Purification treatment device for perchlorate wastewater
Through the combination of bacterial biochemical reduction-oxidation-precipitation technology and cross-flow structure, the problems of low efficiency and high cost of perchlorate wastewater treatment are solved, low-cost and efficient purification of perchlorate wastewater is achieved, and bacterial decomposition ability and treatment effect are strengthened.
Patent Information
- Application Number
- CN202421847185.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing perchlorate wastewater treatment methods are inefficient, costly, and have secondary pollutants, and lack low-cost and efficient purification and treatment technologies and equipment.
The combination process of bacterial biochemical reduction-oxidation-precipitation is adopted, and the bacterial decomposition ability of perchlorate is strengthened through the connection of the reduction tank, oxidation tank, precipitation tank and clear water tank, combined with the cross-flow structure, reflux circulation and agitator.
The low-cost and efficient purification and treatment of perchlorate wastewater has been achieved, the process is simple, and the treatment efficiency and stability are further improved through temperature control and agitator.
Smart Images
Figure CN223087708U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wastewater treatment equipment, in particular to a perchlorate wastewater purification and treatment device. Background Art
[0002] Perchlorate is a new type of trace pollutant, which has high stability, water solubility and oxidability. It can disrupt the normal metabolism of the human body and affect normal growth and development. According to the extended indicators and limit requirements of the quality of domestic drinking water, the perchlorate in domestic drinking water ≤ 0.07mg / L. At present, the main treatment methods for perchlorate are: anion exchange and adsorbent adsorption, chemical reduction, biochemical method, membrane separation technology, etc. However, there are problems such as low efficiency, high operation cost and secondary pollutants. Providing a low-cost and stable perchlorate wastewater purification and treatment technology and equipment has become an urgent need in this field. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a perchlorate wastewater purification and treatment device with simple structure, low cost and high efficiency.
[0004] To solve the above technical problem, the utility model adopts the following technical solutions:
[0005] A perchlorate wastewater purification and treatment device includes a reduction tank for bacterial biochemical reduction treatment, an oxidation tank for bacterial biochemical oxidation treatment, a sedimentation tank and a clear water tank, and the reduction tank, the oxidation tank, the sedimentation tank and the clear water tank are connected in sequence.
[0006] As a further improvement of the above technical solution: the reduction tank includes a first reduction tank, a second reduction tank and a first partition board arranged between the first reduction tank and the second reduction tank, and the bottoms of the first reduction tank and the second reduction tank are connected.
[0007] As a further improvement of the above technical solution: the oxidation tank includes a first oxidation tank, a second oxidation tank and a second partition board arranged between the first oxidation tank and the second oxidation tank, the second reduction tank is provided with a first overflow pipe, the lower end of the first overflow pipe extends to the bottom of the first oxidation tank, and one side of the second partition board away from the first overflow pipe is disconnected.
[0008] As a further improvement of the above technical solution: the second oxidation tank is provided with a second overflow pipe, the second overflow pipe is arranged opposite to the disconnected side of the second partition board, a water distribution pipe is arranged in the sedimentation tank, and the lower end of the second overflow pipe is connected to the water distribution pipe.
[0009] As a further improvement of the above technical solution: an overflow weir is provided in the sedimentation tank, an overflow hole is provided on the side of the overflow weir close to the clear water tank, the overflow weir and the water distribution pipe are arranged oppositely on both sides of the sedimentation tank, and the height of the overflow weir is greater than that of the water distribution pipe.
[0010] As a further improvement of the above technical solution: a stirrer is provided in the reduction tank.
[0011] As a further improvement of the above technical solution: a heat preservation layer is provided outside the reduction tank.
[0012] As a further improvement of the above technical solution: a first feed port is provided at the upper part of the reduction tank and a first discharge port is provided at the lower part thereof, and a first reflux pipeline is provided between the first discharge port and the first feed port.
[0013] As a further improvement of the above technical solution: a second discharge port is provided at the lower part of the oxidation tank, and a second reflux pipeline is provided between the second discharge port and the first feed port.
[0014] As a further improvement of the above technical solution: inclined plates and inclined tubes are provided in the sedimentation tank, and a conical hopper is provided below the inclined plates and inclined tubes.
