Intensive sewage advanced treatment tank and treatment process thereof

Abstract

This invention discloses an intensive wastewater deep treatment tank and its treatment process, relating to the field of wastewater treatment technology. The intensive wastewater deep treatment tank includes a treatment tank with an inlet pipe and an outlet pipe installed on two opposite side walls; it also includes: a shell first, fixedly connected to the outlet pipe; a cavity second, penetrating inside the shell first and communicating with the outlet pipe; a turntable, rotatably connected to the shell first; multiple cavities first, located inside the turntable and arranged in a circumferential array; each cavity first is fixedly equipped with a filter; a sludge discharge port is located at the bottom of the shell first and perpendicular to the cavity second; and a drive unit is located on one side of the shell. The multiple filters of this invention can circulate and intercept small flocs and sludge particles in the water flow, and the rotation of the turntable enables the filters to self-clean, eliminating the need for frequent shutdowns for maintenance and filter replacement, thus effectively improving wastewater treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an intensive wastewater deep treatment tank and its treatment process. Background Technology

[0002] Rectangular secondary sedimentation tanks are widely used in municipal and industrial wastewater treatment due to their compact layout and ease of integration with other rectangular structures.

[0003] In actual operation, secondary sedimentation tanks often experience various special conditions (such as a large influx of rainwater into the municipal water system during the rainy season, leading to a surge in the influent volume of the wastewater treatment plant and the hydraulic load on the surface of the secondary sedimentation tank exceeding the design value; water temperature changes affecting the flocculation and settling performance of sludge, etc.), resulting in the inclusion of flocs and sludge particles in the effluent. To ensure stable effluent quality, a filtration device needs to be added at the effluent end of the secondary sedimentation tank as a guarantee unit for advanced treatment. However, existing filter screens are prone to clogging after intercepting suspended solids, leading to a reduction in effluent flow. The filter screens require frequent maintenance or replacement, which often necessitates shutting down or dismantling the entire series of equipment. This process is complex, time-consuming, and labor-intensive. Wastewater treatment is a public service process that requires continuous operation; frequent shutdowns for maintenance can easily affect the wastewater treatment efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an intensive wastewater deep treatment tank and its treatment process to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intensive wastewater deep treatment tank, comprising a treatment tank, wherein an inlet pipe and an outlet pipe are respectively installed on two opposite side walls of the treatment tank; further comprising: a shell first, fixedly connected to the outlet pipe; a cavity second, which is opened through the inner side of the shell first and communicates with the outlet pipe; a turntable, rotatably connected to the shell first; multiple cavities first, opened inside the turntable and arranged in a circumferential array; each cavity first is fixedly installed with a filter; a sludge discharge port is opened at the bottom of the shell first and is distributed perpendicularly to the cavity second; a drive unit is disposed on one side of the shell and is used to drive the turntable to rotate, switch filters, and clean filters.

[0006] As a further embodiment of the present invention, a pipe is fixedly connected inside the housing; the pipe is distributed perpendicularly to the cavity and is used to connect two filters in a vertical state.

[0007] As a further embodiment of the present invention, a second housing is fixedly connected to the outlet end of the first housing; an impeller is rotatably connected inside the second housing; a mounting disk is fixedly connected to the rotating shaft of the impeller, and a plurality of push rods arranged in a circumferential array are slidably connected to the mounting disk; an elastic band is provided on the outer side of the push rod; a plurality of sliders are fixedly connected to the outer wall of the elastic band, and the plurality of sliders are arranged in a circumferential array about the impeller and are all slidably connected to the second housing; one of the sliders is hinged to a connecting rod, and an insertion rod is hinged to the end of the connecting rod away from the slider; the insertion rod is slidably connected to the first housing; a plurality of insertion blocks arranged in a circumferential array are fixedly connected to the side wall of the turntable, the number of insertion blocks being equal to the number of filters, and capable of being inserted into the insertion rod.

