Nitration reaction denitrification treatment tank

Abstract

The utility model discloses a nitrification reaction denitrification treatment tank, and aims to solve the problems that a denitrification device in the prior art is not ideal in denitrification effect, and stable operation and efficient treatment of a nitrification tank cannot be ensured. The device specifically comprises an aeration tank connected to a wastewater tank, a nitrification tank connected to the aeration tank and a denitrification tank connected to the nitrification tank, the denitrification tank is of a closed structure, and a monitoring assembly and a display screen connected with the monitoring assembly are further arranged on the nitrification tank and the denitrification tank respectively; according to the device, the independent nitrification tank and denitrification tank are arranged, so that proper survival conditions can be provided for nitrifying bacteria and denitrifying bacteria in the device respectively, the conversion efficiency of nitrogen elements is improved, and the denitrification effect is relatively ideal; and the monitoring assembly and the display screen can monitor the environment condition in the tank in real time, so that the environment in the tank is always in a reasonable range, and stable operation and efficient treatment of the nitrification tank and the denitrification tank are ensured by the proper environment, so that the denitrification effect of the device is relatively good.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a nitrification reaction denitrification treatment tank. Background Art

[0002] Nitrogen is an essential nutrient element for organisms. However, excessive nitrogen can cause water eutrophication, trigger massive algal blooms, lead to water quality deterioration, affect the aquatic ecosystem, and even threaten human health. In real life, the main nitrogen pollutants include ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen. In traditional denitrification processes, people usually use physical ion exchange technology or membrane separation technology. However, such methods have high energy consumption and high costs and are difficult to treat large-scale wastewater. In addition, some people use chemical precipitation methods and redox reactions for denitrification. However, such chemical methods may cause secondary pollution and often result in poor denitrification effects.

[0003] Therefore, in the prior art, people usually use biological denitrification technology to denitrify sewage. Its main function is to convert nitrogen compounds in water into harmless nitrogen gas through the action of microorganisms, so as to achieve the purpose of denitrification. This process mainly relies on nitrification and denitrification reactions. Through a series of reactions, nitrogen pollutants in sewage can be effectively removed. Compared with traditional denitrification processes, biological denitrification mainly relies on the action of microorganisms, reducing the use of chemical agents and the risk of secondary pollution. Moreover, compared with physical and chemical methods, biological denitrification technology has a lower operating cost and is suitable for large-scale applications.

[0004] For example, a patent with the application number CN202220758747.3 discloses a device for denitrifying high-concentration organic sewage. This device realizes the denitrification treatment of sewage through an aeration tank and a denitrification tank. However, the problems of this device are as follows: The nitrification reaction and the denitrification reaction in this device are both carried out in a single denitrification tank. Since the conditions for the nitrification reaction and the denitrification reaction are different, and denitrifying bacteria require organic carbon sources to support their growth and metabolic activities, this device cannot meet the above conditions and easily leads to the sewage being difficult to achieve the ideal denitrification effect. Moreover, this device does not have monitoring components and cannot judge whether the temperature, pH value, and dissolved oxygen concentration in the denitrification tank meet the nitrification tank standards. Therefore, it is impossible to ensure the stable operation and efficient treatment of the nitrification tank. To sum up, there is an urgent need for a new type of denitrification device to solve the above problems.

[0005] The information disclosed in this background art section is only used to deepen the understanding of the background art of the present disclosure and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art. Summary of the Utility Model

[0006] In view of at least one of the above technical problems, the present disclosure provides a nitrification reaction denitrification treatment tank, aiming to solve the problems of unsatisfactory denitrification effect of the existing denitrification device and inability to ensure the stable operation and efficient treatment of the nitrification tank.

[0007] According to one aspect of the present disclosure, there is provided a nitrification reaction denitrification treatment tank, including an aeration tank connected to a wastewater tank, further including a nitrification tank connected to the aeration tank and a denitrification tank connected to the nitrification tank. A first water inlet pipe for connecting to the wastewater tank is further provided on the aeration tank;

[0008] A first water pump is provided between the nitrification tank and the aeration tank. A first water outlet pipe extending into the aeration tank and a second water inlet pipe extending into the nitrification tank are respectively connected to the first water pump;

[0009] A second water pump is provided between the denitrification tank and the nitrification tank. A second water outlet pipe extending into the nitrification tank and a third water inlet pipe extending into the denitrification tank are respectively connected to the second water pump. The denitrification tank is of a closed structure.

