CN212924564U - Biochemical reaction device with intermittently operated fixed bed and fluidized bed - Google Patents
Biochemical reaction device with intermittently operated fixed bed and fluidized bed Download PDFInfo
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- CN212924564U CN212924564U CN202021026197.3U CN202021026197U CN212924564U CN 212924564 U CN212924564 U CN 212924564U CN 202021026197 U CN202021026197 U CN 202021026197U CN 212924564 U CN212924564 U CN 212924564U
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Abstract
The utility model provides a biochemical reaction device with a fixed bed and a fluidized bed running intermittently. The biochemical reaction device comprises: the anaerobic reaction zone, the valve, the first air blowing device, the second air blowing device, the first aerobic reaction zone, the second aerobic reaction zone and the air main conveying pipeline are sequentially communicated. The air main conveying pipeline is sequentially provided with a first air outlet, a second air outlet and a third air outlet and is communicated with the first air conveying pipeline, the second air conveying pipeline and the third air conveying pipeline in a one-to-one correspondence manner; the valve is used for controlling the opening and closing of the first air conveying pipeline; the first air blowing device and the second air blowing device are used for blowing air into the air main conveying pipeline, the first air blowing device is consistent with the opening and closing of the valve, and the second air blowing device is in a normally open state. The device can be switched between a fixed bed mode and a fluidized bed mode, so that the problem that the sewage treatment efficiency is greatly influenced by the resistance of the biological filler film layer is effectively solved.
Description
Technical Field
The utility model relates to a sewage treatment field particularly, relates to a biochemical reaction device of fixed bed and fluidized bed intermittent type operation.
Background
The bioreactor refers to a reaction system in which a liquid phase or a solid phase is inoculated with naturally occurring microorganisms or microorganisms having a specific degradation ability. The two most studied reactors today are the "elevator type reactor" and the "soil mud reactor". The elevator type reactor provides proper nutrition, carbon source and oxygen through the flow of water phase, thereby achieving the purpose of degrading pollutants in soil. Compared with a solid phase system, the bioreactor can effectively degrade pollutants in a shorter time.
The sewage treatment process is quite mature at present, and the core technology of the sewage treatment process is an activated sludge method or a biofilm method. The principle of biological treatment is to convert organic pollutants into harmless gas products (CO) by biological action, especially action of microorganisms, to complete decomposition of organic matters and synthesis of organisms2) Liquid products (water) and solid products (microbial populations or biological sludges) rich in organic matter. And (4) carrying out solid-liquid separation on the redundant biological sludge in the sedimentation tank through the sedimentation tank, and removing the redundant biological sludge from the purified sewage. According to the water quantity, water quality and water outlet requirements of sewage and local actual conditions, a reasonable sewage treatment process is selected, which has a decisive effect on the normal operation and treatment cost of sewage treatment.
The treatment process combining anaerobic reaction and aerobic reaction is usually adopted, wherein the anaerobic reaction is mainly used for removing nitrogen and phosphorus, and the aerobic reaction is mainly used for removing organic matters in water. However, the existing biochemical reaction apparatus has problems that after a period of treatment, the resistance of the biofilm bed layer is increased, so that the shutdown is necessary, and the biofilm bed layer is subjected to regeneration treatment, so that the sewage treatment period is prolonged and the working strength is high.
In view of the above problems, it is desirable to provide a biochemical treatment apparatus with high treatment efficiency and simple process.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a biochemical reaction device of fixed bed and fluidized bed intermittent type operation to there is the long and big problem of working strength of processing period in the process of solving current biochemical treatment device and handling sewage.
