A sewage treatment device containing a flocculant

Abstract

The utility model relates to the technical field of sewage treatment especially is a kind of sewage treatment device containing flocculating agent, including frame, install water treatment tank on frame, and the water treatment tank upper portion intercommunication clean water pipe and install separation mechanism in water treatment tank upper and located clean water pipe below, the separation mechanism includes with the fixed connection of water treatment tank mounting seat, rotates and installs hollow shaft on mounting seat, provides power for the separation motor of hollow shaft rotation, fixedly installs sieve cylinder on the top of separation motor and fixedly installs water collecting tank on mounting seat and located sieve cylinder below, the inside of hollow shaft is interconnected with the inside of sieve cylinder, the sieve cylinder is trumpet mouth shape, the sieve cylinder inner bottom wall and hollow shaft junction higher than sieve cylinder bottom all around, the water collecting tank is equipped with the drain pipe that is interconnected with water collecting tank inside. It can reduce the flocculating body content in clean water of external discharge, and effectively reduce the water content in flocculating body after separation.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment, and in particular to a wastewater treatment device containing flocculants. Background Technology

[0002] Polyaluminum chloride-based flocculants, through their rich content of highly positively charged polynuclear polymers, first neutralize the colloidal charge to destabilize it, then utilize their polymer chains for adsorption and bridging, and finally aggregate micron- and nano-sized suspended and colloidal pollutants in water into millimeter-sized flocs through the net-like sweeping of hydroxide precipitation. They are commonly used water treatment agents in wastewater treatment.

[0003] For example, utility model patent application CN223118224U discloses a wastewater treatment device based on an adsorption-type flocculant, comprising: a wastewater treatment tank, a ball valve connected to the lower surface of the wastewater treatment tank, a geared motor fixedly installed at one end of the wastewater treatment tank, and a spiral pusher disc fixedly installed inside the wastewater treatment tank with drainage holes on its surface. This device can pour an appropriate amount of polyaluminum chloride-based flocculant into the wastewater treatment tank according to the water level, avoiding waste of reagents or insufficient addition leading to unsatisfactory treatment results. However, some suspended flocs still exist in the discharged purified water, and the separation effect between purified water and flocs needs further improvement. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a wastewater treatment device containing flocculants that reduces the content of flocs in discharged purified water and effectively reduces the water content in the separated flocs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wastewater treatment device containing flocculant, comprising a frame, a water treatment tank mounted on the frame, a purified water pipe communicating with the upper part of the water treatment tank, and a separation mechanism mounted on the water treatment tank and located below the purified water pipe. The separation mechanism includes a mounting base fixedly connected to the water treatment tank, a hollow shaft rotatably mounted on the mounting base, a separation motor providing power for the rotation of the hollow shaft, a screen cylinder fixedly mounted on the top of the separation motor, and a water collection tank fixedly mounted on the mounting base and located below the screen cylinder. The interior of the hollow shaft communicates with the interior of the screen cylinder, the screen cylinder is funnel-shaped, the connection between the inner bottom wall of the screen cylinder and the hollow shaft is higher than the bottom perimeter of the screen cylinder, and a drain pipe communicating with the interior of the water collection tank is provided at the water collection tank.

[0006] Furthermore, the central axis of the hollow shaft coincides with the central axis of the screen cylinder; the large-diameter end of the screen cylinder faces upward, the outlet end of the water purification pipe is projected onto the upper part of the inner wall of the screen cylinder, and the inner wall of the screen cylinder is truncated conical to reduce the amount of water discharged through the hollow shaft.

[0007] The screen cylinder is provided with multiple evenly distributed screen holes, the aperture of which allows water to pass through and can filter and retain flocs; the separation motor is connected to the hollow shaft drive via a chain or the like.

[0008] Preferably, the water treatment tank is equipped with a scraper that extends into the screen cylinder, and the scraper fits into the bottom wall and side wall of the screen cylinder.

[0009] Preferably, the outer wall of the screen cylinder is covered with a baffle, and a cavity is formed between the baffle and the screen cylinder. The bottom of the baffle is provided with a drain hole that communicates with the inside of the cavity. Further, the drain holes are evenly distributed around the center of the baffle.

