Spraying device for sewage treatment

Abstract

The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to a spraying device for sewage treatment. The device comprises a first box body, a second box body is fixed to the top of the first box body, an adding mechanism is arranged at the top of the second box body, a partition plate is fixed in the first box body, a water spraying assembly is installed at the inner top of the first box body, and a first header pipe is arranged on the outer side of the first box body and connected and communicated with the first box body through a branch pipe; a drain pipe is mounted at the bottom of the first box body; valves are mounted on the branch pipe and the drain pipe. According to the design, sewage is injected into the area below the first box body from the first header pipe, and then a carbon source in the second box body is sprayed into the area below the first box body, so that the sewage is mixed with the carbon source when being injected, the carbon source and the sewage are mixed more quickly, and the carbon source and the sewage are further mixed when being discharged through the drainage pipe; the sewage is alternately injected into the first box body, so that the sewage and the carbon source can be continuously mixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment equipment, in particular to a spraying device for sewage treatment. Background Art

[0002] In order to alleviate and control the eutrophication of water bodies, the sewage discharge standards formulated by the state are becoming more and more stringent. However, most sewage treatments have the characteristics of low carbon and relatively high nitrogen and phosphorus. Due to the low content of organic matter, the conventional denitrification process cannot meet the demand for carbon sources in the anoxic denitrification stage, resulting in the obstruction of the denitrification process and the inhibition of the proliferation of anaerobic and aerobic bacteria, affecting the denitrification effect of sewage treatment. By adding an external carbon source to the anoxic zone, the denitrification rate can be increased by supplementing the carbon source.

[0003] The existing method is to add a suitable proportion of carbon source according to the amount of sewage flowing into the sewage pool. However, in actual use, since the sewage in the sewage pool is in a non-flowing state, after the carbon source is heated into the sewage, the carbon source needs to contact the sewage and diffuse slowly before it can be mixed with the sewage. Since the sewage is in a non-flowing state, the mixing time of the carbon source and sewage is relatively long, resulting in a long sewage treatment time, which affects the sewage treatment efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a spraying device for sewage treatment, which is convenient for mixing a carbon source and sewage.

[0005] The spraying device for sewage treatment comprises a first box body, a second box body is fixed on the top of the first box body, an adding mechanism for adding sewage treatment agent into the second box body is arranged on the top of the second box body, a partition is fixed horizontally in the first box body, the partition separates the first box body into two independent upper and lower areas, a water spraying assembly for spraying sewage treatment agent is installed on the inner top of the upper and lower areas of the first box body, a connecting assembly for injecting sewage treatment agent in the second box body into the water spraying assembly is arranged on the outer side of the second box body, a first main pipe is arranged on the outer side of the first box body, the first main pipe is connected to the upper and lower areas of the first box body respectively through branch pipes, a drainage pipe is installed on the bottom of the upper and lower areas of the first box body, and valves are installed on the branch pipe and the drainage pipe.

[0006] Furthermore, the branch pipe includes a second branch pipe and a first branch pipe, the first main pipe is connected to the top of the area above the first box body through the first branch pipe, and the first main pipe is connected to the top of the area below the first box body through the second branch pipe, and the first valve is installed on both the first branch pipe and the second branch pipe.

[0007] Furthermore, the drain pipe includes a first drain pipe and a second drain pipe, the first drain pipe is installed at the bottom of the side wall in the upper area of ​​the first box body, and the second drain pipe is installed at the bottom of the side wall in the lower area of ​​the first box body, and a second valve is installed on both the first drain pipe and the second drain pipe.

[0008] Furthermore, the diameters of the second branch pipe and the first branch pipe are consistent, the diameters of the first drain pipe and the second drain pipe are consistent, and the diameter of the second branch pipe is smaller than the diameter of the second drain pipe.

[0009] Furthermore, the adding mechanism includes a plurality of third boxes, each of which is connected to the second box via a connecting pipe, and each of the connecting pipes is provided with a third valve.

[0010] Furthermore, a feed port is provided on the top of the third box body, and a hole plug for sealing the feed port is provided corresponding to the feed port.

[0011] Furthermore, the connecting pipe is vertically located in the middle of the bottom of the third box body, and the inner bottom of the third box body is funnel-shaped.

[0012] Furthermore, the water spray assembly includes a horizontally arranged spray pipe, which is suspended at the inner top of the area below the first box body, and a plurality of nozzles for spraying water downwards are installed at the bottom of the spray pipe along its length direction.