In order to achieve the above object, according to the present invention, there is provided a biochemical reaction apparatus in which a fixed bed and a fluidized bed intermittently operate, the biochemical reaction apparatus comprising: the air main conveying pipeline, the valve, the first air blowing device, the second air blowing device, the anoxic reaction zone, the first aerobic reaction zone and the second aerobic reaction zone are sequentially communicated. The air main conveying pipeline is sequentially provided with a first air outlet, a second air outlet and a third air outlet; the first air outlet is communicated with the anoxic reaction zone through a first air conveying pipeline, the second air outlet is communicated with the first aerobic reaction zone through a second air conveying pipeline, and the third air outlet is communicated with the second aerobic reaction zone through a third air conveying pipeline; the valve is used for controlling the opening and closing of the first air conveying pipeline and opening the valve when backwashing is performed; the first air blowing device is used for selectively blowing air into the main air conveying pipeline, and the opening and the closing of the first air blowing device are consistent with the opening and the closing of the valve; the second air blowing device is in a normally open state and is used for blowing air into the main air conveying pipeline.
Further, the anoxic reaction zone comprises a first biological packing layer, a first aeration device and a first water distribution device, the anoxic reaction zone is provided with a sewage inlet to be treated and a first water outlet, the first water distribution device is communicated with the sewage inlet to be treated through a first water inlet pipeline, the first aeration device is communicated with a first air outlet through a first air conveying pipeline, and the first biological packing layer comprises a first carrier and anaerobic microorganisms loaded on the first carrier; the first aerobic reaction zone comprises: the second biological packing layer comprises a second carrier and first aerobic microorganisms loaded on the second carrier, the second water distribution device is communicated with the first water outlet through a first water outlet pipeline, and the second aeration device is communicated with the second air outlet through a second air conveying pipeline; the second aerobic reaction zone comprises: the third aeration device is communicated with a third air outlet through a third air conveying pipeline, and the third water distribution device is communicated with the first aerobic reaction zone through a second water outlet pipeline.
Further, the first biological packing layer, the second biological packing layer and the third biological packing layer are respectively and independently selected from the group consisting of the packing rate of more than or equal to 75%, the density of the packing material of 1.05-1.15 and the specific surface area of 400-1500 m2/m3Of the material layer (c).
Furthermore, the biochemical reaction device also comprises an intermediate water storage device which is communicated with the second aerobic reaction zone and is used for storing water obtained after the treatment of the second aerobic reaction zone.
The anoxic reaction zone further comprises a water mixing tank arranged on the first water inlet pipeline, the water mixing tank is provided with a sewage inlet to be treated and a water return port, and the water return port is communicated with the middle water storage device through a return water pipeline.
Further, the biochemical reaction device further comprises: the liquid level monitoring device is used for monitoring the liquid level in the water mixing tank; and the power adjusting device is used for adjusting the power of the first air blowing device and the second air blowing device.
Further, the filling volume of the first biological filler layer is 75-90% of the volume of the anoxic reaction zone, the filling volume of the second biological filler layer is 75-90% of the volume of the first aerobic reaction zone, and the filling volume of the third biological filler layer is 75-90% of the volume of the second aerobic reaction zone.
Further, the biochemical reaction device further comprises: the air conditioner further comprises a first flow regulating device and a second flow regulating device, wherein the first flow regulating device is arranged on the second air conveying pipeline, and the second flow regulating device is arranged on the third air conveying pipeline.
