Nitrogen source adding device for sewage plant

Abstract

The utility model discloses a nitrogen source adding device for a sewage plant, and belongs to the technical field of industrial sewage treatment. A total nitrogen source storage tank of the device is connected to a nitrogen source adding point of a water inlet pipeline through a nitrogen source dosing pump, the water inlet pipeline is connected to a dosing homogenizer through an inlet of a homogenizer, and an outlet of the homogenizer is connected to a biochemical pool through a homogenizer water outlet pipe. The mesh plates are arranged at the two ends of the dosing homogenizer, and the front side baffles and the rear side baffles are alternately arranged in the dosing homogenizer, so that the dosing liquid flows in the dosing homogenizer in an S shape, and then the liquid is uniformly mixed. The device is simple in structure and can be widely applied to the sewage treatment industry.

Description

Technical Field

[0001] The utility model relates to a device for adding a nitrogen source to a sewage plant, belonging to the technical field of industrial sewage treatment. Background Art

[0002] The nitrogen content in general industrial wastewater is often low, which may cause nitrogen deficiency during biochemical treatment. Without nitrogen, it is difficult for microorganisms to grow. When the substrate is sufficient, if nitrogen is lacking, microorganisms cannot synthesize cytoplasm and cannot reproduce. Over time, the microorganisms will age and die. This is because when nitrogen is lacking, the synthesis of substances such as proteins, nucleic acids, and phospholipids is hindered. However, many water plants use manual spraying to add nitrogen sources, which not only wastes manpower but also causes uneven dosage. Uneven mixing of nitrogen sources will change the competitive relationship of microbial communities. In areas with sufficient nitrogen sources, certain microorganisms that can quickly utilize nitrogen sources will over-reproduce, while other microorganisms with more stringent nitrogen requirements or lower utilization efficiency will be inhibited, which will have an adverse impact on wastewater treatment. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a device for adding nitrogen source to a sewage treatment plant. The device mixes the nitrogen source and sewage through a homogenizer before entering the biochemical pool, avoiding the adverse effects caused by uneven mixing of the nitrogen source caused by directly adding the nitrogen source into the biological pool.

[0004] The utility model solves the technical problems of the prior art by adopting a technical solution: a device for adding a nitrogen source to a sewage treatment plant, which includes a nitrogen source storage tank and a biochemical pool. The nitrogen source storage tank is connected to a nitrogen source adding point of a water inlet pipe through a nitrogen source dosing pump. The water inlet pipe is connected to a dosing homogenizer through a homogenizer inlet, and the homogenizer outlet is connected to the biochemical pool through a homogenizer outlet pipe.

[0005] Mesh plates are provided at both ends of the dosing homogenizer, and rear baffles and front baffles are alternately provided inside the dosing homogenizer, forming an S-shaped flow channel inside the dosing homogenizer; the front baffle and the rear baffle are both superior arc surfaces, and the chord length is 3 / 5 of the diameter; the front baffle and the rear baffle are staggered 180 degrees;

[0006] The water inlet pipe is also provided with an inlet electromagnetic flowmeter and an inlet water quality sampling port; an inlet ammonia nitrogen online analyzer and an inlet COD online analyzer are provided at the inlet water quality sampling port, and an outlet ammonia nitrogen online analyzer is provided on the homogenizer outlet pipe.

[0007] Furthermore, an inlet electromagnetic flowmeter, an inlet water quality sampling port, and a nitrogen source addition point are sequentially arranged in the water flow direction of the water inlet pipe (from the water inlet of the pipe to the homogenizer).

[0008] Furthermore, the hole pitch of the mesh plate is 15mm-30mm.

[0009] Furthermore, the device is also provided with a central controller, which is electrically connected to the inlet electromagnetic flowmeter, the inlet ammonia nitrogen online analyzer, the inlet COD online analyzer, and the outlet ammonia nitrogen online analyzer.

[0010] The beneficial effects of this utility model are as follows: the device includes a nitrogen source storage tank, a nitrogen source dosing pump, a dosing homogenizer, and an inlet pipe. The inlet pipe is equipped with an inlet electromagnetic flowmeter, an inlet ammonia nitrogen online analyzer, and an inlet COD online analyzer. The homogenizer outlet pipe is equipped with an outlet ammonia nitrogen online analyzer. The dosing homogenizer is equipped with alternating front and rear baffles, allowing the dosing solution to flow in an S-shaped pattern, thereby mixing the solution. The device has a simple structure and can be widely used in the sewage treatment industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention is a structural diagram of a device for adding nitrogen source to a sewage treatment plant.

[0012] Figure 2 It is an axial cross-sectional view of the dosing homogenizer.

[0013] Figure 3 It is a radial cross-sectional view of the dosing homogenizer.

[0014] In the figure: 1. Nitrogen source storage tank, 2. Nitrogen source dosing pump, 3. Water inlet pipe, 4. Inlet water quality sampling port, 5. Inlet electromagnetic flowmeter, 6. Inlet ammonia nitrogen online analyzer, 7. Nitrogen source addition point, 8. Dosing homogenizer, 8a. Homogenizer inlet, 8b. Homogenizer outlet, 8c. Mesh plate, 8d. Rear baffle, 8e. Front baffle, 9. Outlet ammonia nitrogen online analyzer, 10. Central controller, 11. Homogenizer outlet pipe, 12. Inlet COD online analyzer, 13. Biochemical pool. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] Figure 1 A structural diagram of an automatic nitrogen source dosing device for a sewage treatment plant is shown. The device comprises a nitrogen source storage tank 1, a nitrogen source dosing pump 2, an inlet pipe 3, an inlet water sampling port 4, an inlet electromagnetic flowmeter 5, an inlet ammonia nitrogen online analyzer 6, a nitrogen source addition point 7, a dosing homogenizer 8, an outlet ammonia nitrogen online analyzer 9, a central controller 10, and an operation panel.

