CN113968614A - Multistage synergistic self-circulation anaerobic ammonia oxidation reaction device - Google Patents
Multistage synergistic self-circulation anaerobic ammonia oxidation reaction device Download PDFInfo
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- CN113968614A CN113968614A CN202110711295.3A CN202110711295A CN113968614A CN 113968614 A CN113968614 A CN 113968614A CN 202110711295 A CN202110711295 A CN 202110711295A CN 113968614 A CN113968614 A CN 113968614A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to the technical field of sewage treatment devices, and provides a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, which comprises: the main body is provided with an inlet and an outlet, a main reaction area is arranged in the main body, and a gas-liquid separation area is arranged above the main reaction area; a water body acceleration device connected to the inlet, wherein at least a part of an inner diameter of the water body acceleration device is reduced along a flow direction of the water body; the ascending guide pipe is arranged in the main body, a main reaction area is formed between the ascending guide pipe and the main body, the water inlet end of the ascending guide pipe is arranged corresponding to the water outlet end of the water body accelerating device, and the end of the ascending guide pipe corresponding to the water body accelerating device is provided with a first notch; the aeration device is arranged in the main reaction zone; the water inlet end of the gas-liquid separation zone is communicated with the main reaction zone, and the water outlet end of the gas-liquid separation zone is communicated with the outlet. This multistage self-loopa anaerobic ammonium oxidation reaction unit in coordination, the water distribution is more even, is favorable to anaerobic ammonium oxygen bacterium's growth, improves water purification efficiency.
Description
Technical Field
The invention relates to the technical field of sewage treatment devices, in particular to a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device.
Background
The anaerobic ammonia oxidation technology is a current shortcut biological denitrification process and is known as a sewage denitrification process with the most prospect. Anammox is performed under anoxic conditions with Nitrite (NO)2 -) Introduction of ammonia (NH) as an electron acceptor4 +) Conversion to nitrogen (N)2) Simultaneously fixing CO by taking nitrite as electron donor2And produce Nitrate (NO)3 -) The biological process of (1).
When the reactor distributes water, branch pipe type point-to-point water distribution is generally adopted, namely water distribution is carried out through a main pipe connected with an external pump body and a plurality of branch pipes connected with the main pipe, wherein water passing holes are formed in the pipe wall of each branch pipe, however, the water distribution mode can cause the water passing holes in the branch pipes to be easily blocked, so that the water distribution is not uniform, the phenomenon of local absolute anaerobism is easily generated in the reactor, the growth of anaerobic ammonium-oxygen bacteria is not facilitated, even the anaerobic ammonium-oxygen bacteria is disabled, and the water purification efficiency is reduced; moreover, the water loss caused by the water distribution mode is large, the pump body has higher lift and large energy consumption.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the multi-stage cooperative self-circulation anaerobic ammonia oxidation reaction device in the prior art adopts branch pipe type point-to-point water distribution, so that water passing holes in the water distribution pipes are easy to block, the water distribution is uneven, the water loss is large, the pump body has high lift, and the energy consumption is large.
Therefore, the invention provides a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, which comprises: the main body is provided with an inlet and an outlet, a main reaction area is arranged in the main body, and a gas-liquid separation area is arranged above the main reaction area; a water body acceleration device connected to the inlet, wherein at least a part of an inner diameter of the water body acceleration device is reduced along a flow direction of the water body; the ascending guide pipe is arranged in the main body, the main reaction area is formed between the ascending guide pipe and the main body, the water inlet end of the ascending guide pipe is arranged corresponding to the water outlet end of the water body accelerating device, and a first notch is formed in one end of the ascending guide pipe corresponding to the water body accelerating device; aeration means disposed in said primary reaction zone adapted to provide oxygen to microorganisms in said primary reaction zone; the water inlet end of the gas-liquid separation zone is communicated with the main reaction zone, and the water outlet end of the gas-liquid separation zone is communicated with the outlet.
Further, the water body accelerating device comprises: a water ejector; the water ejector is communicated with the inlet, and at least one part of the water ejector is arranged in a conical shape along the flowing direction of the water body; an ascending guide pipe cover is buckled above the water ejector, and the first gap is formed between the ascending guide pipe and the water ejector.
