Phosphorus removal agent dosing device

Abstract

The utility model relates to sewage treatment technical field more specifically, relate to a kind of phosphorus removal agent dosing device, it includes main pipeline and dosing pump, the dosing pump is arranged on the main pipeline, multiple dosing pipelines are equipped on the main pipeline, multiple dosing pipelines are equipped with multiple medicine outlet holes. The utility model overcomes the deficiency that phosphorus removal agent is not contacted sufficiently after being put in in prior art, leading to the need for more phosphorus removal agent consumption, the utility model is provided with multiple dosing pipelines and multiple medicine outlet holes are set on dosing pipeline, can improve the mixing uniformity of phosphorus removal agent and sewage, to improve the utilization rate and phosphorus removal efficiency of phosphorus removal agent, it is favorable to reduce the consumption of phosphorus removal agent.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field more particularly, relate to a phosphorus removal agent dosing device. BACKGROUND

[0002] Phosphorus removal agent is the most widely used water treatment agent in sewage treatment, which can achieve the purpose of deep phosphorus removal while coagulating and clarifying. The phosphorus removal agent dosing device is the most common agent dosing device in sewage treatment. In the secondary sewage treatment plant, the phosphorus removal agent is usually added directly through the dosing pipeline. For example, the prior art discloses a phosphorus removal agent dosing control system and method. The system comprises: a water inlet electromagnetic flowmeter and a water inlet online total phosphorus instrument, which are installed at the water inlet end of the dosing tank; a water outlet online total phosphorus instrument, which is installed at the water outlet end of the dosing tank; a phosphate online instrument, which is installed at the water outlet end or the water inlet end of the dosing tank; a phosphorus removal agent dosing pump, which is connected to the dosing tank through a dosing pipeline; a dosing flowmeter, which is arranged on the dosing pipeline; and a control device, which is electrically connected to the water inlet electromagnetic flowmeter, the water inlet online total phosphorus instrument, the phosphate online instrument, the water outlet online total phosphorus instrument, the dosing flowmeter and the phosphorus removal agent dosing pump. The control device can adjust the frequency of the dosing pump to add the phosphorus removal agent to the dosing tank according to the determined dosing amount.

[0003] In the above technical solution, the phosphorus removal agent is directly added to the biochemical tank through a pipeline. Since the phosphorus removal agent will concentrate in a small area after entering the biochemical tank, the local concentration of the phosphorus removal agent is too high, and the concentration of the phosphorus removal agent in the water far from this area is relatively low. In order to effectively remove the phosphorus in the biochemical tank, more phosphorus removal agent needs to be added, which results in a large amount of phosphorus removal agent consumption. UTILITY MODEL CONTENT

[0004] In view of the problem that the phosphorus removal agent does not contact with the sewage sufficiently after being added, resulting in a large amount of phosphorus removal agent consumption, the utility model provides a phosphorus removal agent dosing device, which can make the phosphorus removal agent contact with the sewage more sufficiently and reduce the consumption of the phosphorus removal agent.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is:

[0006] A phosphorus removal agent dosing device, comprising a main pipeline and a dosing pump, the dosing pump being arranged on the main pipeline, a plurality of dosing pipelines being arranged on the main pipeline, and a plurality of dosing holes being arranged on each dosing pipeline.

[0007] The above technical scheme, when in use, multiple medicine distribution pipelines are simultaneously inserted into the biochemical tank to contact with sewage, the dosing pump pumps the phosphorus removal agent to each medicine distribution pipeline, and then the phosphorus removal agent flows out to the biochemical tank through the medicine outlet holes on the medicine distribution pipelines. Since the medicine outlet holes are distributed at multiple positions in the biochemical tank, the surface area of the phosphorus removal agent contacting with the sewage can be increased, so that the phosphorus removal agent has a more sufficient reaction with the sewage in the biochemical tank. Moreover, the phosphorus removal agent injection mode of multiple medicine outlet holes has different disturbances to the sewage in the biochemical tank, which helps the phosphorus removal agent to better diffuse into the biochemical tank, so that the phosphorus removal agent can more efficiently contact and react with the phosphorus in the sewage. By setting multiple medicine distribution pipelines and multiple medicine outlet holes to inject the phosphorus removal agent, the utilization rate of the phosphorus removal agent can be improved, so that less phosphorus removal agent is needed to achieve the same phosphorus removal effect, thereby the consumption amount of the phosphorus removal agent can be reduced.

