Industrial wastewater denitrification and phosphorus removal treatment tower

Abstract

The utility model discloses an industrial sewage denitrification and dephosphorization treatment tower, include: support frame, the support frame from top to bottom has flocculation pool, denitrification pool, dephosphorization pool in proper order, the top of flocculation pool is provided with sewage inlet pipe, the side top of flocculation pool with the top between denitrification pool is passed through first communication pipe intercommunication, the side bottom of denitrification pool far from first communication pipe one side with the top between dephosphorization pool is passed through second communication pipe intercommunication, the utility model discloses flocculation pool, denitrification pool, dephosphorization pool in vertical direction in proper order arrange on the ground area of denitrification and dephosphorization equipment of support frame, greatly reduce investment cost, through setting up flocculation pool in front of denitrification pool, carry out the pretreatment in advance to sewage, separate the macroparticle such as suspended solid, colloidal substance etc in sewage.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment tower technology, specifically to an industrial wastewater denitrification and phosphorus removal treatment tower. Background Technology

[0002] The denitrification and phosphorus removal process for industrial wastewater needs to be designed based on the form (e.g., ammonia nitrogen, nitrate nitrogen, organic nitrogen; orthophosphate, organic phosphorus, etc.), concentration, and discharge standards of nitrogen and phosphorus in the wastewater, combined with the water quality characteristics (e.g., carbon-to-nitrogen ratio, pH value, water temperature, etc.). It typically involves an anoxic stage and an aerobic stage, with the anoxic stage corresponding to denitrification and the aerobic stage to phosphorus removal. However, existing technologies require the removal of large particles such as suspended solids and colloidal substances in the raw wastewater to avoid excessive impurities. This necessitates pretreatment of the raw water before denitrification and phosphorus removal, requiring sedimentation tanks for flocculation and sedimentation. This results in excessively large wastewater treatment equipment that occupies significant land, leading to high costs for factories treating their own wastewater and significantly impacting profitability. Therefore, this paper proposes a small-scale industrial wastewater denitrification and phosphorus removal treatment tower that requires a small footprint and low cost. Utility Model Content

[0003] The purpose of this invention is to provide an industrial wastewater denitrification and phosphorus removal treatment tower to address the aforementioned shortcomings in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an industrial wastewater denitrification and phosphorus removal treatment tower, comprising: a support frame, on which a flocculation tank, a denitrification tank, and a phosphorus removal tank are arranged sequentially from top to bottom; a wastewater inlet pipe is arranged on the top of the flocculation tank; the top side of the flocculation tank is connected to the top of the denitrification tank through a first connecting pipe; and the bottom side of the denitrification tank away from the first connecting pipe is connected to the top of the phosphorus removal tank through a second connecting pipe.

[0005] A partition is fixedly connected inside the flocculation tank. One end of the sewage inlet pipe is inserted into the flocculation tank and is located within the area enclosed by the partition and the inner wall of the flocculation tank. A first vertical mixer is installed next to the end of the sewage inlet pipe inserted into the flocculation tank. A sedimentation pipe with its bottom extending into the bottom of the flocculation tank is installed inside the flocculation tank. A water pipe is installed between the partition and the sedimentation pipe. A first auger conveyor is installed at the bottom of the flocculation tank.

[0006] Furthermore, a folding plate is fixedly connected to the flocculation tank on the side of the first vertical mixer away from the sewage inlet pipe. The folding plate is separated from the first vertical mixer by a first vertical plate fixedly connected to the flocculation tank, and a water passage is left at the bottom of the first vertical plate.

[0007] Furthermore, a first packing layer is provided on the outside of the sedimentation tube. One side of the first packing layer is fixedly connected to the partition plate, and the other three sides are fixedly connected to the inner wall of the flocculation tank.

[0008] Furthermore, a second vertical mixer is installed in the denitrification tank next to the first connecting pipe.

[0009] Furthermore, a second vertical plate is fixedly connected inside the phosphorus removal tank, and an aerator and a second packing layer are respectively installed on the left and right sides of the second vertical plate. The aerator is located between the second connecting pipe and the sedimentation pipe.

[0010] Furthermore, an outlet pipe is provided on the side of the phosphorus removal tank away from the second connecting pipe, and the outlet pipe is connected to the phosphorus removal tank above the second packing layer. A second screw conveyor is provided at the bottom of the phosphorus removal tank.

[0011] Furthermore, the top of the flocculation tank is provided with a flocculant injection port.

[0012] Furthermore, a ladder is fixedly connected to the side of the support frame.

[0013] The beneficial effects of the industrial wastewater denitrification and phosphorus removal treatment tower provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model significantly reduces the footprint of the denitrification and phosphorus removal equipment by arranging the flocculation tank, denitrification tank, and phosphorus removal tank sequentially on the support frame in the vertical direction.