Further, the water body acceleration device also comprises at least one acceleration spray pipe; at least one part of the accelerating jet pipe is arranged in a conical shape along the flowing direction of the water body; the ascending guide pipe cover is buckled above the accelerating spray pipe, and a first notch is formed between the ascending guide pipe and the accelerating spray pipe; the accelerating spray pipe cover is buckled above the water ejector.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device also comprises: a hydraulic mixing cylinder; the cover is buckled outside the ascending guide pipe and positioned in front of a water flow path in the hydraulic mixing cylinder, and a second gap is formed between the hydraulic mixing cylinder and the ascending guide pipe; a hydraulic main mixing area is formed in the area between the hydraulic mixing cylinder and the upward guide pipe; the area between the hydraulic mixing cylinder and the main body forms the main reaction area, and the hydraulic main mixing area is communicated with the main reaction area through the second gap.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises a gas-liquid separation chamber plate, a gas-liquid separation zone is formed between the gas-liquid separation chamber plate and the main body, the bottom of the gas-liquid separation chamber plate extends and inclines towards the direction close to the side wall of the main body, and a first gap is reserved between the bottom of the gas-liquid separation chamber plate and the main body.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises a gas stripping lifting guide plate which is arranged on the inner side of the gas-liquid separation chamber plate, the top end of the gas stripping lifting guide plate extends towards the direction far away from the water body accelerating device, and a transition area is formed between the gas stripping lifting guide plate and the gas-liquid separation chamber plate; the bottom of the gas stripping lifting guide plate is connected with the water ejector, and the main reaction zone is formed in the area between the gas stripping lifting guide plate and the hydraulic mixing cylinder; the area between the gas stripping riser and the main body forms a first floc recovery channel.
Furthermore, the outer side wall of the air-lifting guide plate is provided with a plurality of water through holes, and the water through holes are located at the edge of the top opening of the air-lifting guide plate.
Furthermore, the inner side wall of the gas stripping lifting guide plate is provided with a plurality of sludge reflecting plates, and one ends of the sludge reflecting plates extend towards the inside of the gas stripping lifting guide plate.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device also comprises a three-phase separator, the three-phase separator is arranged in the gas-liquid separation zone, a water collecting zone is formed in a region between the three-phase separator and the top of the main body, and a floc filtering zone is formed in a region between the three-phase separator and the bottom of the gas-liquid separation chamber plate; the three-phase separator orientation one side at the top of main part is provided with the separation trachea, the tracheal inlet end of separation with the end of giving vent to anger of three-phase separator links to each other, the tracheal end of giving vent to anger of separation stretch to the transition zone.
Furthermore, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device also comprises a plurality of inner return pipes, wherein the water inlet ends of the inner return pipes are communicated with the floc filtering layer area, and the water outlet ends of the inner return pipes are communicated with the water inlet end of the acceleration spray pipe; the pipe wall of the water inlet end of the inner return pipe is provided with a plurality of water inlet holes.
Furthermore, a hydraulic guide plate is arranged in the floc filtering layer area, a second floc recovery channel is formed between the hydraulic guide plate and the inner side wall of the main body, and the second floc recovery channel is communicated with the first floc recovery channel; a second gap is reserved between the hydraulic guide plate and the gas-liquid separation chamber plate; and a third gap is reserved between the hydraulic guide plate and the gas stripping lifting guide plate.
Further, the inside wall of main part is provided with the water-collecting sheet, the water-collecting sheet is located in the gas-liquid separation district, the water-collecting sheet with the regional water-collecting area that forms between the main part, the water-collecting area with the export is linked together.
Furthermore, the aeration device comprises a plurality of aeration pipes, a plurality of aeration heads are arranged at the air outlet ends of the aeration pipes, and the air inlet ends of the aeration pipes are communicated with an external air source.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device also comprises a sludge return pipe, one end of the sludge return pipe is communicated with the water ejector, and the other end of the sludge return pipe is communicated with the bottom of the main body.
Furthermore, the water outlet end of the ascending guide pipe is in a diffusion shape along the flowing direction of the water body.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises a sludge discharge pipe, wherein the inlet end of the sludge discharge pipe is communicated with the bottom of the main reaction area, the outlet end of the sludge discharge pipe extends out of the main body, and the outlet end of the sludge discharge pipe is suitable for being connected with sludge storage equipment.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises an emptying pipe, wherein the bottom of the main body is communicated with the outside of the main body, and an inlet of the emptying pipe is located at the lowest position of the bottom of the main body.
Further, an exhaust device is arranged on the main body.
Further, the bottom of the main body is in a conical structure.
