Efficient electrolytic flocculation coupled biological method reaction device
By integrating hydrogen and oxygen collection systems in the sewage treatment equipment, using hydrogen heating and oxygen aeration generated by electrolysis, the problems of unsatisfactory flocculation and precipitation effects and high energy consumption are solved, and efficient and low-cost sewage purification and treatment are achieved.
Patent Information
- Application Number
- CN202422154277.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In existing sewage treatment equipment, the flocculation and precipitation effect is not ideal, the water flows slowly, the biological treatment system has high energy consumption, and the electroflocculation cost is high, making it difficult to achieve efficient purification and low-cost treatment.
A highly efficient electrolytic flocculation coupled biological reaction device is designed, using hydrogen generated during electrolysis as heater fuel, and oxygen as a source of aeration for biochemical reaction tanks, integrating hydrogen storage tanks, oxygen storage tanks and biochemical reaction tanks to reduce energy consumption and improve flocculation efficiency.
Through hydrogen heating and oxygen aeration, energy consumption is reduced, flocculation and precipitation effect and biochemical reaction efficiency are improved, and efficient and cost reduction of wastewater purification treatment is achieved.
Smart Images
Figure CN223188986U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of sewage treatment, and more specifically, relates to a high-efficiency electrolysis and flocculation coupled biological reaction device. Background Art
[0002] With the rapid increase of human industrial activities and population, environmental problems are becoming more and more serious. Among environmental problems, water pollution is the top priority. Therefore, the technology of treating polluted water and achieving standard discharge or reuse is becoming more and more important.
[0003] Current sewage treatment processes typically utilize flocculation, sedimentation, and filtration processes, along with biochemical treatment systems. Existing sedimentation-type sewage treatment equipment uses gravity to force water through sedimentation plates, then through the filtration layer before exiting the equipment. During operation, this type of equipment suffers from slow water flow, which prevents sufficient mixing with the enzymes and short contact time with the sedimentation plates. This results in suboptimal flocculation and sedimentation, resulting in low sewage purification efficiency and a need for innovative improvements. Biological treatment systems, on the other hand, require supplemental oxygenation equipment.
[0004] To this end, the research and technology of electroflocculation have been applied to the purification and treatment of various water bodies. The electroflocculation electrolysis device used in the electroflocculation method generally has an electrolytic cell with anode and cathode plates. Due to the characteristic of the plates generating flocculants in situ, it has the advantages of high activity, easy control, and low mud volume. However, the high cost of electroflocculation technology has limited its application and promotion. Traditional biochemical treatment systems also have the disadvantage of high energy consumption of aerobic aeration. Therefore, how to improve the efficiency of electroflocculation and reduce costs, and how to improve the efficiency of the biochemical treatment link and reduce costs have become key links in the promotion and application of this technology. Utility Model Content
[0005] In response to the technical problem of high cost in the prior art, the purpose of the embodiments of the present application is to provide a high-efficiency electrolysis and flocculation coupled biological reaction device to collect and utilize the hydrogen and oxygen generated during the electrolysis process, thereby reducing costs.
[0006] To achieve the above-mentioned objectives, the technical solution adopted in this application is: to provide a high-efficiency electrolysis and flocculation coupled biological reaction device, comprising: an electrolytic cell, a heater, a hydrogen storage tank, an oxygen storage tank and a biochemical reaction tank; the heater is provided with a water inlet pipe, the heater is connected to the electrolytic cell, the electrolytic cell is connected to the biochemical reaction tank, an anode plate and a cathode plate are arranged at intervals in the electrolytic cell, an oxygen collector covering the anode plate and a hydrogen collector covering the cathode plate are provided in the electrolytic cell, the oxygen collector is connected to the oxygen storage tank, the hydrogen collector is connected to the hydrogen storage tank, the hydrogen storage tank is connected to the heater, and the oxygen storage tank is connected to the biochemical reaction tank.
[0007] In one embodiment, the biochemical reaction tank is sequentially provided with an anoxic tank, an anaerobic tank and an aerobic tank, the sewage discharged from the electrolytic cell enters the anoxic tank, and the oxygen storage tank is connected to the bottom of the aerobic tank.
