Anaerobic ammonia oxidation biological membrane culture system and culture method

Abstract

The invention provides an anaerobic ammonia oxidation biological membrane culture system and culture method, and belongs to the technical field of sewage treatment. The culture system comprises a reactor, a storage pool, a driving module, a reciprocating base and a plurality of carrier assemblies, the reactor internally comprises a nitrogen protection area positioned at the upper layer, and a culture area and an operation area positioned at the lower layer; the storage pool is fixed on the peripheral wall of the reactor, and a communication opening communicated with the storage pool is formed in the side wall of the operation area; the multiple carrier assemblies are installed in the culture area, the reciprocating base is installed in the storage pool, the driving module is fixed to the nitrogen protection area, the reciprocating base is used for driving the carrier assemblies to move between the storage pool and the operation area, and the driving module is used for clamping the carrier assemblies to move between the culture area and the reciprocating base located in the operation area. According to the application, the culture system is used for pre-culturing the anaerobic ammonium oxidation biological membrane aiming at different pollution sources, so that the culture time of the anaerobic ammonium oxidation biological membrane is saved, and a sewage treatment system is assisted to be put into production quickly.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to an anaerobic ammonium oxidation biofilm cultivation system and a cultivation method thereof. Background Art

[0002] In the field of engineering applications of anaerobic ammonium oxidation (Anammox) technology, anaerobic ammonium oxidizing bacteria (AnAOB) have problems of slow growth and difficulty in enrichment. Moreover, for different pollution sources, in order to improve the sewage treatment effect, it is generally necessary to adapt to the pollution source for Anammox biofilm cultivation. Therefore, when constructing a sewage treatment system, generally, a complete set of sewage treatment systems is designed for the pollution source first, and then the corresponding pool bodies and pipelines are constructed according to the designed sewage treatment system. For the Anammox biofilm required in the sewage treatment system, after the construction of the pool bodies and pipelines is completed, the pollution source is introduced for cultivating the Anammox biofilm. During the cultivation of the Anammox biofilm, the sewage cannot be effectively treated, which will lead to an extension of the production start-up time of the sewage treatment system.

[0003] In addition, for the Anammox reactor in the sewage treatment system, its maintenance cost increases year by year due to scaling, microbial community imbalance, increasing monitoring requirements, etc. Summary of the Invention

[0004] The purpose of this application is to provide an anaerobic ammonium oxidation biofilm cultivation system and a cultivation method thereof, so as to solve the above-mentioned technical problems existing in the prior art.

[0005] This application is implemented as follows: In a first aspect, an embodiment of this application provides an anaerobic ammonium oxidation biofilm cultivation system, including a reactor, a storage tank, a driving module, a reciprocating base, and a plurality of carrier components; inside the reactor, there are a nitrogen protection area located in the upper layer, a cultivation area and an operation area located in the lower layer. A partition board is arranged between the cultivation area and the operation area. The nitrogen protection area has an air inlet and an air outlet, and the cultivation area has a liquid inlet and a liquid outlet; the storage tank is fixed on the outer peripheral wall of the reactor. The top of the storage tank is open, and a communication opening communicating with the storage tank is arranged on the side wall of the operation area; a plurality of carrier components are installed in the cultivation area, the reciprocating base is installed in the storage tank, the driving module is fixed in the nitrogen protection area. The reciprocating base is used to move the uncultivated carrier components from the storage tank to the operation area, and move the cultivated carrier components from the operation area to the storage tank. The driving module is used to clamp the carrier components and move them between the cultivation area and the reciprocating base located in the operation area.

[0006] Second aspect: An embodiment of the present application provides an anaerobic ammonium oxidation biofilm cultivation method, which uses the anaerobic ammonium oxidation biofilm cultivation system provided in the embodiment of the first aspect. The specific steps include: placing the uncultivated carrier assembly on the reciprocating base in the storage pool and driving the reciprocating base into the operation area; starting the driving module, clamping the carrier assembly in the operation area, moving the carrier assembly and placing the carrier assembly in the cultivation area; introducing target sewage into the cultivation area, introducing nitrogen into the nitrogen protection area, and introducing sewage into the storage pool; starting the driving module, clamping the cultivated carrier assembly in the cultivation area, moving the carrier assembly and placing the carrier assembly on the reciprocating base in the operation area, driving the reciprocating base to move into the storage pool, and taking out the cultivated carrier assembly.

