Denitrification sewage nitrogen and phosphorus removal device

Abstract

The utility model provides a denitrification sewage nitrogen and phosphorus removal device, which belongs to the technical field of sewage treatment equipment and comprises a reaction cylinder formed by stacking a plurality of cylinder sections, a top cover is arranged at the top of the reaction cylinder, a mounting hole is formed in the circle center of the top cover, and an auxiliary nitrogen removal mechanism is arranged on the mounting hole. The auxiliary denitrification mechanism comprises a rotating shaft with a hollow structure, an air pump and a motor, the output end of the air pump is provided with a connecting pipe, the connecting pipe is connected with the upper end of the rotating shaft, the lower end of the rotating shaft is provided with a middle block, each connector of the middle block is provided with a guide pipe, and the lower side of each guide pipe is provided with a plurality of air nozzles. According to the sewage denitrification device, nitrogen generated in sewage can be promoted to escape from water quickly in the denitrification process, meanwhile, the nitrogen separated from the water surface is prevented from being dissolved into liquid again, the sewage denitrification efficiency is effectively improved, the requirements of subsequent treatment steps are reduced, the treatment cost is reduced, and the sewage denitrification device has a certain practical value.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of sewage treatment equipment, specifically is a denitrification sewage nitrogen and phosphorus removal device. BACKGROUND

[0002] Sewage treatment equipment refers to the general term for various mechanical, electrical and chemical equipment used for treating and purifying sewage. These devices can be used alone or combined into a complete sewage treatment system to remove pollutants in sewage, protect the environment and meet discharge standards. The selection and configuration of sewage treatment equipment depend on the nature of the sewage, treatment goals, scale and local environmental protection requirements. Through reasonable design and operation, sewage treatment equipment can effectively reduce pollutant emissions and protect water resources and the environment.

[0003] The denitrification sewage nitrogen and phosphorus removal technology used in sewage treatment equipment is mainly used to remove nitrogen and phosphorus in sewage. Microorganisms use denitrification to reduce nitrate or nitrite to nitrogen gas. During the denitrification process, the release of phosphorus can be promoted by adjusting the pH value and oxidation-reduction potential. Subsequently, through the action of microorganisms, the phosphorus in the sewage can be reabsorbed to form biological polyphosphorus. Finally, phosphorus removal is achieved through sludge discharge. No additional organic carbon source is needed, thereby reducing operating costs and sludge production. During the denitrification process, nitrogen gas may dissolve in water again due to the pressure of the liquid surface, the temperature of the liquid and the degree of agitation (the lower the water temperature and the lower the degree of agitation, the higher the solubility of gas in water), which is called gas redissolution, reducing the efficiency of nitrogen removal. CONTENT OF THE UTILITY MODEL

[0004] The utility model technical scheme provides a solution significantly different from the prior art to solve the technical problem of the over-simplified prior art solution. Specifically, the utility model mainly provides a denitrification sewage nitrogen and phosphorus removal device to solve the technical problem of nitrogen gas dissolving in water again during the denitrification process due to the pressure of the liquid surface, the temperature of the liquid and the degree of agitation, which reduces the efficiency of nitrogen removal.

[0005] The utility model solves the above technical problem by using the following technical scheme:

[0006] A denitrification wastewater nitrogen and phosphorus removal device includes a reaction cylinder composed of multiple stacked sections. A top cover is provided on the top of the reaction cylinder, and a mounting hole is provided at the center of the top cover. An auxiliary denitrification mechanism is provided on the mounting hole. The auxiliary denitrification mechanism includes a hollow rotating shaft, an air pump, and a motor. The rotating shaft is located at the mounting hole, and the air pump and motor are located on the upper side of the top cover. A connecting pipe is provided at the output end of the air pump, and the connecting pipe is connected to the upper end of the rotating shaft. A middle block is provided at the lower end of the rotating shaft, and a conduit is provided at each interface of the middle block. Multiple air nozzles are provided on the lower side of each conduit.

