Nitrogen-containing wastewater denitrification system

Abstract

The utility model relates to a nitrogen-containing wastewater denitrification system, which belongs to the technical field of wastewater treatment, has a relatively simple and practical overall structure, can improve the removal effect on pollutants, especially nitrogen pollutants, is relatively easy to operate, can intercept activated sludge, can effectively reduce sludge load, improves the removal rate of organic nitrogen compounds, and is suitable for industrial production. The device comprises a physicochemical treatment tank, a sludge treatment tank and a sludge treatment tank, a partition plate is arranged in the electrolytic tank and is used for dividing the electrolytic tank into an anode chamber and a cathode chamber; an aeration device main body is arranged at one end of the multifunctional tank, and an aeration head of the aeration device main body is arranged in the multifunctional tank; a biological denitrification system is arranged in the two-stage A / O tank; an activated carbon filter plate is arranged in the multi-medium filter tank, and one end of the multi-medium filter tank is communicated with a water drain pipe with a regulating valve; and a plurality of communicating pipes.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a nitrogen removal system for nitrogen-containing wastewater. Background Technology

[0002] As we all know, excessive nitrogen content in water bodies can easily lead to eutrophication, which causes very serious damage to the ecological environment. Denitrification is a necessary step in purifying wastewater. The traditional treatment technology for nitrogen-containing organic wastewater involves denitrification through aerobic nitrification and anoxic denitrification biochemical processes.

[0003] Currently, the applicant has found that, based on the above-mentioned traditional treatment technologies, the total nitrogen in the final effluent is generally difficult to meet the existing discharge requirements, and can sometimes reach more than 100 mg / L. For some difficult-to-treat low carbon-to-nitrogen ratio organic wastewater, the total nitrogen in the effluent can even reach more than 300 mg / L. It can be seen that the traditional treatment technologies are difficult to meet the discharge requirements, and the wastewater must be subjected to deep denitrification treatment.

[0004] Therefore, in response to the aforementioned technologies, it is necessary to propose a nitrogen removal system for nitrogen-containing wastewater to better address the aforementioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a nitrogen removal system for nitrogen-containing wastewater to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A nitrogen-containing wastewater denitrification system, comprising:

[0008] Physicochemical treatment tank;

[0009] An electrolytic cell, wherein a partition is provided inside the electrolytic cell to divide the electrolytic cell into an anode chamber and a cathode chamber;

[0010] A multi-functional pool, wherein an aeration device body is provided at one end of the multi-functional pool, and the aeration head of the aeration device body is located inside the multi-functional pool;

[0011] A two-stage A / O tank, wherein a biological denitrification system is installed in the two-stage A / O tank;

[0012] A multi-media filter tank, wherein an activated carbon filter plate is installed inside the multi-media filter tank, and one end of the multi-media filter tank is connected to a drain pipe with a regulating valve.

[0013] Multiple connecting pipes are arranged between the physicochemical treatment tank, the electrolysis tank, the multifunctional tank, the two-stage A / O tank, and the multi-media filtration tank.

[0014] Multiple sets of support components are provided at the bottom of the physicochemical treatment tank, electrolysis tank, multifunctional tank, two-stage A / O tank, and multi-media filtration tank, and are used to support the physicochemical treatment tank, electrolysis tank, multifunctional tank, two-stage A / O tank, and multi-media filtration tank in their usage positions.

[0015] As a further improvement of this utility model: the support component includes four pillars, each of which is correspondingly disposed at the bottom of the base, and the other end of each pillar is fixedly connected to a support seat.

[0016] As a further improvement of this utility model, the bottom of each of the multiple support seats is fixedly connected with an anti-slip rubber pad.

[0017] As a further improvement of this utility model, the activated carbon filter plate is detachably connected to the multi-media filtration tank by multiple bolt fasteners.

[0018] As a further improvement of this utility model, zeolite and ceramsite in a 1:2 ratio can be placed in the multi-media filter tank.