By applying the technical scheme of the utility model, when in normal operation, the first air conveying pipeline is closed (the valve is closed), the second air conveying pipeline and the third air conveying pipeline are opened, the biochemical reaction device treats sewage in a fixed bed mode, and the second air blowing device blows air into the main air conveying pipeline; when the resistance in the anoxic reaction zone, the first aerobic reaction zone and the second aerobic reaction zone becomes large, the first air conveying pipeline is opened (the valve is opened), meanwhile, the first air blowing device is started, a large amount of air is introduced into the anoxic reaction zone, the first aerobic reaction zone and the second aerobic reaction zone so that the biochemical reaction device is converted into a fluidized bed from the fixed bed, and after mutual scrubbing and collision, the biochemical reaction device recovers the mode of the fixed bed. When the biochemical reaction device is used for treating sewage, the biochemical reaction device can be freely switched between a fixed bed mode and a fluidized bed mode, so that the problem that the resistance of each reaction area greatly influences the sewage treatment efficiency is effectively solved, and meanwhile, the reactor has the advantages of simple structure, higher efficiency, simplicity and convenience in backwashing, stability in operation and the like.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view illustrating a biochemical reaction apparatus in which a fixed bed and a fluidized bed are intermittently operated according to an exemplary embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. an anoxic reaction zone; 11. a first bio-filler layer; 12. a first aeration device; 13. a first water distribution device; 14. a water mixing tank; 15. a liquid level monitoring device; 111. a valve; 101. a main air conveying line; 102. a water inlet pipe;
20. a first aerobic reaction zone; 21. a second aeration device; 22. a second bio-filler layer; 23. a second water distribution device; 201. a first water outlet pipeline; 211. a first flow regulating device;
30. a second aerobic reaction zone; 31. a third aeration device; 32. a third biological filler layer; 33. a third water distribution device; 301. a second water outlet pipeline; 311. a second flow regulating device;
40. a first blower device; 41. a second blower device; 42. a power conditioning device;
50. an intermediate water storage device; 501. a return line; 51. a reflux pump; 511. a water outlet; 512. a sewage draining outlet.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail with reference to examples.
As described in the background art, the existing biochemical treatment device has the problems of long treatment period and high working strength in the process of treating sewage. In order to solve the above technical problems, the present application provides a biochemical reaction apparatus in which a fixed bed and a fluidized bed are intermittently operated, as shown in fig. 1, the biochemical reaction apparatus comprising: the device comprises an air main conveying pipeline 101, a first air blowing device 40, a second air blowing device 41, a valve 111, and an anoxic reaction zone 10, a first aerobic reaction zone 20 and a second aerobic reaction zone 30 which are sequentially communicated. The main air conveying pipeline 101 is provided with a first air outlet, a second air outlet and a third air outlet in sequence. The first air outlet is communicated with the anoxic reaction zone 10 through a first air conveying pipeline, the second air outlet is communicated with the first aerobic reaction zone 20 through a second air conveying pipeline, and the third air outlet is communicated with the second aerobic reaction zone 30 through a third air conveying pipeline. The valve 111 is used for controlling the opening and closing of the first air conveying pipeline, and the valve 111 is opened only during backwashing; the first blowing device 40 is used for selectively blowing air into the main air conveying pipeline 101, and the opening and the closing of the first blowing device 40 are consistent with the opening and the closing of the valve 111; and the second blowing device 41 is in a normally open state for blowing air into the main air supply line 101.
The biochemical reaction device comprises an anoxic reaction zone 10, a first aerobic reaction zone 20 and a second aerobic reaction zone 30, and all the zones are communicated in series. In normal operation, the first air conveying pipeline is closed (the valve 111 is closed), the second air conveying pipeline and the third air conveying pipeline are opened, the biochemical reaction device treats sewage in a fixed bed mode, and the second air blowing device 41 blows air into the main air conveying pipeline 101; when the resistance in the anoxic reaction zone 10, the first aerobic reaction zone 20 and the second aerobic reaction zone 30 becomes large, the first air conveying pipeline is opened (the valve 111 is opened), and simultaneously the first air blowing device 40 is started, so that a large amount of air is introduced into the anoxic reaction zone 10, the first aerobic reaction zone 20 and the second aerobic reaction zone 30 to convert the biochemical reaction device from a fixed bed to a fluidized bed, and after mutual scrubbing and collision, the biochemical reaction device recovers the fixed bed mode. When the biochemical reaction device is used for treating sewage, the biochemical reaction device can be freely switched between a fixed bed mode and a fluidized bed mode, so that the problem that the resistance of each reaction area greatly influences the sewage treatment efficiency is effectively solved, and meanwhile, the reactor has the advantages of simple structure, higher efficiency, simplicity and convenience in backwashing, stability in operation and the like.