[0015] Compared with the prior art, the advantages of the present utility model are as follows:
[0016] The perchlorate wastewater purification treatment device disclosed by the present utility model includes a reduction tank for performing bacterial biochemical reduction treatment, an oxidation tank for performing bacterial biochemical oxidation treatment, a sedimentation tank and a clear water tank. The reduction tank, the oxidation tank, the sedimentation tank and the clear water tank are connected in sequence, and the treatment of perchlorate with low cost and high efficiency can be realized through the combination mode of "bacterial biochemical reduction - bacterial biochemical oxidation - precipitation", and the process is simple.
[0017] Furthermore, by controlling conditions such as the temperature of the reduction tank, the ability of bacteria to decompose perchlorate can be enhanced, and the digestion effect of bacteria on perchlorate can be improved.
[0018] Furthermore, by setting a stirrer, cross flow and the mode of each group of reflux cycles, the treatment efficiency of perchlorate and the stability of the process can be further improved.
[0019] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings
[0020] Figure 1 It is a top view structural schematic diagram of the perchlorate wastewater purification treatment device of the present utility model.
[0021] Figure 2It is the front view structural schematic diagram of the perchlorate wastewater purification and treatment device of the present utility model.
[0022] Each label in the figure represents:
[0023] 1. Reduction tank; 11. First reduction tank; 12. Second reduction tank; 13. First partition board; 14. First overflow pipe; 15. Agitator; 16. Thermal insulation layer; 17. First feed inlet; 18. First discharge outlet; 19. Chemical addition port; 2. Oxidation tank; 21. First oxidation tank; 22. Second oxidation tank; 23. Second partition board; 24. Second overflow pipe; 25. Second discharge outlet; 26. Air inlet; 27. Aeration pipe; 3. Sedimentation tank; 31. Water distribution pipe; 32. Overflow weir; 33. Overflow hole; 34. Inclined plate and inclined tube; 35. Conical hopper; 36. Third discharge outlet; 4. Clear water tank; 41. Water outlet; 51. First filler; 52. Second filler; 6. Louver. Specific embodiments
[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation to the present utility model.
[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.
[0026] In the present utility model, unless otherwise clearly specified and limited, the terms "assembly", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0027] The present utility model will be further described in detail below in conjunction with the specification drawings and specific embodiments.
[0028] Figures 1 to 2 Fig. 1 shows an embodiment of the perchlorate wastewater purification and treatment device of the present utility model. The perchlorate wastewater purification and treatment device of this embodiment includes a reduction tank 1 for performing bacterial biochemical reduction treatment, an oxidation tank 2 for performing bacterial biochemical oxidation treatment, a sedimentation tank 3, and a clear water tank 4. The reduction tank 1, the oxidation tank 2, the sedimentation tank 3, and the clear water tank 4 are connected in sequence.
[0029] The perchlorate wastewater purification and treatment device of this embodiment includes a reduction tank 1 for performing bacterial biochemical reduction treatment, an oxidation tank 2 for performing bacterial biochemical oxidation treatment, a sedimentation tank 3, and a clear water tank 4. The reduction tank 1, the oxidation tank 2, the sedimentation tank 3, and the clear water tank 4 are connected in sequence, and can achieve low-cost and high-efficiency treatment of perchlorate through the combination method of "bacterial biochemical reduction - bacterial biochemical oxidation - precipitation", and the process is simple.
[0030] Furthermore, in this embodiment, the reduction tank 1 includes a first reduction tank 11, a second reduction tank 12, and a first partition plate 13 disposed between the first reduction tank 11 and the second reduction tank 12. The bottoms of the first reduction tank 11 and the second reduction tank 12 are connected, and a cross-flow structure can be formed in the reduction tank 1, thereby extending the wastewater flow path, increasing the residence time, being beneficial to strengthening the ability of bacteria to decompose perchlorate, and improving the digestion effect of bacteria on perchlorate.
[0031] Even further, in this embodiment, the oxidation tank 2 includes a first oxidation tank 21, a second oxidation tank 22, and a second partition plate 23 disposed between the first oxidation tank 21 and the second oxidation tank 22, and a cross-flow structure can be formed inside the oxidation tank 2. The second reduction tank 12 is provided with a first overflow pipe 14, and the lower end of the first overflow pipe 14 extends to the bottom of the first oxidation tank 21. The side of the second partition plate 23 away from the first overflow pipe 14 is disconnected (see specifically Figure 1 , the first overflow pipe 14 is located below the first oxidation tank 21, and the upper side of the second partition plate 23 is disconnected from the inner wall of the oxidation tank 2), and a cross-flow structure can be formed between the second reduction tank 12 and the first oxidation tank 21, thereby extending the wastewater flow path, increasing the residence time, further strengthening the ability of bacteria to decompose perchlorate, and improving the digestion effect of bacteria on perchlorate.