[0015] 2. By setting up a flocculation tank in front of the denitrification tank, the sewage is pretreated in advance to separate large particles such as suspended solids and colloidal substances in the sewage.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0017] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A first-view structural schematic diagram provided for an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the second-view structure provided for an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the flocculation tank provided in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the denitrification tank provided in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the phosphorus removal tank provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Support frame; 2. Flocculation tank; 21. First vertical mixer; 22. Baffle plate; 23. First vertical plate; 24. Water pipe; 25. Sedimentation pipe; 26. First packing layer; 27. First screw conveyor; 28. Flocculant injection port; 29. ​​Baffle plate; 3. Denitrification tank; 31. Second vertical mixer; 4. Phosphorus removal tank; 41. Aerator; 42. Second packing layer; 43. Second screw conveyor; 44. Water outlet pipe; 45. Second vertical plate; 5. Ladder; 6. Sewage inlet pipe; 7. First connecting pipe; 8. Second connecting pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0027] Please see Figures 1-5An industrial wastewater denitrification and phosphorus removal treatment tower includes: a support frame 1, on which a flocculation tank 2, a denitrification tank 3, and a phosphorus removal tank 4 are arranged sequentially from top to bottom; a wastewater inlet pipe 6 is arranged at the top of the flocculation tank 2; the top side of the flocculation tank 2 is connected to the top of the denitrification tank 3 via a first connecting pipe 7; the bottom side of the denitrification tank 3 away from the first connecting pipe 7 is connected to the top of the phosphorus removal tank 4 via a second connecting pipe 8; a partition 22 is fixedly connected inside the flocculation tank 2; one end of the wastewater inlet pipe 6 is inserted into the flocculation tank 2 within the area enclosed by the partition 22 and the inner wall of the flocculation tank 2; and a first vertical mixer 21 is arranged next to the end of the wastewater inlet pipe 6 inserted into the flocculation tank 2. The first vertical mixer 21 is a vertical mixer with a motor arranged at the top of the flocculation tank 2 and its agitator located inside the flocculation tank 2; a sedimentation pipe 25 is arranged inside the flocculation tank 2 with its bottom extending into the bottom of the inner cavity of the flocculation tank 2; and the partition... A water pipe 24 is provided between the sedimentation pipe 22 and the sedimentation pipe 25. A first screw conveyor 27 is provided at the bottom of the flocculation tank 2. When the first screw conveyor 27 is not in use, the discharge port is sealed with a sealing cover. When sludge needs to be discharged, the sealing cover is opened and the first screw conveyor 27 is started so that the first screw conveyor 27 discharges the sludge settled at the bottom of the flocculation tank 2. When sewage is discharged, the discharge port is sealed with a sealing cover. A folding plate 29 is provided on the side of the first vertical mixer 21 away from the sewage inlet pipe 6 and is fixedly connected to the flocculation tank 2. The folding plate 29 and the first vertical mixer 21 are separated by a first vertical plate 23 fixedly connected to the flocculation tank 2, and a water passage is left at the bottom of the first vertical plate 23. A first packing layer 26 is provided on the outside of the sedimentation pipe 25. One side of the first packing layer 26 is fixedly connected to the partition plate 22, and the other three sides are fixedly connected to the inner wall of the flocculation tank 2.

[0028] Specifically, raw sewage enters the flocculation tank 2 through the sewage inlet pipe 6. It is stirred by the first vertical mixer 21 to accelerate the mixing efficiency of flocculant and raw sewage. Subsequently, the sewage enters the space between the first vertical plate 23 and the partition plate 22 through the bottom of the first vertical plate 23. The baffle plate 29 extends the water flow path and the flocculation time of suspended solids, thus promoting the flocculation effect. Then, the sewage is guided to the bottom of the flocculation tank 2 through the sedimentation pipe 25. The sewage then rises from the bottom, passes through the first packing layer 26, and flows out through the first connecting pipe 7. The function of the first packing layer 26 is also to extend the water flow path, thereby promoting the flocculation of suspended solids.

[0029] Furthermore, a second vertical mixer 31 is installed in the denitrification tank 3 next to the first connecting pipe 7.

[0030] Specifically, the second vertical mixer 31 includes a drive motor and a stirring paddle. The drive motor is installed on the top of the denitrification tank 3, and the stirring paddle is located inside the denitrification tank 3 to stir the raw water, making the microorganisms in the raw water more evenly distributed. When it is necessary to increase the denitrification speed, microorganisms can be added from the outside. The denitrification microorganisms are denitrifying bacteria, which use the organic matter in the sewage to reduce nitrates and nitrites into nitrogen gas, thereby achieving the purpose of denitrification. The generated nitrogen gas enters the phosphorus removal tank 4 from the second connecting pipe 8 and is discharged from the exhaust hole at the top of the phosphorus removal tank 4. The top of the phosphorus removal tank 4 is provided with an exhaust hole.