[0008] Preferably, a check element is arranged on each medicine outlet hole. The phosphorus removal agent in the medicine distribution pipeline can enter the biochemical tank through the check element, while the sewage in the biochemical tank cannot enter the medicine distribution pipeline through the check element. The check element can prevent the sewage in the biochemical tank from flowing back into the medicine distribution pipeline.

[0009] Preferably, a first branch pipeline is arranged on the main pipeline, the first branch pipeline is located between the dosing pump and the medicine distribution pipeline, and a gas supply assembly is connected to the inlet end of the first branch pipeline. The phosphorus removal agent has certain viscosity and crystallinity, which can form crystals in the main pipeline to affect the flow of the phosphorus removal agent. When the flow of the phosphorus removal agent in the main pipeline is slow, the dosing pump is first closed, and then the gas supply assembly is opened to supply high-pressure gas to the main pipeline through the second branch pipeline to flush the phosphorus removal agent crystals on the inner wall of the main pipeline. The gas supply assembly and the first branch pipeline can clean the main pipeline, so that the main pipeline is prevented from being blocked to cause pipeline rupture or leakage.

[0010] Preferably, the gas supply assembly can be a gas compressor, a gas storage tank, a pressure tank, etc.

[0011] Preferably, the gas supply assembly includes a pressure tank, the outlet end of the pressure tank is connected to the inlet end of the first branch pipeline, and an air inlet valve is arranged on the first branch pipeline. The pressure tank stores compressed air, and when the flow of the phosphorus removal agent in the main pipeline is slow, the air inlet valve is opened, so that the high-pressure gas in the pressure tank can flow into the main pipeline through the first branch pipeline. The pressure tank has a simple structure, is easy to maintain and maintain, and has high safety. Since the pressure tank is prior art, the structure and principle thereof will not be described in detail in the specification.

[0012] Preferably, the main pipeline is provided with a second branch pipeline, the second branch pipeline is located between the dosing pump and the distribution pipeline, and the second branch pipeline is provided with a water inlet pump and a water inlet valve. After high-pressure air flushing, some phosphorus removal agent crystals will still remain on the inner wall of the main pipeline. Therefore, after the air supply assembly flushes the main pipeline, the water inlet valve and the water inlet pump can be opened to flush the phosphorus removal agent crystals remaining on the inner wall of the main pipeline through the second branch pipeline, so as to completely remove the phosphorus removal agent crystals on the inner wall of the main pipeline.

[0013] Preferably, the main pipeline is provided with a pressure sensor, and the pressure sensor is located between the first branch pipeline and the second branch pipeline and the distribution pipeline. The pressure sensor can monitor the pressure change in the main pipeline. When the pressure measured by the pressure sensor reaches a certain threshold value, it indicates that the phosphorus removal agent in the main pipeline flows poorly. The pressure sensor can monitor the pressure in the main pipeline in real time, so that the main pipeline can be cleaned in time.

[0014] Preferably, the second branch pipeline is provided with a water stop valve, and the water stop valve is located between the water inlet pump and the main pipeline. The water stop valve can prevent the water in the second branch pipeline from flowing backward.

[0015] Preferably, the main pipeline is provided with a phosphorus removal agent check valve and a dosing valve, and the phosphorus removal agent check valve is located between the dosing pump and the distribution pipeline. The phosphorus removal agent check valve can prevent the phosphorus removal agent in the main pipeline from flowing backward. By adjusting the opening size of the dosing valve, the addition amount of the phosphorus removal agent can be accurately controlled, so as to ensure the phosphorus removal effect while avoiding waste of the phosphorus removal agent.

[0016] Preferably, the distribution pipeline is linearly distributed on one side of the main pipeline. Such a layout is more compact and facilitates the arrangement of the biochemical tank.

[0017] Preferably, at least part of the medicine outlet holes of the distribution pipeline are linearly distributed along the axis direction of the distribution pipeline. This can further improve the mixing uniformity of the phosphorus removal agent and the sewage, thereby further improving the phosphorus removal efficiency.