The technical scheme of the invention has the following advantages:
1. according to the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention, the water body accelerating device and the ascending guide pipe are arranged in the main body, the water body flowing into the main body is accelerated by the water body accelerating device, and the water body is introduced into the main body under the injection of the ascending guide pipe to participate in stirring and mixing. Moreover, the water loss can be reduced, the pump lift of the pump body is reduced, and the energy consumption is reduced.
2. According to the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, after water enters the main body, the water is mixed with water in the hydraulic main mixing region, the anaerobic fluidized bed region, the transition region and the gas-liquid separation region. The raw water is diluted, and the biological selection function is also realized. The impact load resistance of the vertical anaerobic reactor is improved. And multiple strands of water are cooperated, so that the ascending flow rate is increased, and the energy consumption of the pump body is reduced.
3. According to the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, the gas stripping lifting guide plate is arranged in the main body, the gas stripping principle is utilized to drive the water body to lift, and energy consumption is saved.
4. According to the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, multi-region water flows are driven through multistage cooperation, the ascending flow velocity is improved, microbial strains are in a suspended state, and full reaction of granular thalli and pollutants in water is facilitated.
5. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention has the advantages that the nitrosation and anaerobic ammonia oxidation are carried out in the same reactor, the structure is compact, and the occupied area is small. And avoids nitrosation over-reaction and influences the composition of an ammonia oxidation matrix.
6. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention has the advantages that jet flow water distribution is realized, the blockage is not easy, and the hydraulic mixing is uniform without dead angles.
7. The bottom of the main body of the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device is of an inverted cone structure, and calcified and inorganic sludge can be discharged at any time.
8. According to the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, the internal reflux pipe is arranged in the transition region, forced internal reflux is realized through the water ejector, external power is not needed, and energy consumption is reduced; and the nitrite generated by aeration can be returned to the main reaction area by the inner return pipe, which is beneficial to the completion of anaerobic ammonia oxidation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a multistage cooperative self-circulation anaerobic ammonium oxidation reaction device provided in an embodiment of the invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic view of another partial structure of FIG. 1;
FIG. 4 is a top view of the three-phase separator of FIG. 1;
fig. 5 is a top view of the aeration apparatus of fig. 1.
Description of reference numerals:
1-a body; 2-a water ejector; 3-accelerating the spray pipe;
4-an ascending guide pipe; 5-a hydraulic mixing cylinder; 6-gas stripping of the lifting guide plate;
7-gas-liquid separation chamber plate; 8-a three-phase separator; 9-a gas-liquid separation zone;
10-a water collection plate; 11-separation of the gas pipe; 12-floe filtration zone;
13-a transition zone; 14-a primary reaction zone; 15-inlet;
16-an outlet; 17-a sludge discharge pipe; 18-evacuation pipe;
19-a hydraulic primary mixing zone; 20-a first notch; 21-a second notch;
22-a first floc recovery channel; 23-a second floe recovery channel;
24-a first gap; 25-a second gap; 26-a third gap;
27-a medicine feeding pipe; 28-a hydraulic guide plate; 29-sludge reflecting plate;
30-a water collecting area; 31-manhole; 32-inner return pipe;
33-a sludge return pipe; 34-an aerator pipe; 35-aeration head.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
FIG. 1 is a schematic structural diagram of a multistage cooperative self-circulation anaerobic ammonium oxidation reaction device provided in an embodiment of the invention; as shown in FIG. 1, this example provides a multi-stage cooperative self-circulation anaerobic ammonia oxidation reactor, wherein the anaerobic ammonia oxidation process utilizes microorganisms in anaerobic ammonia oxidationUnder the condition of NH4 +As electron donors, with NO2 -As an electron acceptor, reacting NH4 +Or NO2 -By direct conversion to N2Thereby realizing the removal of two nitrogen pollutants simultaneously.
In the present embodiment, the main body 1 is a vertical cylindrical tank, and the shape of the main body 1 itself is not limited, but preferably, as shown in fig. 1, the bottom of the tank is a tapered structure, and the water storage operation in the tank can be facilitated by the above arrangement. An inlet 15 is arranged at the position of the main body 1 close to the bottom and used for water inlet; the body 1 is provided with an outlet 16 near the top, and the body of water after purification flows out of the outlet 16.