[0013] Furthermore, the connection assembly includes a second main pipe, which is connected to the spray pipe through a secondary pipe, and a fourth valve is installed on the secondary pipe.

[0014] Furthermore, the top of the second main pipe is vertically located in the middle of the bottom of the second box body, and the inner bottom of the second box body is funnel-shaped.

[0015] Furthermore, liquid level measuring instruments for measuring liquid level are installed in both the upper and lower areas of the first box body, a controller is installed on the first box body, the first valve and the second valve are electrically controlled valves, the controller is electrically connected to the liquid level measuring instrument and the first valve and the second valve, and the controller is used to receive signals from the liquid level measuring instrument and control the first valve and the second valve respectively.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model adds the carbon source into the second box body, then injects the sewage from the first main pipe into the area below the first box body, and then sprays the carbon source in the second box body into the area below the first box body, so that the sewage can be mixed with the carbon source when entering, so that the carbon source and the sewage can be mixed faster, and the carbon source and the sewage can be further mixed when discharged through the drain pipe, and the sewage can be continuously mixed by alternately injecting the sewage into the upper and lower areas of the first box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the left view structure;

[0020] The names of the components in the figure are: 1, first box body 2, nozzle 3, spray pipe 4, partition 5, second branch pipe 6, first main pipe 7, first branch pipe 8, second box body 9, connecting pipe 10, third box body 11, hole plug 12, second main pipe 13, first drain pipe 14, second drain pipe 15, liquid level measuring instrument 16, first auxiliary pipe 17, second auxiliary pipe. DETAILED DESCRIPTION

[0021] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0022] A spraying device for sewage treatment described in this embodiment, such as Figure 1 and Figure 2 As shown, it includes a first box body 1, which is a rectangular structure and a closed box body. Of course, in actual use, rollers can be installed at the bottom of the first box body 1 to move the first box body 1. A second box body 8 is fixed on the top of the first box body 1, and support columns are vertically fixed at the four corners of the bottom of the second box body 8. The bottom end of the support column is fixed to the top of the first box body 1, so that there is a gap between the second box body 8 and the first box body 1, which is convenient for installing the second main pipe 12.

[0023] A plurality of third boxes 10 are arranged above the second box 8, and different carbon sources, such as inorganic carbon sources and organic carbon sources, can be added to the third boxes 10, such as ethanol, methanol and sodium acetate, etc., so that the carbon sources in the third boxes 10 can be added according to the different sewage columns. The third boxes 10 are connected to the second box 8 through the connecting pipe 9, and the connecting pipe 9 is installed with a third valve. By adding different carbon sources to different third boxes 10, different carbon sources can be selected according to different sewage. Of course, in actual use, an injection port can be directly opened on the top of the second box 8, and a plug is provided at the corresponding injection port to seal it, and the carbon source is manually added to the second box 8 through the injection port. This paragraph of text as a whole constitutes an adding mechanism for adding sewage treatment agent into the second box 8.

[0024] The top of the third box body 10 is provided with a feed port, and a hole plug 11 for sealing the feed port is provided corresponding to the feed port. The feed port is a threaded hole, and the hole plug 11 is threadedly matched with the feed port. Of course, the hole plug 11 can also be made of rubber. The hole plug 11 and the feed port have an interference fit, and the carbon source is added to the third box body 10 through the feed port. Of course, in actual use, the third box body 10 can also be a box body with a box cover.

[0025] The connecting pipe 9 is vertically located in the middle of the bottom of the third box body 10. A first through hole is provided on the top of the third box body 10 for inserting the top end of the connecting pipe 9. The top end of the connecting pipe 9 is fixed to the first through hole. A second through hole is provided on the top of the second box body 8 for inserting the bottom end of the connecting pipe 9. The bottom end of the connecting pipe 9 is fixed to the second through hole, so that the connecting pipe 9 connects the third box body 10 and the second box body 8. The inner bottom of the third box body 10 is funnel-shaped. The top of the connecting pipe 9 is connected to the funnel mouth at the bottom of the third box body 10, which can reduce the residual carbon source in the third box body 10 and make the emission cleaner.

[0026] A partition 4 is horizontally fixed in the first box body 1. The partition 4 is a rectangular plate. The partition 4 divides the first box body 1 into two upper and lower independent areas.