[0008] In one embodiment, the anode plates and the cathode plates are arranged in a staggered manner, the oxygen collectors and the hydrogen collectors are arranged in a staggered manner, the multiple oxygen collectors are connected through a first connecting pipe, and the multiple hydrogen collectors are connected through a second connecting pipe.
[0009] In one embodiment, the height of the hydrogen collector is higher than that of the oxygen collector, the first connecting pipe is arranged on a side of the oxygen collector, and the second connecting pipe is arranged on a top of the hydrogen collector.
[0010] In one embodiment, the anode plates and the cathode plates are arranged in a staggered manner, each anode plate is covered with an oxygen collector, the hydrogen collector covers all the cathode plates and the oxygen collector, and the height of the hydrogen collector is higher than the height of the oxygen collector.
[0011] In one embodiment, a circulation pipe is provided between the heater and the electrolytic cell, and a circulation pump is provided on the circulation pipe.
[0012] In one embodiment, the hydrogen storage tank is provided with a hydrogen discharge valve, the oxygen storage tank is provided with an oxygen discharge valve, the water inlet pipe is provided with a water inlet valve, the oxygen collector is connected to the oxygen storage tank through a first exhaust pipe and is provided with an oxygen exhaust valve, and the hydrogen collector is connected to the hydrogen storage tank through a second exhaust pipe and is provided with a hydrogen exhaust valve.
[0013] In one embodiment, the electrolytic cell and the biochemical reaction tank are connected via a water outlet pipe, and a water outlet valve is provided on the water outlet pipe.
[0014] In one embodiment, the biochemical reaction tank is provided with a drain pipe connected to the aerobic tank, and the drain pipe is provided with a drain valve.
[0015] In one embodiment, the anode plate is made of iron or aluminum.
[0016] The beneficial effects of the high-efficiency electrolysis and flocculation coupled biological reaction device provided in the present application are as follows: by setting up an oxygen collector and a hydrogen collector to collect the oxygen and hydrogen generated during the electrolysis process, hydrogen is used as fuel for the heater to heat the sewage, saving energy and reducing costs. At the same time, the heated sewage effectively reduces the viscosity of the sewage, improves molecular thermal motion, and improves the removal rate of heavy metals, SS, colloids, and COD, which is more conducive to improving the efficiency of electroflocculation treatment; using oxygen as the aeration source, aeration equipment is omitted, reducing costs while improving the COD removal efficiency of the biochemical reaction tank, reducing the area occupied by the biochemical section, and achieving standard emissions. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0018] Figure 1 A schematic structural diagram of a first embodiment of a high-efficiency flocculation electrolysis reaction device and an electrolytic cell provided in an embodiment of the present application;
[0019] Figure 2 This is a schematic structural diagram of a second embodiment of the electrolytic cell in the high-efficiency flocculation electrolysis reaction device provided in an embodiment of the present application;
[0020] Figure 3 This is a schematic structural diagram of the third embodiment of the electrolytic cell in the high-efficiency flocculation electrolysis reaction device provided in an embodiment of the present application.
[0021] Among them, the reference numerals in the figures are:
[0022] 1. Electrolyzer; 2. Anode plate; 3. Cathode plate; 4. Oxygen collector; 5. Hydrogen collector; 6. Heater; 7. Water inlet pipe; 8. First exhaust pipe; 9. Second exhaust pipe; 10. Oxygen storage tank; 11. Hydrogen storage tank; 12. First connecting pipe; 13. Second connecting pipe; 14. Circulation pipe; 15. Circulation pump; 16. Hydrogen exhaust valve; 17. Oxygen exhaust valve; 18. Water inlet valve; 19. Oxygen exhaust valve; 20. Hydrogen exhaust valve; 21. Water outlet pipe; 22. Water outlet valve; 23. DC power supply; 24. Biochemical reaction tank; 25. Anoxic tank; 26. Anaerobic tank; 27. Aerobic tank; 28. Drain pipe; 29. Drain valve. DETAILED DESCRIPTION
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0024] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0027] like Figure 1-Figure 3As shown, a high-efficiency electrolysis and flocculation coupled biological reaction device provided in an embodiment of the present application is now described. The high-efficiency electrolysis and flocculation coupled biological reaction device includes: an electrolytic cell 1, a heater 6, a hydrogen storage tank 11, an oxygen storage tank 10, and a biochemical reaction tank 24. The heater 6 is provided with a water inlet pipe 7 for sewage to enter, and the heater 6 heats the sewage. The heater 6 is connected to the electrolytic cell 1, and the electrolytic cell 1 is connected to the biochemical reaction tank 24. The electrolytic cell 1 is provided with an anode plate 2 and a cathode plate 3, and the anode plate 2 and the cathode plate 3 are connected to a DC power supply 23. The electrolytic cell 1 is provided with an oxygen collector 4 covering the anode plate 2 and a hydrogen collector 5 covering the cathode plate 3, respectively. The oxygen collector 4 is connected to the oxygen storage tank 10 via a first exhaust pipe 8, and the hydrogen collector 5 is connected to the hydrogen storage tank 11 via a second exhaust pipe 9. The hydrogen storage tank 11 is connected to the heater 6, and the oxygen storage tank 10 is connected to the biochemical reaction tank 24. The heater 6 is a conventional inner-outer sandwich burner, with the outer layer being a combustion chamber equipped with an igniter that ignites hydrogen to generate heat; the inner layer being a heating chamber for heating the wastewater. The oxygen storage tank 10 is connected to the biochemical reaction tank 24 for exposing the biochemical reaction tank 24 to oxygen.