The inside of main part 1 is provided with water dart 2, and the water inlet of water dart 2 is linked together with the entry 15 of main part 1, and the top delivery port cover of water dart 2 is equipped with spray tube 3 with higher speed, and the top delivery port cover of spray tube 3 with higher speed is equipped with upward guide tube 4, and the top play water gauze mask of upward guide tube 4 is buckled hydraulic mixing section of thick bamboo 5. The inside of main part 1 is provided with air stripping and rises baffle 6, and whole air stripping rises baffle 6 and is located the periphery of water mixing section of thick bamboo 5, and the bottom that air stripping rises baffle 6 can be with the lateral wall sealing connection of water dart 2, and the top that air stripping rises baffle 6 is open structure.
FIG. 2 is a schematic view of a portion of the structure of FIG. 1; as shown in fig. 2, in the present embodiment, a first gap 20 is left between the accelerating nozzle 3 and the ascending guide tube 4, the first gap 20 is disposed at the bottom position of the ascending guide tube 4, and a second gap 21 is left between the bottom of the hydraulic mixing drum 5 and the air-lifting guide plate 6. The area between the upgoing guide tube 4 and the hydraulic mixing drum 5 forms a hydraulic primary mixing zone 19, and the area between the hydraulic mixing drum 5 and the gas-stripping riser guide 6 forms the primary reaction zone 14. After the water body is sprayed into the accelerating spray pipe 3 through the water injector 2, the water body is accelerated, then enters the ascending guide pipe 4 and is sprayed out from the top of the ascending guide pipe 4, the water body collides with the top of the hydraulic mixing cylinder 5 and then scatters around, and a part of the water body returns to the inside of the ascending guide pipe 4 through the first notch 20 to be mixed with the ascending water body and then participates in stirring again. The other part of the water flows into the main reaction zone 14 from the hydraulic main mixing zone 19 through the second gap 21, and flows out from the top opening of the air-lift lifting guide plate 6 under the influence of the air-lift effect.
The multistage self-loopa anaerobic ammonium oxidation reaction device in coordination that this embodiment provided, be provided with water accelerating device in this main part 1 and go upward stand pipe 4, utilize water accelerating device to accelerate the water that flows into main part 1, and introduce main part 1 internal reference and the stirring to mix with the water under the injection of the stand pipe 4 that goes upward, compare with the point-to-point water distribution mode of branch pipe formula among the prior art, need not to set up a plurality of branch pipes and set up the water hole on the branch pipe, the phenomenon of water hole jam has been avoided crossing, thereby make the water distribution more even, the inside phenomenon of local absolute anaerobism of being difficult to appear of reactor, be favorable to anaerobic ammonium-oxygen bacteria's growth, improve water purification efficiency. Moreover, the water loss can be reduced, the pump lift of the pump body is reduced, and the energy consumption is reduced.
In this embodiment, the aperture above the gas stripping riser guide 6 is smaller than the aperture below, so that the gas generated in the main reaction zone 14 is stripped, and the formation of particle flocs is facilitated.
In this embodiment, a plurality of stages of sludge reflecting plates 29 may be disposed on the inner wall of the gas-stripping lifting guide plate 6, the sludge reflecting plates 29 are all inclined downward, and when the water body flows upward, the water body strikes the sludge reflecting plates 29, so that the larger flocs are broken into smaller flocs.
Specifically, as shown in fig. 1, the reflection plates 29 are oppositely arranged on the opposite side walls of the stripping rising guide plate 6, and the plurality of reflection plates 29 are alternately arranged in the height direction, so that a plurality of vortexes are formed inside the stripping rising guide plate 6, and the dispersion effect of large-volume flocs inside the stripping rising guide plate 6 is effectively improved.
In this embodiment, this air stripping rises and is provided with a plurality of water holes of crossing on the baffle 6 is close to the open outer wall in self top, and partly water is from its uncovered outflow, and another part water flows from the water hole of crossing, and two parts water striking backs are favorable to improving stirring effect.
Fig. 5 is a top view of the aeration apparatus of fig. 1. As shown in fig. 5, in this embodiment, an aeration pipe 34 is disposed in the main reaction zone 14, the distribution of the aeration pipe 34 can be designed according to the requirement, and a plurality of aeration heads 35 are disposed on the pipe wall of the aeration pipe 34. The aeration pipe 34 is connected with an external air source and can provide oxygen required by the reaction for the microorganisms in the main body.
