a plurality of sedimentation pieces and a sludge discharge pipe, the plurality of sedimentation pieces are arranged in the tank body along the depth direction of the tank body and divide the inner space of the tank body into a plurality of water passing spaces, and the sedimentation pieces can rotate between a first position and a second position; when the sedimentation member is in the first position, the inclination angle of the sedimentation member relative to the tank body is a first angle, so that sedimentation mud in the sewage is settled on the sedimentation member when the sewage flows through the water passing space, and when the sedimentation member is in the second position, the inclination angle of the sedimentation member relative to the tank body is a second angle which is larger than the first angle, so that the sedimentation mud is separated from the sedimentation member by means of gravity and falls into the bottom of the tank body; the sludge discharge pipe is arranged at the bottom of the tank body; and
when the sedimentation piece rotates to a second position, the sedimentation mud settled to the bottom of the tank body is synchronously discharged out of the tank body together with the sewage water body through the mud discharge pipe by means of negative pressure.
In one embodiment, the sedimentation tank further comprises a control valve, the control valve is arranged on the sludge discharge pipe, and the control valve is used for controlling the connection and disconnection of the sludge discharge pipe.
In one embodiment, one end of the sludge discharge pipe is used for being connected with a vacuum pump, and the vacuum pump is used for enabling the sludge discharge pipe to form a negative pressure state.
In one embodiment, the first angle is 0-20 degrees, and the second angle is 45-90 degrees.
In one embodiment, the sedimentation member is a sedimentation plate, the sedimentation plates are arranged at intervals along the depth direction of the tank body, the water passing space is formed between any two adjacent sedimentation plates and between the sedimentation plate at the topmost layer and the top of the tank body, and the top of the sedimentation plate is used for bearing the sedimentation mud.
In one embodiment, the sedimentation member is a sedimentation pipe, a plurality of sedimentation pipes are stacked or arranged at intervals along the depth direction of the tank body, the inner space of each sedimentation pipe forms the water passing space, and the inner bottom wall of each sedimentation pipe is used for bearing the sediment sludge.
In one embodiment, the sedimentation tank further comprises a rotating shaft, and the sedimentation member is rotatably arranged in the tank body through the rotating shaft.
In one embodiment, the sedimentation tank further comprises a linkage member connected with the plurality of sedimentation members so as to enable the plurality of sedimentation members to synchronously rotate in the tank body.
In one embodiment, the sedimentation tank further comprises a driving mechanism, the driving mechanism is connected with the sedimentation member, and the driving mechanism is used for driving the sedimentation member to rotate between the first position and the second position.
In one embodiment, the driving mechanism comprises a driving element and a rope body, the driving element is arranged in the tank body, one end of the rope body is arranged on the driving element, the other end of the rope body is connected with the sedimentation piece, and the driving element can reel and reel the rope body to adjust the length of the rope body connected to one end of the sedimentation piece, so that the pulling force of the rope body on the sedimentation piece can be adjusted, and the sedimentation piece can rotate between the first position and the second position.
The sludge discharge method of the sedimentation tank rotates the sedimentation member to the second position, so that the sedimentation sludge settled on the sedimentation member is separated from the sedimentation member quickly by gravity and falls into the bottom of the tank body, the sedimentation sludge settled at the bottom of the tank body is sucked together with the sewage body by the sludge discharge pipe and the negative pressure, the sedimentation sludge settled at the bottom of the tank body is discharged out of the tank body together with the sewage body, the effective sludge discharge of the sedimentation tank is realized, the normal work of the sedimentation tank is ensured, the effluent water quality of the sedimentation tank is ensured to reach the standard, the sedimentation tank is synchronously carried out by sedimentation and a discharge process of the sludge, the whole sludge discharge process is simple to operate, the sludge discharged is thorough and sufficient, the energy consumption of the whole sludge discharge process is low, the equipment damage rate is low, and the sedimentation tank is suitable for wide industrial application processes.