[0027] A spray pipe 3 is horizontally suspended at the inner top of the area below the first box 1. Both ends of the spray pipe 3 are sealed. The spray pipe 3 is suspended at the bottom of the partition 4 by a wire. Several nozzles 2 for spraying water downward are installed at the bottom of the spray pipe 3 along its length. There are multiple nozzles 2, which can make the spraying range relatively wide. The nozzle 2 is an atomizing nozzle. The spraying angle of the nozzle 2 is fixed. The spraying amount of the nozzle 2 is not large. When the nozzle 2 sprays, the carbon source is atomized and has more contact with the sewage. Of course, in actual use, the nozzle 2 can also be installed as one, so that the nozzle 2 is a nozzle that sprays downward and rotates, or the nozzle 2 is installed on the rear inner wall of the first box 1, so that the nozzle 2 sprays forward and downward; of course, the water spray assembly above the first box 1 is consistent with the water spray assembly below the first box 1. The spray pipe is suspended at the inner top of the first box 1. This paragraph of text as a whole constitutes a water spray assembly for spraying sewage treatment agents.

[0028] The second main pipe 12 is arranged outside the second box 8, and the second main pipe 12 is connected to the spray pipe 3 through the auxiliary pipe, and the fourth valve is installed on the auxiliary pipe. Of course, the second main pipe 12 is connected to the spray pipe in the upper area of ​​the first box 1 through the second auxiliary pipe 17, and the fifth valve is installed on the second auxiliary pipe 17, so that the second auxiliary pipe 17 and the first auxiliary pipe 16 share the second main pipe 12, which can reduce the use of materials. Of course, in actual use, the water spray assembly in the upper area of ​​the first box 1 can also be connected to the second box 8 through a pipeline alone. This paragraph of text as a whole constitutes a connection assembly for injecting the sewage treatment agent in the second box 8 into the water spray assembly, that is, injecting the sewage treatment agent in the second box 8 into the spray pipe 3.

[0029] The top of the second main pipe 12 is vertically located in the middle of the bottom of the second box body 8, the inner bottom of the second box body 8 is funnel-shaped, and the second main pipe 12 is a vertical "Z"-shaped structure as a whole. The second main pipe 12 includes two vertically arranged tubes and one horizontally arranged tube. The top vertically arranged tube is shorter than the bottom vertically arranged tube. The horizontally arranged tube connects the two vertically arranged tubes. The bottom vertically arranged tube is located on the side wall of the first box body 1. The first sub-pipe 16 and the second sub-pipe 17 are both connected to the bottom vertically arranged tube. The top vertically arranged tube is connected to the second box body 8. The inner bottom of the second box body 8 is funnel-shaped, which also reduces the residual carbon source in the second box body 8.

[0030] A first main pipe 6 is arranged outside the first box body 1, and the first main pipe 6 is connected to the upper and lower areas of the first box body 1 through branch pipes. Drain pipes are installed at the bottom of the upper and lower areas of the first box body 1, and valves are installed on the branch pipes and the drain pipes.

[0031] The branch pipes include a second branch pipe 5 and a first branch pipe 7. The first main pipe 6 is connected to the top of the area above the first box body 1 through the first branch pipe 7, and the first branch pipe 7 is connected to the top of the side wall of the area above the first box body 1. The first main pipe 6 is connected to the top of the area below the first box body 1 through the second branch pipe 5, and the second branch pipe 5 is connected to the top of the side wall of the area below the first box body 1. The first valve is installed on the first branch pipe 7 and the second branch pipe 5. The first valves on the second branch pipe 5 and the first branch pipe 7 can be used to control the different areas where sewage in the first main pipe 6 flows into. For example, opening the first valve on the second branch pipe 5 allows the sewage in the first main pipe 6 to flow into the area below the first box body 1, and opening the first valve on the first branch pipe 7 allows the sewage in the first main pipe 6 to flow into the area above the first box body 1.

[0032] The drain pipe includes a first drain pipe 13 and a second drain pipe 14. The first drain pipe 13 is installed at the bottom of the side wall of the upper area of ​​the first box body 1. The first drain pipe 13 is flush with the top of the partition 4. The second drain pipe 14 is installed at the bottom of the side wall of the lower area of ​​the first box body 1. The first drain pipe 13 and the second drain pipe 14 are both installed with a second valve. The sewage in the upper and lower areas of the first box body 1 can be discharged separately through the first drain pipe 13 and the second drain pipe 14. Of course, the first drain pipe 13 and the second drain pipe 14 can also be connected to a third main pipe, so that the sewage in the first drain pipe 13 and the second drain pipe 14 enters the third main pipe, and the flow direction of the sewage is controlled by the third main pipe, which can reduce the single length of the first drain pipe 13 and the second drain pipe 14.

