A sewage anaerobic ammonia oxidation denitrification reaction device and process

Abstract

The invention relates to a sewage anaerobic ammonia oxidation denitrification reaction device and process, and relates to the technical field of sewage treatment; the device comprises a purification tank, a denitrification reactor, a cleaning tank and a cleaner; the denitrification reactor is arranged in the purification tank and the cleaning tank, the cleaning tank is used to maintain the denitrification reactor, the cleaner is used to clean the anaerobic bacteria diffusion cotton, and the cleaner comprises a filter screen plate for filtering impurities in the sewage; the invention can solve the following problems existing in the prior art: firstly, a large amount of impurities are mixed in the sewage, and when the sewage passes through the anaerobic bacteria sponge bed, the impurities in the sewage will enter the anaerobic bacteria sponge bed, causing the anaerobic bacteria sponge bed to be blocked and unable to denitrify the sewage, further affecting the efficiency of sewage denitrification; secondly, the anaerobic bacteria are concentrated on the anaerobic bacteria sponge bed, so when the sewage is purified, the sewage treatment effect will be poor, and at the same time, it is impossible to ensure that the anaerobic bacteria in the anaerobic bacteria sponge bed and the sewage are fully mixed.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sewage anaerobic ammonia oxidation denitrification reaction device and process. Background Art

[0002] Anaerobic ammonium oxidation technology is a highly efficient biological denitrification process that achieves denitrification by converting ammonia nitrogen and nitrite nitrogen into nitrogen gas under anaerobic conditions through anaerobic ammonium oxidizing bacteria.

[0003] Bacteria involved in the anaerobic ammonium oxidation process are called anaerobic ammonium oxidizing bacteria. Anaerobic ammonium oxidizing bacteria are autotrophic bacteria that use carbon dioxide or carbonate as a carbon source, ammonium salts as electron donors, and nitrites as electron acceptors. They belong to the phylum Planctomycetes. Through biochemical reactions, they can convert ammonia nitrogen contained in sewage into nitrogen gas for removal. Therefore, anaerobic ammonium oxidizing bacteria are of great significance to the global nitrogen cycle and are also an important type of engineering microorganisms in sewage treatment.

[0004] Anaerobic ammonium oxidation technology requires the use of an anaerobic ammonium oxidation denitrification reaction device, which is a biotechnology device specifically used to treat nitrogen pollutants in wastewater. This device uses anaerobic ammonium oxidation technology to convert ammonia nitrogen and nitrite nitrogen into nitrogen gas through the action of microorganisms, thereby achieving denitrification of wastewater.

[0005] For example, a Chinese patent with publication number CN113277617A discloses a novel sewage denitrification device based on anaerobic ammonia oxidation, which relates to the technical field of sewage treatment. The injection head of the novel sewage denitrification device based on anaerobic ammonia oxidation is connected to a water injection pipe, an anaerobic sponge bed is arranged inside the lower end of the treatment tank, a water storage tank is arranged at the lower end of the anaerobic sponge bed, and the injection heads are evenly spaced inside the water storage tank, an anaerobic filler is arranged in the middle of the anaerobic sponge bed, a positioning pressure ring is arranged on the upper surface of the anaerobic sponge bed, a connecting screw is welded on the inner surface of the lower end of the treatment tank, and the positioning pressure ring arranged on the upper surface of the anaerobic sponge bed is positioned by the connecting screw. When it is in use, the anaerobic filler arranged in the middle of the anaerobic sponge bed is convenient for culturing anaerobic ammonia oxidizing bacteria on the filler, and the anaerobic ammonia oxidizing bacteria are used to treat the nitrogen element in the sewage, thereby achieving the effect of sewage denitrification.

[0006] However, the above-mentioned sewage denitrification device still has some shortcomings in actual use:

[0007] 1. In the above-mentioned prior art, the anaerobic bacteria filler arranged in the middle of the anaerobic bacteria sponge bed facilitates the cultivation of anaerobic ammonia-oxidizing bacteria on the filler, and the anaerobic ammonia-oxidizing bacteria are used to treat the nitrogen element in the sewage. However, a large amount of sludge impurities are mixed in the sewage. When the sewage passes through the anaerobic bacteria sponge bed, the sludge and other impurities in the sewage will enter the anaerobic bacteria sponge bed and gradually accumulate in the anaerobic bacteria sponge bed until the anaerobic bacteria sponge bed is blocked and the denitrification treatment of the sewage cannot be achieved, thereby affecting the treatment of the sewage; further, after the anaerobic bacteria sponge bed is blocked, the anaerobic bacteria sponge bed needs to be frequently replaced and maintained, resulting in the entire equipment consuming a lot of time for maintenance, affecting the efficiency of sewage denitrification.