[0010] Preferably, a water collection tank is installed at the bottom of the frame, and a filter press mechanism is installed at the top of the water collection tank.

[0011] Preferably, the filter press mechanism includes rotating rollers rotatably mounted on both sides of the upper part of the water collection tank, a filter press belt sleeved on both ends of the rotating rollers, an inner support frame fixedly mounted on the frame, and multiple pressure rollers rotatably mounted on the bottom of the water treatment tank. The water collection tank is equipped with a filter press motor that provides power for the rotation of one of the rotating rollers. The inner support frame is located inside the filter press belt, and the pressure rollers press the filter press belt onto the inner support frame. The hollow shaft is projected onto the feeding end of the filter press belt. The filter press belt has its own filter holes, which allow water to pass through and can retain solid particles after the flocs are dewatered.

[0012] Preferably, the water treatment tank is provided with a slag discharge pipe that communicates with the bottom of the water treatment tank. The slag discharge pipe is located above the feeding side of the filter press belt, and the inner bottom wall of the water treatment tank gradually slopes towards the slag discharge pipe.

[0013] Furthermore, a switch valve is installed on the slag discharge pipe, and the slag discharge pipe is lower than the inner bottom wall of the water treatment tank away from the slag discharge pipe; preferably, there are two sets of separation mechanisms, which are located on both sides above the slag discharge pipe, or there may be multiple sets of separation mechanisms to improve the uniformity of the distribution of solids falling onto the filter press belt.

[0014] Preferably, the water treatment tank is provided with a partition plate, which divides the water treatment tank into a drug dissolving chamber and a flocculation chamber, and the partition plate is provided with an opening connecting the drug dissolving chamber and the flocculation chamber.

[0015] Preferably, a stirrer is installed in the water treatment tank, extending into the dissolving chamber and the flocculation chamber; further, the stirrer is driven by a motor.

[0016] Preferably, it also includes a drug storage tank and a spiral auger, wherein the feeding end of the spiral auger is connected to the bottom of the drug storage tank, and the discharging end of the spiral auger extends into the drug dissolving chamber.

[0017] Compared with the prior art, this utility model provides a wastewater treatment device containing flocculants, which has the following beneficial effects: This wastewater treatment device containing flocculants causes a physicochemical reaction between wastewater and polyaluminum chloride-based flocculants in a water treatment tank, causing the colloids in the wastewater to form flocs. The flocs settle to the bottom of the water treatment tank under gravity, while the upper layer of purified liquid flows into the screen cylinder through the purified water pipe. The separation motor drives the screen cylinder to rotate, and under the action of centrifugal force, the purified water is thrown outward and falls into the water collection tank and is discharged through the drain pipe. The suspended flocs mixed in the purified water remain in the screen cylinder, thereby reducing the floc content in the discharged purified water and effectively reducing the water content in the separated flocs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the front planar structure of this utility model.

[0020] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0021] Figure 4 This is the utility model Figure 3 Schematic diagram of the cross-sectional structure at point BB.

[0022] Figure 5 This is the utility model Figure 3 A magnified schematic diagram of the structure at point C.

[0023] Figure 6 This is the utility model Figure 4 A magnified schematic diagram of the structure at point D.