FIG. 3 is a schematic view of another partial structure of FIG. 1; as shown in fig. 3, in the present embodiment, a gas-liquid separation chamber plate 7 is further disposed inside the main body 1, and the gas-liquid separation chamber plate 7 is located at the periphery of the gas-stripping rising guide plate 6 with a certain gap therebetween to form a transition zone 13. The bottom of the gas-liquid separation chamber plate 7 extends toward the inner wall of the main body 1 without contacting with the same, and the region between the two is the first gap 24. The top of the gas-liquid separation chamber plate 7 can be higher than the top of the gas-stripping lifting guide plate 6, so that the water flowing out of the gas-stripping lifting guide plate 6 is prevented from directly entering the water collecting area 30.
FIG. 4 is a top view of the three-phase separator of FIG. 1; as shown in fig. 4, a region formed between the outer wall of the gas-liquid separation chamber plate 7 and the inner wall of the main body 1 is a gas-liquid separation region 9, and a three-phase separator 8 is provided in the gas-liquid separation region 9. The top of the three-phase separator 8 pair is provided with a separation gas pipe 11 for discharging gas, the gas outlet end of the separation gas pipe 11 extends into the transition zone 13, and the water condensed from the gas in the separation gas pipe 11 can flow into the transition zone 13.
In the present embodiment, a water guide plate 28 is disposed below the three-phase separator 8, a second gap 25 is left between the water guide plate 28 and the gas-liquid separation chamber plate 7, and a third gap 26 is left between the end of the water guide plate 28 and the gas-lift rising guide plate 6. The water body flowing out through the opening of the gas stripping lifting guide plate 6 flows into the transition area 13, the water body flowing out from the transition area 13 impacts the hydraulic guide plate 28 and upwards passes through the first gap 24, and flocs in the water body are gathered below the three-phase separator 8 to form a floc filter area 12. A part of the water body passes through the floc filter zone 12 and enters the three-phase separator 8, the three-phase separator 8 separates and discharges the gas carried in the water body, and the water body upwards enters the water collecting zone 30.
In this embodiment, a circle of water collection plate 10 may be disposed on the inner wall of the main body 1 and along the inner wall of the main body 1, an area formed between the water collection plate 10 and the main body 1 is a water collection area 30, and the water that continuously increases flows over the water collection plate 10, enters the water collection area 30, and then flows out from an outlet 16 communicated with the water collection area 30.
A first floc recovery channel 22 is formed between the gas stripping lifting guide plate 6 and the inner wall of the main body 1, a second floc recovery channel 23 is formed between the hydraulic guide plate 28 and the inner wall of the main body 1, the first floc recovery channel 22 is communicated with the second floc recovery channel 23, and the other part of water flowing out from the transition zone 13 sequentially flows to the bottom of the main body 1 through the second floc recovery channel 23 and the first floc recovery channel 22.
In this embodiment, a portion of the floc carried by the water flowing out of the transition region 13 will flow down to the bottom of the main body 1 through the second gap 25.
In this embodiment, an inner return pipe 32 is further disposed in the main body 1, one end of the inner return pipe 32 is located in the gas-liquid separation region 9, and the other end of the inner return pipe is downwardly communicated with the accelerating nozzle 3, and a part of the water in the gas-liquid separation region 9 participates in the stirring process again through the inner return pipe 32. Wherein, the inner return pipe 32 is provided with a plurality of water inlet holes on the pipe wall of the gas-liquid separation zone 9 for water inlet.
In this embodiment, a sludge return pipe 33 is disposed at the bottom of the main body 1, one end of the sludge return pipe 33 can be communicated with the water ejector 2, and the other end extends to the bottom of the main body 1, and the water body and flocs at the bottom of the main body 1 can participate in stirring again through the sludge return pipe 33.
In this embodiment, a plurality of accelerating nozzles 3 may be provided.
In this embodiment, the water outlet end of the ascending guide pipe 4 is in a diffusion shape along the flowing direction of the water body.
In this embodiment, the multistage cooperative self-circulation anammox reaction device further comprises a sludge discharge pipe 17, an inlet 15 end of the sludge discharge pipe 17 is communicated with the bottom of the main reaction zone 14, an outlet 16 end of the sludge discharge pipe 17 extends out of the main body 1, and the outlet 16 end of the sludge discharge pipe 17 is suitable for being connected with a sludge storage device.
In this embodiment, the multistage cooperative self-circulation anammox reactor further includes an evacuation pipe 18 for connecting the bottom of the main body 1 to the outside of the main body 1, and the inlet 15 of the evacuation pipe 18 is located at the lowest position of the bottom of the main body 1.
In this embodiment, the main body 1 is provided with an exhaust device for exhausting the gas of the main body 1.