[0008] 2. Furthermore, when sewage is contacted with anaerobic bacteria for treatment, the volume of the anaerobic sponge bed is certain, and the anaerobic bacteria are concentrated in the anaerobic sponge bed and cannot enter other positions in the purification tank. Therefore, when purifying sewage, it will lead to poor sewage treatment effect and cannot ensure sufficient mixing of anaerobic bacteria in the anaerobic sponge bed and sewage.

[0009] Therefore, based on the above-stated viewpoint, there is still room for improvement in the existing sewage anaerobic ammonia oxidation denitrification reaction device. Summary of the invention

[0010] In order to solve the above problems, the present invention provides a sewage anaerobic ammonia oxidation denitrification reaction device and process.

[0011] In a first aspect, a sewage anaerobic ammonia oxidation denitrification reaction device includes a purification tank for denitrification treatment of sewage.

[0012] A denitrification reactor is arranged in a purification tank and a cleaning tank. The sewage is denitrified by anaerobic ammonia-oxidizing bacteria in the denitrification reactor. The denitrification reactor includes an anaerobic culture medium for storing and cultivating anaerobic bacteria and anaerobic diffusion cotton for facilitating the diffusion and implantation of the cultivated anaerobic bacteria. The anaerobic culture medium is arranged in the middle of the anaerobic diffusion cotton, and a culture tank for installing the anaerobic culture medium is opened in the middle of the anaerobic diffusion cotton.

[0013] The cleaning tank is used to maintain the denitrification reactor; the cleaning tank is symmetrically arranged at both ends of the purification tank.

[0014] The cleaner is used to clean the anaerobic bacteria diffusion cotton. The cleaner comprises a filter screen plate for filtering impurities in sewage. The filter screen plate is arranged at the bottom of the anaerobic bacteria diffusion cotton.

[0015] Preferably, the denitrification reactor also includes a sewage feed pipe, a sewage discharge pipe, a movable electric push rod, a fixed frame, an isolation plate and a deoxygenation treatment component. The sewage feed pipe is arranged on one side of the purification tank, and the sewage discharge pipe is arranged on the other side of the purification tank. The sewage feed pipe and the sewage discharge pipe are staggered and the sewage discharge pipe is higher than the sewage feed pipe. The fixed frames are respectively arranged on the outside of two anaerobic bacteria diffusion cottons to wrap the anaerobic bacteria diffusion cottons. The isolation plates are arranged on both sides of the fixed frames, and the isolation plates are arranged in the overlapping area of ​​the purification tank and the cleaning tank to isolate the purification tank from the cleaning tank.

[0016] The movable electric push rod is arranged on the outer wall of the cleaning pool at one side, and the output end of the movable electric push rod is connected to the fixing frame and has a tendency to move toward the purification pool, and the deoxidation treatment component is arranged on the purification pool.

[0017] Preferably, a Y-shaped implantation reaction frame is evenly and rotatably arranged at the upper end of the anaerobic bacteria diffusion cotton, and the surface of the implantation reaction frame is provided with an uneven raised area for increasing the contact area with the sewage.

[0018] Preferably, the cleaner also includes a cleaning scraper for cleaning the sludge filtered by the filter screen and a reciprocating component for controlling the cleaning scraper to scrape back and forth along the length direction of the filter screen; the reciprocating component includes two reciprocating threaded rods symmetrically distributed along the length direction of the cleaning tank, the reciprocating threaded rods are rotatably arranged on the inner wall of the cleaning tank through bearings, and the two reciprocating threaded rods are provided with synchronous wheels at one end away from the purification tank, and the two synchronous wheels are jointly sleeved with a synchronous belt for driving the synchronous wheels to rotate, a cleaning motor is arranged on one side of the synchronous wheels, and a movable slider is installed on the two reciprocating threaded rods by means of a threaded connection, and a cleaning scraper is arranged on the movable slider.