[0010] In some embodiments of the present disclosure, the aeration tank includes an air distribution pipe installed therein, a braking air source connected to the air distribution pipe and fixed outside the aeration tank, and a first turntable provided at its bottom. The air distribution pipe is fixed parallel to the bottom surface of the aeration tank, and a plurality of aeration ports for blowing air are further provided on the air distribution pipe.

[0011] In some embodiments of the present disclosure, the nitrification tank includes a first temperature control water pipe installed at the bottom of the nitrification tank, a packing component installed in the nitrification tank at a certain angle, and a first monitoring component installed on the inner side wall of the nitrification tank for monitoring the internal environment of the nitrification tank.

[0012] In some embodiments of the present disclosure, the first monitoring component includes a first temperature sensor for monitoring the temperature in the nitrification tank, a first oxygen monitoring head for monitoring the oxygen content in the nitrification tank, and a first pH monitoring head for monitoring the pH value in the nitrification tank.

[0013] In some embodiments of the present disclosure, a first display screen for displaying data and connected to the first monitoring component and a first temperature control water tank connected to the first temperature control water pipe are further provided outside the nitrification tank. A first temperature control compressor for heating or cooling is further installed on the first temperature control water tank.

[0014] In some embodiments of the present disclosure, the denitrification tank includes a second temperature control water pipe provided on its inner bottom surface, a second turntable installed on its inner bottom surface, and a second monitoring component installed on the inner side wall of the denitrification tank for monitoring its internal environment.

[0015] In some embodiments of the present disclosure, a nitrogen gas tank for inputting nitrogen gas, a second display screen for displaying data and connected to the second monitoring component, and a second temperature control water tank connected to the second temperature control water pipe are further installed on the outer side surface of the denitrification tank.

[0016] In some embodiments of the present disclosure, a feeding port, a feeding cover for sealing provided on the feeding port, a methanol tank for inputting organic carbon source into the denitrification tank, and an air outlet for cooperating with the nitrogen gas tank to remove oxygen are further provided on the upper plane of the outer part of the denitrification tank.

[0017] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0018] 1. The relatively independent nitrification tank and denitrification tank provided in the device of the present application can set different environmental parameters to meet the different reaction conditions of nitrification reaction and denitrification reaction respectively, provide aerobic living conditions for nitrifying bacteria therein, provide anoxic living conditions for denitrifying bacteria and provide organic carbon source, improve the conversion efficiency of nitrogen element, and make the denitrification effect of the device of the present application relatively ideal.

[0019] 2. The device of the present application is also equipped with a monitoring component and a display screen cooperating therewith, which can monitor the environmental conditions in the tank in real time. The staff can judge the environmental conditions in the tank according to the parameters displayed on the display screen and formulate corresponding control plans, so that the temperature, pH value, and dissolved oxygen concentration in the tank are always within a reasonable range. The suitable environment ensures the stable operation and efficient treatment of the nitrification tank and the denitrification tank, and further makes the denitrification effect of this device better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the nitrification reaction denitrification treatment tank in the present utility model;

[0021] Figure 2 is a top view of the nitrification reaction denitrification treatment tank in the present utility model;

[0022] Figure 3 is a front view of the nitrification reaction denitrification treatment tank in the present utility model;

[0023] Figure 4 is a partial sectional front view of the nitrification reaction denitrification treatment tank in the present utility model;

[0024] Figure 5 is a partial sectional view of the nitrification reaction denitrification treatment tank in the present utility model;

[0025] Figure 6 is Figure 5 the enlarged schematic view of part A in

[0026] Figure 7It is a partial cross-sectional view of the nitrification tank in the present utility model;

[0027] Figure 8 It is a partial cross-sectional view of the denitrification tank in the present utility model.