The anoxic reaction zone 10, the first aerobic reaction zone 20, and the second aerobic reaction zone 30 may adopt a structure commonly used in the art. In a preferred embodiment, the anoxic reaction zone 10 comprises a first biological filler layer 11, a first aeration device 12 and a first water distribution device 13, the anoxic reaction zone 10 is provided with a sewage to be treated inlet and a first water outlet, the first water distribution device 13 is communicated with the sewage to be treated inlet through a first water inlet pipeline, the first aeration device 12 is communicated with a first air outlet through a first air conveying pipeline, the first biological filler layer 11 comprises a first carrier and anaerobic microorganisms loaded on the first carrier; the first aerobic reaction zone 20 comprises: the second aeration device 21, the second biological packing layer 22 and the second water distribution device 23, the second biological packing layer 22 comprises a second carrier and first aerobic microorganisms loaded on the second carrier, the second water distribution device 23 is communicated with the first water outlet through a first water outlet pipeline 201, and the second aeration device 21 is communicated with the second air outlet through a second air conveying pipeline; the second aerobic reaction zone 30 comprises: a third aeration device 31, a third biological packing layer 32 and a third water distribution device 33, wherein the third biological packing layer 32 comprises a third carrier and second aerobic microorganisms loaded on the third carrier, the third aeration device 31 is communicated with a third air outlet through a third air conveying pipeline, and the third water distribution device 33 is communicated with the first aerobic reaction zone 20 through a second water outlet pipeline 301.
When the resistance is increased, the first air conveying pipeline is opened, meanwhile, the first air blowing device 40 is started, a large amount of air is respectively introduced into the anoxic reaction zone 10, the first aerobic reaction zone 20 and the second aerobic reaction zone 30 through the first air blowing device 40 so that each biological filler expands to be converted into a fluidized bed from a fixed bed, after mutual scrubbing and collision, the biological membrane falls off and is discharged along with discharged water, and then the biochemical reaction device recovers the mode of the fixed bed. And a first biological packing layer, a second biological packing layer and a third biological packing layer are correspondingly filled in the anoxic reaction zone, the first aerobic reaction zone and the second aerobic reaction zone, and target pollutants are removed through metabolism of biological films on the first biological packing layer, the second biological packing layer and the third biological packing layer so as to achieve the purpose of removing the pollutants.
In a preferred embodiment, the inlet for wastewater to be treated is in communication with the inlet pipe 102.
The bio-filler layer is a core structure for treating sewage, and in order to further improve the sewage treatment efficiency and the sewage purification rate of the biochemical reaction apparatus, the packing rates, packing densities, specific surface areas, and the like of the first bio-filler layer 11, the second bio-filler layer 22, and the third bio-filler layer 32 may be preferably selected. In a preferred embodiment, the first biological filler layer 11, the second biological filler layer 22 and the third biological filler layer 32 are respectively and independently selected from the group consisting of a filling rate of more than or equal to 75%, a filler density of 1.05-1.15 and a specific surface area of 400-1500 m2/m3The filler layer. More preferably, the filling volume of the first biological filler layer 11 is 75-90% of the volume of the anoxic reaction zone 10, based on the total volume of the sewage to be treated, and the second biological fillerThe packed volume of the layer 22 is 75% to 90% of the volume of the first aerobic reaction zone 20 and the packed volume of the third biofilm layer 32 is 75% to 90% of the volume of the second aerobic reaction zone 30.
The carrier used in the bio-filler layer can be selected from the types commonly used in the field. In a preferred embodiment, the first carrier, the second carrier and the third carrier are each independently selected from one or more of a polyethylene suspension filler, a high density polyethylene suspension filler, a polypropylene suspension filler and a polyurethane foam suspension filler. Compared with other carriers, the carrier is favorable for improving the wear resistance of the biological filler and the loading capacity of microorganisms, so that the sewage treatment efficiency of the biochemical reaction device is favorably improved.
