Industrial wastewater denitrification equipment
By designing an industrial wastewater nitrogen removal equipment including a treatment tank, a nitrogen removal device and related components, chlorine or sodium hypochlorite promotes the oxidation of ammonia nitrogen into nitrogen, and through shear breaking stirring of oblique stirring blocks, the problem of poor nitrogen removal effect in high-salt wastewater is solved, and efficient nitrogen utilization and nitrogen removal efficiency are achieved.
Patent Information
- Application Number
- CN202423133230.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Active microorganisms in industrial high-salt wastewater are prone to dehydration and inactivation, resulting in extremely poor denitrification and inability to effectively utilize the remaining gas in production, resulting in waste of nitrogen.
An industrial wastewater nitrogen removal equipment is designed, including treatment tanks, nitrogen removal devices and related valves, check valves and other components. By adding chlorine or sodium hypochlorite to the treatment tank, the oxidation of ammonia nitrogen into nitrogen is promoted, and a shear breaking stirring is formed using an oblique stirring block to ensure that the nitrogen compound in the wastewater is hydrolyzed into ammonia nitrogen. Ammonia nitrogen is discharged through the nitrogen pipe, and the remaining gas is separated through the separation membrane and discharged, and the nitrogen removal efficiency can be improved through secondary nitrogen removal.
It effectively solves the problem of poor nitrogen removal effect in high-salt wastewater, improves nitrogen removal efficiency, and reduces nitrogen waste by effectively utilizing residual gas.
Smart Images
Figure CN222556693U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of industrial wastewater treatment, and specifically relates to industrial wastewater denitrification equipment. Background Art
[0002] Ammonia nitrogen, then through chlorination and biochemical processes, the biological inhibition of high-salt wastewater is high, especially when the salt content is higher than 1%, the active microorganisms in the biochemical system are prone to dehydration and inactivation, the denitrification effect is extremely poor, and the residual gas in production cannot be effectively utilized, resulting in nitrogen waste. Therefore, it is urgent to develop a salt-tolerant process with physicochemical reaction properties to effectively remove total nitrogen and solve the denitrification problem of industrial high-salt wastewater. Utility Model Content
[0003] In view of this, the purpose of the utility model is to provide an industrial wastewater denitrification device to solve the problem that active microorganisms in the biochemical system are prone to dehydration and inactivation, the denitrification effect is extremely poor, and the residual gas in production cannot be effectively utilized, resulting in nitrogen waste.
[0004] In order to achieve the above object, the utility model provides the following technical solutions:
[0005] The utility model discloses an industrial wastewater denitrification device, comprising a treatment tank, a sewage pipe is connected to the side of the treatment tank, a denitrification device is connected in the treatment tank, and the denitrification device comprises: a motor, a rotating rod, a stirring block, an oblique groove, a separation membrane, a connecting plate and a connecting rod, the motor is fixedly connected to the upper part of the treatment tank, the lower end of the motor is fixedly connected to the rotating rod, the oblique groove is fixedly connected to the inner side of the treatment tank, the upper end of the oblique groove is connected to the separation membrane, the middle part of the separation membrane is connected to the connecting plate, the connecting rod is located between the connecting plate and the treatment tank, the rotating rod passes through the connecting plate and is rotatably connected to the connecting plate, the lower end of the rotating rod is fixedly connected to the stirring block, the upper part of the treatment tank is connected to an air outlet, the side of the treatment tank is connected to a nitrogen pipe, the side of the treatment tank is connected to an air inlet, and the bottom of the treatment tank is connected to a drain.
[0006] Furthermore, the sewage pipe and the drain outlet are each connected to a valve.
[0007] Furthermore, the gas outlet, the nitrogen pipe and the gas inlet are each connected to a one-way valve.
[0008] Furthermore, a gas storage tank is connected to the lower side of the nitrogen pipe.
[0009] Furthermore, the stirring block is arranged obliquely, and there are multiple stirring blocks that are evenly arranged on the outside of the rotating rod.