[0019] Preferably, the movable slider is symmetrically provided with T-shaped columns along the length direction, and an adjustment circular groove is provided on the movable slider for the T-shaped columns to slide up and down, a traction spring is provided between the bottom of the T-shaped column and the movable slider, and the upper end of the T-shaped column is connected to the cleaning scraper.

[0020] Preferably, guide posts are provided on both sides of the cleaning scraper in the length direction, the guide posts are slidably arranged on a guide plate, the guide plate is arranged on the inner wall of the cleaning pool, and a guide groove for the guide post to slide is provided on the guide plate.

[0021] Preferably, the cleaning pool is also provided with a replenisher for replenishing anaerobic bacteria, the replenisher comprises a replenishing plug and a replenishing pipe, the replenishing plug is arranged on the isolation plate, the replenishing pipe is arranged on the cleaning pool, and the replenishing pipe and the replenishing plug are in the same straight line.

[0022] Preferably, a spiral frame is also installed at the bottom of the implantation reaction frame, and the implantation reaction frame is rotatably arranged on the spiral frame, and the spiral frame is arranged on the inner wall of the purification tank. A rotating gear is installed in the middle of the implantation reaction frame, and a rotating rack is meshed on one side of the rotating gear. The rotating rack is slidably arranged in the purification tank, and a reciprocating push rod is provided on one side of the rotating rack, and the reciprocating push rod is arranged on the outer wall of the purification tank. An impact column is installed at the bottom of the implantation reaction frame by a threaded connection, and the impact column slides downward and passes through the spiral frame.

[0023] Preferably, the cleaning pool is connected with a flushing pipe for flushing and cleaning the anaerobic bacteria diffusion cotton downwards.

[0024] In the second aspect, the present invention also provides a sewage anaerobic ammonia oxidation denitrification reaction process, and the sewage anaerobic ammonia oxidation denitrification reaction process is as follows:

[0025] S1. Anaerobic treatment: Fill the purification pool and the cleaning pool with nitrogen, so that the nitrogen fills the purification pool and the cleaning pool, so that the anaerobic treatment is carried out to provide favorable conditions for the survival and cultivation of anaerobic bacteria;

[0026] S2. Sewage filling: connect the sewage to the sewage feed pipe, and then gradually add the sewage into the purification tank;

[0027] S3. Sewage denitrification: When the sewage enters the purification tank, it comes into contact with the anaerobic bacteria in the anaerobic diffusion cotton. The anaerobic bacteria react with the nitrogen compounds in the sewage to convert the nitrogen compounds in the sewage into nitrogen gas, which is then discharged;

[0028] S4. Sewage stirring: During the reaction between sewage and anaerobic bacteria, the sewage is stirred so that the sewage can be mixed with the anaerobic bacteria more fully. At the same time, the anaerobic bacteria in the anaerobic bacteria diffusion cotton are thrown into the sewage, which greatly improves the efficiency of mixing with the sewage.

[0029] S5, Filtration treatment: When the sewage reacts with the anaerobic bacteria in the anaerobic diffusion cotton, the sewage is always in a flowing state. At this time, the impurities in the sewage are cleaned by the cleaner to prevent the impurities in the sewage from entering the anaerobic diffusion cotton, causing it to be blocked and unable to achieve denitrification treatment of the sewage;

[0030] S6. Sludge cleaning: When the sewage is filtered by the filter screen in the cleaner, the sludge accumulates on the filter screen. Therefore, the anaerobic diffusion cotton to be cleaned is moved to the cleaning tank for sludge scraping. At the same time, the new anaerobic diffusion cotton is moved to the purification tank for sewage filtration. After the old anaerobic diffusion cotton completes the sludge scraping, it can be re-entered into the purification tank for sewage filtration when the anaerobic diffusion cotton in the purification tank is maintained. Finally, the two anaerobic diffusion cottons are used to realize the automated alternating operation of sewage cleaning and equipment maintenance, which greatly improves the efficiency of sludge denitrification.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The present invention uses two groups of anaerobic bacteria diffusion cottons to perform alternating denitrification treatment and maintenance on sewage, which greatly improves the efficiency of denitrification reaction of sewage and avoids consuming a lot of time for replacement and maintenance of anaerobic bacteria diffusion cottons. At the same time, the alternating operation of the two groups of anaerobic bacteria diffusion cottons can ensure the fault tolerance rate of sewage denitrification treatment.

