Phosphorus removal agent distribution device for sewage treatment plant

Abstract

The utility model discloses a dephosphorization agent distribution device for a sewage treatment plant, which comprises a support frame and a distribution box body arranged on the support frame, the top surface of the distribution box body is opened, and a cover body is arranged on the top surface of the distribution box body; a steady flow plate and an overflow plate are arranged in the distribution box body, and the steady flow plate and the overflow plate are arranged in parallel at an interval so as to divide the distribution box body into a medicine inlet cavity, a steady flow cavity and a distribution cavity; a medicine inlet is formed in one side wall, corresponding to the medicine inlet cavity, of the distribution box body; a plurality of flow stabilizing holes are uniformly distributed in the lower part of the flow stabilizing plate; a plurality of partition plates are arranged in the distribution cavity, all the partition plates are arranged in parallel at intervals and are perpendicular to the overflow plate so as to divide the distribution cavity into a plurality of distribution grooves, meanwhile, a plurality of V-shaped overflow grooves are formed in the overflow plate, the number of the V-shaped overflow grooves corresponding to the distribution grooves is equal, and a medicine outlet is formed in the position, corresponding to the bottom of each distribution groove, of the bottom of the distribution box body. According to the dephosphorization device, the dephosphorization agent can be uniformly distributed, a good dephosphorization effect can be obtained under the condition that the dosage is small, and the equipment investment is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, relates to dephosphorization agent distribution, and specifically relates to a dephosphorization agent distribution device for a sewage treatment plant. Background Art

[0002] Phosphorus is one of the key factors causing eutrophication of water bodies. Reducing phosphorus discharge in urban sewage treatment has become a key link in controlling eutrophication of water bodies.

[0003] There are two main methods of phosphorus removal in sewage treatment plants: biological phosphorus removal and chemical phosphorus removal. Biological phosphorus removal is to convert dissolved phosphorus into granular polyphosphate through the action of microorganisms, and then remove phosphorus through sludge discharge; chemical phosphorus removal is to add phosphorus removal agents to sewage to make the dissolved phosphorus in the water react with the phosphorus removal agents to form insoluble phosphate precipitates, and then remove phosphorus from sewage through solid-liquid separation. Common phosphorus removal agents include polyferric chloride, ferrous sulfate, polyaluminium chloride, etc. At present, most sewage treatment plants use chemical phosphorus removal to remove phosphorus.

[0004] Traditional chemical phosphorus removal is to add the phosphorus removal agent directly to the sedimentation tank through a diaphragm pump. Generally, there are multiple sedimentation tanks in a sewage treatment plant and the water inlet flow rate of each sedimentation tank is fixed. A diaphragm pump is only used to add the phosphorus removal agent to one or two sedimentation tanks. This not only requires high equipment investment, but also cannot ensure that the amount of phosphorus removal agent added to each sedimentation tank is equal, so that some sedimentation tanks have too much phosphorus removal agent added, resulting in waste of phosphorus removal agent and increased operating costs; some sedimentation tanks have less phosphorus removal agent added, and the phosphorus removal effect cannot be achieved. Based on this, how to evenly distribute the phosphorus removal agent to ensure a better phosphorus removal effect at a smaller dosage and reduce equipment investment is a technical problem that technicians in this field hope to solve. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a dephosphorization agent distribution device for a sewage treatment plant. The present invention can evenly distribute the dephosphorization agent to ensure good dephosphorization effect at a relatively small dosage and reduce equipment investment.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A dephosphorization agent distribution device for a sewage treatment plant comprises a support frame and a distribution box arranged on the support frame. The top surface of the distribution box is open and a cover is provided on the top surface of the distribution box to close the top surface of the distribution box.

[0008] A flow stabilizing plate and an overflow plate are arranged in the distribution box, and the flow stabilizing plate and the overflow plate are arranged at intervals and in parallel to divide the distribution box into a medicine inlet chamber, a flow stabilizing chamber and a distribution chamber; a medicine inlet port is arranged on one side wall of the distribution box corresponding to the medicine inlet chamber, which is used to connect the medicine inlet pipe to introduce the dephosphorization agent into the medicine inlet chamber, and a number of flow stabilizing holes are evenly distributed on the lower part of the flow stabilizing plate, so that the dephosphorization agent in the medicine inlet chamber can smoothly enter the flow stabilizing chamber, so that the liquid level in the flow stabilizing chamber is stable; a number of partitions are arranged in the distribution chamber, and all the partitions are arranged in parallel and at intervals and are perpendicular to the overflow plate. The three side edges of the partition are respectively connected with the overflow plate, the bottom and the inner wall of the distribution box to divide the distribution chamber into a plurality of distribution slots. The distribution slots correspond to the sedimentation tanks to be added one by one. At the same time, overflow V-shaped grooves are provided on the overflow plate. The number of overflow V-shaped grooves corresponding to each distribution slot is equal, so that the dephosphorization agent in the steady flow chamber can enter the distribution slot through the overflow V-shaped grooves at an equal flow rate. The bottom of the distribution box corresponding to the bottom of each distribution slot is provided with a drug outlet for connecting a drug outlet pipe to add the dephosphorization agent in the distribution slot into the sedimentation tank.