[0032] Even further, in this embodiment, the second oxidation tank 22 is provided with a second overflow pipe 24, and the second overflow pipe 24 is arranged opposite to the disconnected side of the second partition plate 23, which can extend the wastewater flow path in the second oxidation tank 22 and increase the residence time. A water distribution pipe 31 is arranged in the sedimentation tank 3, and the lower end of the second overflow pipe 24 is connected to the water distribution pipe 31, and a cross-flow structure can be formed between the second oxidation tank 22 and the sedimentation tank 3, further strengthening the ability of bacteria to decompose perchlorate and improving the digestion effect of bacteria on perchlorate.
[0033] Furthermore, in this embodiment, an overflow weir 32 is provided in the sedimentation tank 3. An overflow hole 33 is provided on the side of the overflow weir 32 close to the clear water tank 4. The overflow weir 32 and the water distribution pipe 31 are arranged oppositely on both sides of the sedimentation tank 3 (specifically refer to Figure 1 , the water distribution pipe 31 is located at the lower side of the sedimentation tank 3, and the overflow weir 32 is located at the upper side of the sedimentation tank 3), which can extend the residence time of the wastewater in the sedimentation tank 3 and enhance the treatment effect. The height of the overflow weir 32 is greater than the height of the water distribution pipe 31.
[0034] Furthermore, in this embodiment, a stirrer 15 is provided in the reduction tank 1 (specifically, a stirrer 15 is provided in the second reduction tank 12). The stirrer 15 can be intermittently turned on to make the materials in the reduction tank 1 mix evenly, enhance the ability of bacteria to decompose perchlorate, and improve the digestion effect of bacteria on perchlorate. Preferably, a first filler 51 is provided in the reduction tank 1, and the stirrer 15 is located below the first filler 51.
[0035] Furthermore, in this embodiment, a heat preservation layer 16 is provided outside the reduction tank 1. The heat preservation layer 16 can improve the heat preservation performance of the reduction tank 1, which is beneficial to controlling the temperature conditions for the biochemical reduction treatment of bacteria. The structure is simple and effective. Preferably, the top of the reduction tank 1 is a closed structure, the heat preservation layer 16 is wrapped around the four sides of the reduction tank 1, and a chemical addition port 19 is provided at the top of the reduction tank 1, which is convenient for adding anaerobic denitrifying bacteria into the reduction tank 1.
[0036] Furthermore, in this embodiment, a first feed inlet 17 is provided in the upper part of the reduction tank 1 (specifically, in the upper part of the first reduction tank 11) and a first discharge outlet 18 is provided in the lower part (specifically, in the lower part of the second reduction tank 12). A first reflux pipeline (not shown in the figure) is provided between the first discharge outlet 18 and the first feed inlet 17. The materials in the reduction tank 1 can be circulated and refluxed through the first reflux pipeline, which can further enhance the ability of bacteria to decompose perchlorate and improve the digestion effect of bacteria on perchlorate.
[0037] Furthermore, in this embodiment, a second discharge outlet 25 is provided in the lower part of the oxidation tank 2 (specifically, in the lower part of the second oxidation tank 22). A second reflux pipeline (not shown in the figure) is provided between the second discharge outlet 25 and the first feed inlet 17. The materials in the oxidation tank 2 can be circulated and refluxed through the second reflux pipeline, which can further enhance the ability of bacteria to decompose perchlorate and improve the digestion effect of bacteria on perchlorate. Of course, the materials in the oxidation tank 2 can also be discharged through the second discharge outlet 25. Preferably, the tops of the oxidation tank 2, the sedimentation tank 3 and the clear water tank 4 are of a louver 6 structure. An air inlet 26 is provided at the top of the oxidation tank 2, and an air diffuser pipe 27 is provided at the bottom. The air diffuser pipe 27 is communicated with the air inlet 26, so that air can be aerated into the oxidation tank 2; a second filler 52 is provided in the middle of the oxidation tank 2, and aerobic bacteria are added into the oxidation tank 2.