[0007] The technical solution adopted by the present invention can achieve the following beneficial effects: In this application, the cultivation system is used to pre-cultivate anaerobic ammonium oxidation biofilms specifically for different pollution sources. Compared with the prior art, it saves the cultivation time of anaerobic ammonium oxidation biofilms, thus assisting the rapid commissioning of the sewage treatment system. Moreover, it can directly replace the anaerobic ammonium oxidation reactor in the later stage of the sewage treatment system, reducing the overall maintenance cost of the sewage treatment system.

[0008] In the cultivation system, the interior of the reactor is divided into a nitrogen protection area, a cultivation area, and an operation area. The operation area is connected to the storage pool. The carrier assembly is placed in the cultivation area for the cultivation of anaerobic ammonium oxidation biofilms. In cooperation with the driving module and the reciprocating base, the cultivated carrier assembly is moved to the storage pool for taking out and transferred to the sewage treatment system to treat sewage. The uncultivated carrier assembly is moved from the storage pool to the cultivation area for cultivation, realizing the uninterrupted cultivation of anaerobic ammonium oxidation biofilms.

[0009] And by introducing sewage into the storage pool, the operation area can be sealed. During the process of transferring the carrier assembly, the oxygen content in the cultivation area can be ensured to be stable, avoiding the influence of the external environment on the cultivation area. At the same time, the storage pool filled with sewage can ensure the stability of the environment where the cultivated carrier assembly is located, provide a free and safe operation space for the transfer of the carrier assembly, and also ensure that the carrier assembly can be taken out under a suitable environment for protection. Description of the Drawings

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0011] Figure 1Schematic diagram of the overall structure of the culture system provided by some embodiments of the present application Figure One ; Figure 2 Schematic diagram of the overall structure of the culture system provided by some embodiments of the present application Figure Two ; Figure 3 Cross-section view of the culture system provided by some embodiments of the present application Figure One ; Figure 4 Cross-section view of the culture system provided by some embodiments of the present application Figure Two ; Figure 5 Cross-section view of the reactor and storage tank provided by some embodiments of the present application; Figure 6 Schematic diagram of the internal structure of the reactor and storage tank provided by some embodiments of the present application; Figure 7 Schematic diagram of the overall structure of the carrier assembly provided by some embodiments of the present application; Figure 8 Cross-section view of the carrier assembly provided by some embodiments of the present application; Figure 9 This application is about Figure 8 Detail view of location A; Figure 10 Cross-section view of the carrier assembly and packaging cylinder provided by some embodiments of the present application; Figure 11 This application is about Figure 10 Detail view of location B; Figure 12 Schematic diagram of the structure of the driving module provided by some embodiments of the present application.

[0012] In the figure: 100 - reactor, 110 - nitrogen protection area, 111 - air inlet, 112 - air outlet, 120 - culture area, 121 - liquid inlet, 122 - liquid outlet, 130 - operation area, 140 - partition board, 150 - communication opening, 200 - storage tank, 300 - driving module, 310 - track rack, 320 - fixture, 400 - reciprocating base, 410 - first type of base, 420 - second type of base, 500 - carrier assembly, 510 - load rod, 511 - air hole, 520 - cover plate, 530 - carrier, 540 - airbag, 550 - movable structure, 551 - elastic member, 552 - sliding block, 600 - packaging cylinder, 610 - air release groove, 620 - limiting plate, 700 - mounting base, 710 - inflation groove, 720 - sealing film, 810 - nitrogen delivery pipe, 820 - sewage delivery pipe, 900 - fixing frame, 910 - mounting hole. Detailed implementation manners

[0013] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope protected by the present invention.

[0014] An embodiment of the present application provides an anaerobic ammonium oxidation biofilm cultivation system, which includes a reactor 100, a storage tank 200, a driving module 300, a reciprocating base 400, and a plurality of carrier components 500.

[0015] The reactor 100 serves as the main container for anaerobic ammonium oxidation biofilm cultivation. Its interior is hollow. The interior of the reactor 100 includes a nitrogen protection area 110 located in the upper layer, a cultivation area 120 and an operation area 130 located in the lower layer. The reactor 100 is placed on a horizontal plane during use. A partition plate 140 is provided between the cultivation area 120 and the operation area 130, and the partition plate 140 separates the cultivation area 120 and the operation area 130. The nitrogen protection area 110 has an air inlet 111 and an air outlet 112. Nitrogen enters the nitrogen protection area 110 through the air inlet 111 and is discharged through the air outlet 112, providing a cultivation environment for the anaerobic ammonium oxidation biofilm. The cultivation area 120 has a liquid inlet 121 and a liquid outlet 122. The target sewage is discharged into the cultivation area 120 through the liquid inlet 121 and discharged through the liquid outlet 122. The specific positions of the air inlet 111, the air outlet 112, the liquid inlet 121, and the liquid outlet 122 can be referred to Figure 1 and Figure 2 as shown.