[0028] In the above figures, 1. Aeration tank; 11. Aeration pipe; 111. Aeration port; 12. Braking air source; 13. First water inlet pipe; 14. First water outlet pipe; 15. First turntable; 151. First rotating tooth;

[0029] 2. Nitrification tank; 21. First temperature control water pipe; 211. First temperature control water tank; 212. First temperature control compressor; 22. Packing assembly; 221. Packing ball; 222. Pulling rope; 23. Second water inlet pipe; 24. First water pump; 25. Second water pump; 26. Second water outlet pipe; 27. First monitoring assembly; 271. First temperature sensor; 272. First oxygen monitoring head; 273. First PH monitoring head; 28. First display screen; 281. First temperature display screen; 282. First oxygen display screen; 283. First PH display screen;

[0030] 3. Denitrification tank; 31. Third water inlet pipe; 32. Feeding cover; 33. Methanol tank; 331. Carbon source input pipe; 34. Nitrogen tank; 35. Air outlet; 36. Second temperature control water pipe; 361. Second temperature control water tank; 362. Second temperature control compressor; 37. Second turntable; 371. Second rotating tooth; 38. Second monitoring assembly; 381. Second temperature sensor; 382. Second oxygen monitoring head; 383. Second PH monitoring head; 39. Second display screen; 391. Second temperature display screen; 392. Second oxygen display screen; 393. Second PH display screen. Detailed implementation manners

[0031] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. The "first", "second", etc. involved in the present application are used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" involved in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0032] Embodiments of the present application provide a nitrification reaction denitrification treatment tank, which solves the problems of unsatisfactory denitrification effect of the existing denitrification device and inability to ensure the stable operation and efficient treatment of the nitrification tank. To better understand the technical solutions of the present application, the above technical solutions will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0033] This example discloses a nitrification reaction denitrification treatment tank. Refer to Figures 1 to 8 , specifically including an aeration tank 1 connected to a wastewater tank, further including a nitrification tank 2 connected to the aeration tank 1 and a denitrification tank 3 connected to the nitrification tank 2. A first water inlet pipe 13 for connecting to the wastewater tank is also provided on the aeration tank 1; a first water pump 24 is provided between the nitrification tank 2 and the aeration tank 1. A first water outlet pipe 14 extending into the aeration tank 1 and a second water inlet pipe 23 extending into the nitrification tank 2 are respectively connected to the first water pump 24; a second water pump 25 is provided between the denitrification tank 3 and the nitrification tank 2. A second water outlet pipe 26 extending into the nitrification tank 2 and a third water inlet pipe 31 extending into the denitrification tank 3 are respectively connected to the second water pump 25. The denitrification tank 3 is of a closed structure; the relatively independent nitrification tank 2 and denitrification tank 3 provided in the device of the present application can set different environmental parameters to meet the different reaction conditions of the nitrification reaction and the denitrification reaction respectively, provide suitable living conditions for the nitrifying bacteria and denitrifying bacteria therein, improve the conversion efficiency of nitrogen elements, and make the denitrification effect of the device of the present application relatively ideal.

[0034] The aeration tank 1 includes an air diffuser pipe 11 installed therein, a braking air source 12 connected to the air diffuser pipe 11 and fixed outside the aeration tank 1, and a first turntable 15 provided at its bottom. A first gear 151 is also provided on the first turntable 15. The air diffuser pipe 11 is fixed parallel to the bottom surface of the aeration tank 1 below. A plurality of aeration ports 111 for blowing air are also provided on the air diffuser pipe 11. Blowing air through the aeration ports 111 and stirring the sewage in the tank by the first turntable 15 can effectively increase the dissolved oxygen concentration in the sewage.

[0035] The nitrification tank 2 includes a first temperature control water pipe 21 installed at the bottom of the nitrification tank 2, and a filler assembly 22 installed in the nitrification tank 2 at a certain angle. The filler assembly 22 includes a pulling rope 222 horizontally connected in the nitrification tank 2 and filler balls 221 fixedly arranged on the pulling rope 222 in a penetrating manner; a first monitoring assembly 27 for monitoring the environment inside the nitrification tank 2 is also installed on the inner side wall of the nitrification tank 2. The first monitoring assembly 27 includes a first temperature sensor 271 for monitoring the temperature inside the nitrification tank 2, a first oxygen monitoring head 272 for monitoring the oxygen content inside the nitrification tank 2, and a first pH monitoring head 273 for monitoring the pH value inside the nitrification tank 2. A first display screen 28 for displaying data and connected to the first monitoring assembly 27 and a first temperature control water tank 211 connected to the first temperature control water pipe 21 are also provided outside the nitrification tank 2. A first temperature control compressor 212 for heating or cooling is also installed on the first temperature control water tank 211. The first display screen 28 includes a first temperature display screen 281 connected to the first temperature sensor 271, a first oxygen display screen 282 connected to the first oxygen monitoring head 272, and a first pH display screen 283 connected to the first pH monitoring head 273.