[0007] Furthermore, a support frame is provided at the bottom of the inner cavity of the rotating shaft, and an electric heating rod is provided on the support frame.

[0008] Furthermore, the output end of the motor is provided with a first gear, which meshes with a second gear, and the second gear is sleeved on the rotating shaft.

[0009] Furthermore, a first shaft seal is provided in the gap between the rotating shaft and the mounting hole.

[0010] Furthermore, a second shaft seal is provided between the upper end of the inner cavity of the rotating shaft and the connecting pipe.

[0011] Furthermore, the top cover is also provided with an exhaust port, and an exhaust fan is installed on the exhaust port by bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, through its top cover, rotating shaft, air pump, connecting pipe, motor, first shaft seal, intermediate block, conduit, air nozzle, second shaft seal, first gear, and second gear, achieves water agitation during denitrification, reducing nitrogen solubility in water. Simultaneously, it regulates air pressure to facilitate the rapid escape of nitrogen generated in wastewater, minimizing nitrogen redissolution. This effectively improves wastewater denitrification efficiency, reduces the need for subsequent treatment steps, lowers overall treatment costs, prevents eutrophication, and meets wastewater discharge standards. Furthermore, the cooperation between the support frame and electric heating rod increases water temperature, further reducing nitrogen solubility. With the assistance of an exhaust fan, it minimizes the re-dissolution of nitrogen that has already escaped the water surface. The structure is stable, easy to install, and possesses practical value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the auxiliary denitrification mechanism of this utility model.

[0017] Figure 3 For the present utility model Figure 2 Enlarged structural diagram of area A.

[0018] In the diagram: 1. Reaction cylinder; 2. Top cover; 21. Mounting hole; 22. Exhaust port; 3. Auxiliary denitrification mechanism; 31. Rotating shaft; 32. Air pump; 321. Connecting pipe; 33. Motor; 34. First shaft seal; 35. Intermediate block; 36. Conduit; 361. Air nozzle; 37. Second shaft seal; 38. First gear; 381. Second gear; 39. Support frame; 391. Electric heating rod; 4. Exhaust fan. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to the appendix carefully. Figures 1-3A denitrification wastewater nitrogen and phosphorus removal device includes a reaction cylinder 1 formed by stacking multiple cylindrical sections. The top of the reaction cylinder 1 is provided with a top cover 2. The center of the top cover 2 is provided with a mounting hole 21. An auxiliary denitrification mechanism 3 is provided on the mounting hole 21. The auxiliary denitrification mechanism 3 includes a hollow rotating shaft 31, an air pump 32, and a motor 33. The rotating shaft 31 is located at the mounting hole 21. The air pump 32 and the motor 33 are located on the upper side of the top cover 2. The output end of the air pump 32 is provided with a connecting pipe 321, which is connected to the upper end of the rotating shaft 31. The lower end of the rotating shaft 31 is provided with a middle block 35. Each interface of the middle block 35 is provided with a conduit 36. Multiple air nozzles 361 are provided on the lower side of each conduit 36.

[0023] The above structure enables nitrogen generated in wastewater to escape rapidly from the water during the denitrification process, while reducing the re-dissolution of nitrogen that has already escaped from the water surface into the liquid. This effectively improves the efficiency of wastewater denitrification, reduces the need for subsequent treatment steps, thereby lowering the overall treatment cost, preventing eutrophication of water bodies, meeting wastewater discharge standards, and providing structural stability and ease of installation, thus possessing practical value.