[0009] Furthermore, the side wall of the distribution box where the medicine inlet is located is parallel to the flow stabilizing plate.

[0010] Furthermore, the flow stabilizing plate is detachably arranged in the distribution box.

[0011] Furthermore, inner walls of the distribution box corresponding to the two ends of the flow stabilizing plate are provided with slots corresponding to the flow stabilizing plate, and the two ends of the flow stabilizing plate are clamped in the corresponding slots, thereby realizing detachable installation of the flow stabilizing plate.

[0012] Furthermore, a waste liquid outlet is provided at the bottom of the distribution box corresponding to the medicine inlet cavity.

[0013] Furthermore, the bottom of the distribution box corresponding to each distribution trough is concave downward and has a certain taper, and the drug outlet is arranged at the bottom of the cone, so that the dephosphorizing agent in the distribution trough can enter the sedimentation tank through the drug outlet pipe.

[0014] Furthermore, the support frame includes four vertically arranged columns, and the four columns are respectively located at the four vertices of the rectangle. A rectangular frame composed of a number of horizontally arranged cross bars is provided at the top of the four columns. The distribution box is placed on the rectangular frame, and a connecting rod is horizontally provided between two adjacent columns. At the same time, a connecting plate is horizontally provided at the bottom of each column, so that the connecting plate can be connected to the horizontal base surface through a fixing part, thereby fixing the column on the horizontal base surface.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The distribution box of the utility model comprises a medicine feeding chamber, a flow stabilization chamber and a distribution chamber. The distribution chamber is divided into distribution slots corresponding to the sedimentation tanks to be dosed by partitions. After the dephosphorization agent enters the medicine feeding chamber, the flow stabilization holes arranged at the bottom of the flow stabilization plate are relatively small, so turbulence can be eliminated. After the dephosphorization agent in the medicine feeding chamber enters the flow stabilization chamber, the liquid level in the flow stabilization chamber is stable. Then the dephosphorization agent in the flow stabilization chamber enters the distribution slot by overflow. In this way, the flow rate of the dephosphorization agent entering the distribution slot can be stable and equal, thereby ensuring that the dephosphorization agent is evenly distributed, which is beneficial to ensure that all sedimentation tanks obtain good dephosphorization effects at a relatively small dosage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 -Structural schematic diagram of the utility model.

[0018] Figure 2 -Top view of the distribution box.

[0019] Figure 3-Figure 2 AA cross-section diagram.

[0020] Figure 4-Figure 2 BB cross-section diagram.

[0021] Among them: 1-support frame; 11-column; 12-cross bar; 13-connecting rod; 14-connecting plate; 2-distribution box; 21-drug inlet; 22-flow stabilizing plate; 23-card slot; 24-overflow plate; 25-drug outlet; 26-partition; 27-waste liquid outlet; 3-cover body. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A dephosphorization agent distribution device for a sewage treatment plant includes a support frame 1 and a distribution box 2 arranged on the support frame 1. The top surface of the distribution box 2 is open, and a cover 3 is provided on the top surface of the distribution box 2 to close the top surface of the distribution box 2.

[0024] A flow stabilizing plate 22 and an overflow plate 24 are provided in the distribution box 2, and the flow stabilizing plate 22 and the overflow plate 24 are arranged at intervals and in parallel, so as to divide the distribution box 2 into a medicine feeding chamber, a flow stabilizing chamber and a distribution chamber; a medicine feeding port 21 is provided on one side wall of the distribution box corresponding to the medicine feeding chamber, which is used to connect the medicine feeding pipe to introduce the dephosphorization agent into the medicine feeding chamber, and a plurality of small flow stabilizing holes are evenly distributed on the lower part of the flow stabilizing plate 22, so that the dephosphorization agent in the medicine feeding chamber can smoothly enter the flow stabilizing chamber, so that the liquid level in the flow stabilizing chamber is stable; a plurality of baffles 26 are provided in the distribution chamber, and all baffles 26 are arranged in parallel and at intervals and are evenly distributed. Perpendicular to the overflow plate 24, the three side edges of the partition 26 are respectively connected to the overflow plate 24, the bottom and the inner wall of the distribution box 2 to divide the distribution chamber into a plurality of distribution slots, and the distribution slots correspond one to one to the sedimentation tank to be added. At the same time, an overflow V-shaped groove is provided on the overflow plate 24, and the number of overflow V-shaped grooves corresponding to each distribution slot is equal, so that the dephosphorization agent in the steady flow chamber can enter the distribution slot through the overflow V-shaped groove with equal flow rate. The bottom of the distribution box corresponding to the bottom of each distribution slot is provided with a drug outlet 25 for connecting a drug outlet pipe to add the dephosphorization agent in the distribution slot into the sedimentation tank.