[0018] The utility model discloses the beneficial effects of:

[0019] 1. Multiple distribution pipelines are arranged, and multiple medicine outlet holes are arranged on the distribution pipelines. This can improve the mixing uniformity of the phosphorus removal agent and the sewage, thereby improving the utilization rate and the phosphorus removal efficiency of the phosphorus removal agent, and is beneficial to reducing the consumption of the phosphorus removal agent.

[0020] 2. Check elements are arranged on the medicine outlet holes. This can prevent the sewage from flowing backward into the distribution pipeline.

[0021] 3, set for gas components and water pump, can be in the main pipeline phosphorus removal agent flow slowly when the main pipeline for air and water, so that the main pipeline for thorough cleaning, prevent the main pipeline blockage. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a kind of phosphorus removal agent dosing device structure schematic view;

[0023] Figure 2 It is the structure schematic view of distribution pipeline;

[0024] Figure 3 It is the sectional view of one kind of check;

[0025] Figure 4 It is the positive schematic view of one kind of check;

[0026] Figure 5 It is the sectional view of another check.

[0027] In the drawings: 1-main pipeline;2-dosing pump;3-distribution pipeline;301-drug hole;4-check;401-conical part;402-port;5-first branch pipeline;6-dosing valve;7-pressure tank;8-air inlet valve;9-second branch pipeline;10-water pump;11-water inlet valve;12-pressure sensor;13-stop valve;14-drug check valve;15-PLC controller. DETAILED DESCRIPTION

[0028] The drawings are only used for example description, and can not be understood as the limitation of the patent;In order to better illustrate the embodiment, some components of the drawings can be omitted, enlarged or reduced, and the size of the actual product is not represented;For those skilled in the art, it can be understood that some well-known structures in the drawings and their description can be omitted.The position relationship described in the drawings is only used for example description, and can not be understood as the limitation of the patent.

[0029] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar parts;In the description of the utility model, it is understood that if the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "long" and "short" is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, the terms describing the positional relationship in the drawings are only used for example description, and can not be understood as the limitation of the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0030] The technical scheme of the utility model will be further described in detail by specific embodiments and in conjunction with the drawings:

[0031] Embodiment 1

[0032] The first embodiment of the phosphorus removal agent dosing device, in combination with Figure 1 and Figure 2 shown, comprising a main pipeline 1 and a dosing pump 2, the dosing pump 2 is arranged on the main pipeline 1, and a plurality of dosing pipelines 3 are arranged on the main pipeline 1, and a plurality of dosing holes 301 are arranged on each dosing pipeline 3.

[0033] The working principle or working process of the embodiment: when implemented, a plurality of dosing pipelines 3 are simultaneously inserted into the biochemical tank to contact with sewage, and the dosing pump 2 pumps the phosphorus removal agent to each dosing pipeline 3, and then the phosphorus removal agent flows out to the biochemical tank through the dosing holes 301 on the dosing pipeline 3. Since the dosing holes 301 are distributed at multiple positions in the biochemical tank, the surface area of the phosphorus removal agent in contact with the sewage can be increased, so that the phosphorus removal agent and the sewage in the biochemical tank can have a more sufficient reaction. Moreover, the injection mode of the multiple dosing holes 301 has different disturbances to the sewage in the biochemical tank, which helps the phosphorus removal agent to better diffuse into the biochemical tank, so that the phosphorus removal agent and the phosphorus in the sewage can be more efficiently contacted and reacted. By setting multiple dosing pipelines 3 and multiple dosing holes 301 to inject the phosphorus removal agent, the utilization rate of the phosphorus removal agent can be improved, so that less phosphorus removal agent is needed to achieve the same phosphorus removal effect, thereby reducing the consumption of the phosphorus removal agent.

[0034] The beneficial effects of the embodiment: setting multiple dosing pipelines and multiple dosing holes on the dosing pipelines can improve the mixing uniformity of the phosphorus removal agent and the sewage, thereby improving the utilization rate and the phosphorus removal efficiency of the phosphorus removal agent, and is beneficial to reducing the consumption of the phosphorus removal agent.

[0035] Embodiment 2

[0036] The second embodiment of the phosphorus removal agent dosing device, which is similar to Embodiment 1, the difference is that, as shown in Figure 1 , the multiple dosing pipelines 3 are linearly distributed on the bottom side of the main pipeline 1, which is more compact and facilitates the arrangement of the biochemical tank.

