A biochemical treatment device

Abstract

The utility model belongs to sewage treatment technical field, concretely provides a biochemical treatment device, including sewage treatment pond, the sewage treatment pond is equipped with anaerobic zone, aerobic zone and anoxic precipitation zone from below to above in proper order, anaerobic zone with aerobic zone intercommunication, anoxic precipitation zone includes sludge hopper and the anoxic zone around sludge hopper arrangement, the biological membrane filler is equipped in the anoxic zone, the anoxic zone top is passed through overflow board with sludge hopper intercommunication, the anoxic zone bottom is passed through with the aerobic zone intercommunication of overflow hole, the biochemical treatment device provided by the utility model integrates anaerobic zone, aerobic zone and anoxic precipitation zone in a biochemical device inside, realizes sewage treatment, mud water separation function such as simultaneously, simplifies the process, fully saves the occupation and investment, realizes mud water efficient separation.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to a biochemical treatment device. Background Technology

[0002] In the field of biological wastewater treatment, the A / O (anaerobic / aerobic) process, as a classic wastewater treatment technology, can achieve core treatment goals such as pollutant degradation, biological nitrogen removal, and biological phosphorus removal. However, existing technologies typically require the separate installation of multiple biological treatment tanks. Furthermore, to enhance nitrogen and phosphorus removal, additional auxiliary equipment is needed, resulting in a lengthy overall process, complex operation, and low treatment efficiency. Moreover, the large number and dispersed layout of the tanks significantly increases the land area required, especially in land-scarce urban core areas where land costs account for a very high proportion. Utility Model Content

[0003] The purpose of this invention is to overcome the problems of existing technologies that require multiple biochemical reaction tanks, resulting in large land occupation and investment.

[0004] Therefore, this utility model provides a biochemical treatment device, including a sewage treatment tank; the sewage treatment tank is provided with an anaerobic zone, an aerobic zone and an anoxic sedimentation zone from bottom to top; the anaerobic zone is connected to the aerobic zone; the anoxic sedimentation zone includes a sludge hopper and an anoxic zone arranged around the sludge hopper; the anoxic zone is provided with biofilm packing; the top of the anoxic zone is connected to the sludge hopper through an overflow plate; the bottom of the anoxic zone is connected to the aerobic zone through a flow hole.

[0005] Specifically, the sludge hopper is provided with a baffle plate; the baffle plate is higher than the overflow plate, and there is a gap between the baffle plate and the overflow plate.

[0006] Specifically, the aforementioned biochemical treatment device also includes an outlet pipe; the baffle plate is provided with an outlet; and the outlet pipe is connected to the sludge hopper through the outlet.

[0007] Specifically, a water distributor is installed at the bottom of the anaerobic zone; the water distributor is connected to the inlet pipe through a water distribution pipe.

[0008] Specifically, a water pump is installed at the connection between the aforementioned water inlet pipe and the water distribution pipe.

[0009] Specifically, the bottom of the aforementioned sludge hopper is connected to a sludge discharge pipe.

[0010] Specifically, the aforementioned sludge discharge pipe is connected to the aforementioned water distribution pipe.

[0011] Specifically, an aeration head is provided at the bottom of the aerobic zone; the aeration head is connected to the aeration fan through an air inlet pipe.

[0012] Specifically, the aforementioned intake pipe is equipped with a regulating valve.

[0013] Specifically, an installation frame is provided in the aforementioned hypoxic zone; the biofilm packing material is filled in the installation frame.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] The biochemical treatment device provided by this utility model integrates the anaerobic zone, aerobic zone and anoxic sedimentation zone into one biochemical device, and realizes the functions of sewage treatment and sludge-water separation at the same time. It simplifies the process, saves land and investment, and achieves efficient sludge-water separation.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic elevation view of a biochemical treatment device in one implementation method.

[0018] Figure 2 This is a top view of a biochemical treatment device in one embodiment.