[0019] As a further improvement of this utility model, a grid can be installed in the physicochemical treatment tank, which can be used to intercept floating objects in the sewage.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] By inputting wastewater into a physicochemical treatment tank, and then connecting it sequentially through multiple connecting pipes to an electrolysis tank, a multi-functional tank, a two-stage A / O tank, and a multi-media filtration tank, the system effectively removes pollutants, especially nitrogenous pollutants, and is relatively easy to operate. Furthermore, the coordinated use of the aeration device and aeration heads, along with the two-stage A / O tank, ensures the complete nitrification of nitrogenous organic matter. Finally, the combined use of the multi-media filtration tank and activated carbon filter plates effectively traps activated sludge, reducing sludge load and increasing the removal rate of organic nitrogen compounds, thereby enhancing the denitrification effect. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the overall main view of this utility model.

[0023] Figure 2 This is a three-dimensional structural schematic diagram of a partial cross-section of the overall main view of this utility model.

[0024] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0025] Figure 4 This is a schematic diagram of the overall front view of the present invention.

[0026] In the diagram: 1. Physicochemical treatment tank; 2. Electrolysis tank; 3. Baffle plate; 4. Multifunctional tank; 5. Main body of aeration device; 6. Aeration head; 7. Two-stage A / O tank; 8. Multi-media filtration tank; 9. Activated carbon filter plate; 10. Regulating valve; 11. Drain pipe; 12. Connecting pipe; 13. Support column; 14. Support base; 15. Anti-slip rubber pad; 16. Bolts and fasteners. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figures 1-4 In this embodiment of the invention, a nitrogen-containing wastewater denitrification system includes:

[0030] Physicochemical treatment tank 1;

[0031] Electrolytic cell 2, with a partition 3 inside, which is used to divide the electrolytic cell 2 into an anode chamber and a cathode chamber;

[0032] Multifunctional pool 4, with an aeration device body 5 at one end of the multifunctional pool 4, and an aeration head 6 of the aeration device body 5 located inside the multifunctional pool 4.

[0033] Two-stage A / O tank 7, with a biological denitrification system installed within it;

[0034] A multi-media filter tank 8 is provided with an activated carbon filter plate 9, and one end of the multi-media filter tank 8 is connected to a drain pipe 11 with a regulating valve 10.

[0035] Multiple connecting pipes 12 are arranged between the physicochemical treatment tank 1, the electrolysis tank 2, the multifunctional tank 4, the two-stage A / O tank 7, and the multi-media filtration tank 8.

[0036] Multiple sets of support components are installed at the bottom of the physicochemical treatment tank 1, electrolysis tank 2, multifunctional tank 4, two-stage A / O tank 7, and multi-media filtration tank 8. These support components are used to support the physicochemical treatment tank 1, electrolysis tank 2, multifunctional tank 4, two-stage A / O tank 7, and multi-media filtration tank 8 in their respective positions.

[0037] This nitrogen-containing wastewater denitrification system, in operation, involves inputting wastewater into a physicochemical treatment tank 1, followed by a series of interconnected components including an electrolysis tank 2, a multi-functional tank 4, a two-stage A / O tank 7, and a multi-media filter tank 8. This interconnected system enhances the removal of pollutants, especially nitrogenous pollutants, and is relatively easy to operate. Furthermore, the coordinated arrangement of the aeration device 5, aeration heads 6, and the two-stage A / O tank 7 ensures the complete nitrification of nitrogenous organic matter. Finally, the multi-media filter tank 8 and activated carbon filter plates 9 effectively trap activated sludge in the wastewater, significantly reducing sludge load and greatly improving the removal rate of organic nitrogen compounds, thereby enhancing the denitrification effect.

[0038] exist Figure 1-4 In the middle: the support component includes four pillars 13, each of which is correspondingly set at the bottom of the base. The other end of each pillar 13 is fixedly connected to a support seat 14, and the bottom of each support seat 14 is fixedly connected to an anti-slip pad 15.

[0039] This nitrogen-containing wastewater denitrification system, through the arrangement of this structure, with the cooperation of multiple pillars 13 and support bases 14, facilitates the placement of its physicochemical treatment tank 1, electrolysis tank 2, multifunctional tank 4, two-stage A / O tank 7, and multi-media filtration tank 8 in the usage position. Furthermore, the installation of multiple anti-slip rubber pads 15 increases the contact friction between the support base 14 and the ground, preventing slippage during use.