[0036] The denitrification tank 3 includes a second temperature control water pipe 36 provided on its inner bottom surface, a second turntable 37 installed on its inner bottom surface, and a second monitoring component 38 installed on the inner side wall of the denitrification tank 3 for monitoring its internal environment. A second rotating tooth 371 is also provided on the second turntable 37. The second monitoring component 38 specifically includes a second temperature sensor 381 for monitoring the temperature in the denitrification tank 3, a second oxygen monitoring head 382 for monitoring the oxygen content in the denitrification tank 3, and a second pH monitoring head 383 for monitoring the pH value in the denitrification tank 3. A nitrogen tank 34 for inputting nitrogen, a second display screen 39 connected to the second monitoring component 38 for displaying data, and a second temperature control water tank 361 connected to the second temperature control water pipe 36 are also installed on the outer side surface of the denitrification tank 3. A second temperature control compressor 362 for heating or cooling is further installed on the second temperature control water tank 361. The second display screen 39 includes a second temperature display screen 391 connected to the second temperature sensor 381, a second oxygen display screen 392 connected to the second oxygen monitoring head 382, and a second pH display screen 393 connected to the second pH monitoring head 383. The monitoring components installed in the device of the present application and the display screen cooperating therewith can monitor the environmental conditions in the tank in real time. The staff can formulate a control plan according to the environmental parameters displayed on the display screen, so that the temperature, pH value, and dissolved oxygen concentration in the tank are always within a reasonable range. The suitable environment ensures the stable operation and efficient treatment of the nitrification tank and the denitrification tank, and further enables the device to have a good denitrification effect. A feeding port, a feeding cover 32 for sealing the feeding port, a methanol tank 33 for inputting organic carbon source into the denitrification tank 3, and an air outlet 35 for cooperating with the nitrogen tank 34 to discharge oxygen are also provided on the outer upper plane of the denitrification tank 3. The methanol tank 33 inputs the organic carbon source into the denitrification tank 3 through a carbon source input pipe 331.

[0037] When implementing the device of the present application, the first water inlet pipe 13 connected to the sewage tank introduces sewage into the aeration tank 1. At this time, the first turntable 15 in the aeration tank 1 rotates to agitate the sewage. Meanwhile, the braking air source 12 operates to fill air into the aeration pipe 11. Oxygen in the air passes through the aeration port 111 and quickly dissolves in the sewage under the continuous movement of the sewage. Then, the oxygen-enriched sewage is sucked in through the first water outlet pipe 14 by the first water pump 24 and flows into the nitrification tank 2 through the second water inlet pipe 23. Nitrifying bacteria in the sewage in the nitrification tank 2 attach to the filler balls 221. At the same time, the staff judges the environment in the tank through the first display screen 28 installed outside the nitrification tank 2 and connected to the first monitoring component 27 in the nitrification tank 2, and ensures that the environment in the nitrification tank 2 is always suitable for the survival of nitrifying bacteria by controlling the first temperature control compressor 212 or adding alkaline or acidic substances into the tank. The nitrifying bacteria oxidize ammonia nitrogen in the sewage in the nitrification tank 2 into nitrite nitrogen, and then further oxidize nitrite nitrogen into nitrate nitrogen. This process is usually completed by two types of bacteria, namely nitrite bacteria and nitrifying bacteria. Then, the nitrified sewage is sucked in through the second water outlet pipe 26 by the second water pump 25 and flows into the denitrification tank 3 through the third water inlet pipe 31. At this time, the nitrogen gas tank 34 installed on the denitrification tank 3 continuously fills nitrogen gas into the tank, and the nitrogen gas discharges the oxygen in the tank through the air outlet 35, thereby forming a sealed anoxic environment, which is more suitable for the survival of denitrifying bacteria. Since an organic carbon source is required to support the growth and metabolic activities of denitrifying bacteria, and denitrifying bacteria use the organic carbon source as an electron donor to reduce nitrite nitrogen and nitrate nitrogen to nitrogen gas, the methanol tank 33 installed on the denitrification tank 3 can effectively provide an organic carbon source for the denitrification tank 3, and through the cooperation of the second turntable 37 in the denitrification tank 3, the dissolution of the organic carbon source is accelerated, thereby enabling denitrifying bacteria to more effectively reduce nitrogen elements and achieving better denitrification effect. During this process, the staff judges the environment in the tank according to the parameters displayed on the second display screen 39, and ensures that the environment of the denitrification tank 3 is always suitable for the survival of denitrifying bacteria by controlling the second temperature control compressor 362 or opening the feeding cover 32 to add alkaline or acidic substances into it. Finally, the reduced nitrogen gas is discharged out of the tank through the air outlet 35. In addition, the rotation of the turntable adopted in this embodiment; the cooperation monitoring and display of the monitoring component and the display screen; the inflation of the nitrogen gas tank, the methanol tank and the braking air source are all prior arts, so they will not be elaborated in the embodiments of the present application.