[0008] As a further embodiment of the present invention, the insert block is provided with a guide slope, and the insert rod is set into a cone shape at one end near the insert block.

[0009] As a further embodiment of the present invention, the drive unit includes a sprocket one; the sprocket one is fixedly mounted on the rotating shaft of the turntable, and is connected to a sprocket two via a chain one, and the sprocket two is connected to a motor.

[0010] As a further embodiment of the present invention, a drain pipe is detachably installed at the bottom of the housing, and the drain pipe is connected to the slag discharge port; a cover plate is hinged to the bottom end of the drain pipe; a cylinder is fixedly connected to the drain pipe, and a piston is slidably installed in the cylinder; a drive mechanism for driving the piston to reciprocate is provided on the side of the piston.

[0011] As a further embodiment of the present invention, the driving mechanism includes a cam, which is disposed on the side of the piston and is used to drive the piston to move; a sprocket three is fixedly connected to the rotating shaft of the cam, and the sprocket three is connected to a sprocket four through a chain two; the sprocket four is fixedly installed on the rotating shaft of the impeller.

[0012] As a further embodiment of the present invention, the cylinder is arranged at an angle.

[0013] As a further embodiment of the present invention, the sewage pipe is threadedly connected to the housing.

[0014] An intensive wastewater deep treatment process includes the following steps:

[0015] Step 1: Inject the wastewater into the treatment tank through the inlet pipe. Under the action of the perforated rectifier plate, the water flow is evenly distributed throughout the entire vertical section of the treatment tank, and the water flow slowly from left to right.

[0016] Step 2: The water overflowing from the outlet weir after treatment flows into the outlet pipe and enters the left cavity through the left inlet end of the shell.

[0017] Step 3: The filter located in the left cavity performs deep treatment on the water flow, intercepting tiny flocs and sludge particles in the water flow;

[0018] Step 4: The purified water then enters the second chamber from the right end of the left filter, then enters the first chamber on the right side through the right filter before being discharged.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention utilizes a rotating disc, multiple filters, and a drive unit. The filters are arranged in a circular array around the disc. The drive unit periodically rotates the disc counterclockwise by a certain angle. This counterclockwise rotation allows the filter carrying flocs and sludge particles to rotate to the bottom first. As the water inside the filter flows out under gravity, it washes away the flocs and sludge particles adhering to the outer wall of the filter. After being cleaned, the filter can be circulated and rotated back to the leftmost position for wastewater treatment. The rotation process can be completed in a short time, avoiding any impact on wastewater treatment efficiency. Furthermore, filter replacement and cleaning can be completed automatically, significantly improving wastewater treatment efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0024] Figure 4 This is a schematic diagram of the housing structure of the present invention;

[0025] Figure 5 This is a cross-sectional view of the installation relationship between the housing, turntable, and filter of the present invention;

[0026] Figure 6 This is a partial structural diagram of the present invention;

[0027] Figure 7 This is a schematic diagram of the insertion rod and insertion block structure of the present invention;

[0028] Figure 8 This is a schematic diagram illustrating the working principle of the push rod, elastic band, and slider of the present invention;

[0029] Figure 9 This is a schematic diagram of the drive mechanism structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the working state of the present invention;

[0031] Figure 11 This is a process flow diagram of the present invention.

[0032] The attached figures are labeled as follows:

