Sewage treatment dephosphorization mechanism

Abstract

The utility model provides a sewage treatment dephosphorization mechanism, and belongs to the technical field of sewage treatment. The mechanism comprises an air blower and a plurality of contact oxidation ponds which are distributed around the air blower as the center, the contact oxidation pond comprises a circular pond body, a buffer cylinder vertically arranged in the center of the pond body, a plurality of annular filler layers arranged around the buffer cylinder at intervals, and a drainage groove formed in the bottom of the inner side face of the pond body; an air outlet of the air blower and the interiors of the different pool bodies are connected with air inlet pipes; a drainage opening is formed in the outer side of the drainage groove; a water outlet is formed in the lower part of the buffer cylinder, a water inlet pipe is arranged in the buffer cylinder, one end of the water inlet pipe is positioned in the water inlet pipe, the other end of the water inlet pipe extends out of the tank body and is provided with water delivery pumps, one water delivery pump is externally connected with sewage to be treated through a pipeline, and the rest water delivery pumps are sequentially connected in series with the water outlets of the adjacent contact oxidation tanks through pipelines. The mechanism can intensify the layout of the contact oxidation pond and the air blowers, reduce the configuration number of the air blowers, and improve the dephosphorization effect.

Description

Technical Field

[0001] This disclosure relates to the field of wastewater treatment technology, specifically to a wastewater treatment phosphorus removal mechanism. Background Technology

[0002] Phosphorus in natural water bodies mainly originates from pesticides, fertilizers, detergents, industrial production, and domestic sewage. When the phosphorus concentration in water exceeds 0.02 mg / L, it can cause eutrophication and water pollution. In recent years, domestic and international regulations on phosphorus emissions have become increasingly stringent, with a general emphasis on large-scale control of phosphorus levels in water bodies. Currently, the main methods for treating phosphorus-containing wastewater include chemical precipitation, crystallization, adsorption, oxidation, biological methods, and biochemical methods. Among these, chemical precipitation is the most practical and effective method for phosphorus removal due to its simple operation and stable phosphorus removal efficiency, but it also suffers from secondary pollution and high treatment costs. Biological phosphorus removal has economic and environmental advantages, but its phosphorus removal effect is unstable and its removal efficiency for inorganic phosphorus is poor, making it impossible to guarantee that wastewater meets discharge standards. Biochemical methods mainly involve setting up contact oxidation tanks for wastewater treatment. Contact oxidation tanks are biological treatment devices that primarily use biofilm formation combined with activated sludge. By providing an oxygen source, the organic matter in the wastewater is adsorbed and degraded by microorganisms, thus purifying the water. Existing contact oxidation tanks are mainly rectangular tanks, and there are usually at least two. Multiple contact oxidation tanks are connected in series to form a contact oxidation treatment section. Contact oxidation tanks connected in a straight line occupy a large area, and in order to avoid the impact of excessively long air supply ducts on the air supply volume, each contact oxidation tank may need to be equipped with a separate blower, which increases construction and maintenance costs. Utility Model Content

[0003] The main objective of this disclosure is to provide a wastewater treatment phosphorus removal mechanism that can streamline the layout of the contact oxidation tank and blowers, reducing the number of blowers required. To this end, this disclosure provides the following main technical solutions:

[0004] A wastewater treatment phosphorus removal mechanism includes a blower and several contact oxidation tanks distributed around the blower. Each contact oxidation tank includes a circular tank body, a buffer cylinder erected at the center of the tank body, several annular packing layers spaced apart around the buffer cylinder, and a drainage trough located at the bottom of the inner side of the tank body. Air inlet pipes are connected to the air outlet of the blower and the interior of each tank body. A drain outlet is provided on the outer side of the drainage trough. A water outlet is located at the lower part of the buffer cylinder, and an inlet pipe is provided inside it. One end of the inlet pipe is located inside the inlet pipe, and the other end extends outside the tank body and is equipped with a water pump. One of the water pumps receives the wastewater to be treated through a pipe outside the tank, and the remaining water pumps are sequentially connected to the drain outlets of adjacent contact oxidation tanks through pipes, thus connecting the several contact oxidation tanks in series.