[0018] The device includes a nitrogen source storage tank 1 and a biochemical pool 13. The nitrogen source storage tank 1 is connected to a nitrogen source addition point 7 of a water inlet pipe 3 through a nitrogen source dosing pump 2. The water inlet pipe 3 is connected to a dosing homogenizer 8 through a homogenizer inlet 8a. The homogenizer outlet 8b is connected to the biochemical pool 13 through a homogenizer outlet pipe 11.

[0019] Mesh plates 8c are provided at both ends of the dosing homogenizer 8, and rear baffles 8d and front baffles 8e are alternately provided inside the dosing homogenizer 8, so that the dosing liquid flows in an S-shaped manner inside the dosing homogenizer 8;

[0020] The water inlet pipe 3 is also provided with a water inlet electromagnetic flowmeter 5 and an inlet water quality sampling port 4; the inlet water quality sampling port 4 is provided with an inlet ammonia nitrogen online analyzer 6 and an inlet COD online analyzer 12.

[0021] An outlet ammonia nitrogen online analyzer 9 is provided on the outlet pipe 11 of the homogenizer;

[0022] The device is further provided with a central controller 10 , which is electrically connected to the inlet electromagnetic flowmeter 5 , the inlet ammonia nitrogen online analyzer 6 , the inlet COD online analyzer 12 , and the outlet ammonia nitrogen online analyzer 9 .

[0023] As a specific implementation, the front baffle 8e and the rear baffle 8d are both excellent arc surfaces, and the chord length is 3 / 5 of the diameter; the front baffle 8e and the rear baffle 8d are staggered by 180 degrees.

[0024] As a specific implementation, the water inlet pipe 3 is sequentially provided with a water inlet electromagnetic flowmeter 5, an inlet water quality sampling port 4, and a nitrogen source addition point 7 from the water inlet of the pipe to the homogenizer inlet 8a.

[0025] As a specific implementation, the hole pitch of the mesh plate 8c is 15mm-30mm.

[0026] As a specific embodiment, the nitrogen source storage tank 1 is constructed of fiberglass with a capacity of 20 m³. The nitrogen source dosing pump 2 is constructed of polytetrafluoroethylene, with dual pumps for both use and backup. The motor output speed, as well as its start and stop, are controlled by a central controller 10. The dosing homogenizer 8 is constructed of 316 stainless steel, with a total length of 5000 mm and a diameter of 1000 mm. Both the homogenizer inlet 8a and outlet 8b utilize circular mesh plates 8c with a 50 mm diameter and a 20 mm pitch. Inside the dosing homogenizer 8, baffles with a 1000 mm diameter and a major arc chord length of 600 mm are installed every 400 mm, with adjacent baffles staggered 180°. An inlet electromagnetic flowmeter 5 and an inlet water quality sampling port 4 are installed on the water inlet pipe 3, in accordance with the direction of water flow. An inlet ammonia nitrogen online analyzer 6 and an inlet COD online analyzer 12 are installed on the inlet water quality sampling port 4. The inlet ammonia nitrogen online analyzer 6, the homogenizer outlet ammonia nitrogen online analyzer 9 and the inlet COD online analyzer 12 are electrically connected to the central controller 10. The nitrogen source addition point 7 is 1000 mm away from the homogenizer inlet 8a, the inlet water quality sampling port 4 is 3000 mm away from the homogenizer inlet 8a, and the outlet ammonia nitrogen online analyzer 9 is installed on the homogenizer outlet pipe 11 at a distance of 2000 mm from the homogenizer outlet 8b.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for adding nitrogen source to a sewage treatment plant, comprising a nitrogen source storage tank (1) and a biochemical pool (13), characterized in that: The nitrogen source storage tank (1) is connected to the nitrogen source addition point (7) of the water inlet pipe (3) via the nitrogen source dosing pump (2); the water inlet pipe (3) is connected to the dosing homogenizer (8) via the homogenizer inlet (8a); and the homogenizer outlet (8b) is connected to the biochemical pool (13) via the homogenizer outlet pipe (11); Mesh plates (8c) are provided at both ends of the dosing homogenizer (8), and rear baffles (8d) and front baffles (8e) are alternately provided inside the dosing homogenizer (8), forming an S-shaped flow channel inside the dosing homogenizer (8); the front baffle (8e) and the rear baffle (8d) are both superior arc surfaces, and the chord length is 3 / 5 of the diameter; the rear baffle (8d) and the front baffle (8e) are staggered by 180 degrees; The water inlet pipe (3) is also provided with a water inlet electromagnetic flowmeter (5) and an inlet water quality sampling port (4); an inlet water ammonia nitrogen online analyzer (6) and an inlet water COD online analyzer (12) are provided at the inlet water quality sampling port (4); and an outlet water ammonia nitrogen online analyzer (9) is provided on the homogenizer outlet pipe (11).

2. The device for adding nitrogen source to a sewage treatment plant according to claim 1, characterized in that: An inlet electromagnetic flowmeter (5), an inlet water quality sampling port (4), and a nitrogen source addition point (7) are sequentially arranged on the water inlet pipe (3) along the water flow direction.

3. The device for adding nitrogen source to a sewage treatment plant according to claim 1, characterized in that: The hole spacing of the mesh plate (8c) is 15 mm to 30 mm.

4. The device for adding nitrogen source to a sewage treatment plant according to claim 1, characterized in that: The device is further provided with a central controller (10), which is electrically connected to the inlet electromagnetic flowmeter (5), the inlet ammonia nitrogen online analyzer (6), the inlet COD online analyzer (12), and the outlet ammonia nitrogen online analyzer (9).

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