[0016] The storage tank 200 is fixed to the outer peripheral wall of the reactor 100, and the top of the storage tank 200 is open. The operator can operate the interior of the storage tank 200 through the top opening of the storage tank 200. A communication opening 150 communicating with the storage tank 200 is provided on the side wall of the operation area 130, and the interior of the storage tank 200 communicates with the operation area 130. The side wall of the operation area 130 refers to the side wall of the reactor 100 corresponding to the operation area 130.

[0017] A plurality of carrier components 500 are installed in the cultivation area 120, and the carrier components 500 are cultivated in the cultivation area 120. The reciprocating base 400 is installed in the storage tank 200, and the driving module 300 is fixed in the nitrogen protection area 110. Actually, the driving module 300 is fixed to the inner wall surface of the reactor 100 corresponding to the nitrogen protection area 110.

[0018] The reciprocating base 400 reciprocates between the storage tank 200 and the operation area 130. The reciprocating base 400 is used to move the uncultured carrier assembly 500 from the storage tank 200 to the operation area 130, and move the cultured carrier assembly 500 from the operation area 130 to the storage tank 200. The driving module 300 is used to clamp the carrier assembly 500 and move it between the culture area 120 and the reciprocating base 400 located in the operation area 130.

[0019] A partition plate 140 is provided between the operation area 130 and the culture area 120. The reciprocating base 400 cannot horizontally move the carrier assembly 500 from the operation area 130 to the culture area 120. Therefore, an additional driving module 300 needs to be provided. The driving module 300 is used to clamp the carrier assembly 500. The nitrogen protection area 110 provides a moving space for the driving module 300, facilitating the driving module 300 to clamp the carrier assembly 500 and change positions between the operation area 130 and the culture area 120 through the nitrogen protection area 110.

[0020] After the anaerobic ammonium oxidation biofilm is cultured on the surface of the carrier assembly 500, the carrier assembly 500 needs to be taken out and transferred to a sewage treatment system that needs to carry out sewage treatment. The specific taking-out steps are as follows: First, use the driving module 300 to clamp the cultured carrier assembly 500, drive the carrier assembly 500 to rise to the nitrogen protection area 110, then move the carrier assembly 500 above the operation area 130, lower the carrier assembly 500 into the operation area 130, place the carrier assembly 500 on the reciprocating base 400 in the operation area 130. The reciprocating base 400 moves to drive the carrier assembly 500 to move into the storage tank 200. The operator takes out the cultured carrier assembly 500 through the top opening of the storage tank 200 and transfers it to the sewage treatment system.

[0021] After the cultured carrier assembly 500 is taken out, an uncultured carrier assembly 500 needs to be placed in the empty space to make full use of the culture system and achieve continuous cultivation of the anaerobic ammonium oxidation biofilm. The specific steps are as follows: The operator places the uncultured carrier assembly 500 on the reciprocating base 400 at the bottom of the storage tank 200 through the top opening of the storage tank 200. The reciprocating base 400 moves towards the operation area 130 to move the carrier assembly 500 to the operation area 130. The driving module 300 clamps the carrier assembly 500, drives the carrier assembly 500 to rise to the nitrogen protection area 110, then moves the carrier assembly 500 above the culture area 120, and lowers the carrier assembly 500 into the culture area 120.

[0022] In the embodiment of the present application, the interior of the reactor 100 is partitioned into a nitrogen protection area 110, a cultivation area 120, and an operation area 130. The operation area 130 is communicated with the storage tank 200. By the cooperation of the reciprocating base 400 and the driving module 300, the replacement of the carrier assembly 500 in the cultivation area 120 is completed, realizing the uninterrupted cultivation of the anaerobic ammonium oxidation biofilm, and providing a basis for the replacement of the carrier assembly 500 in the later-stage sewage treatment system.

[0023] The cultivation system provided by the embodiment of the present application can pre-cultivate the anaerobic ammonium oxidation biofilm specifically for different pollution sources. During the construction stage of the sewage treatment system, the anaerobic ammonium oxidation biofilm is cultivated. After the construction of the sewage treatment system is completed, the anaerobic ammonium oxidation biofilm cultivated by the cultivation system can be used to treat sewage, saving the cultivation time of the anaerobic ammonium oxidation biofilm compared with the prior art, thus shortening the commissioning time of the sewage treatment system and assisting the sewage treatment system to be commissioned quickly.