[0037] Further, among the dosing holes 301 on the dosing pipeline 3, a part is circumferentially distributed with the axis of the dosing pipeline 3 as the array axis, forming a circumference. There are multiple circumferences on the dosing pipeline 3, and these circumferences are linearly distributed along the axis direction of the dosing pipeline 3 on the dosing pipeline 3, which can further improve the mixing uniformity of the phosphorus removal agent and the sewage, thereby further improving the phosphorus removal efficiency.

[0038] Further, as shown in Figures 3 to 5 , a check element 4 is arranged on each dosing hole 301, wherein the check element 4 can be, for example, Figure 3 and Figure 4In the shown form, the check valve 4 is provided with a tapered portion 401, and the tapered portion 401 is provided with four through openings 402. The check valve 4 can also be as shown in Figure 5 In the shown form, the check valve 4 is provided with a tapered portion 401, and the tapered portion 401 is provided with four through openings 402. The check valve 4 can also be as shown in

[0039] Further, the main pipeline 1 is provided with a medicament check valve 14 and a dosing valve 6, and the medicament check valve 14 is located between the dosing pump 2 and the dosing pipeline 3. The medicament check valve 14 can prevent the backflow of the phosphorus removal agent in the main pipeline 1. The opening size of the dosing valve 6 can be adjusted to accurately control the addition amount of the phosphorus removal agent, so as to ensure the phosphorus removal effect while avoiding the waste of the phosphorus removal agent.

[0040] The other features, working principles and beneficial effects of the present embodiment are the same as those of the first embodiment.

[0041] Embodiment 3

[0042] The present embodiment is a third embodiment of a phosphorus removal agent dosing device, which is similar to the second embodiment, except that, as shown in Figure 1 As shown in the figure, the main pipeline 1 is provided with a first branch pipeline 5, and the first branch pipeline 5 is located between the dosing pump 2 and the dosing pipeline 3, and the first branch pipeline 5 is connected with a gas supply assembly at the inlet end. The phosphorus removal agent has certain viscosity and crystallinity, which can form crystals in the main pipeline 1 and affect the flow of the phosphorus removal agent. When the flow of the phosphorus removal agent in the main pipeline 1 is slow, the dosing pump 2 is closed first, and then the gas supply assembly is opened, and high-pressure gas is supplied to the main pipeline 1 through the second branch pipeline 9 to flush the phosphorus removal agent crystals on the inner wall of the main pipeline 1. The gas supply assembly and the first branch pipeline 5 can clean the main pipeline 1, so as to avoid the blockage of the main pipeline 1 and cause the pipeline to be broken or leaked.

[0043] Specifically, the gas supply assembly includes a pressure tank 7, and the outlet end of the pressure tank 7 is connected with the inlet end of the first branch pipeline 5; and the first branch pipeline 5 is provided with an air inlet valve 8. The pressure tank 7 stores compressed air, and when the flow of the phosphorus removal agent in the main pipeline 1 is slow, the air inlet valve 8 is opened, and the high-pressure gas in the pressure tank 7 can flow into the main pipeline 1 through the first branch pipeline 5. The structure of the pressure tank 7 is relatively simple, easy to maintain and maintain, and has high safety. Since the pressure tank 7 is prior art, the structure and principle thereof will not be described in detail in the present specification.

[0044] Further, the main pipeline 1 is provided with a second branch pipeline 9, the second branch pipeline 9 is located between the dosing pump 2 and the distribution pipeline 3, and the second branch pipeline 9 is provided with a water inlet pump 10 and a water inlet valve 11. After high-pressure air flushing, some phosphorus removal agent crystals will still be left on the inner wall of the main pipeline 1. Therefore, after the air supply assembly flushes the main pipeline 1, the water inlet valve 11 and the water inlet pump 10 can be opened, and clean water is transported to the main pipeline 1 through the second branch pipeline 9 to flush the phosphorus removal agent crystals left on the inner wall of the main pipeline 1, so that the phosphorus removal agent crystals on the inner wall of the main pipeline 1 are completely removed.