In order to store the water obtained after the treatment in the second aerobic reaction zone 30, it is preferable that the biochemical reaction apparatus further comprises an intermediate water storage device 50, as shown in fig. 1, which is provided with a water outlet 511 and a sewage discharge outlet 512, and the intermediate water storage device 50 is communicated with the mixed water tank 14 through a return pipe 501.
Preferably, the biochemical reaction apparatus further includes a return pump 51, and the return pump 51 is disposed on the return line 501.
In order to increase the purification rate of the sewage, it is necessary to return part of the water in the intermediate water storage tank to the anoxic reaction zone 10 for purification again. In a preferred embodiment, as shown in fig. 1, the anoxic reaction zone 10 further comprises a water mixing tank 14 disposed on the first water inlet pipeline, the water mixing tank 14 is provided with a sewage inlet to be treated and a water return port, and the water return port is communicated with the intermediate water storage device 50 through a water return pipeline.
In a preferred embodiment, as shown in FIG. 1, the biochemical reaction apparatus further comprises a liquid level monitoring device 15 and a power regulating device 42. Wherein the liquid level monitoring device 15 is used for monitoring the liquid level in the water mixing tank 14; the power adjusting device 42 is used for adjusting the power of the first blowing device 40 and the second blowing device 41. The liquid level monitoring device 15 is arranged to conveniently grasp the change of the bed resistance of the biological filler bed layer, so that the opening and closing of the first air blowing device 40 can be controlled more accurately, and meanwhile, the switching process of a fixed bed mode and a fluidized bed mode can be simplified by adjusting the power of the first air blowing device 40 through the power adjusting device 42, so that the sewage treatment efficiency and the purification rate are further improved.
In a preferred embodiment, as shown in FIG. 1, the biochemical reaction device further comprises a first flow regulating device 211 and a second flow regulating device 311, wherein the first flow regulating device 211 is disposed on the second air conveying pipeline, and the second flow regulating device 311 is disposed on the third air conveying pipeline. The air flow in the second air conveying pipeline and the air flow in the third air conveying pipeline can be adjusted through the first flow adjusting device 211 and the second flow adjusting device 311, so that the oxygen content in the first aerobic zone and the second aerobic zone can be better controlled, and the removal rate of pollutants can be further improved.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
when the biochemical reaction device is used for treating sewage, the biochemical reaction device can be freely switched between a fixed bed mode and a fluidized bed mode, so that the problem that the sewage treatment efficiency is greatly influenced by the resistance of a biological filler film layer is effectively solved, and meanwhile, the reactor has the advantages of simple structure, higher efficiency, simplicity and convenience in backwashing, stability in operation and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A biochemical reaction apparatus in which a fixed bed and a fluidized bed are intermittently operated, comprising:
the air-conditioning system comprises an air main conveying pipeline (101), wherein the air main conveying pipeline (101) is sequentially provided with a first air outlet, a second air outlet and a third air outlet;
an anoxic reaction zone (10), a first aerobic reaction zone (20) and a second aerobic reaction zone (30) are sequentially communicated, the first air outlet is communicated with the anoxic reaction zone (10) through a first air conveying pipeline, the second air outlet is communicated with the first aerobic reaction zone (20) through a second air conveying pipeline, and the third air outlet is communicated with the second aerobic reaction zone (30) through a third air conveying pipeline;
a valve (111) for controlling the opening and closing of the first air delivery line and opening the valve (111) when backwashing;
a first blowing device (40), wherein the first blowing device (40) is used for selectively blowing air into the main air conveying pipeline (101), and the opening and the closing of the first blowing device (40) are consistent with the opening and the closing of the valve (111);
a second blowing device (41), wherein the second blowing device (41) is in a normally open state and is used for blowing air into the main air conveying pipeline (101).