In the scheme, a plurality of rotatable sedimentation pieces are arranged in the tank body along the depth direction of the tank body to divide the inner space of the tank body into a plurality of water passing spaces, so that the interaction time of the sedimentation mud in the sewage and the sewage body is effectively shortened by utilizing the shallow tank theory, when the sedimentation pieces are positioned at a first position (the inclined angle of the sedimentation pieces relative to the tank body is a first angle), the sedimentation mud in the sewage can be quickly settled on the sedimentation pieces when the sewage flows through the water passing spaces, when the sedimentation mud deposited on the sedimentation pieces reaches a certain sedimentation amount, the sedimentation pieces are rotationally switched from the first position to a second position (the inclined angle of the sedimentation pieces relative to the tank body is a second angle which is larger than the first angle), and the sedimentation mud settled on the sedimentation pieces is quickly separated from the sedimentation pieces by means of gravity and falls into the bottom of the tank body, realize depositing the quick settlement of the relative cell body bottom of mud in the sewage, promoted the efficiency of subsiding of the sediment mud in the sewage greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a sedimentation tank according to an embodiment;
FIG. 2 is a schematic view of the sedimentation basin in a second position according to an embodiment;
FIG. 3 is a schematic view of another embodiment of the sedimentation tank with the sedimentation member in a second position;
FIG. 4 is a schematic view of another embodiment of the sedimentation tank with the sedimentation member in a second position;
FIG. 5 is a schematic structural view of a sedimentation tank in another embodiment;
FIG. 6 is a schematic structural view of a settling member in a settling tank in another embodiment;
FIG. 7 is a schematic diagram of the sedimentation tank according to an embodiment;
FIG. 8 is a schematic structural view of a sedimentation tank in another embodiment;
FIG. 9 is a schematic view of an embodiment of the settling tank after the settling member and the rotating shaft are assembled;
FIG. 10 is a schematic view of another embodiment of the sedimentation tank with the sedimentation member and the rotation shaft assembled;
FIG. 11 is a schematic view of another embodiment of the sedimentation tank with the rotating shaft assembled;
FIG. 12 is a schematic view of another embodiment of the sedimentation tank with the rotating shaft assembled;
FIG. 13 is a schematic view showing the structure of a sedimentation tank in another embodiment;
FIG. 14 is a schematic view showing the structure of a sedimentation tank in another embodiment;
FIG. 15 is a schematic view showing the structure of a sedimentation tank in another embodiment;
FIG. 16 is a schematic view showing the structure of a sedimentation tank in another embodiment;
FIG. 17 is a schematic view showing the structure of a sedimentation tank in another embodiment;
FIG. 18 is a schematic view showing the structure of a sedimentation tank in another embodiment;
FIG. 19 is a schematic view showing the structure of a sedimentation tank in another embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the sludge discharging method of the sedimentation tank in one embodiment includes the following steps:
s100, providing a sedimentation tank 100, wherein the sedimentation tank 100 comprises a tank body 110 for accommodating sewage, a plurality of sedimentation pieces 120 and a sludge discharge pipe 101, the plurality of sedimentation pieces 120 are arranged in the tank body 110 along the depth direction of the tank body 110 and divide the inner space of the tank body 110 into a plurality of water passing spaces 130, and the sedimentation pieces 120 can rotate between a first position and a second position; when the sedimentation member 120 is at the first position, the inclination angle of the sedimentation member 120 relative to the tank body 110 is a first angle, so that the sedimentation mud in the sewage is settled onto the sedimentation member 120 when the sewage flows through the water passing space 130, and when the sedimentation member 120 is at the second position, the inclination angle of the sedimentation member 120 relative to the tank body 110 is a second angle, and the second angle is greater than the first angle, so that the sedimentation mud is separated from the sedimentation member 120 by gravity and falls into the bottom of the tank body 110; the sludge discharge pipe 101 is arranged at the bottom of the tank body 110.
S200, when the sedimentation member 120 rotates to the second position, the sedimentation sludge settled at the bottom of the tank body 110 and the sewage water body are discharged out of the tank body 110 through the sludge discharge pipe 101 and by means of negative pressure.
In the sludge discharging method of the sedimentation tank, in the process of rotating the sedimentation member 120 to the second position to realize that the sedimentation sludge settled on the sedimentation member 120 is quickly separated from the sedimentation member 120 by gravity and falls into the bottom of the tank body 120, the sedimentary mud settled to the bottom of the tank body 110 and the sewage body are synchronously pumped by the mud discharging pipe 101 and the negative pressure, thereby discharging the sedimentary mud settled to the bottom of the tank body 110 and the sewage water body to the outside of the tank body 110, realizing effective mud discharge to the sedimentation tank 100, ensuring the normal operation of the sedimentation tank 100, and ensures that the quality of the effluent of the sedimentation tank 100 reaches the standard, the sedimentation tank 100 synchronously carries out the sedimentation and the discharge of the sedimentation mud, the whole mud discharge process is simple to operate, the discharged sedimentation mud is thorough and sufficient, and the whole sludge discharging process has low energy consumption and low equipment damage rate, and is suitable for wide industrial application processes.