[0025] In this way, after the dephosphorization agent enters the medicine inlet chamber from the medicine inlet, the turbulence can be eliminated because the stabilizing hole arranged at the bottom of the flow stabilizing plate is relatively small, so that after the dephosphorization agent in the medicine inlet chamber enters the flow stabilizing chamber, the liquid level in the flow stabilizing chamber is stable, and then the dephosphorization agent in the flow stabilizing chamber enters the distribution groove by overflow, so that the dephosphorization dosage flow entering the distribution groove can be guaranteed to be stable and equal, thereby ensuring that the dephosphorization agent is evenly distributed, and then enters the sedimentation tank from the medicine outlet for dephosphorization.

[0026] There is no limitation on the shape of the flow-stabilizing hole, which may be a circular hole, a polygonal hole, etc., as long as turbulence can be eliminated. Of course, a circular hole is preferred.

[0027] In specific applications, if there are 5 sedimentation tanks, then the distribution device can be provided with 5 distribution slots accordingly; if there are 8 sedimentation tanks, then the distribution device can be provided with 8 distribution slots, or two distribution devices can be provided, each with 4 distribution slots. Figure 4It can be seen that in this embodiment, there are five distribution grooves, which can supply dephosphorization agent to five sedimentation tanks with equal flow rates. Each distribution groove corresponds to an overflow V-shaped groove. In practical applications, each distribution groove can correspond to two or more overflow V-shaped grooves, as long as the number of overflow V-shaped grooves corresponding to each distribution groove is equal, it is ensured that the dephosphorization agent entering the distribution groove is evenly distributed. The notch angle of the overflow V-shaped groove in this embodiment is 60°. At the same time, it can be found that only one diaphragm pump is needed to pump the dephosphorization agent into the distribution box, that is, one diaphragm pump can realize the addition of dephosphorization agent for five sedimentation tanks. Compared with the prior art, the equipment investment of diaphragm pumps can be effectively reduced. For example, if there are 10 sedimentation tanks, each diaphragm pump provides dephosphorization agent to two sedimentation tanks, then 5 diaphragm pumps are needed. To ensure normal operation, at least 6 diaphragm pumps are needed, that is, five for use and one for backup. By using the distribution device in this embodiment, one diaphragm pump can provide dephosphorization agent for five sedimentation tanks, so two diaphragm pumps are needed. In the case of one for use and one for backup, only four diaphragm pumps are needed, which effectively reduces the equipment investment of diaphragm pumps.

[0028] During specific implementation, the side wall of the distribution box 2 where the medicine inlet 21 is located is parallel to the flow stabilizing plate 22 .

[0029] In specific implementation, the flow stabilizer 22 is detachably arranged in the distribution box 2. Specifically, the inner wall of the distribution box 2 corresponding to the two ends of the flow stabilizer is provided with a slot 23 corresponding to the flow stabilizer 22, and the two ends of the flow stabilizer 22 are clamped in the corresponding slot 23, so as to realize the detachable installation of the flow stabilizer 22. In this way, it is convenient to remove the flow stabilizer for cleaning and maintenance.

[0030] In specific implementation, the bottom of the distribution box 2 corresponding to the medicine inlet cavity is provided with a waste liquid port 27. When the distribution box needs to be cleaned and maintained, the flow stabilizing plate is first removed, and then the residual liquid in the distribution box (medicine inlet cavity and flow stabilizing cavity) is drained through the waste liquid port.

[0031] In specific implementation, the bottom of the distribution box 2 corresponding to each distribution slot is concave downward and has a certain taper, and the drug outlet 25 is arranged at the bottom of the cone to facilitate the phosphorus removal agent in the distribution slot to smoothly enter the drug outlet pipe.

