A self-sustaining denitrification nitrogen removal sewage treatment device

Abstract

The utility model relates to sewage treatment technical field, concretely is a kind of autotrophic denitrification nitrogen removal sewage treatment equipment, the utility model includes sewage reaction tank and the multiple groups of filler filter layer being set in pool, and the U-shaped structure is to sewage reaction tank, and shunt mechanism is arranged between both ends thereof;The shunt mechanism includes shunt bin, first shunt pipe, second shunt pipe, adjusting ring and sealing plug;First shunt pipe and second shunt pipe are symmetrically connected to both ends of shunt bin, and respectively lead to both ends of sewage reaction tank, the utility model is designed as U-shaped by sewage reaction tank, and the sewage input from outside is switched by shunt mechanism, ensure that in the process of sewage flow, multiple groups of filler filter layer can evenly remove nitrate and nitrite removal, avoid input sewage always first close to same filler filter layer, leading to decomposition product on multiple groups of filler filter layer gradually reduces along the direction of sewage flow.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an autotrophic denitrification wastewater treatment device. Background Technology

[0002] Autotrophic denitrification technology utilizes autotrophic denitrifying microorganisms to reduce nitrates or nitrites in wastewater into nitrogen gas without the addition of an external organic carbon source, thereby effectively removing total nitrogen from water bodies and inhibiting eutrophication. This technology is typically carried out in a reaction tank equipped with a packing filter layer, where microorganisms adhere to the surface of the packing material to form a biofilm.

[0003] In the prior art, such as the autotrophic denitrification wastewater treatment equipment proposed in patent application number "CN202410124749.0", the wastewater treatment efficiency is accelerated by quickly cleaning up the decomposition products produced by denitrifying microorganisms during wastewater treatment, thereby enabling the wastewater to maintain high-efficiency denitrification treatment. The equipment includes a reaction tank, an air inlet pipe, and a one-way valve.

[0004] However, in existing technologies, wastewater typically flows into the reaction tank from one end at a fixed point, passing through multiple packing filter layers sequentially. This unidirectional flow pattern has a significant drawback: the first packing filter layer at the inlet end always comes into contact with the highest concentration of pollutants first, bearing the majority of the degradation load. This results in significant differences in its microbial activity, packing blockage, and product accumulation compared to the downstream packing layers. This uneven load distribution accelerates the aging and blockage of the initial packing layer, shortening its service life and replacement cycle. Furthermore, the uneven flow path also affects the hydraulic performance and treatment stability of the entire system. Utility Model Content

[0005] The purpose of this invention is to provide an autotrophic denitrification wastewater treatment device to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An autotrophic denitrification wastewater treatment device includes a wastewater reaction tank and multiple sets of packing filter layers installed in the tank. The wastewater reaction tank has a U-shaped structure and a diversion mechanism is provided between its two ends.

[0008] The diversion mechanism includes a diversion chamber, a first diversion pipe, a second diversion pipe, an adjusting ring, and sealing plugs; the first and second diversion pipes are symmetrically connected to both ends of the diversion chamber and lead to both ends of the wastewater reaction tank respectively; a wastewater connection pipe is provided on one side of the diversion chamber; the adjusting ring is horizontally set inside the diversion chamber, and sealing plugs are fixedly connected to both sides of it, and the sealing plugs are adapted to the openings of the first and second diversion pipes.

[0009] Preferably, the diversion chamber is provided with a control mechanism for driving the adjustment ring to move horizontally. The control mechanism includes a control screw and a T-shaped connecting bracket. The T-shaped connecting bracket is fixedly connected to the adjustment ring. One end of the control screw is rotatably connected to the inner wall of the diversion chamber, and the other end extends to the outside of the diversion chamber and is connected to a control handle. The control screw is threadedly connected to the T-shaped connecting bracket.

[0010] Preferably, the control mechanism further includes two guide shafts fixed inside the diversion chamber, and the guide shafts are slidably connected to the T-shaped connecting bracket.

[0011] Preferably, the end of the sealing plug has a curved surface structure.

[0012] Preferably, a support frame is fixed between the two ends of the wastewater reaction tank, and the support frame is fixedly connected to the diversion chamber.

[0013] Preferably, both ends of the wastewater reaction tank are connected to wastewater output pipes, and control valves are installed on the wastewater output pipes.