[0028] Specifically, an anoxic tank 25 , an anaerobic tank 26 and an aerobic tank 27 are sequentially provided in the biochemical reaction tank 24 . The sewage discharged from the electrolytic cell 1 enters the anoxic tank 25 , and the oxygen storage tank 10 is connected to the bottom of the aerobic tank 27 .
[0029] like Figure 1 As shown, in the first embodiment, multiple anode plates 2 and cathode plates 3 are arranged alternately. Each anode plate 2 is covered with an oxygen collector 4. Adjacent oxygen collectors 4 are connected by a first connecting pipe 12. A hydrogen collector 5 covers all cathode plates 3 and oxygen collectors 4. The height of the hydrogen collector 5 is higher than that of the oxygen collector 4. This facilitates hydrogen collection due to its light weight.
[0030] like Figure 2 As shown, in the second embodiment, only one anode plate 2 and one cathode plate 3 are provided in one electrolytic cell 1, and the oxygen collector 4 and the hydrogen collector 5 are arranged in parallel.
[0031] like Figure 3As shown, in the third embodiment, a plurality of anode plates 2 and cathode plates 3 are arranged alternately in an electrolytic cell 1, and a plurality of oxygen collectors 4 and hydrogen collectors 5 are arranged alternately. The plurality of oxygen collectors 4 are connected via a first connecting pipe 12, and the plurality of hydrogen collectors 5 are connected via a second connecting pipe 13. In this way, the plurality of oxygen collectors 4 are interconnected, which facilitates the discharge of the collected oxygen into the oxygen storage tank 10, and the plurality of hydrogen collectors 5 are interconnected, which facilitates the discharge of the collected hydrogen into the hydrogen storage tank 11. Specifically, the height of the hydrogen collector 5 is higher than that of the oxygen collector 4. The first connecting pipe 12 is arranged on the side of the oxygen collector 4 to connect two adjacent oxygen collectors 4. The second connecting pipe 13 is arranged on the top of the hydrogen collector 5. The second connecting pipe 13 is located above the oxygen collector 4 and is used to connect two adjacent hydrogen collectors 5. The oxygen collector 4 and the hydrogen collector 5 are both rectangular cover structures.
[0032] In this embodiment, a circulation pipe 14 is provided between the heater 6 and the electrolytic cell 1, and a circulation pump 15 is provided on the circulation pipe 14. The circulation pump 15 can circulate the sewage between the heater 6 and the electrolytic cell 1, so that the sewage in the electrolytic cell 1 is circulated and heated. When the sewage temperature reaches the design requirement, the circulation pump 15 is turned off.
[0033] In this embodiment, the hydrogen storage tank 11 is provided with a hydrogen discharge valve 16, and the oxygen storage tank 10 is provided with an oxygen discharge valve 17, for controlling the discharge of hydrogen and oxygen. The water inlet pipe 7 is provided with a water inlet valve 18, the first exhaust pipe 8 is provided with an oxygen exhaust valve 19, and the second exhaust pipe 9 is provided with a hydrogen exhaust valve 20. Each valve is used to control the flow of the corresponding pipe.