[0033] The diameters of the second branch pipe 5 and the first branch pipe 7 are consistent, and the diameters of the first drain pipe 13 and the second drain pipe 14 are consistent. The diameter of the second branch pipe 5 is smaller than the diameter of the second drain pipe 14, so that the drainage of the first drain pipe 13 and the second drain pipe 14 is faster than the water inlet of the second branch pipe 5 and the first branch pipe 7, which can reduce the residual carbon source sewage added to the upper and lower areas of the first box body 1. For example, after the area below the first box body 1 is filled with sewage, when water is injected into the area above the first box body 1, the second valve on the second drain pipe 14 is opened. When the second drain pipe 14 discharges the sewage in the area below the first box body 1, the area above the first box body 1 is still not filled with sewage. In this way, when the area above the first box body 1 is filled with sewage, sewage is injected into the area below the first box body 1, and there is no residual sewage mixed with carbon sources in the area below the first box body 1, so that the alternating injection of sewage into the upper and lower areas of the first box body 1 will not be affected.

[0034] The first box body 1 is provided with a liquid level measuring instrument 15 for measuring the liquid level in both the upper and lower areas. The liquid level measuring instrument 15 is provided with the liquid level measuring instrument 15 in both the upper and lower areas of the first box body 1. The liquid level measuring instrument 15 is a known technology and can be an ultrasonic liquid level measuring instrument or a radar liquid level gauge. Both of them can prevent the liquid level measuring instrument 15 from contacting the sewage. By measuring the liquid level of the sewage, the amount of sewage in the upper and lower areas of the first box body 1 is measured. The first box body 1 is provided with a controller. The first valve and the second valve are electrically controlled valves. The controller is electrically connected to the liquid level measuring instrument 15 and the first valve and the second valve. The controller is used to receive the signal of the liquid level measuring instrument 15 and control the first valve and the second valve respectively. In actual use, During the process, automatic control can be achieved. For example, when the liquid level measuring instrument 15 below measures the amount of sewage in the area below the first box body 1, the first valve on the second branch pipe 5 is closed, the first valve on the first branch pipe 7 is opened, and then the second drain pipe 14 is opened; when the liquid level measuring instrument 15 above measures that the sewage in the area above the first box body 1 is full, the first valve on the first branch pipe 7 is closed, the first valve on the second branch pipe 5 is opened, and the second valve on the second drain pipe 14 is closed at the same time, and the second valve on the first drain pipe 13 is opened. Similarly, when the water in the first box body 1 below slows down, the controller only needs to change the state of the first valve of the second branch pipe 5 and the first branch pipe 7 and the second valve of the first drain pipe 13 and the second drain pipe 14.

[0035] Working principle:

[0036] When in use, when adding a sewage treatment agent carbon source to sewage, a suitable carbon source is added to the second box 8 according to the sewage to be treated, and then the sewage is transported to the first main pipe 6. For example, the sewage can be input into the first main pipe 6 by a pump, and the first main pipe 6 can also be connected to the drain pipe of the existing sewage pool, and the first valve on the second branch pipe 5 (or the first valve on the first branch pipe 7) is opened to allow the sewage to enter the area below the first box 1. At the same time, the sewage treatment agent carbon source in the second box 8 is transported to the spray pipe 3 through the second main pipe 12 and the first sub-pipe 16, and sprayed through the nozzle 2, which can increase the mixing area of ​​the carbon source and the sewage in the area below the first box 1. At the same time, water is injected and sprayed at the same time, so that the mixing effect of the sewage and the carbon source is better. When the area below the first box 1 is filled with sewage, the first valve on the second branch pipe 5 is closed. A valve is used to open the first valve on the first branch pipe 7 to allow the sewage to enter the area above the first box body 1. At the same time, the valve on the second drain pipe 14 is opened to inject the sewage with added carbon source in the area below the first box body 1 into the new sewage pool for treatment. When the sewage with added carbon source flows out from the second drain pipe 14, the sewage and the carbon source will be further mixed during the flow process, thereby increasing the mixing effect of the sewage and the carbon source. The size of the area below the first box body 1 is consistent, so it is only necessary to control the amount of carbon source in the second box body 8. When water is injected into the area above the first box body 1, the carbon source can be added to the second box body 8 again, which is also convenient for controlling the mixing ratio of the carbon source and sewage. The same is true for the area above the first box body 1. When the area above the first box body 1 is full, the sewage is injected into the area below the first box body 1 again.