[0038] Further, in this embodiment, inclined plates and tubes 34 are provided in the sedimentation tank 3, and a conical hopper 35 is provided below the inclined plates and tubes 34, which is beneficial to concentrate the sludge. A third discharge port 36 is provided at the bottom of the conical hopper 35, and the sludge can be discharged from the third discharge port 36.
[0039] The working process of the perchlorate wastewater purification and treatment device of the present utility model is as follows:
[0040] After the perchlorate wastewater is heated to a set temperature by the heater, it enters the first reduction tank 11 through the first feed port 17, and at the same time, a reagent is added through the chemical dosing port 19; then it sequentially passes through the bottom of the first partition plate 13 and enters the second reduction tank 12, and then flows to the bottom of the first oxidation tank 21 through the first overflow pipe 14 at the upper part of the second reduction tank 12; after flowing to the upper part of the second oxidation tank 22, it enters the water distribution pipe 31 in the sedimentation tank 3 through the second overflow pipe 24; after sedimentation in the sedimentation tank 3, the clear water overflows from the upper overflow weir 32 through the overflow holes 33 and enters the clear water tank 4; after the treatment is completed, it is finally discharged outside through the water outlet 41 of the clear water tank 4.
[0041] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the above-disclosed technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model without departing from the technical solution of the present utility model shall fall within the scope of protection of the technical solution of the present utility model.
Claims
1. A perchlorate wastewater purification and treatment device, characterized in that: It includes a reduction pond (1) for performing bacterial biochemical reduction treatment, an oxidation pond (2) for performing bacterial biochemical oxidation treatment, a sedimentation pond (3) and a clear water pond (4). The reduction pond (1), the oxidation pond (2), the sedimentation pond (3) and the clear water pond (4) are connected in sequence.
2. The perchlorate wastewater purification treatment device according to claim 1, characterized in that: The reduction pond (1) includes a first reduction pond (11), a second reduction pond (12) and a first partition board (13) arranged between the first reduction pond (11) and the second reduction pond (12). The bottoms of the first reduction pond (11) and the second reduction pond (12) are connected.
3. The perchlorate wastewater purification treatment device according to claim 2, characterized in that: The oxidation pond (2) includes a first oxidation pond (21), a second oxidation pond (22) and a second partition board (23) arranged between the first oxidation pond (21) and the second oxidation pond (22). The second reduction pond (12) is provided with a first overflow pipe (14). The lower end of the first overflow pipe (14) extends to the bottom of the first oxidation pond (21). The side of the second partition board (23) away from the first overflow pipe (14) is disconnected.
4. The perchlorate wastewater purification treatment device according to claim 3, characterized in that: The second oxidation pond (22) is provided with a second overflow pipe (24). The second overflow pipe (24) is arranged opposite to the disconnected side of the second partition board (23). A water distribution pipe (31) is arranged in the sedimentation pond (3). The lower end of the second overflow pipe (24) is connected to the water distribution pipe (31).
5. The perchlorate wastewater purification treatment device according to claim 4, characterized in that: An overflow weir (32) is arranged in the sedimentation pond (3). An overflow hole (33) is arranged on the side of the overflow weir (32) close to the clear water pond (4). The overflow weir (32) and the water distribution pipe (31) are arranged on both sides of the sedimentation pond (3) relatively. The height of the overflow weir (32) is greater than the height of the water distribution pipe (31).
6. The perchlorate wastewater purification treatment device according to any one of claims 1 to 5, characterized in that: A stirrer (15) is arranged in the reduction pond (1).
7. The perchlorate wastewater purification treatment device according to any one of claims 1 to 5, characterized in that: A heat preservation layer (16) is arranged outside the reduction pond (1).
8. The perchlorate wastewater purification treatment device according to any one of claims 1 to 5, characterized in that: A first feed inlet (17) is arranged at the upper part of the reduction pond (1) and a first discharge outlet (18) is arranged at the lower part. A first reflux pipeline is arranged between the first discharge outlet (18) and the first feed inlet (17).
9. The perchlorate wastewater purification treatment device according to claim 8, characterized in that: A second discharge outlet (25) is arranged at the lower part of the oxidation pond (2). A second reflux pipeline is arranged between the second discharge outlet (25) and the first feed inlet (17).
10. The perchlorate wastewater purification treatment device according to any one of claims 1 to 5, characterized in that: Inclined plates and inclined tubes (34) are arranged in the sedimentation pond (3). A conical hopper (35) is arranged below the inclined plates and inclined tubes (34).