[0031] Furthermore, a second vertical plate 45 is fixedly connected inside the phosphorus removal tank 4. An aerator 41 and a second packing layer 42 are respectively installed on the left and right sides of the second vertical plate 45. The aerator 41 is located between the second connecting pipe 8 and the sedimentation pipe 25. The aerator 41 injects oxygen into the phosphorus removal tank 4, providing sufficient oxygen for the phosphorus removal tank 4. The aerobic microorganisms live in a suitable environment and multiply in large quantities, further decomposing the organic matter in the sewage into carbon dioxide and water, while absorbing phosphorus in the sewage, thereby promoting the phosphorus removal effect.

[0032] Furthermore, a water outlet pipe 44 is provided on the side of the phosphorus removal tank 4 away from the second connecting pipe 8. The water outlet pipe 44 is connected to the phosphorus removal tank 4 above the second packing layer 42. A second screw conveyor 43 is provided at the bottom of the phosphorus removal tank 4. When the second screw conveyor 43 is not in use, the outlet is sealed with a sealing cover. When sludge needs to be discharged, the sealing cover is opened and the second screw conveyor 43 is started, so that the second screw conveyor 43 discharges the sludge settled at the bottom of the phosphorus removal tank 4. When sewage is discharged, the outlet is sealed with a sealing cover. The second packing layer 42 extends the sewage propulsion path, thereby extending the sedimentation time of suspended solids and promoting the sedimentation effect.

[0033] Furthermore, the top of the flocculation tank 2 is provided with a flocculant injection port 28, which is a flocculant injection port.

[0034] Furthermore, a ladder 5 is fixedly connected to the side of the support frame 1. The ladder 5 is a maintenance ladder, which facilitates the maintenance of the equipment by the staff.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An industrial wastewater denitrification and phosphorus removal treatment tower, comprising: The support frame (1) is characterized in that: a flocculation tank (2), a denitrification tank (3) and a phosphorus removal tank (4) are arranged sequentially from top to bottom on the support frame (1), a sewage inlet pipe (6) is arranged on the top of the flocculation tank (2), the top of the side of the flocculation tank (2) is connected to the top of the denitrification tank (3) through a first connecting pipe (7), and the bottom of the side of the denitrification tank (3) away from the first connecting pipe (7) is connected to the top of the phosphorus removal tank (4) through a second connecting pipe (8). A partition (22) is fixedly connected inside the flocculation tank (2). One end of the sewage inlet pipe (6) inserted into the flocculation tank (2) is located within the area enclosed by the partition (22) and the inner wall of the flocculation tank (2). A first vertical mixer (21) is provided next to the end of the sewage inlet pipe (6) inserted into the flocculation tank (2). A sedimentation pipe (25) with its bottom extending into the bottom of the flocculation tank (2) is provided inside the flocculation tank (2). A water pipe (24) is provided between the partition (22) and the sedimentation pipe (25). A first auger conveyor (27) is provided at the bottom of the flocculation tank (2).

2. The industrial wastewater denitrification and phosphorus removal treatment tower according to claim 1, characterized in that, The first vertical mixer (21) is provided with a folding plate (29) fixedly connected to the flocculation tank (2) on the side away from the sewage inlet pipe (6). The folding plate (29) and the first vertical mixer (21) are separated by a first vertical plate (23) fixedly connected to the flocculation tank (2), and a water passage is left at the bottom of the first vertical plate (23).

3. The industrial wastewater denitrification and phosphorus removal treatment tower according to claim 2, characterized in that, The sedimentation tube (25) is provided with a first packing layer (26) on the outside. One side of the first packing layer (26) is fixedly connected to the partition plate (22), and the other three sides are fixedly connected to the inner wall of the flocculation tank (2).

4. The industrial wastewater denitrification and phosphorus removal treatment tower according to claim 1, characterized in that, A second vertical mixer (31) is installed in the denitrification tank (3) next to the first connecting pipe (7).

5. The industrial wastewater denitrification and phosphorus removal treatment tower according to claim 1, characterized in that, The phosphorus removal tank (4) is fixedly connected to a second vertical plate (45). An aerator (41) and a second packing layer (42) are respectively installed on the left and right sides of the second vertical plate (45). The aerator (41) is located between the second connecting pipe (8) and the sedimentation pipe (25).

6. The industrial wastewater denitrification and phosphorus removal treatment tower according to claim 5, characterized in that, The phosphorus removal tank (4) is provided with an outlet pipe (44) on the side away from the second connecting pipe (8). The outlet pipe (44) is connected to the phosphorus removal tank (4) above the second packing layer (42). The bottom of the phosphorus removal tank (4) is provided with a second screw conveyor (43).

7. The industrial wastewater denitrification and phosphorus removal treatment tower according to claim 1, characterized in that, The top of the flocculation tank (2) is provided with a flocculant injection port (28).

8. The industrial wastewater denitrification and phosphorus removal treatment tower according to claim 1, characterized in that, A ladder (5) is fixedly connected to the side of the support frame (1).

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