[0034] In this embodiment, the electrolytic cell 1 is provided with a water outlet pipe 21, which is provided with a drain valve 29. The water outlet pipe 21 is used to discharge the water after electrolysis into the anoxic tank 25 for biochemical reaction. The biochemical reaction tank 24 is provided with a drain pipe 28 connected to the aerobic tank 27, and the drain pipe 28 is provided with a drain valve 29.
[0035] In this embodiment, the anode plate 2 is made of iron, aluminum or precious metals, so that heavy metals, SS, colloids and COD in the sewage can be flocculated, precipitated or reacted, thereby being effectively removed.
[0036] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A high-efficiency electrolysis and flocculation coupled biological reaction device, characterized in that: include: An electrolytic cell (1), a heater (6), a hydrogen storage tank (11), an oxygen storage tank (10) and a biochemical reaction pool (24); the heater (6) is provided with a water inlet pipe (7), the heater (6) is connected to the electrolytic cell (1), the electrolytic cell (1) is connected to the biochemical reaction pool (24), an anode plate (2) and a cathode plate (3) are arranged in the electrolytic cell (1), an oxygen collector (4) covering the anode plate (2) and a hydrogen collector (5) covering the cathode plate (3) are provided in the electrolytic cell (1), the oxygen collector (4) is connected to the oxygen storage tank (10), the hydrogen collector (5) is connected to the hydrogen storage tank (11), the hydrogen storage tank (11) is connected to the heater (6), and the oxygen storage tank (10) is connected to the biochemical reaction pool (24).
2. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 1, characterized in that: The biochemical reaction pool (24) is provided with an anoxic pool (25), an anaerobic pool (26) and an aerobic pool (27) in sequence. The sewage discharged from the electrolytic cell (1) enters the anoxic pool (25). The oxygen storage tank (10) is connected to the bottom of the aerobic pool (27).
3. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 2, characterized in that: The anode plates (2) and the cathode plates (3) are arranged in a staggered manner, the oxygen collectors (4) and the hydrogen collectors (5) are arranged in a staggered manner, the multiple oxygen collectors (4) are connected through a first connecting pipe (12), and the multiple hydrogen collectors (5) are connected through a second connecting pipe (13).
4. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 3, characterized in that: The height of the hydrogen collector (5) is higher than that of the oxygen collector (4), the first connecting pipe (12) is arranged on the side of the oxygen collector (4), and the second connecting pipe (13) is arranged on the top of the hydrogen collector (5).
5. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 2, characterized in that: The anode plates (2) and the cathode plates (3) are arranged in a staggered manner, each anode plate (2) is covered with an oxygen collector (4), the hydrogen collector (5) covers all the cathode plates (3) and the oxygen collector (4), and the height of the hydrogen collector (5) is higher than the height of the oxygen collector (4).
6. The high-efficiency electro-flocculation coupled biological reaction device according to any one of claims 2 to 5, characterized in that: A circulation pipe (14) is provided between the heater (6) and the electrolytic cell (1), and a circulation pump (15) is provided on the circulation pipe (14).
7. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 6, characterized in that: The hydrogen storage tank (11) is provided with a hydrogen discharge valve (16), the oxygen storage tank (10) is provided with an oxygen discharge valve (17), the water inlet pipe (7) is provided with a water inlet valve (18), the oxygen collector (4) is connected to the oxygen storage tank (10) through a first exhaust pipe (8) and is provided with an oxygen exhaust valve (19), and the hydrogen collector (5) is connected to the hydrogen storage tank (11) through a second exhaust pipe (9) and is provided with a hydrogen exhaust valve (20).
8. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 7, characterized in that: The electrolytic cell (1) and the biochemical reaction pool (24) are connected via a water outlet pipe (21), and a water outlet valve (22) is provided on the water outlet pipe (21).
9. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 8, characterized in that: The biochemical reaction tank (24) is provided with a drainage pipe (28) communicating with the aerobic tank (27), and the drainage pipe (28) is provided with a drainage valve (29).
10. The high-efficiency electrolysis and flocculation coupled biological reaction device according to claim 8, characterized in that: The anode plate (2) is made of iron or aluminum.