[0024] After the cultivated carrier assembly 500 is taken out, a new carrier assembly 500 can be put into the cultivation system. When the anaerobic ammonium oxidation reactor in the sewage treatment system needs to be maintained in the later stage, the cultivated carrier assembly 500 in the cultivation system can be directly used to replace the anaerobic ammonium oxidation reactor, thereby saving maintenance time and reducing the overall maintenance cost of the sewage treatment system.

[0025] Moreover, in the cultivation system provided by the embodiment of the present application, the operation area 130 is communicated with the storage tank 200. By introducing the corresponding sewage into the storage tank 200, when the cultivated carrier assembly 500 is taken out from the cultivation area 120, the carrier assembly 500 can be prevented from being polluted by the external environment. At the same time, the sewage in the storage tank 200 fills the operation area 130 at the same time, and can seal the communication opening 150 between the operation area 130 and the storage tank 200, avoiding the influence of the external environment on the cultivation area 120, keeping the oxygen content in the cultivation area 120 stable, and at the same time, the nitrogen protection area 110 is also isolated from the external environment. During the process of transferring the cultivated carrier assembly 500, a free and safe operation space is provided for the transfer of the carrier assembly 500. The cultivated carrier assembly 500 is taken out in the storage tank 200, and the storage tank 200 is filled with sewage, and the sewage is adapted to the anaerobic ammonium oxidation biofilm on the surface of the carrier assembly 500, ensuring that the carrier assembly 500 can be taken out under the adapted environment for protection.

[0026] During the cultivation process of the anaerobic ammonium oxidation biofilm, nitrogen needs to be introduced into the nitrogen protection area 110. To save costs, nitrogen can be introduced intermittently. During the period when nitrogen is not introduced, a membrane structure is used to cover the surface of the sewage in the cultivation area 120.

[0027] In some preferred embodiments, in the depth direction of the reactor 100, the top end of the isolation plate 140 is higher than the upper edge of the communication opening 150, as shown in reference Figure 3 and Figure 5 . After sewage is introduced into the storage pool 200 and the operation area 130, when the sewage seals the communication opening 150, the sewage in the operation area 130 can be lower than the top end of the isolation plate 140, and the sewage in the operation area 130 and the cultivation area 120 are isolated from each other, which can further ensure the stability of the oxygen content of the sewage in the cultivation area 120.

[0028] In some preferred embodiments, the cultivation system further includes a sewage delivery pipe 820. The inlet of the sewage delivery pipe 820 communicates with the liquid outlet 122 of the cultivation area 120, and the outlet of the sewage delivery pipe 820 communicates with the storage pool 200. The sewage introduced into the storage pool 200 comes from the cultivation area 120, so that the sewage in the operation area 130 and the cultivation area 120 can be as identical as possible, thereby ensuring the stability of the environment where the carrier assembly 500 after cultivation is located, and further improving the stability of the anaerobic ammonium oxidation biofilm formed on the surface of the carrier assembly 500.

[0029] Moreover, the sewage for cultivating the anaerobic ammonium oxidation biofilm in the cultivation system is discharged into the storage pool 200. On the one hand, the utilization rate of the sewage can be improved. On the other hand, no additional sewage inlet equipment needs to be provided for the storage pool 200. By directly connecting the storage pool 200 with the liquid outlet 122 of the cultivation area 120 using the sewage delivery pipe 820, the sewage in the storage pool 200 can be replaced while discharging the sewage in the cultivation area 120. The sewage in both the cultivation area 120 and the storage pool 200 is discharged through the outlet on the storage pool 200, which is beneficial to simplifying the overall structure of the cultivation system and the operation steps of the cultivation system.

[0030] In some preferred embodiments, there are at least two reciprocating bases 400, as shown in reference Figure 6 . At least one reciprocating base 400 is used to move the uncultivated carrier assembly 500 from the storage pool 200 to the operation area 130, and at least one reciprocating base 400 is equipped with a packaging cylinder 600 for moving the cultivated carrier assembly 500 from the operation area 130 to the storage pool 200. The packaging cylinder 600 is used to accommodate the cultivated carrier assembly 500.