In this embodiment, the top of the main body 1 is further provided with a manhole 31, which is convenient for maintenance personnel to enter the main body 1.
In this embodiment, the water injector 2 is communicated with the chemical feeding pipe 27, and alkalinity or an inorganic carbon source can be fed into the main body 1 to provide a substrate for the anammox bacteria.
When the device is used, raw water enters the main body 1 from the inlet 15, the water body after being added with the chemicals is sprayed out by the water injector 2, the low pressure generated by the jet flow drives the quasi-effluent of the gas-liquid separation zone 9, the water of the main reaction zone 14 and the water body mixture at the bottom of the main body 1 to jointly enter the hydraulic main mixing zone 19 for mixing and reaction. The hydraulic mixing cylinder 5 has the functions of distinguishing the hydraulic main mixing area 19 and the main reaction area 14 to prevent raw water from directly entering the main reaction area 14, and distributing water to uniformly release the water from the bottom to the periphery to form an ascending flow. The anaerobic ammonium oxidation granular sludge is in a dynamic suspension state, and the contact reaction of pollutants in water and microorganisms is facilitated.
The center of the upper part of the gas stripping lifting guide plate 6 is of a cylinder structure, and sludge reflecting plates 29 are arranged at intervals along the circumferential direction of the inner wall of the cylinder, so that the concentration of granular sludge in the main reaction zone 14 is kept, the lifting flow state is changed, the hydraulic mixing disturbance is increased, and the reaction efficiency is improved. The water from main reaction zone 14 entering transition zone 13 has two rivers, the open overflow in top and the penetration through of water hole, and two water entering transition zone 13 are because the speed and the direction of rivers are different, produce the disturbance, do benefit to gaseous release. The transition zone 13 is an annular section, and the height of the gas-liquid separation chamber plate 7 is higher than that of the gas stripping lifting guide plate 6, so that gas is prevented from driving water to enter the water collecting zone 30.
The water descends from the transition zone 13 and then turns and flows upwards under the three-phase separator 8, and a floc filtering zone 12 is formed in the zone due to the existence of part of floc anaerobic sludge in the water body, so that suspended matters in the water body are reduced after the water body passes through the floc filtering zone 12. Due to the pressure difference formed by the bottom jet flow, the water body uniformly enters the inner return pipe 32 from the water inlet hole on the inner return pipe 32 and then is mixed with the raw water. Then the water body enters a three-phase separator 8 to separate gas, liquid and solid phases, the gas is discharged through a separation gas pipe 11, the water body falls into the upper parts of a transition zone 13 and a main reaction zone 14, and the gas is discharged through a discharge pipe. The water passes through the three-phase separator 8 and enters the annular overflow collection area 30, and finally flows out of the outlet 16.
The flocs separated by the three-phase separator 8 enable the lower floc filtering layer area 12 to be continuously heightened, finally, redundant flocs enter the bottom of the main body 1 through the second floc recovery channel 23 and the first floc recovery channel 22, and are sucked from the sludge return pipe 33 to participate in water inlet mixing. The bottom of the main body 1 is provided with a sludge discharge pipe 17, and mainly discharged is floc which has more inorganic matters and can not be sucked back. The bottom of the body 1 is provided with an evacuation pipe 18, the main function of which is evacuation.
The aeration pipe 34 is externally connected with an air blower, and air is released through an aeration head 35 to provide trace dissolved oxygen for the main reaction zone 14 and create an anoxic environment for anaerobic ammonia oxidizing bacteria.
It should be noted that the low pressure referred to in this application is a relative concept, and the design of each backflow point is based on the bernoulli principle, that is, the pressure at the position where the flow rate of the liquid is high is smaller than that at the position where the flow rate of the liquid is low, and the liquid is forced to backflow by the pressure difference generated between the two positions.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (18)
1. A multistage cooperative self-circulation anaerobic ammonia oxidation reaction device is characterized by comprising:
the reactor comprises a main body (1) provided with an inlet (15) and an outlet (16), a main reaction zone (14) is arranged in the main body, and a gas-liquid separation zone (9) is arranged above the main reaction zone (14);
a water body acceleration device connected to the inlet (15), wherein at least a part of the inner diameter of the water body acceleration device is reduced along the flow direction of the water body;
the ascending guide pipe (4) is arranged in the main body (1), the main reaction zone (14) is formed between the ascending guide pipe (4) and the main body (1), the water inlet end of the ascending guide pipe (4) is arranged corresponding to the water outlet end of the water body accelerating device, and a first notch (20) is arranged at one end of the ascending guide pipe (4) corresponding to the water body accelerating device;
aeration means disposed in said primary reaction zone (14) adapted to provide oxygen to microorganisms within said primary reaction zone (14);
the water inlet end of the gas-liquid separation zone (9) is communicated with the main reaction zone (14), and the water outlet end of the gas-liquid separation zone (9) is communicated with the outlet (16).