In the present embodiment, the inner space of the tank body 110 is divided into the plurality of water passing spaces 130 by arranging the plurality of rotatable settling pieces 120 in the tank body 110 along the depth direction of the tank body 110, so that the interaction time of the sludge in the sewage and the sewage body is effectively shortened by using the shallow tank theory, when the settling piece 120 is in the first position (the inclination angle of the settling piece 120 relative to the tank body 110 is the first angle), the sludge deposited in the sewage can be rapidly settled onto the settling piece 120 when the sewage flows through the water passing space 130, and when the sludge deposited on the settling piece 120 reaches a certain amount, the settling piece 120 is rotationally switched from the first position to the second position (the inclination angle of the settling piece 120 relative to the tank body 110 is the second angle, which is greater than the first angle), so that the sludge settled onto the settling piece 120 is rapidly separated from the settling piece 120 by gravity and falls into the bottom of the settling tank body 110, the sedimentation efficiency of the sedimentation mud in the sewage is greatly improved by realizing the rapid sedimentation of the sedimentation mud in the sewage relative to the bottom of the tank body 120.
As shown in fig. 1 and fig. 2, in an embodiment, the sedimentation tank 100 further includes a control valve 102, the control valve 102 is disposed on the sludge discharge pipe 101, and the control valve 102 is used for controlling the connection and disconnection of the sludge discharge pipe 101, so as to control the start and stop of the sludge discharge operation of the sludge discharge pipe 101. In an embodiment, one end of the sludge discharging pipe 101 is used for being connected with a vacuum pump, and the vacuum pump is used for enabling the sludge discharging pipe 101 to form a negative pressure state, so that the sludge discharging pipe 101 discharges the deposited sludge at the bottom of the tank body 110 and the sewage body to the outside of the tank body 110.
In one embodiment, the first angle is 0 to 20 degrees. That is, when the settling member 120 is at the first position, the inclination angle of the settling member 120 relative to the tank body 110 is 0-20 degrees, that is, when the settling member 120 is at the first position, the settling member 120 is horizontally disposed or obliquely disposed at a relatively small angle relative to the tank body 110, so as to ensure that the settled sludge in the sewage can stably settle on the settling member 120 when the sewage flows through the water passing space 130. Preferably, the first angle is 0 degrees or 10 degrees.
Further, the second angle is 45 ~ 90 degrees, that is to say, when the precipitation piece 120 is in the second position, the inclination of precipitation piece 120 relative cell body 110 is 45 ~ 90 degrees, and when the precipitation piece 120 was in the second position, the precipitation piece 120 becomes another relatively great angle slope setting or perpendicular setting relative cell body 110 to ensure that the mud of depositing can rely on gravity to realize the separation with precipitation piece 120. As shown in fig. 2 to 4, preferably, the second angle is 45 degrees, 75 degrees, or 90 degrees.
It can be understood that, the larger the number of the settling members 120 arranged in the same depth arrangement space of the tank body 110, the smaller the dimension of the water passing space 130 in the depth direction of the tank body 110, thereby causing the faster the settling rate of the sludge deposited in the sewage.
As shown in fig. 1, in one embodiment, a plurality of sedimentation members 120 together form an integral sedimentation assembly 122. The arrangement is convenient for the integral installation and disassembly of the plurality of sedimentation members 120 relative to the tank body 110, and the convenience of assembly and disassembly of the sedimentation tank 100 is improved. Further, in an embodiment, the sedimentation assemblies 122 include a plurality of sets, the plurality of sets of sedimentation assemblies 122 are disposed in the tank body 110 at intervals along the width direction of the tank body 110, in this embodiment, the sedimentation assemblies 122 include two sets, and the two sets of sedimentation assemblies 122 are disposed in the tank body 110 at intervals along the width direction of the tank body 110, it can be understood that, in other embodiments, the number of the sedimentation assemblies 122 may be one set or more than two sets, and the specific arrangement mode may be reasonably selected according to actual situations.
In one embodiment, the plurality of settling members 120 are sequentially arranged along the depth direction of the tank body 110 in a staggered manner; it is understood that in other embodiments, a plurality of settling members 120 are aligned along the depth direction of the tank body 110.
As shown in fig. 1, in an embodiment, the sedimentation member 120 is a sedimentation plate 124, a plurality of sedimentation plates 124 are arranged at intervals along the depth direction of the tank body 110, a water passing space 130 is formed between any two adjacent sedimentation plates 124 and between the topmost sedimentation plate 124 and the top of the tank body 110, and the top of the sedimentation plate 124 is used for bearing the sedimentation mud.