[0045] Further, the main pipeline 1 is provided with a second branch pipeline 9, the second branch pipeline 9 is located between the dosing pump 2 and the distribution pipeline 3, and the second branch pipeline 9 is provided with a water inlet pump 10 and a water inlet valve 11. After high-pressure air flushing, some phosphorus removal agent crystals will still be left on the inner wall of the main pipeline 1. Therefore, after the air supply assembly flushes the main pipeline 1, the water inlet valve 11 and the water inlet pump 10 can be opened, and clean water is transported to the main pipeline 1 through the second branch pipeline 9 to flush the phosphorus removal agent crystals left on the inner wall of the main pipeline 1, so that the phosphorus removal agent crystals on the inner wall of the main pipeline 1 are completely removed.

[0046] Further, the PLC controller 15 is further included, the air inlet valve 8, the water inlet valve 11 and the pressure sensor 12 are electrically connected with the PLC controller 15. The pressure sensor 12 sends the measured pressure value to the PLC controller 15 in real time, and when the pressure value reaches a certain threshold value, the PLC controller 15 controls the air inlet valve 8 to be opened first, then controls the air inlet valve 8 to be closed after air flushing of the main pipeline 1, and then controls the water inlet valve 11 to be opened.

[0047] Further, the second branch pipeline 9 is provided with a water stop valve 13, and the water stop valve 13 is located between the water inlet pump 10 and the main pipeline 1. The water stop valve 13 can prevent the water in the second branch pipeline 9 from flowing back.

[0048] The other features, working principles and beneficial effects of the embodiment are consistent with those of the embodiment 2.

[0049] In the specific contents of the above specific embodiments, any non-contradictory combination of technical features can be combined, and in order to make the description simple, all possible combinations of the above technical features are not described, but as long as the combination of these technical features does not exist, it should be considered as the scope of the present application.

[0050] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A phosphorus removal agent dosing device comprising a main pipe (1) and a dosing pump (2), the dosing pump (2) being provided on the main pipe (1), characterized in that, The main pipeline (1) is provided with a plurality of medicine distribution pipelines (3), and each of the medicine distribution pipelines (3) is provided with a plurality of medicine outlet holes (301).

2. The phosphorus removal agent dosing device according to claim 1, characterized in that, Each of the medicine outlet holes (301) is provided with a check element (4).

3. The phosphorus removal agent dosing device according to claim 1, characterized in that, The main pipeline (1) is provided with a first branch pipeline (5), the first branch pipeline (5) is located between the medicine adding pump (2) and the medicine distribution pipeline (3), and the inlet end of the first branch pipeline (5) is connected with a gas supply assembly.

4. The phosphorus removal agent dosing device according to claim 3, characterized in that, The gas supply assembly comprises a pressure tank (7), the outlet end of the pressure tank (7) is connected with the inlet end of the first branch pipeline (5), and the first branch pipeline (5) is provided with an air inlet valve (8).

5. The phosphorus removal agent dosing device according to claim 3, characterized in that, The main pipeline (1) is provided with a second branch pipeline (9), the second branch pipeline (9) is located between the medicine adding pump (2) and the medicine distribution pipeline (3), and the second branch pipeline (9) is provided with a water inlet pump (10) and a water inlet valve (11).

6. The phosphorus removal agent dosing device according to claim 5, characterized in that, The main pipeline (1) is provided with a pressure sensor (12), and the pressure sensor (12) is located between the first branch pipeline (5) and the second branch pipeline (9) and the medicine distribution pipeline (3).

7. The phosphorus removal agent dosing device according to claim 5, characterized in that, The second branch pipeline (9) is provided with a water stop valve (13), and the water stop valve (13) is located between the water inlet pump (10) and the main pipeline (1).

8. The phosphorus removal agent dosing device according to claim 1, characterized in that, The main pipeline (1) is provided with a medicine check valve (14) and a medicine adding valve (6), and the medicine check valve (14) is located between the medicine adding pump (2) and the medicine distribution pipeline (3).

9. The phosphorus removal agent dosing device according to any one of claims 1 to 8, characterized in that, The medicine distribution pipelines (3) are linearly distributed on one side of the main pipeline (1).

10. The phosphorus removal agent dosing device according to claim 9, characterized in that, At least part of the medicine outlet holes (301) on the medicine distribution pipelines (3) are linearly distributed along the axis direction of the medicine distribution pipelines (3).

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