[0033] 1-Treatment tank, 2-Inlet pipe, 3-Perforated rectifier plate, 4-Outlet weir, 5-Outlet pipe, 6-Shell 1, 7-Turntable, 8-Cavity 1, 9-Filter, 10-Cavity 2, 11-Pipe, 12-Shell 2, 13-Mounting plate, 14-Push rod, 15-Elastic band, 16-Slider, 17-Connecting rod, 18-Insertion rod, 19-Insertion block, 20-Sprocket 1, 21-Sprocket 2, 22-Motor, 23-Drain pipe, 24-Cover plate, 25-Cylinder, 26-Piston, 27-Spring 1, 28-Cam, 29-Sprocket 3, 30-Sprocket 4, 31-Impeller, 32-Slag discharge port, 33-Spring 2. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-11 The present invention provides a technical solution: an intensive wastewater deep treatment tank, including a treatment tank 1, wherein an inlet pipe 2 and an outlet pipe 5 are respectively installed on two opposite side walls of the treatment tank 1; it also includes: a shell 6, a turntable 7, multiple cavities 8, cavities 10, and a sludge discharge port 32; the shell 6 is fixedly connected to the outlet pipe 5; the cavity 10 is opened through the inner side of the shell 6 and communicates with the outlet pipe 5;

[0036] The turntable 7 is rotatably connected to the housing 6; multiple cavities 8 are opened inside the turntable 7 and arranged in a circular array; each cavity 8 is fixedly installed with a filter 9; the slag discharge port 32 is opened at the bottom of the housing 6 and is distributed perpendicularly to the cavity 10; the drive unit is set on the side of the housing 6 and is used to drive the turntable 7 to rotate, switch the filter 9, and clean the filter 9.

[0037] refer to Figure 1 and Figure 2After the wastewater is injected into the treatment tank 1 through the inlet pipe 2, the perforated flow straightener 3, located on the side of the treatment tank 1 near the inlet pipe 2, ensures that the water flow is evenly distributed throughout the entire vertical section of the treatment tank. The water flows slowly from left to right, and most of the flocs and sludge particles settle to the bottom of the treatment tank 1 by gravity. Then, the treated water overflows into the outlet weir 4, flows into the outlet pipe 5, and enters the left cavity 8 through the left inlet end of the shell 6. The filter 9 located in the left cavity 8 performs deep treatment on the water flow, intercepting the tiny flocs and sludge particles in the water flow. Then, the purified water enters the cavity 10 from the right end of the left filter 9, and then enters the right cavity 8 through the right filter 9 before being discharged. It should be noted that in the above treatment process, only the leftmost filter 9 plays a filtering role, and the tiny flocs and sludge particles in the water flow are completely intercepted by the left filter 9. Figure 10 As shown, the drive unit drives the turntable 7 to rotate counterclockwise by a certain angle in the v2 direction at regular intervals. The rotation angle of the turntable 7 is related to the number of filters 9. For example, if there are 4 filters 9, the turntable 7 rotates 90° each time; if there are 8 filters 9, the turntable 7 rotates 45° each time. The following explanation uses an example of 8 filters 9 in the turntable 7. After the drive unit drives the turntable 7 to rotate 45°, the filter 9 initially located on the far left rotates to the lower left side, carrying the intercepted flocs and sludge particles. During the rotation of the filter 9, the cavity 8 and the filter 9 are filled with water. The filter 9 initially located in the upper left clean state rotates to the far left and immediately starts water treatment. When the filter 9 carrying the intercepted flocs and sludge particles rotates to the bottom, the cavity 8 where the filter 9 is installed rotates to connect with the sludge discharge port 32. The water inside the filter 9 flows out to the outside, washing away the flocs attached to the outer wall of the filter 9. The flocs are directly discharged from the sludge discharge port 32. This invention uses the turntable 7 The system comprises multiple filters 9 arranged in a circular array around a rotating disc 7. The drive unit periodically rotates the disc 7 counter-clockwise by a certain angle. This counter-clockwise rotation allows the filters 9 carrying flocs and sludge particles to reach the bottom first. As the water flows out of the filters 9 under gravity, it washes away the flocs and sludge particles adhering to the outer wall of the filters 9. After cleaning, the filters 9 can be circulated and rotated back to the leftmost position for wastewater treatment. The rotation of the disc 7 can be completed in a short time, avoiding any impact on wastewater treatment efficiency. Furthermore, the replacement and cleaning of the filters 9 can be automated, significantly improving wastewater treatment efficiency. The integration of multiple filters 9 within a single rotating disc 7 reduces the floor space occupied by the filtration device. The filters 9 and the disc 7 can be fixed together by threads. When a filter 9 needs replacement, it can be removed from the sludge discharge port 32 once it has rotated to the bottom, improving the replacement efficiency.