[0005] In at least one embodiment, the contact oxidation tank further includes a mounting frame, which includes several load-bearing rods spanning the top of the tank body and several mounting grooves with openings facing the bottom of the load-bearing rods. The mounting grooves are all annular grooves and are distributed around the buffer cylinder. The diameters of the several mounting grooves are different, and the upper end of the packing layer is fixed in the opening of the mounting groove.

[0006] In at least one embodiment, the top of the inner sidewall of the drainage channel is provided with a notch.

[0007] In at least one embodiment, the air inlet pipe includes a first pipe section extending from the air outlet of the blower to the top of the contact oxidation tank, a second pipe section extending from the end of the first pipe section into the bottom of the buffer cylinder, and several air outlet pipe sections radially distributed with the lower end of the second pipe section as the center, wherein the air outlet pipe sections are provided with air outlet holes.

[0008] The wastewater treatment phosphorus removal mechanism provided in this disclosure can achieve at least the following beneficial effects: By rearranging the spatial arrangement of the contact oxidation tank and the blower, the contact oxidation tank is set up around the blower, avoiding the drawbacks of unreasonable unidirectional linear layout and the need to configure multiple blowers; moreover, the contact oxidation tank of this disclosure adopts a circular tank body, and the packing layer inside the tank is a multi-layered packing layer of concentric circles. The wastewater entering the tank gradually diffuses from the center to the periphery, and the internal layout is more compact, which also conforms to the trend of gradually decreasing wastewater concentration, so that the volume of the contact oxidation tank can be made smaller, further saving construction costs. Attached Figure Description

[0009] One or more embodiments of this disclosure will now be described by way of example only with reference to the accompanying drawings, in which:

[0010] Figure 1 This is a perspective view of a wastewater treatment phosphorus removal mechanism shown in an embodiment of this disclosure;

[0011] Figure 2 for Figure 1 Top view of the embodiment;

[0012] Figure 3 for Figure 1 A perspective view of the contact oxidation tank in the embodiment;

[0013] Figure 4 for Figure 1 A longitudinal sectional view of the contact oxidation tank in the embodiment.

[0014] The diagram is labeled as follows: 100, blower; 110, air inlet pipe; 111, first pipe section; 112, second pipe section; 113, air outlet pipe section; 200, contact oxidation tank; 210, tank body; 220, buffer cylinder; 221, water outlet; 222, water inlet pipe; 223, water pump; 230, packing layer; 240, drainage trough; 241, drainage outlet; 242, notch; 250, mounting bracket; 251, load-bearing rod; 252, mounting groove. Detailed Implementation

[0015] The present disclosure will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present disclosure may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure more complete and to fully convey the concept of the present disclosure to those skilled in the art.

[0016] In the description of this disclosure, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0017] like Figures 1-4As shown, the wastewater treatment phosphorus removal mechanism of this embodiment includes a blower 100 and several contact oxidation tanks 200 distributed around the blower 100. The contact oxidation tank 200 includes a circular tank body 210, a buffer cylinder 220 erected at the center of the tank body 210, several annular packing layers 230 spaced around the buffer cylinder 220, and a drainage trough 240 disposed at the bottom of the inner side of the tank body 210. The blower 100 has an air outlet and different tank bodies 210 are connected to an air inlet pipe 110; the drainage trough 240 has a drain outlet 241 on the outside; the buffer cylinder 220 has a water outlet 221 at the bottom and a water inlet pipe 222 inside it. One end of the water inlet pipe 222 is located inside the water inlet pipe 222, and the other end extends to the outside of the tank body 210 and is equipped with a water pump 223. One of the water pumps 223 receives the sewage to be treated through the outside of the pipe, and the other water pumps 223 are connected to the drain outlets 241 of adjacent contact oxidation tanks 200 in sequence to connect several contact oxidation tanks 200 in series. In use, the wastewater treatment phosphorus removal unit is mainly a key section of the entire wastewater treatment process, not just a treatment section. After the wastewater from the previous process enters the first contact oxidation tank 200, it comes out from the drain outlet 241 and is pumped through the pipeline to the next contact oxidation tank 200. This process is repeated in sequence, and finally the wastewater is discharged from the last contact oxidation tank 200 and enters the next section of the wastewater treatment process.