Claims

1. A spraying device for sewage treatment, comprising a first housing (1), characterized in that: A second box (8) is fixed on the top of the first box (1), and an adding mechanism for adding sewage treatment agent into the second box (8) is arranged on the top of the second box (8). A partition (4) is horizontally fixed inside the first box (1), and the partition (4) divides the first box (1) into two upper and lower independent areas. A water spraying assembly for spraying sewage treatment agent is installed on the inner top of the upper and lower areas of the first box (1). A connecting assembly for injecting sewage treatment agent in the second box (8) into the water spraying assembly is arranged on the outer side of the second box (8). A first main pipe (6) is arranged on the outer side of the first box (1), and the first main pipe (6) is connected to the upper and lower areas of the first box (1) through branch pipes. Drain pipes are installed at the bottom of the upper and lower areas of the first box (1), and valves are installed on the branch pipes and the drain pipes.

2. The sewage treatment spraying device according to claim 1, characterized in that: The branch pipes include a second branch pipe (5) and a first branch pipe (7); the first main pipe (6) is connected to and communicates with the top of the area above the first box body (1) through the first branch pipe (7); the first main pipe (6) is connected to and communicates with the top of the area below the first box body (1) through the second branch pipe (5); and first valves are installed on both the first branch pipe (7) and the second branch pipe (5).

3. The sewage treatment spraying device according to claim 2, characterized in that: The drain pipe comprises a first drain pipe (13) and a second drain pipe (14); the first drain pipe (13) is installed at the bottom of the side wall of the upper area of ​​the first box body (1); the second drain pipe (14) is installed at the bottom of the side wall of the lower area of ​​the first box body (1); and second valves are installed on both the first drain pipe (13) and the second drain pipe (14).

4. The sewage treatment spraying device according to claim 3, characterized in that: The diameters of the second branch pipe (5) and the first branch pipe (7) are consistent, the diameters of the first drainage pipe (13) and the second drainage pipe (14) are consistent, and the diameter of the second branch pipe (5) is smaller than the diameter of the second drainage pipe (14).

5. The sewage treatment spraying device according to claim 4, characterized in that: The adding mechanism comprises a plurality of third boxes (10), each of the third boxes (10) being connected to the second box (8) via a connecting pipe (9), and each of the connecting pipes (9) is provided with a third valve.

6. The sewage treatment spraying device according to claim 5, characterized in that: The top of the third box body (10) is provided with a feed inlet, and a hole plug (11) is provided corresponding to the feed inlet to seal it.

7. The sewage treatment spraying device according to claim 6, characterized in that: The connecting pipe (9) is vertically located in the middle of the bottom of the third box body (10), and the inner bottom of the third box body (10) is funnel-shaped.

8. The sewage treatment spraying device according to claim 7, characterized in that: The water spray assembly comprises a horizontally arranged spray pipe (3), the spray pipe (3) being suspended at the inner top of the area below the first box body (1), and a plurality of spray heads (2) for spraying water downwards being installed at the bottom of the spray pipe (3) along its length direction.

9. The sewage treatment spraying device according to claim 8, characterized in that: The connection assembly comprises a second main pipe (12), the second main pipe (12) is connected to the spray pipe (3) through a secondary pipe, and a fourth valve is installed on the secondary pipe.

10. The sewage treatment spraying device according to claim 9, characterized in that: The top of the second main pipe (12) is vertically located in the middle of the bottom of the second box body (8), and the inner bottom of the second box body (8) is funnel-shaped.

11. The sewage treatment spraying device according to claim 10, characterized in that: A liquid level measuring instrument (15) for measuring the liquid level is installed in both the upper and lower areas of the first box (1), a controller is installed on the first box (1), the first valve and the second valve are electrically controlled valves, the controller is electrically connected to the liquid level measuring instrument (15) and the first valve and the second valve, and the controller is used to receive signals from the liquid level measuring instrument (15) and control the first valve and the second valve respectively.

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