In one embodiment, any two adjacent settling plates 124 are disposed in parallel. Further, any two adjacent precipitation plates 124 are arranged in parallel and at equal intervals, so that the deposited sludge in the sewage has the same sedimentation rate in the water passing space 130 formed between any two adjacent precipitation plates 124, thereby achieving the effect of improving the sedimentation uniformity of the deposited sludge in the sewage. In one embodiment, the distance between any two adjacent precipitation plates 124 is 1cm to 1 m.
As shown in fig. 5, it can be understood that, in an embodiment, the settling member 120 is a settling pipe 126, a plurality of settling pipes 126 are stacked or spaced along the depth direction of the tank body 110, the inner space of each settling pipe 126 constitutes a water passing space 130, and the inner bottom wall of each settling pipe 126 is used for bearing the deposited mud.
As shown in fig. 5, in an embodiment, a plurality of settling tubes 126 are arranged at intervals along the depth direction of the tank body 110 and are stacked along the length direction of the tank body 110; as shown in fig. 6, further, in an embodiment, a plurality of settling tubes 126 are stacked along the depth direction and the length direction of the tank body 110, so as to increase the number of settling tubes 126 arranged in a unit space of the tank body 110, which is beneficial to reducing the size and the floor area of the settling tank 100. In one embodiment, the axes of the plurality of settling tubes 126 are arranged parallel to each other. It is understood that in one embodiment, the tube pitch of the settling tubes 126 is 1cm to 50cm, and the tube pitch of the settling tubes 126 is the vertical distance between the inner top wall of the settling tubes 126 and the inner bottom wall of the settling tubes 126.
In one embodiment, the cross-section of the settling tubes 126 is rectangular or equilateral hexagonal to facilitate a splicing combination between the settling tubes 126, thereby improving the efficiency of assembly of the settling assembly 122 formed by combining a plurality of settling tubes 126.
As shown in fig. 1, in an embodiment, the sedimentation tank 100 further includes a rotating shaft 140, and the sedimentation member 120 is rotatably disposed in the tank body 110 through the rotating shaft 140. In an embodiment, the number of the rotating shafts 140 is multiple, and the rotating shafts 140 correspond to the depositing members 120 one by one, that is, the depositing members 120 are rotatably disposed in the tank body 110 through the corresponding rotating shafts 140. As shown in fig. 7 and 8, it is understood that in other embodiments, the rotating shaft 140 is single, and the sedimentation assembly 122 composed of a plurality of sedimentation members 120 is rotatably disposed in the tank body 110 through the single rotating shaft 140.
As shown in fig. 9, in an embodiment, the rotating shaft 140 is a single-shaft structure, and the rotating shaft 140 is rotatably disposed through the entire sedimentation member 120, so as to realize the relative rotation of the sedimentation member 120 in the tank body 110; in other embodiments, as shown in fig. 10, the rotating shaft 140 may have a double-shaft structure, that is, the rotating shaft 140 includes two base shafts 142, and two sides of the sedimentation member 120 are respectively rotatably connected to the two base shafts 142, so as to realize the relative rotation of the sedimentation member 120 in the tank body 110.
It should be noted that the rotating shaft 140 can be disposed at different positions of the depositing member 120, as shown in fig. 11 and 12, and in one embodiment, the rotating shaft 140 is disposed at an edge or a middle portion of the depositing member 120. As shown in fig. 4, further, the plurality of rotating shafts 140 are respectively disposed at the same corresponding positions of the plurality of sedimentation members 120, so that when the plurality of sedimentation members 120 are sequentially disposed along the depth direction of the tank body 110 in a staggered manner, the plurality of rotating shafts 140 are sequentially disposed along the depth direction of the tank body 110 in a staggered manner, that is, projections of the plurality of rotating shafts 140 on the depth direction of the tank body 110 are sequentially disposed at intervals, in an embodiment, projections of the plurality of rotating shafts 140 on the depth direction of the tank body 110 may be sequentially disposed in parallel; as shown in fig. 3, in other embodiments, the plurality of rotating shafts 140 are respectively disposed at the same corresponding positions of the plurality of settling members 120, so that when the plurality of settling members 120 are aligned along the depth direction of the tank body 110, the plurality of rotating shafts 140 are aligned along the depth direction of the tank body 110, that is, projections of the plurality of rotating shafts 140 in the depth direction of the tank body 110 overlap each other.
In one embodiment, when the sedimentation assembly 122 formed by a plurality of sedimentation members 120 is rotatably disposed in the tank body 110 by a single rotating shaft 140, the single rotating shaft 140 may be disposed at different positions of the sedimentation assembly 122, as shown in fig. 7 and 8, and in one embodiment, the single rotating shaft 140 may be disposed at an edge or a middle portion of the sedimentation assembly 122.