[0014] The beneficial effects of this utility model are:

[0015] This invention designs the wastewater reaction tank in a U-shape and uses a diversion mechanism to switch the input wastewater, allowing wastewater to enter from both ends of the tank alternately. This ensures that during wastewater flow, multiple sets of filter media can uniformly convert and remove nitrates and nitrites, preventing the input wastewater from always initially approaching the same filter media. This avoids the decomposition products on multiple filter media gradually decreasing along the wastewater flow direction, resulting in uneven decomposition effects and impacting the service life of the filter media and the flow capacity of the wastewater. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Schematic diagram of one end of the wastewater reaction tank;

[0019] Figure 3 This is a utility model Figure 1 A top-view sectional view of the central distribution compartment;

[0020] Figure 4 This is a utility model Figure 3 Schematic diagram of the middle sealing plug section;

[0021] Figure 5 This is a utility model Figure 4 Rear view of the adjustment ring.

[0022] The attached figures are labeled as follows:

[0023] 1. Wastewater reaction tank; 2. Packing filter layer; 301. Diversion chamber; 302. First diversion pipe; 303. Second diversion pipe; 304. Adjusting ring; 305. Sealing plug; 306. Wastewater connection pipe; 401. Control screw; 402. T-shaped connecting bracket; 403. Control handle; 404. Guide shaft; 5. Drainage pipe; 6. Support frame; 7. Wastewater output pipe; 701. Control valve. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] An autotrophic denitrification wastewater treatment device includes a wastewater reaction tank 1, which adopts a U-shaped design. Multiple sets of packing filter layers 2 are symmetrically installed inside the wastewater reaction tank 1. Through the action of autotrophic denitrifying microorganisms in the packing filter layers 2, nitrates and nitrites can be converted and removed. This biological denitrification pathway can effectively reduce the total nitrogen in wastewater, thereby inhibiting the eutrophication problem caused by nitrogen nutrients. Both the wastewater reaction tank 1 and the packing filter layers 2 are existing technologies. Air is also introduced into the wastewater through an air pump in the wastewater reaction tank 1 to increase the oxygen content in the wastewater.

[0026] The two ends of the wastewater reaction tank 1 are located in the same direction, and a diversion mechanism is provided between the two ends of the wastewater reaction tank 1. The diversion mechanism is used to receive wastewater from the outside and control the wastewater to flow into one of the two ends of the wastewater reaction tank 1.

[0027] The diversion mechanism includes a diversion chamber 301. A first diversion pipe 302 and a second diversion pipe 303 are fixedly connected to both ends of the diversion chamber 301, respectively. The first diversion pipe 302 and the second diversion pipe 303 are symmetrically arranged. A horizontally movable adjustment ring 304 is provided inside the diversion chamber 301 and between the first diversion pipe 302 and the second diversion pipe 303. A sealing plug 305 is fixedly connected to both sides of the adjustment ring 304. The first diversion pipe 302 and the second diversion pipe 303 are both adapted to the sealing plug 305. One end of the sealing plug 305 adopts a curved surface design, which can guide the sealing plug 305 so that the sealing plug 305 can move better into the first diversion pipe 302 or the second diversion pipe 303 and close the opening of the first diversion pipe 302 or the second diversion pipe 303 inside the diversion chamber 301.

[0028] A sewage connection pipe 306 is fixedly installed on one side of the diversion chamber 301. The sewage connection pipe 306 is used to connect to an external sewage input pipe to input sewage into the interior of the diversion chamber 301.

[0029] A control mechanism is provided on the diversion chamber 301. The control mechanism is used to control the horizontal movement of the adjusting ring 304 and the sealing plugs 305 on both sides. The control mechanism includes a control screw 401 and a T-shaped connecting bracket 402. The T-shaped connecting bracket 402 is fixed to the top of the adjusting ring 304. One end of the control screw 401 is rotatably connected to the inner wall of the diversion chamber 301, and the other end extends to the outside of the diversion chamber 301 and is fixedly connected to a control handle 403 with anti-slip texture. The control screw 401 and the T-shaped connecting bracket 402 are threadedly connected so that the rotation of the control screw 401 drives the T-shaped connecting bracket 402 and the adjusting ring 304 to move. Two guide shafts 404 are fixedly connected inside the diversion chamber 301. The guide shafts 404 and the T-shaped connecting bracket 402 are slidably connected. The T-shaped connecting bracket 402 has two round holes for the guide shafts 404 to pass through, and also has a threaded hole to achieve threaded connection with the control screw 401.

[0030] A drain pipe 5 is fixedly connected to the bottom of the diversion chamber 301. The inner diameter of the drain pipe 5 is a circle with a diameter of 1 cm. The other end of the drain pipe 5 extends to any end of the sewage reaction tank 1. After the external sewage stops being input, the drain pipe 5 can drain the sewage in the diversion chamber 301. Moreover, its flow rate is too small compared to the first diversion pipe 302 and the second diversion pipe 303, so it will not affect the diversion of sewage.

[0031] A support frame 6 is fixedly connected between the two ends of the wastewater reaction tank 1. The top of the support frame 6 is fixedly connected to the diversion chamber 301, providing support for the diversion chamber 301.