[0040] exist Figure 1-4 In the middle section, the activated carbon filter plate is detachably connected to the multi-media filter tank 8 by multiple bolts and fasteners 16. The multi-media filter tank 8 can be filled with zeolite and ceramsite in a 1:2 ratio. Through the setting of zeolite and ceramsite, the hydraulic retention time in the multi-media filter tank 8 is 5 to 10 minutes during the treatment process, thereby improving the filtration effect on wastewater. A grid can be installed in the physicochemical treatment tank 1, which can be used to intercept floating objects in the sewage.

[0041] In this embodiment, the aeration device body 5, the electrolysis cell 2, and the two-stage A / O tank 7 are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here, we are only using them without making any structural or functional improvements, so we will not go into detail here. The aeration device body 5, the electrolysis cell 2, and the two-stage A / O tank 7 are all equipped with matching control switches. The installation position of the control switches is selected according to actual usage needs to facilitate operation and control by the operator. The technology is already very mature and can be implemented.

[0042] The implementation principle of a nitrogen-containing wastewater denitrification system according to an embodiment of this application is as follows: First, through the cooperation of multiple pillars 13 and support bases 14, the electrolysis tank 2, multifunctional tank 4, two-stage A / O tank 7, and multi-media filter tank 8 are sequentially supported and placed in the use position. Then, wastewater is input into the physicochemical treatment tank 1. The electrolysis tank 2, multifunctional tank 4, two-stage A / O tank 7, and multi-media filter tank 8 are sequentially connected by multiple connecting pipes, which improves the removal effect of pollutants, especially nitrogen pollutants. Second, through the cooperation of the aeration device body 5, aeration head 6, and two-stage A / O tank 7, nitrogen-containing organic matter can be fully nitrified. Then, through the cooperation of the multi-media filter tank 8 and activated carbon filter plate 9, activated sludge in the wastewater is intercepted, thereby effectively reducing sludge load and correspondingly improving the removal rate of organic nitrogen compounds, ensuring a high denitrification effect.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nitrogen removal system for nitrogen-containing wastewater, characterized in that, include: Physicochemical treatment tank (1); An electrolytic cell (2) is provided with a partition (3) inside the electrolytic cell (2) to divide the electrolytic cell (2) into an anode chamber and a cathode chamber; A multifunctional pool (4) is provided with an aeration device body (5) at one end of the multifunctional pool (4), and the aeration head (6) of the aeration device body (5) is provided inside the multifunctional pool (4). Two-stage A / O tank (7), wherein a biological denitrification system is provided in the two-stage A / O tank (7); A multi-media filter tank (8) is provided with an activated carbon filter plate (9) and one end of the multi-media filter tank (8) is connected to a drain pipe (11) with a regulating valve (10). Multiple connecting pipes (12) are arranged between the physicochemical treatment tank (1), the electrolytic tank (2), the multifunctional tank (4), the two-stage A / O tank (7), and the multi-media filtration tank (8); Multiple sets of support components are provided at the bottom of the physicochemical treatment tank (1), electrolytic tank (2), multifunctional tank (4), two-stage A / O tank (7), and multi-media filtration tank (8), which are used to support the physicochemical treatment tank (1), electrolytic tank (2), multifunctional tank (4), two-stage A / O tank (7), and multi-media filtration tank (8) in the use position.

2. The nitrogen removal system for nitrogen-containing wastewater according to claim 1, characterized in that: The support assembly includes four pillars (13), each of which is disposed at the bottom of the base, and the other end of each pillar (13) is fixedly connected to a support base (14).

3. The nitrogen removal system for nitrogen-containing wastewater according to claim 2, characterized in that: The bottom of each of the multiple support bases (14) is fixedly connected with an anti-slip rubber pad (15).

4. The nitrogen removal system for nitrogen-containing wastewater according to claim 1, characterized in that: The activated carbon filter plate is detachably connected to the multi-media filter tank (8) by multiple bolts and fasteners (16).

5. A nitrogen-containing wastewater denitrification system according to claim 1, characterized in that: The multi-media filter tank (8) can contain zeolite and ceramsite in a 1:2 ratio.

6. The nitrogen removal system for nitrogen-containing wastewater according to claim 1, characterized in that: A grid can be installed in the physicochemical treatment tank (1), which can be used to intercept floating objects in the sewage.

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