As shown in fig. 9 and 11, in one embodiment, the axial direction of the rotating shaft 140 is parallel or perpendicular to the flowing direction of the sewage. In other embodiments, the axial direction of the rotating shaft 140 may further form a certain included angle with the flowing direction of the sewage, and specifically, the included angle formed between the axial direction of the rotating shaft 140 and the flowing direction of the sewage is 0-45 degrees.
As shown in fig. 13, in an embodiment, the sedimentation tank 100 further includes a driving mechanism 150, the driving mechanism 150 is connected to the sedimentation member 120, and the driving mechanism 150 is configured to drive the sedimentation member 120 to rotate between the first position and the second position.
As shown in fig. 13, in an embodiment, the driving mechanism 150 includes a driving member 152 and a rope 154, the driving member 152 is disposed in the tank body 110, one end of the rope 154 is disposed on the driving member 152, the other end of the rope 154 is connected to the sedimentation member 120, the driving member 152 can reel and reel the rope 154 to adjust the length of the rope 154 connected to one end of the sedimentation member 120, so that the pulling force of the rope 154 on the sedimentation member 120 can be adjusted, and the sedimentation member 120 can rotate between the first position and the second position.
Specifically, initially, the rope 154 is connected to one end of the sedimentation member 120 and has a first length, the rope 154 has a first pulling force on the sedimentation member 120, and the sedimentation member 120 is kept at a first position (the inclination angle of the sedimentation member 120 relative to the tank body 110 is a first angle) under the first pulling force of the rope 154, and at this time, the sediment sludge in the sewage can be rapidly settled on the sedimentation member 120 when the sewage flows through the water passing space 130; when the deposited sludge on the settling member 120 reaches a certain deposition amount, the rope body 154 is unreeled through the driving member 152 to increase the length of the rope body 154 connected to one end of the settling member 120, thereby reducing the pulling force of the rope body 154 on the settling member 120, because the deposited sludge with a certain deposition amount is deposited on the settling member 120 at this time, the overall downward acting force of the settling member 120 is increased under the action of the gravity of the deposited sludge, and the upward pulling force of the current rope body 154 on the settling member 120 is reduced, thereby forming an overall downward resultant force on the settling member 120, the settling member 120 is rotationally switched from the current first position to the second position under the action of the overall downward resultant force of the settling member 120, and when the settling member 120 is rotationally switched to the second position, the length of the rope body 154 connected to one end of the settling member 120 is increased from the initial first length to the current second length, so that the pulling force of the rope body 154 on the settling member 120 is reduced from the initial first pulling force to the current second pulling force At this time, the sludge settled on the settling member 120 can be rapidly separated from the settling member 120 by gravity and fall into the bottom of the tank body 110.
After the sludge deposited on the settling member 120 is discharged, the rope 154 can be wound by the driving member 152 to reduce the length of the rope 154 connected to one end of the settling member 120, so as to increase the pulling force of the rope 154 on the settling member 120, at this time, the overall downward acting force of the settling member 120 is significantly reduced due to the absence of the load of the deposited sludge on the settling member 120, and the upward pulling force of the current rope 154 on the settling member 120 is increased, so that the settling member 120 forms an overall upward resultant force, and therefore, the settling member 120 is rotationally switched from the current second position to the initial first position under the overall upward resultant force of the settling member 120, at this time, the length of the rope 154 connected to one end of the settling member 120 is restored to the initial first length again, so that the magnitude of the pulling force of the rope 154 on the settling member 120 is restored to the initial first pulling force again, and the sludge in the sewage can be re-settled relative to the settling member 120 when the sewage flows through the settling space 130, therefore, the rotating switching of the depositing element 120 between the first position and the second position is realized through the winding and unwinding cycle operation of the driving element 152 on the rope body 154.
As shown in fig. 13, in an embodiment, the driving member 152 includes a driving shaft 156, the driving shaft 156 is rotatably disposed in the tank body 110, specifically, the driving shaft 156 is rotatably disposed between two opposite inner sidewalls of the tank body 110, one end of the rope 154 away from the sedimentation member 120 is wound around the driving shaft 156, and the driving shaft 156 is driven to rotate around its own axial direction to wind and unwind the rope 154, so as to adjust the length of the rope 154 connected to one end of the sedimentation member 120, so that the pulling force of the rope 154 on the sedimentation member 120 is adjustable, and further, the sedimentation member 120 is rotated between the first position and the second position.