[0031] In some specific embodiments, for the cultivated carrier assembly 500 and the uncultivated carrier assembly 500, the specific structures of the corresponding reciprocating bases 400 installed thereon are different. As shown in reference Figure 6 , the reciprocating base 400 is divided into a first type of base 410 and a second type of base 420. For the uncultivated carrier assembly 500, it is directly installed on the first type of base 410, as shown in reference Figure 3 and Figure 4As shown, it is driven by the first type of base 410 and moves from the storage pool 200 to the operation area 130. For the carrier assembly 500 that has completed cultivation, the second type of base 420 can be used. Refer to Figure 6 As shown, the second type of base 420 is used to cooperate with the packaging cylinder 600. The packaging cylinder 600 can be arranged on the second type of base 420. While transferring the carrier assembly 500 from the cultivation area 120 to the operation area 130, the cultivated carrier assembly 500 can be placed in the packaging cylinder 600 to complete the storage of the carrier assembly 500. Moreover, the packaging cylinder 600 is located in the storage pool 200 and the operation area 130, and the sewage in the storage pool 200 and the operation area 130 can be introduced into the packaging cylinder 600 to maintain the stability of the external environment corresponding to the cultivated carrier assembly 500.

[0032] The packaging cylinder 600 is of a cylindrical structure. The bottom of the packaging cylinder 600 is fixed to the second type of base 420, and the top is open for the carrier assembly 500 to enter. The packaging cylinder 600 needs to move back and forth between the operation area 130 and the storage pool 200 through the communication opening 150, and the water level in the storage pool 200 is higher than the communication opening 150. Therefore, the sewage will fill into the packaging cylinder 600.

[0033] In some preferred embodiments, before the packaging cylinder 600 installed on the second type of base 420 moves to the operation area 130, the packaging cylinder 600 is located below the water inlet of the storage pool 200, further improving the similarity between the sewage in the packaging cylinder 600 and the sewage in the cultivation area 120.

[0034] In some specific embodiments, the reciprocating base 400 is connected with a driving mechanism, and the driving mechanism drives the reciprocating base 400 to move. The packaging cylinder 600 is directly installed on the upper surface of the second type of base 420. The second type of base 420 can also surround the packaging cylinder 600 and be fixed to the peripheral wall of the packaging cylinder 600 to form a stable connection relationship with the packaging cylinder 600.

[0035] The carrier assembly 500 includes a load rod 510, a cover plate 520 and a plurality of carriers 530. Refer to Figure 7 、 Figure 8 and Figure 11 As shown, the cover plate 520 and the plurality of carriers 530 are both fixed to the load rod 510, and the cover plate 520 is located at the upper end of the load rod 510. The cover plate 520 can be clamped to the opening of the packaging cylinder 600 to seal the packaging cylinder 600. The cooperation between the cover plate 520 and the packaging cylinder 600 can be referred to Figure 10 As shown.

[0036] The anaerobic ammonia oxidation biofilm is mainly formed on the surface of the carrier 530. The carrier 530 can be selected from one or more of polyurethane foam, biological tape, activated carbon, biochemical cotton, volcanic stone, natural zeolite, non-woven fabric, etc.

[0037] Preferably, a plurality of carriers 530 are uniformly distributed along the axial direction of the load rod 510, and there is a gap between two adjacent carriers 530 to ensure sufficient contact between the carriers 530 and the sewage. The load rod 510 is vertically installed in the culture area 120, and the sewage in the culture area 120 flows horizontally. The vertically placed load rod 510 is conducive to intercepting the sludge flowing horizontally.

[0038] The carrier assembly 500 further includes an airbag 540 and a movable structure 550. The airbag 540 is installed on the surface of the cover plate 520 close to the carrier 530. Refer to Figure 7 、 Figure 8 and Figure 10 As shown, the airbag 540 is made of an elastic material, and the elastic airbag 540 can improve the sealing effect between the cover plate 520 and the packaging cylinder 600.

[0039] The movable structure 550 is movably installed on the load rod 510. A plurality of carriers 530 are located between the movable structure 550 and the airbag 540. The airbag 540 is located at the top and the movable structure 550 is located at the bottom. The load rod 510 is hollow, and the load rod 510 communicates with the airbag 540. Air holes 511 communicating with the inside thereof are provided on the side wall of the load rod 510, and the movable structure 550 blocks the air holes 511. The movable structure 550 blocks the air holes 511, blocking the gas exchange between the inside and the outside of the load rod 510, and can seal the inside of the load rod 510. When the movable structure 550 does not block the air holes 511, the air holes 511 communicate with the outside, and the inside of the load rod 510 and the inside of the airbag 540 can be inflated or deflated through the air holes 511.

[0040] The culture system further includes a plurality of installation bases 700. The installation bases 700 are fixed to the bottom of the culture area 120. Refer to Figure 5 and Figure 6 As shown, the installation bases 700 are used to install the carrier assembly 500. An inflation groove 710 is provided inside the installation base 700. Refer to Figure 8 and Figure 9 As shown, a sealing film 720 is provided at the opening of the inflation groove 710, and the inflation groove 710 communicates with a nitrogen delivery pipe 810.