[0024] The following components are labeled in the attached diagram: 1. Frame; 2. Water treatment tank; 3. Clean water pipe; 4. Mounting base; 5. Hollow shaft; 6. Separator motor; 7. Screen cylinder; 8. Water collection tank; 9. Drain pipe; 10. Scraper; 11. Baffle; 12. Drain hole; 13. Water collection tank; 14. Rotary roller; 15. Filter press belt; 16. Internal support frame; 17. Pressure roller; 18. Filter press motor; 19. Slag discharge pipe; 20. Partition plate; 21. Dissolving chamber; 22. Flocculation chamber; 23. Outlet; 24. Agitator; 25. Storage tank; 26. Screw conveyor. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1 Please refer to Figures 1-6 A wastewater treatment device containing flocculant includes a frame 1, a water treatment tank 2 mounted on the frame 1, a purified water pipe 3 communicating with the upper part of the water treatment tank 2, and a separation mechanism mounted on the water treatment tank 2 and located below the purified water pipe 3. The separation mechanism includes a mounting base 4 fixedly connected to the water treatment tank 2, a hollow shaft 5 rotatably mounted on the mounting base 4, a separation motor 6 providing power for the rotation of the hollow shaft 5, a screen cylinder 7 fixedly mounted on the top of the separation motor 6, and a water collection tank 8 fixedly mounted on the mounting base 4 and located below the screen cylinder 7. The interior of the hollow shaft 5 communicates with the interior of the screen cylinder 7, the screen cylinder 7 is funnel-shaped, and the connection between the inner bottom wall of the screen cylinder 7 and the hollow shaft 5 is higher than the bottom perimeter of the screen cylinder 7. A drain pipe 9 communicating with the interior of the water collection tank 8 is provided at the water collection tank 8. Furthermore, the central axis of the hollow shaft 5 coincides with the central axis of the screen cylinder 7; the large-diameter end of the screen cylinder 7 faces upward, and the outlet end of the water purification pipe 3 is projected onto the upper part of the inner wall of the screen cylinder 7. The inner wall of the screen cylinder 7 is conical to reduce the amount of water discharged through the hollow shaft 5; the screen cylinder 7 is provided with multiple evenly distributed screen holes, the aperture of which allows water to pass through and can filter and retain flocs; the separation motor 6 is connected to the hollow shaft 5 via a chain or the like for transmission.

[0029] The water treatment tank 2 is equipped with a partition plate 20, which divides the water treatment tank 2 into a dissolving chamber 21 and a flocculation chamber 22. The partition plate 20 is provided with an opening 23 that connects the dissolving chamber 21 and the flocculation chamber 22.

[0030] A stirrer 24 is installed at the water treatment tank 2, extending into the dissolving chamber 21 and the flocculation chamber 22; furthermore, the stirrer 24 is driven by a motor; the rotation speed of the stirrer 24 in the flocculation chamber 22 should be less than 15 r / min.

[0031] It also includes a drug storage tank 25 and a spiral auger 26. The feeding end of the spiral auger 26 is connected to the bottom of the drug storage tank 25, and the discharge end of the spiral auger 26 extends into the drug dissolving chamber 21.

[0032] Please refer to Figure 5 and Figure 6 A scraper 10 is installed on the water treatment tank 2, extending into the screen cylinder 7. The scraper 10 fits into the bottom wall and side wall of the screen cylinder 7. The outer wall of the screen cylinder 7 is covered with a baffle 11, forming a collection cavity between the baffle 11 and the screen cylinder 7. The bottom of the baffle 11 is provided with a drain hole 12 that communicates with the inside of the collection cavity. Furthermore, the drain holes 12 are evenly distributed around the center of the baffle 11.

[0033] The wastewater treatment device containing flocculant provided in this embodiment can store powdered or granular polyaluminum chloride-based flocculant in a storage tank 25. The flocculant is then transported from the storage tank 25 to the dissolving chamber 21 via a screw conveyor 26. The agitator 24 in the dissolving chamber 21 is activated to accelerate the dissolution of the polyaluminum chloride-based flocculant in the wastewater. The wastewater after flocculant addition enters the flocculation chamber 22 through the inlet 23. The agitator 24 in the flocculation chamber 22 slowly agitates the wastewater. The agitator 24 causes a slow swirling flow within the flocculation chamber 22, which promotes the aggregation and sedimentation of the flocs within the flocculation chamber 22, thus preventing the flocs from being broken by the agitator 24. During the rotation of the screen cylinder 7, the scraper 10 can scrape off the solid flocs trapped on the inner wall of the screen cylinder 7, and the scraped solids can fall outward through the hollow shaft 5. The baffle 11 can prevent water droplets from splashing outward during the centrifugal rotation of the screen cylinder 7, so that the separated clean water accumulates in the collection chamber and falls into the water collection tank 8 through the drain hole 12.