2. The multistage cooperative self-circulation anammox reactor according to claim 1, wherein the water acceleration device comprises:
a water ejector (2);
the water ejector (2) is communicated with the inlet (15), and at least one part of the water ejector (2) is arranged in a conical shape along the flowing direction of the water body; the upward guide pipe (4) is covered and buckled above the water ejector (2), and the first gap (20) is formed between the upward guide pipe (4) and the water ejector (2).
3. The multistage cooperative self-circulation anammox reaction device according to claim 2,
the water body acceleration device also comprises at least one acceleration nozzle (3);
along the flowing direction of the water body, at least one part of the accelerating jet pipe (3) is arranged in a conical shape;
the ascending guide pipe (4) is covered and buckled above the accelerating spray pipe (3), and a first gap (20) is formed between the ascending guide pipe (4) and the accelerating spray pipe (3);
the accelerating spray pipe (3) is covered and buckled above the water ejector (2).
4. The multistage cooperative self-circulation anammox reaction device according to claim 3,
further comprising: a hydraulic mixing cylinder (5);
the cover is buckled outside the ascending guide pipe (4) and positioned in front of a water flow path in the hydraulic mixing cylinder (5), and a second gap (21) is formed between the hydraulic mixing cylinder (5) and the ascending guide pipe (4);
a hydraulic main mixing area (19) is formed in the area between the hydraulic mixing cylinder (5) and the upward guide pipe (4);
the area between the hydraulic mixing cylinder (5) and the main body (1) forms the main reaction area (14), and the hydraulic main mixing area (19) is communicated with the main reaction area (14) through the second gap (21).
5. The multistage cooperative self-circulation anammox reaction device according to claim 4,
the gas-liquid separation device is characterized by further comprising a gas-liquid separation chamber plate (7), wherein a gas-liquid separation area (9) is formed between the gas-liquid separation chamber plate (7) and the main body (1), the bottom of the gas-liquid separation chamber plate (7) extends and inclines towards the direction close to the side wall of the main body (1), and a first gap (24) is reserved between the bottom of the gas-liquid separation chamber plate (7) and the main body (1).
6. The multistage cooperative self-circulation anammox reaction device according to claim 5,
the water body acceleration device also comprises a gas stripping lifting guide plate (6) arranged on the inner side of the gas-liquid separation chamber plate (7), the top end of the gas stripping lifting guide plate (6) extends towards the direction far away from the water body acceleration device, and a transition area (13) is formed between the gas stripping lifting guide plate (6) and the gas-liquid separation chamber plate (7);
the bottom of the gas stripping lifting guide plate (6) is connected with the water ejector (2), and the area between the gas stripping lifting guide plate (6) and the hydraulic mixing cylinder (5) forms the main reaction zone (14);
the area between the stripping riser (6) and the main body (1) forms a first floc recovery channel (22).
7. The multistage cooperative self-circulation anammox reaction device according to claim 6,
the outer side wall of the air-lifting guide plate (6) is provided with a plurality of water through holes, and the water through holes are located at the edge of the top opening of the air-lifting guide plate (6).
8. The multistage cooperative self-circulation anammox reaction device according to claim 6,
the inner side wall of the gas stripping lifting guide plate (6) is provided with a plurality of sludge reflecting plates (29), and one ends of the sludge reflecting plates (29) extend towards the inside of the gas stripping lifting guide plate (6).
9. The multistage cooperative self-circulation anammox reaction device according to claim 6,
the device also comprises a three-phase separator (8) which is arranged in the gas-liquid separation zone (9), wherein a water collecting zone (30) is formed in the area between the three-phase separator (8) and the top of the main body (1), and a floc filtering zone (12) is formed in the area between the three-phase separator (8) and the bottom of the gas-liquid separation chamber plate (7);
three-phase separator (8) orientation one side at the top of main part (1) is provided with separation trachea (11), the inlet end of separation trachea (11) with the end of giving vent to anger of three-phase separator (8) links to each other, the end of giving vent to anger of separation trachea (11) stretch to transition district (13).