[0041] The carrier assembly 500 can be installed on the installation base 700 under the drive of the drive module 300, so that the load rod 510 passes through the sealing film 720, and the end of the load rod 510 enters the inflation groove 710. The movable structure 550 cannot pass through the sealing film 720 and enter the inflation groove 710, and is blocked outside the inflation groove 710 by the sealing film 720. The air holes 511 are located in the inflation groove 710 to communicate the airbag 540 and the inflation groove 710.

[0042] During the process of installing the carrier assembly 500 onto the mounting base 700, the load rod 510 can pass through the sealing film 720, while the movable structure 550 cannot pass through the sealing film 720. When the movable structure 550 is blocked by the sealing film 720, the movable structure 550 cannot move further, but the load rod 510 can continue to move. The movable structure 550 and the load rod 510 move relative to each other. The load rod 510 continues to move towards the inflation groove 710, and the air hole 511 on the load rod 510 gradually moves away from the movable structure 550. The movable structure 550 gradually fails to continue blocking the air hole 511 until the air hole 511 enters the inflation groove 710, connecting the airbag 540 and the inflation groove 710. Nitrogen is introduced into the inflation groove 710 through the nitrogen delivery pipe 810. The nitrogen enters the interior of the load rod 510 through the air hole 511 and then enters the airbag 540 to inflate the airbag 540.

[0043] After inflation, the entire airbag 540 expands and can generate a certain buoyancy in the sewage. When the driving module 300 clamps the carrier assembly 500, it is more conducive to the separation of the carrier assembly 500 and the mounting base 700. And it can ensure that the cover plate 520 can be exposed above the sewage surface, facilitating cooperation with the driving module 300. At the same time, during the process of separating the carrier assembly 500 from the mounting base 700, after the movable structure 550 moves away from the sealing film 720, the movable structure 550 can reset and re-block the air hole 511 to seal the interior of the airbag 540 and the load rod 510.

[0044] There are multiple mounting bases 700, and multiple nitrogen delivery pipes 810 are connected to the multiple mounting bases 700. The multiple nitrogen delivery pipes 810 are all connected to the same gas source for gas supply.

[0045] Reference Figure 9 and Figure 11 As shown in

[0046] Reference Figure 11As shown in the figure, an air release groove 610 is provided at the bottom of the packaging cylinder 600. A limiting plate 620 is provided at the opening of the air release groove 610. A through hole communicating the inside of the air release groove 610 and the inside of the packaging cylinder 600 is provided on the limiting plate 620. The carrier assembly 500 can be installed in the packaging cylinder 600 under the drive of the drive module 300, so that the load rod 510 passes through the limiting plate 620, and the movable structure 550 is blocked outside the air release groove 610 by the limiting plate 620, and the air hole 511 is located in the air release groove 610 to communicate the air release groove 610 and the airbag 540.

[0047] The cooperation between the carrier assembly 500 and the limiting plate 620 is equivalent to the cooperation between the carrier assembly 500 and the sealing film 720. The load rod 510 is inserted into the air release groove 610, and the air hole 511 communicates the air release groove 610 and the airbag 540. The nitrogen in the airbag 540 can enter the air release groove 610, and enter the inside of the packaging cylinder 600 through the through hole on the limiting plate 620 to provide nitrogen protection for the carrier assembly 500 inside the packaging cylinder 600.

[0048] The drive module 300 provided in the embodiment of the present application is used to clamp the carrier assembly 500 and drive the carrier assembly 500 to move. In some embodiments, the drive module 300 includes a track frame 310 and a fixture 320. Refer to Figure 12 As shown in the figure, the track frame 310 is fixed to the top wall of the nitrogen protection area 110, and the fixture 320 is movably connected to the track frame 310. The fixture 320 can move along the depth direction of the reactor 100 to clamp or place the carrier assembly 500. The depth direction of the reactor 100 is the direction of gravity. The fixture 320 moves up and down along the direction of gravity to take out the carrier assembly 500 from the culture area 120 or the operation area 130 or place the carrier assembly 500 in the culture area 120 or the operation area 130.