[0032] In specific implementation, the support frame 1 includes four vertically arranged columns 11, and the four columns 11 are respectively located at the four vertices of a rectangle. A rectangular frame composed of a number of horizontally arranged cross bars 12 is provided at the top of the four columns 11. The distribution box 2 is placed on the rectangular frame, and a connecting rod 13 is horizontally provided between two adjacent columns 11. At the same time, a connecting plate 14 is horizontally provided at the bottom of each column 11, so that the connecting plate 11 can be connected to the cement base surface by screws, thereby fixing the support frame 1 on the cement base surface.

[0033] The distribution box is placed on the rectangular frame, which supports the distribution box. To ensure the stability of the distribution box, fixed plates can be set around the distribution box, and the fixed plates and the rectangular frame are fixed by bolts, so that the distribution box is fixed on the support frame; limit baffles can also be set around the rectangular frame to limit the distribution box. The connecting plate is set on the inner side of the rectangle surrounded by four columns, which reduces the footprint of the device and is conducive to improving safety.

[0034] When the dispensing device of the utility model is used, in order to further improve safety, a safety plate can be wrapped around the supporting frame corresponding to the aisle side.

[0035] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A phosphorus removal agent distribution device for a sewage treatment plant, characterized in that: It comprises a support frame and a distribution box body arranged on the support frame, wherein the top surface of the distribution box body is open, and a cover body is arranged on the top surface of the distribution box body to close the top surface of the distribution box body; A flow stabilizing plate and an overflow plate are arranged in the distribution box, and the flow stabilizing plate and the overflow plate are arranged at intervals and in parallel, so as to divide the distribution box into a medicine inlet chamber, a flow stabilizing chamber and a distribution chamber; a medicine inlet port is arranged on one side wall of the distribution box corresponding to the medicine inlet chamber, which is used to connect the medicine inlet pipe to introduce the dephosphorization agent into the medicine inlet chamber, and a plurality of flow stabilizing holes are evenly distributed on the lower part of the flow stabilizing plate, so that the dephosphorization agent in the medicine inlet chamber can smoothly enter the flow stabilizing chamber, so that the liquid level in the flow stabilizing chamber is stable; a plurality of partitions are arranged in the distribution chamber, and all the partitions are arranged in parallel and at intervals and perpendicular to the overflow plate The three side edges of the partition are respectively connected to the overflow plate, the bottom and the inner wall of the distribution box to divide the distribution chamber into a plurality of distribution slots. The distribution slots correspond one to one to the sedimentation tank to be added. At the same time, a plurality of overflow V-shaped grooves are arranged on the overflow plate. The number of overflow V-shaped grooves corresponding to each distribution slot is equal, so that the dephosphorization agent in the steady flow chamber can enter the distribution slot through the overflow V-shaped grooves at an equal flow rate. The bottom of the distribution box corresponding to the bottom of each distribution slot is provided with a drug outlet, which is used to connect the drug outlet pipe to add the dephosphorization agent in the distribution slot to the sedimentation tank.

2. A dephosphorization agent distribution device for a sewage treatment plant according to claim 1, characterized in that: The side wall of the distribution box where the medicine inlet is located is parallel to the flow stabilizing plate.

3. A dephosphorization agent distribution device for a sewage treatment plant according to claim 1 or 2, characterized in that: The flow stabilizing plate is detachably arranged in the distribution box.

4. A dephosphorization agent distribution device for a sewage treatment plant according to claim 3, characterized in that: The inner wall of the distribution box corresponding to the two ends of the flow stabilizing plate is provided with a card slot corresponding to the flow stabilizing plate, and the two ends of the flow stabilizing plate are clamped in the corresponding card slot, so as to realize the detachable installation of the flow stabilizing plate.

5. A dephosphorization agent distribution device for a sewage treatment plant according to claim 4, characterized in that: A waste liquid outlet is arranged at the bottom of the distribution box corresponding to the medicine inlet cavity.

6. A dephosphorization agent distribution device for a sewage treatment plant according to claim 1, characterized in that: The bottom of the distribution box corresponding to each distribution trough is concave downward and has a certain taper, and the drug outlet is arranged at the bottom of the cone, so that the dephosphorizing agent in the distribution trough can enter the sedimentation tank through the drug outlet pipe.

7. A dephosphorization agent distribution device for a sewage treatment plant according to claim 1, characterized in that: The support frame includes four vertically arranged columns, and the four columns are respectively located at the four vertices of a rectangle. A rectangular frame composed of a number of horizontally arranged cross bars is arranged on the top of the four columns. The distribution box is placed on the rectangular frame, and a connecting rod is horizontally arranged between two adjacent columns. At the same time, a connecting plate is horizontally arranged at the bottom of each column, so that the connecting plate can be connected to the horizontal base surface through a fixing piece, thereby fixing the support frame on the horizontal base surface.

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