As shown in fig. 14, in an embodiment, the sedimentation tank 100 further includes an elastic member 160, the sedimentation member 120 is disposed in the tank body 110 through the elastic member 160, and the elastic member 160 is configured to elastically support the sedimentation member 120 through elastic deformation thereof, so as to enable the sedimentation member 120 to rotate between the first position and the second position.
Specifically, initially, the sedimentation member 120 is kept at the first position (the inclination angle of the sedimentation member 120 with respect to the tank body 110 is a first angle) under the elastic supporting force of the elastic member 160, and then the sludge deposited in the sewage can be quickly settled on the sedimentation member 120 when the sewage flows through the overflow space 130; when the deposited mud on the sediment member 120 reaches a certain deposition amount, the pressing force of the sediment member 120 on the elastic member 160 is increased under the action of gravity of the deposited mud, and at the moment, the pressing force of the sediment member 120 on the elastic member 160 will exceed the range of the elastic supporting force of the elastic member 160, so that the sediment member 120 forms an integral downward resultant force, therefore, the sediment member 120 is rotationally switched from the current first position to the second position under the action of the integral downward resultant force of the sediment member 120, and the deposited mud deposited on the sediment member 120 can be rapidly separated from the sediment member 120 by means of gravity and fall into the bottom of the pool body 110.
After the sludge deposited on the settling member 120 is discharged, the pressing force of the settling member 120 on the elastic member 160 is reduced significantly due to the absence of the load of the sludge deposited, and the pressing force of the settling member 120 on the elastic member 160 is lower than the elastic supporting force of the elastic member 160, so that the settling member 120 forms an overall upward resultant force, and therefore, the settling member 120 is rotationally switched from the current second position to the initial first position under the action of the overall upward resultant force of the settling member 120 itself, and the sludge deposited in the sewage can be settled again relative to the settling member 120 when the sewage flows through the water passing space 130.
As shown in fig. 14, in an embodiment, the elastic member 160 includes a plurality of elastic members 160, the plurality of elastic members 160 correspond to the plurality of settling members 120 one by one, and the elastic members 160 are configured to elastically support the corresponding settling members 120 by elastic deformation thereof, so as to rotate the corresponding settling members 120 between the first position and the second position; it is understood that in other embodiments, as shown in fig. 15, the elastic member 160 is single, that is, the settling assembly 122 composed of the plurality of settling members 120 is disposed in the tank body 110 through the single elastic member 160, and the single elastic member 160 is used for elastically supporting the settling assembly 122 composed of the plurality of settling members 120 through its own elastic deformation, so as to rotate the settling assembly 122 composed of the plurality of settling members 120 between the first position and the second position.
As shown in fig. 16, in an embodiment, the sedimentation tank 100 further includes a float 170, the float 170 may be, but is not limited to, a ball-shaped structure, the float 170 is connected to the sedimentation member 120, the float 170 can float on the surface of the sewage or suspend in the sewage to provide buoyancy to the sedimentation member 120, and the volume of the float 170 submerged in the sewage can be adjusted by changing the depth of the water level of the sewage in the tank body 110, so that the buoyancy provided by the float 170 to the sedimentation member 120 can be adjusted, and the sedimentation member 120 can rotate between the first position and the second position.
Specifically, initially, the depth of the sewage level in the tank body 110 is a first depth, the volume of the floating body 170 immersed in the sewage is a first volume, the upper buoyancy provided by the floating body 170 to the sedimentation member 120 is a first upper buoyancy, and the sedimentation member 120 is kept at a first position (the inclination angle of the sedimentation member 120 relative to the tank body 110 is a first angle) under the action of the first upper buoyancy provided by the floating body 170, so that the sediment sludge in the sewage can be rapidly settled onto the sedimentation member 120 when the sewage flows through the water passing space 130; when the sediment sludge deposited on the sedimentation member 120 reaches a certain deposition amount, the water level depth of the sewage in the tank body 110 is reduced to reduce the volume of the floating body 170 immersed in the sewage, so as to reduce the magnitude of the upward floating force provided by the floating body 170 to the sedimentation member 120, because the sediment sludge of a certain deposition amount is deposited on the sedimentation member 120 at this time, the overall downward acting force of the sedimentation member 120 is increased under the gravity action of the sediment sludge, and the upward floating force provided by the current floating body 170 to the sedimentation member 120 is reduced, so that the sedimentation member 120 forms an overall downward resultant force, therefore, the sedimentation member 120 is rotationally switched from the current first position to the second position under the action of the overall downward resultant force of the sedimentation member 120, when the sedimentation member 120 is rotationally switched to the second position, the depth of the sewage level in the tank body 110 is reduced from the initial first depth to the current second depth, so that the volume of the floating body 170 immersed in the sewage is reduced from the initial first volume to the current second volume, so that the floating force provided by the floating body 170 to the settling member 120 is reduced from the initial first upper buoyancy to the current second upper buoyancy, and the settled mud settled on the settling member 120 can be rapidly separated from the settling member 120 by gravity and fall to the bottom of the tank body 110.