[0049] In some embodiments of the present application, refer to Figure 5 As shown in the figure, a fixing frame 900 is installed in the culture area 120. The fixing frame 900 is provided with a plurality of installation holes 910. The carrier assembly 500 passes through the installation holes 910 to limit the installation position of the carrier assembly 500. When an installation base 700 is provided in the culture area 120, the fixing frame 900 and the installation base 700 cooperate to improve the position stability of the carrier assembly 500 in the culture area 120. The fixing frame 900 is provided with a hollow structure, which does not affect the contact between the nitrogen in the nitrogen protection area 110 and the sewage in the culture area 120.

[0050] The embodiment of the present application provides an anaerobic ammonium oxidation biofilm cultivation method, which uses the anaerobic ammonium oxidation biofilm cultivation system provided in any of the above embodiments. The specific cultivation steps include: First, place the uncultured carrier assembly 500 on the reciprocating base 400 in the storage pool 200, and drive the reciprocating base 400 into the operation area 130.

[0051] Then, the driving module 300 is started, and the carrier assembly 500 in the operation area 130 is clamped by the driving module 300 , and the carrier assembly 500 is moved and placed in the culture area 120 .

[0052] Before introducing sewage, it is necessary to install uncultured carrier assemblies 500 into the culture area 120. The above steps can be repeated until enough carrier assemblies 500 are installed in the culture area 120.

[0053] After the carrier assembly 500 is installed, the target sewage can be introduced into the culture area 120, nitrogen can be introduced into the nitrogen protection area 110, and sewage can be introduced into the storage tank 200 to culture the anaerobic ammonium oxidation biofilm.

[0054] In some specific embodiments, the mixed activated sludge of ammonia oxidizing bacteria and anaerobic ammonia oxidizing bacteria can be used as the inoculation source (the inoculation sludge concentration is 4000-5000 mg / L), the actual pretreated food waste fermentation liquid is used as the influent, and the influent is subjected to the conditions of oxygen limitation (DO≤0.5 mg / L), temperature ≥27°C, pH=7.5-8.5, and influent ammonia nitrogen load of 0.032 kg / (m 3 ·d) The total nitrogen load of the influent is 0.04 kg / (m 3 ·d) and continue to operate until the carrier 530 has completed the biofilm formation and the treatment effect is stable. After that, the total nitrogen load is gradually increased to 0.08kg / (m 3 ·d)、0.1kg / (m 3 ·d)、0.12kg / (m 3 ·d)、0.15kg / (m 3 ·d)、0.18kg / (m 3 ·d)、0.21kg / (m 3 ·d)、0.25kg / (m 3 ·d)、0.3kg / (m 3 ·d)、0.35kg / (m 3 ·d)、0.4kg / (m 3 d) Cultivating under each operating condition for 2-4 weeks until the anaerobic ammonium oxidation biofilm in the reactor 100 is fully adapted and highly active, that is, the total nitrogen removal rate is stably higher than 85%, and the cultivation is completed.

[0055] After the anaerobic ammonia oxidation biofilm culture is completed, the driving module 300 is started, the carrier assembly 500 that has been cultured in the culture area 120 is clamped, the carrier assembly 500 is moved and placed on the reciprocating base 400 in the operation area 130, and the reciprocating base 400 is driven to move to the storage tank 200, and the carrier assembly 500 that has been cultured is taken out.

[0056] After moving the cultured carrier assembly 500 to the sewage treatment system, the sewage can be treated. The sewage treatment system does not need to cultivate the anaerobic ammonium oxidation biofilm, saving the cultivation time and improving the overall efficiency of sewage treatment.

[0057] After taking out the cultured carrier assembly 500 from the cultivation area 120, the uncultured carrier assembly 500 can be moved back to the cultivation area 120 for the next round of anaerobic ammonium oxidation biofilm cultivation, providing a basis for the replacement of the carrier assembly 500 in the later sewage treatment system.

[0058] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including such element.

[0059] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention.

Claims

1. An anaerobic ammonium oxidation biofilm cultivation system, characterized in that, It includes a reactor, a storage tank, a driving module, a reciprocating base, and multiple carrier components; Inside the reactor, there is a nitrogen protection area in the upper layer, and a culture area and an operation area in the lower layer. An isolation plate is arranged between the culture area and the operation area. The nitrogen protection area has an air inlet and an air outlet, and the culture area has a liquid inlet and a liquid outlet; The storage tank is fixed on the outer peripheral wall of the reactor. The top of the storage tank is open, and a communication opening communicating with the storage tank is arranged on the side wall of the operation area; Multiple carrier components are installed in the culture area. The reciprocating base is installed in the storage tank, and the driving module is fixed in the nitrogen protection area. The reciprocating base is used to move the uncultured carrier components from the storage tank to the operation area, and move the cultured carrier components from the operation area to the storage tank. The driving module is used to clamp the carrier components and move them between the culture area and the reciprocating base in the operation area.