10. The multistage cooperative self-circulation anammox reaction device according to claim 9,
the flocculation layer structure is characterized by further comprising a plurality of inner return pipes (32), wherein the water inlet ends of the inner return pipes (32) are communicated with the flocculation filter layer area (12), and the water outlet ends of the inner return pipes (32) are communicated with the water inlet end of the acceleration spray pipe (3);
the pipe wall of the water inlet end of the inner return pipe (32) is provided with a plurality of water inlet holes.
11. The multistage cooperative self-circulation anammox reaction device according to claim 9,
a hydraulic guide plate (28) is arranged in the floc filtering zone (12), a second floc recovery channel (23) is formed between the hydraulic guide plate (28) and the inner side wall of the main body (1), and the second floc recovery channel (23) is communicated with the first floc recovery channel (22);
a second gap (25) is reserved between the hydraulic guide plate (28) and the gas-liquid separation chamber plate (7);
and a third gap (26) is reserved between the water guide plate (28) and the gas stripping lifting guide plate (6).
12. The multistage cooperative self-circulation anammox reaction device according to claim 9,
the inner side wall of the main body (1) is provided with a water collecting plate (10), the water collecting plate (10) is located in the gas-liquid separation area (9), a water collecting area (30) is formed in an area between the water collecting plate (10) and the main body (1), and the water collecting area (30) is communicated with the outlet (16).
13. The multistage cooperative self-circulation anammox reaction device according to claim 1,
the aeration device comprises a plurality of aeration pipes (34), a plurality of aeration heads (35) are arranged at the air outlet ends of the aeration pipes (34), and the air inlet ends of the aeration pipes (34) are communicated with an external air source.
14. The multistage cooperative self-circulation anammox reaction device according to claim 2,
and the sludge return pipe (33) is also arranged, one end of the sludge return pipe is communicated with the water ejector (2), and the other end of the sludge return pipe is communicated with the bottom of the main body (1).
15. The multistage cooperative self-circulation anammox reaction device according to claim 1,
the water outlet end of the ascending guide pipe (4) is in a diffusion shape along the flowing direction of the water body.
16. The multistage cooperative self-circulation anammox reaction device according to claim 1,
the reactor is characterized by further comprising a sludge discharge pipe (17), wherein the inlet (15) end of the sludge discharge pipe (17) is communicated with the bottom of the main reaction area (14), the outlet (16) end of the sludge discharge pipe (17) extends out of the main body (1), and the outlet (16) end of the sludge discharge pipe (17) is suitable for being connected with sludge storage equipment.
17. The multistage cooperative self-circulation anammox reaction device according to claim 1,
the device is characterized by further comprising an emptying pipe (18), wherein the bottom of the main body (1) is communicated with the outside of the main body (1), and an inlet (15) of the emptying pipe (18) is located at the lowest position of the bottom of the main body (1).
18. The multistage cooperative self-circulation anammox reaction device according to claim 1,
the bottom of the main body (1) is of a conical structure.
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| CN202110711295.3A CN113968614B (en) | 2021-06-25 | 2021-06-25 | Multistage cooperative self-circulation anaerobic ammonia oxidation reaction device |
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| EP0315233A1 (en) * | 1987-10-08 | 1989-05-10 | Gist-Brocades N.V. | Fluidized bed process and apparatus |
| CN103803694A (en) * | 2013-12-25 | 2014-05-21 | 江苏一环集团有限公司 | Integrated efficient Fenton precipitation device |
| CN109319929A (en) * | 2018-12-14 | 2019-02-12 | 湖南军信环保股份有限公司 | A kind of novel integrated Anammox reaction system |
| CN209456156U (en) * | 2019-01-25 | 2019-10-01 | 河南昊威环保科技有限公司 | A kind of IC reactor of returning aeration |
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2021
- 2021-06-25 CN CN202110711295.3A patent/CN113968614B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315233A1 (en) * | 1987-10-08 | 1989-05-10 | Gist-Brocades N.V. | Fluidized bed process and apparatus |
| CN103803694A (en) * | 2013-12-25 | 2014-05-21 | 江苏一环集团有限公司 | Integrated efficient Fenton precipitation device |
| CN109319929A (en) * | 2018-12-14 | 2019-02-12 | 湖南军信环保股份有限公司 | A kind of novel integrated Anammox reaction system |
| CN209456156U (en) * | 2019-01-25 | 2019-10-01 | 河南昊威环保科技有限公司 | A kind of IC reactor of returning aeration |
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