[0034] Example 2 The wastewater treatment device containing flocculant provided in Example 1 has been further optimized. For details, please refer to [link / reference needed]. Figures 1-4 A water collection tank 13 is installed at the bottom of the frame 1, and a filter press mechanism is installed at the top of the water collection tank 13. The filter press mechanism includes rotating rollers 14 rotatably mounted on both sides of the upper part of the water collection tank 13, a filter press belt 15 with both ends sleeved on the rotating rollers 14, an inner support frame 16 fixedly mounted on the frame 1, and multiple pressure rollers 17 rotatably mounted at the bottom of the water treatment tank 2. A filter press motor 18 is installed on the water collection tank 13 to provide power for the rotation of one of the rotating rollers 14. The inner support frame 16 is located inside the filter press belt 15, and the pressure rollers 17 press the filter press belt 15 onto the inner support frame 16. The hollow shaft 5 is projected onto the feeding end of the filter press belt 15. The filter press belt 15 has filter holes that allow water to pass through and can trap solid particles after the flocculants are dewatered. The inner support frame 16 gradually tilts upward near the feeding end of the filter press belt 15, and an open cavity can be formed between the filter press belt 15 and the inner wall of the water collection tank 13.

[0035] For details, please refer to Figure 2 or Figure 4The water treatment tank 2 is equipped with a slag discharge pipe 19 that communicates with the bottom of the water treatment tank 2. The slag discharge pipe 19 is located above the feeding side of the filter press belt 15, and the inner bottom wall of the water treatment tank 2 gradually slopes towards the slag discharge pipe 19. Furthermore, a switch valve is installed on the slag discharge pipe 19, and the slag discharge pipe 19 is lower than the inner bottom wall of the water treatment tank 2 away from the slag discharge pipe 19. Preferably, there are two sets of separation mechanisms, which are located on both sides above the slag discharge pipe 19. Multiple sets of separation mechanisms can also be used to improve the uniformity of the distribution of solids falling onto the filter press belt 15.

[0036] In the wastewater treatment device containing flocculants provided in this embodiment, solid residue falling from the middle of the hollow shaft 5 falls to the feeding end of the filter press belt 15. The filter press motor 18 drives the rotating roller 14 to rotate, and the filter press belt 15 rotates with the rotating roller 14. The solid residue falling onto the filter press belt 15 is squeezed again when it passes through the pressure roller 17. The water in the solid residue drips into the water collection tank 13 through the filter press belt 15, performing secondary dewatering treatment on the solid residue and further reducing the water content in the solid residue. The water content; when the amount of flocculated material settled in the flocculation chamber 22 reaches a certain level, the switch valve at the slag discharge pipe 19 is opened, and some of the sewage and flocculated material in the flocculation chamber 22 falls to the feeding end of the filter press belt 15. The water passes through the filter press belt 15 and falls into the water collection tank 13, while the flocculated material remains at the filter press belt 15. During the movement of the filter press belt 15, the flocculated material is sent to the bottom of the pressure roller 17. The flocculated material is dehydrated under the action of extrusion pressure, thus realizing the dehydration treatment of the settled flocculated material.