[0019] Explanation of reference numerals in the attached diagram: 1. Wastewater treatment tank; 2. Anaerobic zone; 3. Water distributor; 4. Water distribution pipe; 5. Inlet pipe; 6. Inlet pump; 7. Aerobic zone; 8. Aeration head; 9. Air inlet pipe; 10. Aeration blower; 11. Regulating valve; 12. Anoxic zone; 13. Mounting frame; 14. Biofilm packing material; 15. Flow hole; 16. Overflow plate; 17. Baffle plate; 18. Sludge hopper; 19. Outlet pipe; 20. Sludge discharge pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] Reference Figure 1-2 This utility model provides a biochemical treatment device, including a wastewater treatment tank 1. The wastewater treatment tank 1 is provided with an anaerobic zone 2, an aerobic zone 7, and an anoxic sedimentation zone arranged sequentially from bottom to top. The anaerobic zone 2 is connected to the aerobic zone 7. The anoxic sedimentation zone includes a sludge hopper 18 and an anoxic zone 12 arranged around the sludge hopper 18. A biofilm packing material 14 is provided in the anoxic zone 12. The top of the anoxic zone 12 is connected to the sludge hopper 18 through an overflow plate 16. The bottom of the anoxic zone 12 is connected to the aerobic zone 7 through a flow hole 15. Wastewater first enters the anaerobic zone 2 at the bottom, where anaerobic phosphorus release occurs. As time progresses, the sludge-water mixture rises into the aerobic zone 7 for aerobic reaction, effectively removing ammonia nitrogen and phosphate from the wastewater. After treatment in aerobic zone 7, the wastewater rises and enters anoxic zone 12 through overflow holes 15. There, a biofilm forms under the action of solid biofilm packing material 14, removing nitrates through denitrification, thus achieving biological denitrification. The sludge-water mixture after treatment in anoxic zone 12 overflows through overflow plate 16 into sludge hopper 18, where sedimentation separates the sludge from the water. In actual use, suitable anaerobic and aerobic microorganisms can be added to anaerobic zone 2 and aerobic zone 7 as needed; details are omitted here.

[0023] Specifically, the sludge hopper 18 is equipped with a baffle plate 17; the baffle plate 17 is higher than the overflow plate 16, and there is a gap between the baffle plate 17 and the overflow plate 16. The sludge-water mixture after being treated in the anoxic zone 12 overflows into the sludge hopper 18 through the overflow plate 16, and slowly enters the sludge hopper 18 under the action of the baffle plate 17, thus forming sludge-water separation.

[0024] Furthermore, the biochemical treatment device also includes a water outlet pipe 19; the baffle plate 17 is provided with a water outlet; the water outlet pipe 19 is connected to the sludge hopper 18 through the water outlet. Sludge accumulates in the sludge hopper 18, and clean water is discharged through the water outlet pipe 19. The location and number of water outlets and water outlet pipes 19 are designed according to actual conditions, and are generally located near the upper part of the baffle plate 17 to ensure the overflow of clean liquid without affecting the separation of sludge and water.

[0025] In a more detailed implementation, a water distributor 3 is provided at the bottom of the anaerobic zone 2; the water distributor 3 is connected to the inlet pipe 5 via a water distribution pipe 4. The specific distribution of the water distributor 3 in the anaerobic zone 2 can be designed according to actual needs, ensuring that the incoming wastewater is evenly distributed in the anaerobic zone 2.

[0026] Preferably, an inlet pump 6 is provided at the connection between the inlet pipe 5 and the distribution pipe 4. The inlet pump 6 ensures stable sewage delivery.

[0027] Optionally, a sludge discharge pipe 20 is connected to the bottom of the sludge hopper 18, and the sludge accumulated in the sludge hopper 18 is discharged through the sludge discharge pipe 20.

[0028] In an optimized implementation, the sludge discharge pipe 20 is connected to the water distribution pipe 4. The sludge discharge pipe 20 serves as a sludge return pipe, through which sludge flows with the influent into the anaerobic zone 2, replenishing the number of microorganisms in the anaerobic zone 2.

[0029] In a detailed implementation, an aeration head 8 is provided at the bottom of the aerobic zone 7; the aeration head 8 is connected to the aeration blower 10 via an air inlet pipe 9. Dissolved oxygen is provided to the aerobic zone 7 through the aeration blower 10 and the aeration head 8, effectively removing ammonia nitrogen and phosphate from the wastewater. The specific distribution of the aeration head 8 in the aerobic zone 7 can be designed according to actual needs, ensuring that the dissolved oxygen entering the aerobic zone 7 is evenly distributed.

[0030] Preferably, the air inlet pipe 9 is equipped with a regulating valve 11, which controls the concentration of dissolved oxygen, so as to effectively remove ammonia nitrogen in the wastewater and form nitrate. At the same time, phosphate in the wastewater is absorbed by aerobic microorganisms, thus achieving the purpose of pollutant removal and biological phosphorus removal.

[0031] Specifically, an installation frame 13 is provided within the anoxic zone 12; the biofilm packing material 14 is filled within the installation frame 13. The installation frame 13 ensures that the biofilm packing material 14 is installed in a suitable position and does not shift or disrupt the operation during work.

[0032] Example 1:

[0033] This embodiment provides a biochemical treatment device, including a sewage treatment tank 1; the sewage treatment tank 1 is provided with an anaerobic zone 2, an aerobic zone 7 and an anoxic sedimentation zone from bottom to top;

[0034] Anaerobic zone 2 is connected to aerobic zone 7; a water distributor 3 is provided at the bottom of anaerobic zone 2; the water distributor 3 is connected to the inlet pipe 5 through the water distribution pipe 4, and an inlet pump 6 is provided at the connection between the inlet pipe 5 and the water distribution pipe 4; an aeration head 8 is provided at the bottom of aerobic zone 7; the aeration head 8 is connected to the aeration blower 10 through the air inlet pipe 9; a regulating valve 11 is provided on the air inlet pipe 9.