[0038] Specifically, such as Figure 2 and Figure 5 As shown, a pipe 11 is fixedly connected inside the housing 6; the pipe 11 is perpendicular to the cavity 10 and is used to connect two vertically positioned filters 9; through the setting of the pipe 11, the uppermost and lowermost cavities 8 can be connected, and the clean water in the uppermost cavity 8 can enter the inner side of the lower filter 9 through the pipe 11, increasing the water flow rate for backwashing the lower filter 9 and improving the cleaning efficiency of the filter 9.

[0039] Specifically, such as Figure 2 , Figures 6-8 As shown, the outlet end of the first housing 6 is fixedly connected to the second housing 12; an impeller 31 is rotatably connected inside the second housing 12; a mounting disk 13 is fixedly connected to the rotating shaft of the impeller 31, and a plurality of push rods 14 arranged in a circumferential array are slidably connected to the mounting disk 13; an elastic band 15 is provided on the outer side of the push rod 14; a plurality of sliders 16 are fixedly connected to the outer wall of the elastic band 15, and the plurality of sliders 16 are arranged in a circumferential array about the impeller 31, and are all slidably connected to the second housing 12; one of the sliders 16 is hinged to a connecting rod 17, and an insertion rod 18 is hinged to the end of the connecting rod 17 away from the slider 16; the insertion rod 18 is slidably connected to the first housing 6; a plurality of insertion blocks 19 arranged in a circumferential array are fixedly connected to the side wall of the turntable 7, the number of insertion blocks 19 being equal to the number of filters 9, and capable of being inserted into the insertion rod 18.

[0040] refer to Figure 2 Water flowing from the right end of casing 6 enters casing 2 (12) and, under the influence of gravity, drives impeller 31 to rotate as it flows downwards. The rotation of impeller 31 causes mounting plate 13 and push rod 14 to rotate synchronously. Figure 8As shown, when push rod 14 moves in the v1 direction under centrifugal force, push rod 14 drives elastic band 15 to expand outward. Elastic band 15 drives slider 16 to move outward synchronously. Slider 16 at the top drives one end of connecting rod 17 to move synchronously. The other end of connecting rod 17 drives insertion rod 18 to move closer to insertion block 19, so that insertion rod 18 and insertion block 19 are inserted into each other. Through the insertion of insertion rod 18 and insertion block 19, the turntable 7 and housing 6 are relatively fixed, and the filter 9 on the left side stably performs deep filtration of water flow. As the amount of flocs attached to the surface of filter 9 increases, filter 9 gradually becomes clogged, the water flow through impeller 31 gradually decreases, and the rotational speed of impeller 31 increases accordingly. As the water flow decreases, the centrifugal force of the push rod 14 decreases, and the elastic band 15, under the action of elasticity, drives the slider 16 to retract inward. The slider 16 drives the insertion rod 18 to move away from the insertion block 19 through the connecting rod 17. Until the insertion rod 18 disengages from the insertion block 19, the drive unit can drive the turntable 7 to rotate and replace the filter 9. After the filter 9 is replaced, the water flow returns to its optimal state, and the centrifugal force applied by the impeller 31 to the push rod 14 reaches its maximum state again, and the insertion rod 18 re-engages with the insertion block 19. It should be noted that a speed reducer can be set between the impeller 31 and the mounting plate 13 to make the centrifugal force of the push rod 14 greater and the sensing of water flow more sensitive.

[0041] Specifically, such as Figure 7 The insertion block 19 is provided with a guide slope, and the insertion rod 18 is set in a conical shape at one end near the insertion block 19. With the setting of the guide slope and the conical shape, when the insertion rod 18 is inserted into the insertion block 19, the position of the insertion block 19 can be corrected to ensure that the cavity 1 8 and the cavity 2 10 are in a perfect communication state.