After the sludge deposited on the sedimentation member 120 is discharged, the water level depth of the sewage in the tank body 110 is increased to increase the volume of the floating body 170 immersed in the sewage, so as to increase the floating force provided by the floating body 170 to the sedimentation member 120, at this time, the overall downward acting force of the sedimentation member 120 is significantly reduced due to the absence of the load of the deposited sludge on the sedimentation member 120, and the floating force provided by the current floating body 170 to the sedimentation member 120 is increased, so that the sedimentation member 120 forms an overall upward resultant force, therefore, the sedimentation member 120 is rotationally switched from the current second position to the initial first position under the overall upward resultant force of the sedimentation member 120, at this time, the depth of the sewage in the tank body 110 is restored to the initial first depth again, and the volume of the floating body 170 immersed in the sewage is restored to the first volume and is reduced again, so that the floating force provided by the floating body 170 to the sedimentation member 120 is restored to the initial first upper buoyancy, the sludge in the sewage is re-settled relative to the settling member 120 as the sewage flows through the overflow space 130.
As shown in fig. 16, in an embodiment, the float 170 includes a plurality of floats 170, the plurality of floats 170 corresponding to the plurality of settling members 120 one-to-one, the floats 170 for providing an upward buoyancy to the corresponding settling member 120 so as to rotate the corresponding settling member 120 between the first position and the second position; it will be appreciated that in other embodiments, as shown in fig. 17, the float 170 is single, i.e. the sedimentation assembly 122 of the plurality of sedimentation members 120 is provided within the tank body 110 by the single float 170, so as to rotate the sedimentation assembly 122 of the plurality of sedimentation members 120 between the first and second positions.
As shown in fig. 13, in an embodiment, the sedimentation tank 100 further includes a linkage member 180, and the linkage member 180 is connected to the plurality of sedimentation members 120, so that the plurality of sedimentation members 120 rotate synchronously in the tank body 110. By such arrangement, one of the settling pieces 120 is driven to rotate in the tank body 110, so as to drive the other remaining settling pieces 120 of the settling pieces 120 to synchronously rotate in the tank body 110, thereby greatly reducing the number of driving units for driving the settling pieces 120 to rotate, and effectively reducing the production cost of the settling tank 100.
As shown in fig. 18 and 19, in an embodiment, the sedimentation tank 100 further includes a barrier 190, the barrier 190 is disposed at an inlet end and/or an outlet end of the water passing space 130, the barrier 190 has a water blocking state and a water discharging state, and the barrier 190 can block and conduct the flow of the sewage newly entering the tank body 110 through the water passing space 130 when the barrier 190 is in the water blocking state and the water discharging state, respectively.
When the sedimentation member 120 is rotated to the second position to realize sludge discharge by the gravity action of the sedimentation sludge itself, only a very small portion of the sedimentation sludge in the newly-entered sewage can be settled on the sedimentation member 120 when the sewage flows through the water passing space 130, so that the sedimentation of the sedimentation sludge in the sewage is affected, and the quality of the effluent of the final sedimentation tank 100 is not up to standard. By arranging the barrier 190 at the inlet end and/or the outlet end of the overflow space 130, when the sedimentation member 120 rotates to the second position, the barrier 190 can be set to a water retaining state to prevent the newly entered sewage from flowing through the overflow space 130, so as to prevent the deposited mud in the newly entered sewage from affecting the quality of the effluent of the sedimentation tank 100 due to the fact that the deposited mud cannot be effectively deposited on the sedimentation member 120, and then when the sedimentation member 120 rotates to be switched to the first position, the barrier 190 is switched to a water discharging state to conduct the flow of the newly entered sewage through the overflow space 130; and when the sedimentation member 120 rotates to the first position, the barrier member 190 can be kept in the water retaining state for a period of time to prolong the retention time of the pre-entered sewage in the water passing space 130, so that the deposited mud in the pre-entered sewage can be fully deposited on the sedimentation member 120, and then the barrier member 190 is switched to the water discharging state to conduct the flow of the newly entered sewage relative to the water passing space 130, thereby realizing the effective deposition of the deposited mud in the newly entered sewage in the water passing space 130.