[0035] The anoxic sedimentation zone includes a sludge hopper 18 and an anoxic zone 12 arranged around the sludge hopper 18; an installation frame 13 is provided in the anoxic zone 12; the installation frame 13 is filled with biofilm packing material 14; the bottom of the anoxic zone 12 is connected to the aerobic zone 7 through a flow hole 15; the top of the anoxic zone 12 is connected to the sludge hopper 18 through an overflow plate 16; a baffle plate 17 is provided on the sludge hopper 18; the baffle plate 17 is higher than the overflow plate 16, and there is a gap between the baffle plate 17 and the overflow plate 16; a water outlet is provided on the baffle plate 17, and the water outlet is connected to a water outlet pipe 19; a sludge discharge pipe 20 is connected to the bottom of the sludge hopper 18, and the sludge discharge pipe 20 is connected to the water distribution pipe 4.

[0036] In operation, wastewater enters the device through inlet pipe 5, inlet pump 6, and distribution pipe 4. It is evenly distributed in anaerobic zone 2 by distributor 3, where an anaerobic phosphorus release reaction occurs. The sludge-water mixture then rises into aerobic zone 7, where dissolved oxygen is provided by blowers and aeration heads 8. The dissolved oxygen concentration is controlled by regulating valve 11, effectively removing ammonia nitrogen from the wastewater and forming nitrates. Simultaneously, phosphates in the wastewater are absorbed by aerobic microorganisms, achieving both pollutant removal and biological phosphorus removal. After treatment in aerobic zone 7, the wastewater rises through overflow holes 15 into anoxic zone 12, where a biofilm forms under the action of solid biofilm packing 14. Nitrate is removed through denitrification, achieving biological denitrification. After treatment in anoxic zone 12, the sludge-water mixture overflows through overflow plate 16 into sludge hopper 18, where it slowly enters under the action of baffle plate 17, achieving sludge-water separation through sedimentation. The clean water is discharged through the outlet pipe 19, while the sludge accumulates in the sludge hopper 18 and finally flows into the anaerobic zone 2 with the influent through the sludge discharge pipe 20 to replenish the number of microorganisms in the anaerobic zone 2.

[0037] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A biochemical treatment device, characterized in that: The system includes a wastewater treatment tank (1); the wastewater treatment tank (1) is provided with an anaerobic zone (2), an aerobic zone (7) and an anoxic sedimentation zone from bottom to top; the anaerobic zone (2) is connected to the aerobic zone (7); the anoxic sedimentation zone includes a sludge hopper (18) and an anoxic zone (12) arranged around the sludge hopper (18); the anoxic zone (12) is provided with biofilm packing (14); the top of the anoxic zone (12) is connected to the sludge hopper (18) through an overflow plate (16); the bottom of the anoxic zone (12) is connected to the aerobic zone (7) through a flow hole (15).

2. The biochemical treatment device as described in claim 1, characterized in that: The sludge hopper (18) is provided with a baffle plate (17); the baffle plate (17) is higher than the overflow plate (16), and there is a gap between the baffle plate (17) and the overflow plate (16).

3. The biochemical treatment device as described in claim 2, characterized in that: It also includes a water outlet pipe (19); the baffle plate (17) is provided with a water outlet; the water outlet pipe (19) is connected to the sludge hopper (18) through the water outlet.

4. The biochemical treatment device as described in claim 1, characterized in that: The bottom of the anaerobic zone (2) is provided with a water distributor (3); the water distributor (3) is connected to the water inlet pipe (5) through the water distribution pipe (4).

5. The biochemical treatment device as described in claim 4, characterized in that: A water inlet pump (6) is provided at the connection between the water inlet pipe (5) and the water distribution pipe (4).

6. The biochemical treatment device as described in claim 4, characterized in that: The bottom of the sludge hopper (18) is connected to a sludge discharge pipe (20).

7. The biochemical treatment apparatus as described in claim 6, characterized in that: The sludge discharge pipe (20) is connected to the water distribution pipe (4).

8. The biochemical treatment device as described in claim 1, characterized in that: The aerobic zone (7) is provided with an aeration head (8) at the bottom; the aeration head (8) is connected to the aeration blower (10) through an air inlet pipe (9).

9. The biochemical treatment apparatus as described in claim 8, characterized in that: The intake pipe (9) is equipped with a regulating valve (11).

10. The biochemical treatment apparatus as described in claim 1, characterized in that: An installation frame (13) is provided in the hypoxic zone (12); the biofilm filler (14) is filled in the installation frame (13).

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