[0037] The wastewater treatment device containing flocculant provided by this utility model operates as follows: Polyaluminum chloride-based flocculant is stored in a storage tank 25. The flocculant is then transported from the storage tank 25 to the dissolving chamber 21 via a screw conveyor 26. The stirrer 24 in the dissolving chamber 21 is activated, dissolving the flocculant. Wastewater with added flocculant enters the flocculation chamber 22 through the inlet 23 for flocculation and sedimentation. The upper layer of purified water in the flocculation chamber 22 flows into the separation mechanism through the purified water pipe 3. The separation motor 6 drives the screen cylinder 7 to rotate. Under centrifugal force, the purified water is thrown outwards and blocked by the baffle 11. The purified water is then drained. The water falls through hole 12 into water collection tank 8 and is discharged through drain pipe 9, while the flocculent residue remains on the inner wall of screen cylinder 7. Scraper 10 scrapes the flocculent residue into hollow shaft 5 and onto the feeding end of filter press belt 15. The flocculent discharged from slag discharge pipe 19 can also fall onto filter press belt 15. Water falls through the filter holes on filter press belt 15 into water collection tank 13, while the flocculent solid residue remains on filter press belt 15. Filter press motor 18 drives roller 14 to rotate, and filter press belt 15 transports flocculent residue to below pressure roller 17. Under the squeezing action, the flocculent residue is dehydrated again, thus removing water from the flocculent.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A wastewater treatment device containing a flocculant, characterized in that, The device includes a frame (1), a water treatment tank (2) mounted on the frame (1), a clean water pipe (3) connected to the upper part of the water treatment tank (2), and a separation mechanism mounted on the water treatment tank (2) and located below the clean water pipe (3). The separation mechanism includes a mounting base (4) fixedly connected to the water treatment tank (2), a hollow shaft (5) rotatably mounted on the mounting base (4), a separation motor (6) that provides power for the rotation of the hollow shaft (5), a screen cylinder (7) fixedly mounted on the top of the separation motor (6), and a water collection tank (8) fixedly mounted on the mounting base (4) and located below the screen cylinder (7). The interior of the hollow shaft (5) is connected to the interior of the screen cylinder (7). The screen cylinder (7) is funnel-shaped. The connection between the inner bottom wall of the screen cylinder (7) and the hollow shaft (5) is higher than the bottom periphery of the screen cylinder (7). A drain pipe (9) connected to the interior of the water collection tank (8) is provided at the water collection tank (8).

2. The wastewater treatment device containing flocculant according to claim 1, characterized in that, The water treatment tank (2) is equipped with a scraper (10) that extends into the screen cylinder (7), and the scraper (10) fits into the bottom wall and side wall of the screen cylinder (7).

3. The wastewater treatment device containing flocculant according to claim 1, characterized in that, The outer wall of the screen cylinder (7) is covered with a baffle (11), and a collection cavity is formed between the baffle (11) and the screen cylinder (7). The bottom of the baffle (11) is provided with a drain hole (12) that communicates with the inside of the collection cavity.

4. The wastewater treatment device containing flocculant according to claim 1 or 3, characterized in that, A water collection tank (13) is installed at the bottom of the frame (1), and a filter press mechanism is installed at the top of the water collection tank (13).

5. The wastewater treatment device containing flocculant according to claim 4, characterized in that, The filter press mechanism includes rotating rollers (14) rotatably mounted on both sides of the upper part of the water collection tank (13), filter press belts (15) with both ends sleeved on the rotating rollers (14), an inner support frame (16) fixedly mounted on the frame (1), and multiple pressure rollers (17) rotatably mounted on the bottom of the water treatment tank (2). The water collection tank (13) is equipped with a filter press motor (18) that provides power for the rotation of one of the rotating rollers (14). The inner support frame (16) is located inside the filter press belt (15). The pressure rollers (17) press the filter press belt (15) onto the inner support frame (16). The hollow shaft (5) is projected onto the feeding end of the filter press belt (15).

6. The wastewater treatment device containing flocculant according to claim 5, characterized in that, The water treatment tank (2) is provided with a slag discharge pipe (19) that communicates with the bottom of the water treatment tank (2). The slag discharge pipe (19) is located above the feeding side of the filter press belt (15). The inner bottom wall of the water treatment tank (2) gradually slopes toward the slag discharge pipe (19).

7. The wastewater treatment device containing flocculant according to claim 1, characterized in that, The water treatment tank (2) is provided with a partition plate (20), which divides the water treatment tank (2) into a dissolving chamber (21) and a flocculation chamber (22). The partition plate (20) is provided with an opening (23) connecting the dissolving chamber (21) and the flocculation chamber (22).

8. The wastewater treatment device containing flocculant according to claim 7, characterized in that, A stirrer (24) is installed in the water treatment tank (2) and extends into the dissolving chamber (21) and the flocculation chamber (22).

9. The wastewater treatment device containing flocculant according to claim 7, characterized in that, It also includes a medicine storage tank (25) and a spiral auger (26), the feeding end of the spiral auger (26) is connected to the bottom of the medicine storage tank (25), and the discharge end of the spiral auger (26) extends into the dissolving chamber (21).

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