As shown in fig. 18 and 19, in one embodiment, the barrier 190 is pivotally connected to the top of the tank body 110 to switch the barrier 190 between a water-blocking state and a water-discharging state. Specifically, the blocking member 190 is rotatably connected to the top of the tank body 110 by a connecting shaft.
As shown in fig. 18 and 19, in an embodiment, the sedimentation tank 100 further includes a first flow guiding member 191, the first flow guiding member 191 is disposed at the inlet end of the water passing space 130, and the first flow guiding member 191 is used for uniformly distributing the sewage to be input into the water passing space 130, so as to enhance the water inlet uniformity of the water passing space 130. In one embodiment, the first diversion member 191 may be, but is not limited to, a partition plate having a plurality of water passing holes uniformly spaced apart.
In an embodiment, the sedimentation tank 100 further includes a second flow guiding member 192, the second flow guiding member 192 is disposed at an outlet end of the water passing space 130, and the second flow guiding member 192 is used for uniformly distributing the sewage output from the water passing space 130, so as to enhance the uniformity of the water output from the water passing space 130. In one embodiment, the second fluid guiding member 192 may be, but is not limited to, a partition plate having a plurality of water passing holes uniformly spaced apart.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A sludge discharge method of a sedimentation tank is characterized by comprising the following steps:
providing a sedimentation tank, wherein the sedimentation tank comprises a tank body for accommodating sewage, a plurality of sedimentation pieces and a sludge discharge pipe, the plurality of sedimentation pieces are arranged in the tank body along the depth direction of the tank body and divide the inner space of the tank body into a plurality of water passing spaces, and the sedimentation pieces can rotate between a first position and a second position; when the sedimentation member is in the first position, the inclination angle of the sedimentation member relative to the tank body is a first angle, so that sedimentation mud in the sewage is settled on the sedimentation member when the sewage flows through the water passing space, and when the sedimentation member is in the second position, the inclination angle of the sedimentation member relative to the tank body is a second angle which is larger than the first angle, so that the sedimentation mud is separated from the sedimentation member by means of gravity and falls into the bottom of the tank body; the sludge discharge pipe is arranged at the bottom of the tank body; and
when the sedimentation piece rotates to a second position, the sedimentation mud settled to the bottom of the tank body is synchronously discharged out of the tank body together with the sewage water body through the mud discharge pipe by means of negative pressure.
2. The sludge discharging method as claimed in claim 1, wherein the sedimentation tank further comprises a control valve, the control valve is arranged on the sludge discharging pipe, and the control valve is used for controlling the connection and disconnection of the sludge discharging pipe.
3. The sludge discharging method as claimed in claim 1, wherein one end of the sludge discharging pipe is used for being connected with a vacuum pump, and the vacuum pump is used for enabling the sludge discharging pipe to form a negative pressure state.
4. A method of discharging sludge according to claim 1 wherein the first angle is 0 to 20 degrees and the second angle is 45 to 90 degrees.
5. The sludge discharge method of claim 1, wherein the settling member is a plurality of settling plates, the settling plates are arranged at intervals along the depth direction of the tank body, the water passing space is formed between any two adjacent settling plates and between the topmost settling plate and the top of the tank body, and the tops of the settling plates are used for bearing the deposited sludge.
6. The sludge discharge method according to claim 1, wherein the settling member is a plurality of settling tubes, the settling tubes are stacked or spaced apart in a depth direction of the tank body, an inner space of each settling tube constitutes the water passing space, and an inner bottom wall of each settling tube is used for bearing the deposited sludge.
7. The sludge discharge method as claimed in claim 1, wherein the sedimentation tank further comprises a rotating shaft, and the sedimentation member is rotatably provided in the tank body through the rotating shaft.
8. The method of discharging sludge according to claim 1 wherein the settling tank further comprises a linkage member connected to the plurality of settling members for synchronous rotation of the plurality of settling members within the tank body.
9. The method of discharging sludge according to claim 1 wherein the settling tank further comprises a drive mechanism coupled to the settling member, the drive mechanism configured to rotate the settling member between the first position and the second position.
10. The mud discharging method as claimed in claim 9, wherein the driving mechanism comprises a driving member and a rope, the driving member is disposed in the pond, one end of the rope is disposed on the driving member, the other end of the rope is connected to the settling member, and the driving member is capable of winding and unwinding the rope to adjust the length of the rope connected to one end of the settling member, so that the pulling force of the rope on the settling member is adjustable, and the settling member is rotated between the first position and the second position.
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