[0042] Specifically, such as Figure 6 The drive unit includes a first sprocket 20; the first sprocket 20 is fixedly installed on the rotating shaft of the turntable 7 and is connected to a second sprocket 21 via a first chain; the second sprocket 21 is connected to a motor 22; when the motor 22 starts, the second sprocket 21 drives the first sprocket 20 to rotate via the first chain, and the first sprocket 20 drives the turntable 7 to rotate.

[0043] Specifically, such as Figure 2 , Figure 3 , Figure 6 and Figure 9As shown, a drain pipe 23 is detachably installed at the bottom of the housing 6, and the drain pipe 23 is connected to the slag discharge port 32; a cover plate 24 is hinged to the bottom end of the drain pipe 23; a cylinder 25 is fixedly connected to the drain pipe 23, and a piston 26 is slidably installed inside the cylinder 25; a drive mechanism for driving the piston 26 to reciprocate is provided on the side of the piston 26; the drive mechanism includes a cam 28, which is located on the side of the piston 26 and is used to drive the piston 26 to move; a sprocket 3 29 is fixedly connected to the rotating shaft of the cam 28, and the sprocket 3 29 is connected to a sprocket 4 30 through a chain 2; the sprocket 4 30 is fixedly installed on the rotating shaft of the impeller 31.

[0044] When impeller 31 rotates, it drives sprocket 30 and chain 2 to rotate sprocket 39 synchronously, which in turn drives cam 28 to rotate synchronously; Figure 3 As shown, when the cam 28 rotates, it works with the return spring 27 to drive the piston 26 to reciprocate within the cylinder 25. During the reciprocating motion of the piston 26, it can drive the water in the uppermost chamber 8, the pipe 11, and the lowermost chamber 8 to vibrate, which can help the flocs and particles attached to the lowermost filter 9 to fall off, reduce the pressure on the subsequent backwash filter 9, and improve the cleaning effect of the filter 9. After the piston 26 has been working for a period of time, the cover plate 24 is opened by an external drive device to discharge the water in the uppermost chamber 8, the pipe 11, and the lowermost chamber 8, and the water flow backwashes the lowermost filter 9.

[0045] Specifically, such as Figure 3 As shown, the cylinder 25 is arranged at an angle to prevent flocs and particles from entering the cylinder 25.

[0046] Specifically, such as Figure 3 As shown, the drain pipe 23 is threadedly connected to the housing 6; this allows for easy disassembly of the drain pipe 23 and convenient replacement of the filter 9.

[0047] An intensive wastewater deep treatment process includes the following steps:

[0048] Step 1: Inject the wastewater into the treatment tank 1 through the inlet pipe 2. Under the action of the perforated rectifier plate 3, the water flow is evenly distributed throughout the entire vertical section of the treatment tank, and the water flow slowly from left to right.

[0049] Step 2: The water overflowing from the outlet weir 4 after treatment flows into the outlet pipe 5 and enters the left cavity 8 through the left inlet end of the shell 6.

[0050] Step 3: The filter 9 located in the left cavity 8 performs deep treatment on the water flow, intercepting tiny flocs and sludge particles in the water flow;