[0024] The specific operation is as follows: During the denitrification process, the air pump 32 is turned on, and the high-speed flowing gas enters the inner cavity of the rotating shaft 31 through the connecting pipe 321. Then, the heat generated by the electric heating rod 391 is sprayed out from the nozzle 361 of the conduit 36 ​​to heat the liquid and reduce the solubility of nitrogen in the liquid. At the same time, the pressure is controlled to regulate the air pressure and accelerate the escape of nitrogen from the water. Then, the motor 33 is turned on, and the first gear 38 drives the second gear 381 to rotate. Then, the second gear 381 drives the rotating shaft 31 to rotate, which in turn drives the conduit 36 ​​to stir the liquid, further reducing the solubility of nitrogen in the liquid. Then, the exhaust fan 4 is started to quickly discharge the nitrogen at the top of the reaction cylinder 1 to avoid redissolution and improve the denitrification efficiency.

[0025] Please refer to the appendix carefully. Figure 2 and attached Figure 3The bottom of the inner cavity of the rotating shaft 31 is provided with a support frame 39, and an electric heating rod 391 is provided on the support frame 39. The electric heating rod 391 enables the regulation of liquid temperature. When nitrogen gas is generated, the liquid temperature can be changed to reduce the solubility of nitrogen in water. The output end of the motor 33 is provided with a first gear 38, which meshes with a second gear 381. The second gear 381 is sleeved on the rotating shaft 31. Through the interaction between the motor 33, the first gear 38, and the second gear 381, the rotating shaft 31 is driven. A first shaft seal 34 is provided in the gap between the mounting holes 21. The first shaft seal 34 prevents air leakage in the gap between the rotating shaft 31 and the mounting holes 21. A second shaft seal 37 is provided between the upper end of the inner cavity of the rotating shaft 31 and the connecting pipe 321. The second shaft seal 37 enables the rotational connection between the connecting pipe 321 and the rotating shaft 31 and prevents air leakage at the connection. An exhaust port 22 is also provided on the top cover 2. An exhaust fan 4 is installed on the exhaust port 22 by bolts. The exhaust fan 4 enables the rapid discharge of nitrogen gas from the top of the reaction cylinder 1, thereby improving the denitrification efficiency.

[0026] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A device for denitrification and phosphorus removal of sewage, comprising a reaction cylinder (1) stacked by multiple cylinder segments, a top cover (2) is arranged at the top of the reaction cylinder (1), characterized in that, The center position of the top cover (2) is provided with a mounting hole (21), the mounting hole (21) is provided with an auxiliary denitrogenation mechanism (3), the auxiliary denitrogenation mechanism (3) comprises a hollow structure of a rotating shaft (31), a gas pump (32) and a motor (33), the rotating shaft (31) is located at the mounting hole (21), the gas pump (32) and the motor (33) are located on the upper side of the top cover (2), the output end of the gas pump (32) is provided with a connecting pipe (321), the connecting pipe (321) is connected with the upper end of the rotating shaft (31), the lower end of the rotating shaft (31) is provided with an intermediate block (35), each interface of the intermediate block (35) is provided with a pipe (36), and the lower side of each pipe (36) is provided with a plurality of air nozzles (361).

2. The device for denitrification and phosphorus removal of sewage according to claim 1, characterized in that, The inner cavity bottom of the rotating shaft (31) is provided with a support frame (39), and the support frame (39) is provided with an electric heating rod (391).

3. The device for denitrification and phosphorus removal of sewage according to claim 1, characterized in that, The output end of the motor (33) is provided with a first gear (38), the first gear (38) is engaged with a second gear (381), and the second gear (381) is sleeved on the rotating shaft (31).

4. The device for denitrification and phosphorus removal of sewage according to claim 2, characterized in that, The gap between the rotating shaft (31) and the mounting hole (21) is provided with a first shaft seal (34).

5. The device for denitrification and phosphorus removal of sewage according to claim 4, characterized in that, The upper end of the inner cavity of the rotating shaft (31) and the connecting pipe (321) are provided with a second shaft seal (37).

6. The device for denitrification and phosphorus removal of sewage according to claim 1, characterized in that, The top cover (2) is also provided with an exhaust port (22), and the exhaust port (22) is provided with an exhaust fan (4) through bolts.

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