[0010] The beneficial effects of the utility model are:
[0011] The utility model discloses an industrial wastewater denitrification device. Chlorine or sodium hypochlorite is added into a treatment tank through an air inlet until a certain critical point is reached, so that ammonia nitrogen is directly oxidized into nitrogen in a chemical process, thereby denitrifying the wastewater. Since the nitrogen-containing compounds in the wastewater are in various forms, it is impossible to completely denitrify by adding a single chemical material. Then, a shear-type baffled stirring is formed by rotating an oblique stirring block, so that an oxygen-deficient conditioning zone is formed in the treatment tank to ensure that nitrogen-containing compounds such as protein and fatty acids in the wastewater are hydrolyzed into ammonia nitrogen. Since ammonia nitrogen is an inert gas, it is discharged from a nitrogen pipe on the side of the treatment tank. The residual gas generated by the stirring is separated by a separation membrane and then discharged from the air outlet and collected. The residual gas can also be collected and then enter the treatment tank again through the air inlet for secondary denitrification, thereby ensuring the denitrification efficiency.
[0012] Other advantages, objectives and features of the utility model will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the utility model is described with the following drawings:
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a partial view of the separation membrane and other components of the utility model;
[0016] Figure 3 This is a partial view of the stirring block and other components of the utility model.
[0017] The markings in the attached figure are as follows: 1. treatment tank; 2. sewage pipe; 3. nitrogen pipe; 4. air outlet; 5. one-way valve; 6. air inlet; 7. denitrification device; 71. motor; 72. rotating rod; 73. connecting plate; 74. connecting rod; 75. separation membrane; 76. oblique groove; 77. stirring block; 8. drain outlet; 9. valve. DETAILED DESCRIPTION
[0018] like Figures 1 to 3As shown, the utility model is an industrial wastewater denitrification equipment, including a treatment tank 1, the side of the treatment tank 1 is connected to a sewage pipe 2, so that the sewage is discharged into the treatment tank 1 through the sewage pipe 2. The treatment tank 1 is connected to a denitrification device 7 for denitrifying the sewage, and the denitrification device 7 includes: a motor 71, a rotating rod 72, a stirring block 77, an oblique groove 76, a separation membrane 75, a connecting plate 73 and a connecting rod 74. The motor 71 is fixedly connected to the upper part of the treatment tank 1, and the lower end of the motor 71 is fixedly connected to the rotating rod 72, and the motor 71 drives the rotating rod 72 to rotate. The oblique groove 76 is fixedly connected to the inner side of the treatment tank 1, and the upper end of the oblique groove 76 is connected to the separation membrane 75, and the oblique groove 76 allows the gas to concentrate on the separation membrane 75. The middle part of the separation membrane 75 is connected to the connecting plate 73, and the connecting rod 74 is located between the connecting plate 73 and the treatment tank 1, and the connecting plate 73 and the separation membrane 75 are fixed by the connecting rod 74. The rotating rod 72 passes through the connecting plate 73 and is rotatably connected to the connecting plate 73. The lower end of the rotating rod 72 is fixedly connected to the stirring block 77. The rotating rod 72 drives the stirring block 77 to rotate. The stirring block 77 is arranged obliquely. There are multiple stirring blocks 77 and they are evenly arranged outside the rotating rod 72. The oblique stirring block 77 achieves shear-type baffle stirring, which is beneficial to denitrification. The upper part of the treatment tank 1 is connected to the gas outlet 4, and the residual generated by stirring is discharged through the gas outlet 4. The side of the treatment tank 1 is connected to the nitrogen pipe 3, and the lower side of the nitrogen pipe 3 is connected to the gas storage tank 10. Nitrogen enters the gas storage tank 10 through the nitrogen pipe 3. The side of the treatment tank 1 is connected to the air inlet 6, which is convenient for adding gas. The bottom of the treatment tank 1 is connected to the drain 8 to discharge the treated sewage. The sewage pipe 2 and the drain 8 are each connected to a valve 9 to control the discharge of sewage. The gas outlet 4, the nitrogen pipe 3 and the air inlet 6 are each connected to a one-way valve 5 to prevent gas backflow.