[0051] Step 4: The purified water then enters the cavity 2 10 from the right end of the left filter 9, and then enters the right cavity 1 8 through the right filter 9 before being discharged.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intensive wastewater deep treatment tank, comprising a treatment tank (1), wherein an inlet pipe (2) and an outlet pipe (5) are respectively installed on two opposite side walls of the treatment tank (1); characterized in that: Also includes: The housing (6) is fixedly connected to the water outlet pipe (5); Cavity 2 (10) is opened through the inside of shell 1 (6) and is connected to the water outlet pipe (5); Turntable (7) is rotatably connected to housing 1 (6); Multiple cavities (8) are located inside the turntable (7) and arranged in a circular array; each cavity (8) is fixedly equipped with a filter (9). The slag discharge port (32) is located at the bottom of the shell (6) and is perpendicular to the cavity (10); The drive unit is located on the side of housing 1 (6) and is used to drive the turntable (7) to rotate, switch the filter (9), and clean the filter (9). The outlet end of the first housing (6) is fixedly connected to the second housing (12); an impeller (31) is rotatably connected inside the second housing (12); a mounting plate (13) is fixedly connected to the rotating shaft of the impeller (31), and multiple push rods (14) arranged in a circumferential array are slidably connected to the mounting plate (13); an elastic band (15) is provided on the outside of the push rods (14); several sliders (16) are fixedly connected to the outer wall of the elastic band (15), and the sliders (16) are related to the impeller. The wheels (31) are arranged in a circular array and are all slidably connected to the housing (12); one of the sliders (16) is hinged to a connecting rod (17), and the end of the connecting rod (17) away from the slider (16) is hinged to an insert rod (18); the insert rod (18) is slidably connected to the housing (6); a number of insert blocks (19) arranged in a circular array are fixedly connected to the side wall of the turntable (7), the number of insert blocks (19) is equal to the number of filters (9), and they can be inserted into the insert rod (18).

2. The intensive wastewater deep treatment tank according to claim 1, characterized in that: A pipe (11) is fixedly connected inside the housing (6); the pipe (11) is perpendicular to the cavity (10) and is used to connect two filters (9) in a vertical state.

3. The intensive wastewater deep treatment tank according to claim 1, characterized in that: The insert (19) has a guide slope, and the insert rod (18) is tapered at one end near the insert (19).

4. The intensive wastewater deep treatment tank according to claim 1, characterized in that: The drive unit includes a sprocket (20); the sprocket (20) is fixedly mounted on the rotating shaft of the turntable (7) and is connected to a sprocket (21) via a chain; the sprocket (21) is connected to a motor (22).

5. The intensive wastewater deep treatment tank according to claim 1, characterized in that: A drain pipe (23) is detachably installed at the bottom of the housing (6), and the drain pipe (23) is connected to the slag discharge port (32); a cover plate (24) is hinged to the bottom end of the drain pipe (23); a cylinder (25) is fixedly connected to the drain pipe (23), and a piston (26) is slidably installed inside the cylinder (25); a drive mechanism for driving the piston (26) to reciprocate is provided on the side of the piston (26).

6. The intensive wastewater deep treatment tank according to claim 5, characterized in that: The driving mechanism includes a cam (28), which is located on the side of the piston (26) and is used to drive the piston (26) to move; a sprocket three (29) is fixedly connected to the rotating shaft of the cam (28), and the sprocket three (29) is connected to a sprocket four (30) through a chain two; the sprocket four (30) is fixedly installed on the rotating shaft of the impeller (31).

7. The intensive wastewater deep treatment tank according to claim 5, characterized in that: The cylinder (25) is arranged at an angle.

8. The intensive wastewater deep treatment tank according to claim 5, characterized in that: The drain pipe (23) is threadedly connected to the housing (6).

9. An intensive wastewater deep treatment process, applicable to the intensive wastewater deep treatment tank as described in claim 8, characterized in that, The process includes the following steps: Step 1: Inject the sewage inlet pipe (2) into the treatment tank (1). Under the action of the perforated rectifier plate (3), the water flow is evenly distributed in the entire vertical section of the treatment tank, and the water flow slowly from left to right. Step 2: The water overflowing from the outlet weir (4) after treatment flows into the outlet pipe (5) and enters the left cavity (8) through the left inlet end of the shell (6); Step 3: The filter (9) located in the left cavity (8) performs deep treatment on the water flow, intercepting tiny flocs and sludge particles in the water flow; Step 4: Then the purified water enters the second chamber (10) from the right end of the filter (9) on the left, and then enters the first chamber (8) on the right side through the filter (9) on the right side before being discharged.

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