[0032] Wastewater reaction tank 1 is fixedly connected to wastewater output pipes 7 at both ends. Control valves 701 are installed on the wastewater output pipes 7. Both wastewater output pipes 7 are connected to the same equipment in the next wastewater treatment stage, which can transport the denitrified wastewater to the next wastewater treatment stage.

[0033] The working principle of the autotrophic denitrification wastewater treatment equipment provided by this utility model is as follows:

[0034] The control screw 401 is rotated by manually turning the control handle 403. The control screw 401 drives the T-shaped connecting bracket 402 to move horizontally. The T-shaped connecting bracket 402 drives the sealing plugs 305 on both sides to move through the adjusting ring 304. The sealing plugs 305 can move in the direction of the first diversion pipe 302 or the second diversion pipe 303 to seal the first diversion pipe 302 or the second diversion pipe 303.

[0035] When the sealing plug 305 closes the first diversion pipe 302, the sewage that is input into the diversion chamber 301 through the sewage connection pipe 306 can enter one end of the sewage reaction tank 1 through the second diversion pipe 303, and flow to the other end of the sewage reaction tank after passing through multiple sets of packing filter layers 2.

[0036] When the sealing plug 305 closes the second diversion pipe 303, the sewage that is input into the diversion chamber 301 through the sewage connection pipe 306 can enter the other end of the sewage reaction tank 1 through the first diversion pipe 302, and flow towards the end of the sewage reaction tank near the second diversion pipe 303 after passing through multiple sets of packing filter layers 2. The order in which the sewage passes through the multiple sets of packing filter layers 2 is the opposite of that when the first diversion pipe 302 is closed.

[0037] Compared with related technologies, the autotrophic denitrification wastewater treatment equipment provided by this utility model has the following beneficial effects:

[0038] This invention designs the wastewater reaction tank 1 in a U-shape and uses a diversion mechanism to switch the externally input wastewater, allowing wastewater to enter the wastewater reaction tank 1 alternately from both ends. This ensures that during the wastewater flow process, multiple sets of packing filter layers 2 can uniformly convert and remove nitrates and nitrites, preventing the input wastewater from always initially approaching the same packing filter layer 2. This would cause the decomposition products on the multiple packing filter layers 2 to gradually decrease along the wastewater flow direction, resulting in uneven decomposition effects and affecting the service life of the packing filter layers 2 and the wastewater flow capacity.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An autotrophic denitrification wastewater treatment device, comprising a wastewater reaction tank (1) and multiple sets of packing filter layers (2) disposed within the tank, characterized in that, The wastewater reaction tank (1) has a U-shaped structure with a diversion mechanism between its two ends; The diversion mechanism includes a diversion chamber (301), a first diversion pipe (302), a second diversion pipe (303), an adjusting ring (304), and a sealing plug (305); the first diversion pipe (302) and the second diversion pipe (303) are symmetrically connected to both ends of the diversion chamber (301) and respectively lead to both ends of the sewage reaction tank (1); a sewage connection pipe (306) is provided on one side of the diversion chamber (301); the adjusting ring (304) is horizontally set inside the diversion chamber (301), and sealing plugs (305) are fixedly connected to both sides of it, and the sealing plugs (305) are adapted to the pipe openings of the first diversion pipe (302) and the second diversion pipe (303).

2. The autotrophic denitrification wastewater treatment equipment according to claim 1, characterized in that, The diversion chamber (301) is provided with a control mechanism for driving the adjustment ring (304) to move horizontally. The control mechanism includes a control screw (401) and a T-shaped connecting bracket (402). The T-shaped connecting bracket (402) is fixedly connected to the adjustment ring (304). One end of the control screw (401) is rotatably connected to the inner wall of the diversion chamber (301), and the other end extends to the outside of the diversion chamber (301) and is connected to a control handle (403). The control screw (401) is threadedly connected to the T-shaped connecting bracket (402).

3. A self-supporting denitrification wastewater treatment device according to claim 2, characterized in that, The control mechanism also includes two guide shafts (404) fixed inside the diversion chamber (301), and the guide shafts (404) are slidably connected to the T-shaped connecting bracket (402).

4. The autotrophic denitrification wastewater treatment equipment according to claim 1, characterized in that, The end of the sealing plug (305) has a curved structure.

5. A self-supporting denitrification wastewater treatment device according to claim 1, characterized in that, A support frame (6) is fixed between the two ends of the wastewater reaction tank (1), and the support frame (6) is fixedly connected to the diversion chamber (301).

6. A self-supporting denitrification wastewater treatment device according to claim 5, characterized in that, Both ends of the wastewater reaction tank (1) are connected to wastewater output pipes (7), and control valves (701) are installed on the wastewater output pipes (7).

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