[0019] The working process of the above scheme is as follows: the sewage is discharged into the treatment tank 1 through the sewage pipe 2, and chlorine or sodium hypochlorite is added to the air inlet 6 at this time. When a certain critical point is reached in the treatment tank 1, the ammonia nitrogen is directly oxidized into nitrogen by a chemical process, thereby denitrifying the sewage. At the same time, the motor 71 is started to make the rotating rod 72 drive the stirring block 77 to rotate, and the stirring block 77 forms a shear-type baffle stirring to accelerate the denitrification efficiency of the sewage. When the sewage is denitrified, the nitrogen gas approaches the side of the treatment tank 1 and is discharged through the nitrogen pipe 3, while some residual gas enters the air outlet 4 through the separation membrane 75, and the residual gas is collected and added through the air inlet 6 to perform secondary denitrification on the gas. The treated sewage is discharged through the drain 8.
[0020] The above scheme has the following beneficial effects: chlorine or sodium hypochlorite is added into the treatment tank 1 through the air inlet 6 until a certain critical point is reached, so that the ammonia nitrogen is directly oxidized into nitrogen through a chemical process, thereby denitrifying the sewage; and because the nitrogen-containing compounds in the sewage are in various forms, it is impossible to completely denitrify by adding a single chemical material, and then the oblique stirring block 77 is rotated to form a shear-type baffle stirring, so that an anoxic conditioning zone is formed in the treatment tank 1 to ensure that the nitrogen-containing compounds such as proteins and fatty acids in the wastewater are hydrolyzed into ammonia nitrogen. Since ammonia nitrogen is an inert gas, it is discharged from the nitrogen pipe 3 on the side of the treatment tank 1, and the residual gas generated by the stirring is separated by the separation membrane 75 and discharged from the air outlet 4 and collected. The residual gas can also be collected and then enter the treatment tank 1 again through the air inlet 6 for secondary denitrification, thereby ensuring the denitrification efficiency.
[0021] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.
Claims
1. An industrial wastewater denitrification device, characterized in that: The invention comprises a treatment tank (1), the side of the treatment tank (1) is connected to a sewage pipe (2), the inside of the treatment tank (1) is connected to a denitrification device (7), the denitrification device (7) comprises: a motor (71), a rotating rod (72), a stirring block (77), an inclined groove (76), a separation membrane (75), a connecting plate (73) and a connecting rod (74), the motor (71) is fixedly connected to the upper part of the treatment tank (1), the lower end of the motor (71) is fixedly connected to the rotating rod (72), the inclined groove (76) is fixedly connected to the inner side of the treatment tank (1), and the upper end of the inclined groove (76) is fixedly connected to the inner side of the treatment tank (1). The separation membrane (75) is connected, the middle part of the separation membrane (75) is connected to the connecting plate (73), the connecting rod (74) is located between the connecting plate (73) and the processing tank (1), the rotating rod (72) passes through the connecting plate (73) and is rotatably connected to the connecting plate (73), the lower end of the rotating rod (72) is fixedly connected to the stirring block (77), the upper part of the processing tank (1) is connected to an air outlet (4), the side of the processing tank (1) is connected to a nitrogen pipe (3), the side of the processing tank (1) is connected to an air inlet (6), and the bottom of the processing tank (1) is connected to a drain outlet (8).
2. The industrial wastewater denitrification equipment according to claim 1, characterized in that: The sewage pipe (2) and the drain outlet (8) are each connected to a valve (9).
3. The industrial wastewater denitrification equipment according to claim 1, characterized in that: The gas outlet (4), the nitrogen pipe (3) and the gas inlet (6) are each connected to a one-way valve (5).
4. The industrial wastewater denitrification equipment according to claim 1, characterized in that: The lower side of the nitrogen pipe (3) is connected to a gas storage tank (10).
5. The industrial wastewater denitrification equipment according to claim 1, characterized in that: The stirring block (77) is arranged obliquely, and there are a plurality of stirring blocks (77) which are evenly arranged outside the rotating rod (72).