2. The anaerobic ammonium oxidation biofilm cultivation system according to claim 1, wherein In the depth direction of the reactor, the top end of the isolation plate is higher than the upper edge of the communication opening.

3. The anaerobic ammonium oxidation biofilm cultivation system according to claim 1, characterized in that, There are at least two reciprocating bases. At least one reciprocating base is used to move the uncultured carrier components from the storage tank to the operation area. At least one reciprocating base is equipped with a packaging cylinder, which is used to move the cultured carrier components from the operation area to the storage tank. The packaging cylinder is used to accommodate the cultured carrier components.

4. An anaerobic ammonium oxidation biofilm cultivation system according to claim 3, characterized in that, The carrier component includes a load rod, a cover plate, and multiple carriers. The cover plate and multiple carriers are both fixed on the load rod, and the cover plate is located at the upper end of the load rod. The cover plate can be clamped to the opening of the packaging cylinder to seal the packaging cylinder.

5. The anaerobic ammonium oxidation biofilm cultivation system according to claim 4, characterized in that The carrier component further includes an airbag and a movable structure. The airbag is installed on the surface of the cover plate close to the carrier. The movable structure is movably installed on the load rod. Multiple carriers are located between the movable structure and the airbag. The load rod is hollow, and the load rod communicates with the airbag. An air hole communicating with its interior is arranged on the side wall of the load rod, and the movable structure blocks the air hole; The culture system further includes multiple installation bases. The installation bases are fixed at the bottom of the culture area and are used to install the carrier components. An inflation groove is arranged inside the installation base. A sealing film is arranged at the opening of the inflation groove, and a nitrogen delivery pipe communicates with the inflation groove; The carrier component can be installed on the installation base under the drive of the driving module, so that the load rod passes through the sealing film, the movable structure is blocked outside the inflation groove by the sealing film, and the air hole is located in the inflation groove to communicate the airbag and the inflation groove.

6. The anaerobic ammonium oxidation biofilm cultivation system according to claim 5, wherein The movable structure includes an elastic member sleeved outside the load rod and a sliding block. One end of the elastic member is fixed to the load rod, and the other end is fixed to the sliding block. The sliding block is located on the side of the elastic member away from the cover plate, and the sliding block blocks the air hole; During the process of installing the carrier assembly onto the mounting base, the slider can slide relative to the load rod under the barrier of the sealing film to compress the elastic member, thereby removing the occlusion of the air hole.

7. An anaerobic ammonium oxidation biofilm cultivation system according to claim 6, wherein An air release groove is provided at the bottom of the packaging cylinder. A limiting plate is provided at the opening of the air release groove. A through hole communicating the inside of the air release groove and the inside of the packaging cylinder is provided on the limiting plate. The carrier assembly can be installed into the packaging cylinder under the drive of the drive module, such that the load rod passes through the limiting plate, the movable structure is blocked outside the air release groove by the limiting plate, and the air hole is located in the air release groove to communicate the air release groove and the airbag.

8. The anaerobic ammonium oxidation biofilm cultivation system according to claim 1, wherein The cultivation system further includes a sewage delivery pipe. The inlet of the sewage delivery pipe is communicated with the liquid outlet, and the outlet of the delivery pipe is communicated with the storage tank.

9. The anaerobic ammonium oxidation biofilm cultivation system according to claim 1, wherein, The drive module includes a track frame and a fixture. The track frame is fixed to the top wall of the nitrogen protection area. The fixture is movably connected to the track frame. The fixture can move along the depth direction of the reactor to clamp or place the carrier assembly. And / or, a fixing frame is installed in the cultivation area. The fixing frame is provided with a plurality of mounting holes, and the carrier assembly passes through the mounting holes.

10. A method for cultivating anammox biofilm, characterized in that, Using the anaerobic ammonium oxidation biofilm cultivation system according to any one of claims 1-9, the specific steps include: Placing the uncultivated carrier assembly on the reciprocating base in the storage tank and driving the reciprocating base into the operation area. Starting the drive module, clamping the carrier assembly in the operation area, moving the carrier assembly and placing the carrier assembly in the cultivation area. Introducing the target sewage into the cultivation area, introducing nitrogen into the nitrogen protection area, and introducing sewage into the storage tank. Starting the drive module, clamping the cultivated carrier assembly in the cultivation area, moving the carrier assembly and placing the carrier assembly on the reciprocating base in the operation area, driving the reciprocating base to move into the storage tank, and taking out the cultivated carrier assembly.

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