[0038] Although some preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of this application and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A nitrification denitrification treatment tank, comprising an aeration tank (1) connected to a wastewater tank, characterized in that: It also includes a nitrification tank (2) connected to the aeration tank (1) and a denitrification tank (3) connected to the nitrification tank (2), and the aeration tank (1) is also provided with a first water inlet pipe (13) for connecting to a wastewater tank; A first water pump (24) is provided between the nitrification tank (2) and the aeration tank (1), and the first water pump (24) is respectively connected to a first water outlet pipe (14) extending into the aeration tank (1) and a second water inlet pipe (23) extending into the nitrification tank (2); A second water pump (25) is provided between the denitrification tank (3) and the nitrification tank (2), and a second water outlet pipe (26) extending into the nitrification tank (2) and a third water inlet pipe (31) extending into the denitrification tank (3) are respectively connected to the second water pump (25); the denitrification tank (3) is a closed structure.

2. The nitrification denitrification treatment pool according to claim 1, characterized in that: The aeration tank (1) comprises an aeration pipe (11) installed therein, a braking air source (12) connected to the aeration pipe (11) and fixed outside the aeration tank (1), and a first rotating disk (15) arranged at the bottom thereof. The aeration pipe (11) is fixed below the aeration pipe (11) parallel to the bottom surface of the aeration tank (1), and a plurality of aeration ports (111) for blowing air are also arranged on the aeration pipe (11).

3. The nitrification denitrification treatment pool according to claim 2, characterized in that: The nitrification tank (2) comprises a first temperature-controlled water pipe (21) installed at the bottom of the nitrification tank (2), a filler assembly (22) installed in the nitrification tank (2) at a certain angle, and a first monitoring assembly (27) for monitoring the internal environment of the nitrification tank (2) installed on the inner wall of the nitrification tank (2).

4. The nitrification denitrification treatment pool according to claim 3, characterized in that: The first monitoring component (27) comprises a first temperature sensor (271) for monitoring the temperature in the nitrification tank (2), a first oxygen monitoring head (272) for monitoring the oxygen content in the nitrification tank (2), and a first pH monitoring head (273) for monitoring the pH value in the nitrification tank (2).

5. The nitrification denitrification treatment pool according to claim 4, characterized in that: The outside of the nitrification pool (2) is also provided with a first display screen (28) for displaying data and connected to the first monitoring component (27) and a first temperature-controlled water tank (211) connected to the first temperature-controlled water pipe (21), and a first temperature-controlled compressor (212) for heating or cooling is also installed on the first temperature-controlled water tank (211).

6. The nitrification denitrification treatment pool according to claim 5, characterized in that: The denitrification tank (3) comprises a second temperature-controlled water pipe (36) arranged on its inner bottom surface, a second turntable (37) installed on its inner bottom surface, and a second monitoring component (38) installed on the inner side wall of the denitrification tank (3) for monitoring its internal environment.

7. The nitrification denitrification treatment pool according to claim 6, characterized in that: A nitrogen tank (34) for inputting nitrogen, a second display screen (39) for displaying data and connected to a second monitoring component (38), and a second temperature-controlled water tank (361) connected to a second temperature-controlled water pipe (36) are also installed on the outer side of the denitrification pool (3).

8. The nitrification denitrification treatment pool according to claim 7, characterized in that: The outer upper plane of the denitrification tank (3) is also provided with a feed port and a feed cover (32) provided on the feed port for sealing, a methanol tank (33) for inputting an organic carbon source into the denitrification tank (3), and an outlet (35) for exhausting oxygen in cooperation with a nitrogen tank (34).

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