2. The biochemical reaction device according to claim 1, wherein the anoxic reaction zone (10) comprises a first biological packing layer (11), a first aeration device (12) and a first water distribution device (13), the anoxic reaction zone (10) is provided with a wastewater to be treated inlet and a first water outlet, the first water distribution device (13) is communicated with the wastewater to be treated inlet through a first water inlet pipeline, the first aeration device (12) is communicated with the first air outlet through a first air delivery pipeline, and the first biological packing layer (11) comprises a first carrier and anaerobic microorganisms loaded on the first carrier;
said first aerobic reaction zone (20) comprising: the second aeration device (21), the second biological packing layer (22) and the second water distribution device (23), the second biological packing layer (22) comprises a second carrier and first aerobic microorganisms loaded on the second carrier, the second water distribution device (23) is communicated with the first water outlet through a first water outlet pipeline (201), and the second aeration device (21) is communicated with the second air outlet through a second air conveying pipeline;
said second aerobic reaction zone (30) comprising: a third aeration device (31), a third biological filler layer (32) and a third water distribution device (33), wherein the third biological filler layer (32) comprises a third carrier and second aerobic microorganisms loaded on the third carrier, the third aeration device (31) is communicated with the third air outlet through a third air conveying pipeline, and the third water distribution device (33) is communicated with the first aerobic reaction zone (20) through a second water outlet pipeline (301).
3. The biochemical reaction device according to claim 2, wherein the first biological filler layer (11), the second biological filler layer (22) and the third biological filler layer (32) are respectively and independently selected from the group consisting of a filling rate of not less than 75%, a filler density of 1.05-1.15, and a specific surface area of 400-1500 m2/m3Of the material layer (c).
4. The biochemical reaction apparatus according to claim 2 or 3, further comprising an intermediate water storage device (50), wherein the intermediate water storage device (50) is in communication with the second aerobic reaction zone (30) for storing water obtained after treatment in the second aerobic reaction zone (30).
5. The biochemical reaction apparatus according to claim 4, wherein the anoxic reaction zone (10) further comprises a water mixing tank (14) disposed on the first water inlet pipeline, the water mixing tank (14) is provided with the sewage to be treated inlet and a water return port, and the water return port is communicated with the intermediate water storage device (50) through a water return pipeline.
6. The biochemical reaction device according to claim 5, further comprising:
a liquid level monitoring device (15), the liquid level monitoring device (15) being used for monitoring the liquid level in the water mixing tank (14); and
a power regulating device (42) for regulating the power of the first blowing device (40) and the second blowing device (41).
7. The biochemical reaction apparatus according to claim 2, wherein the filling volume of the first bio-filler layer (11) is 75% to 90% of the volume of the anoxic reaction zone (10), the filling volume of the second bio-filler layer (22) is 75% to 90% of the volume of the first aerobic reaction zone (20), and the filling volume of the third bio-filler layer (32) is 75% to 90% of the volume of the second aerobic reaction zone (30).
8. The biochemical reaction device according to claim 7, further comprising:
a first flow regulating device (211), the first flow regulating device (211) being disposed on the second air delivery duct;
a second flow regulating device (311), the second flow regulating device (311) being disposed on the third air delivery conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021026197.3U CN212924564U (en) | 2020-06-05 | 2020-06-05 | Biochemical reaction device with intermittently operated fixed bed and fluidized bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021026197.3U CN212924564U (en) | 2020-06-05 | 2020-06-05 | Biochemical reaction device with intermittently operated fixed bed and fluidized bed |
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| CN212924564U true CN212924564U (en) | 2021-04-09 |
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| CN202021026197.3U Active CN212924564U (en) | 2020-06-05 | 2020-06-05 | Biochemical reaction device with intermittently operated fixed bed and fluidized bed |
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