[0018] The drainage trough 240 has recesses 242 on its inner wall top to facilitate the entry of wastewater treated by the packing layer 230 into the drainage trough 240. Obviously, the packing layer 230 can use the packing material commonly used in contact oxidation tanks in terms of composition and structure, which will not be elaborated upon here. The contact oxidation tank 200 also includes a mounting frame 250, which includes several load-bearing rods 251 spanning the top of the tank body 210 and several mounting slots 252 with openings facing the bottom of the load-bearing rods 251. The mounting slots 252 are all annular and distributed around the buffer cylinder 220. The diameters of the mounting slots 252 are different, and the upper end of the packing layer 230 is fixed within the opening of the mounting slot 252. The mounting frame 250 mainly serves as a support structure for hanging the packing layer 230 within the tank, and needs to have a certain strength to ensure overall stability.

[0019] The air inlet pipe 110 includes a first pipe section 111 extending from the air outlet of the blower 100 to the top of the contact oxidation tank 200, a second pipe section 112 extending from the end of the first pipe section 111 into the bottom of the buffer cylinder 220, and several air outlet pipe sections 113 radially distributed with the lower end of the second pipe section 112 as the center. Air outlet holes are opened on the air outlet pipe sections 113. The air outlet method of the air inlet pipe 110 is bottom aeration, the purpose of which is to obtain sufficient dissolved oxygen and prevent suspended matter in the tank from settling, thereby enhancing the contact between organic matter and microorganisms and dissolved oxygen in the tank, and ensuring that the microorganisms in the tank can oxidize and decompose nitrogen and phosphorus organic matter in the wastewater under conditions of sufficient dissolved oxygen.

[0020] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this disclosure should be within the protection scope of this disclosure.

Claims

1. A wastewater treatment phosphorus removal mechanism, characterized in that, The system includes a blower (100) and several contact oxidation tanks (200) distributed around the blower (100). Each contact oxidation tank (200) includes a circular tank body (210), a buffer cylinder (220) erected at the center of the tank body (210), several annular packing layers (230) spaced apart around the buffer cylinder (220), and a drainage trough (240) located at the bottom of the inner side of the tank body (210). Air inlet pipes (110) are connected to the air outlet of the blower (100) and the interiors of the different tank bodies (210). The drainage trough (240) has an outer... The side is provided with a drain outlet (241); the lower part of the buffer cylinder (220) is provided with a water outlet (221), and there is a water inlet pipe (222) inside it. One end of the water inlet pipe (222) is located inside the water inlet pipe (222), and the other end extends to the outside of the pool body (210) and is equipped with a water pump (223). One of the water pumps (223) receives the sewage to be treated through the outside of the pipe, and the remaining water pumps (223) are connected to the drain outlets (241) of the adjacent contact oxidation tanks (200) in sequence to connect several contact oxidation tanks (200) in series.

2. The wastewater treatment phosphorus removal mechanism according to claim 1, characterized in that, The contact oxidation tank (200) also includes a mounting frame (250), which includes several load-bearing rods (251) spanning the top of the tank body (210) and several mounting grooves (252) with openings facing each other, fixed to the bottom of the load-bearing rods (251). The mounting grooves (252) are all annular grooves and are distributed around the buffer cylinder (220). The diameters of the several mounting grooves (252) are different. The upper end of the packing layer (230) is fixed in the opening of the mounting groove (252).

3. The wastewater treatment phosphorus removal mechanism according to claim 1, characterized in that, The top of the inner wall of the drainage channel (240) is provided with a notch (242).

4. The wastewater treatment phosphorus removal mechanism according to claim 1, characterized in that, The air inlet pipe (110) includes a first pipe section (111) extending from the air outlet of the blower (100) to the top of the contact oxidation tank (200), a second pipe section (112) extending from the end of the first pipe section (111) into the bottom of the buffer cylinder (220), and several air outlet pipe sections (113) radially distributed with the lower end of the second pipe section (112) as the center, and the air outlet pipe sections (113) have air outlet holes.

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