[0033] 2. Furthermore, a filter screen plate is provided at the bottom of the anaerobic bacteria diffusion cotton in the present invention, and the sludge in the sewage is cleaned by the filter screen plate to prevent the sludge in the sewage from clogging the anaerobic bacteria diffusion cotton, resulting in the inability to denitrify the sewage. At the same time, the sludge on the filter screen plate can be removed and cleaned by a cleaning scraper, thereby realizing automatic cleaning of the anaerobic bacteria diffusion cotton and the filter screen plate, thereby indirectly improving the service life of the anaerobic bacteria diffusion cotton and the filter screen plate.

[0034] 3. The present invention can improve the cleanliness of the maintenance and cleaning of anaerobic bacteria diffusion cotton and filter screen plate through the vibrator, ensure the reuse of anaerobic bacteria diffusion cotton and filter screen plate, reduce cost consumption, and also extend the life of the replacement of the two, and improve the operation cycle of the entire device for cleaning sewage each time. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0036] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0037] Figure 2 It is a first-view structural diagram between the denitrification reactor and the cleaner of the present invention.

[0038] Figure 3 It is a second perspective structural schematic diagram between the denitrification reactor and the cleaner of the present invention.

[0039] Figure 4 It is a schematic structural diagram of the denitrification reactor of the present invention.

[0040] Figure 5It is a schematic diagram of the structure between the reciprocating component and the denitrification reactor of the present invention.

[0041] Figure 6 It is a schematic structural diagram of the reciprocating component of the present invention.

[0042] Figure 7 It is a schematic diagram of the structure between the reciprocating component and the vibrator of the present invention.

[0043] Figure 8 The present invention Figure 7 A partial enlarged view of point A in the figure.

[0044] Fig. 9 It is a schematic diagram of the structure of the replenisher of the present invention.

[0045] Fig.10 The present invention is a flow chart of the sewage anaerobic ammonia oxidation denitrification reaction process.

[0046] In the figure, 1, purification tank; 2, cleaning tank; 3, denitrification reactor; 30, anaerobic culture medium; 31, anaerobic diffusion cotton; 4, cleaner; 40, filter screen; 32, sewage feed pipe; 33, sewage discharge pipe; 34, mobile electric push rod; 35, fixed frame; 36, isolation plate; 37, deoxygenation treatment component; 5, implantation reaction frame; 41, cleaning scraper; 42, reciprocating component; 420, reciprocating threaded rod; 421, synchronous wheel; 422, synchronous belt; 423, cleaning motor; 424, mobile Slider; 43, T-shaped column; 44, adjusting circular groove; 45, traction spring; 46, guide column; 47, guide plate; 48, guide slide; 6, vibrator; 60, horizontal plate; 61, vibration hammer; 62, vibration tension spring; 63, vibration shaft; 64, vibration cam; 65, vibration gear; 66, vibration rack; 7, replenisher; 70, replenishing plug; 71, replenishing pipe; 80, spiral frame; 81, rotating gear; 82, rotating rack; 83, reciprocating push rod; 84, impact column; 9, flushing pipe. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-Figure 10 While embodiments of the invention have been described in detail, the invention can be implemented in many different ways as defined and covered by the claims.

[0048] The embodiments of the present application disclose a sewage anaerobic ammonia oxidation denitrification reaction device and process; it is explained that the sewage anaerobic ammonia oxidation denitrification reaction device and process are mainly used in the process of sewage denitrification purification, and can avoid the problem of slow treatment efficiency during sewage denitrification treatment in terms of technical effect; in particular, when sewage is undergoing denitrification treatment, a large amount of sludge or impurities will be mixed in the sewage, and these sludge or impurities will cause the entire sewage anaerobic ammonia oxidation denitrification reaction device to be blocked, thereby causing its denitrification efficiency to decrease with the long-term use of the device; further, the sewage anaerobic ammonia oxidation denitrification reaction device can also improve the problem of sewage denitrification treatment efficiency. Embodiment 1:

[0049] Reference Figure 1 As shown, 1. A sewage anaerobic ammonia oxidation denitrification reaction device includes a purification tank 1 for denitrification treatment of sewage; a cleaning tank 2 for automatic maintenance of sewage after denitrification; the cleaning tank 2 is symmetrically arranged at both ends of the purification tank 1.

[0050] It should be noted that the purification tank 1 is a closed structure, and an opening and closing window is provided at the upper end thereof, which can be opened and closed; secondly, the purification tank 1 and the cleaning tank 2 are connected, and in the initial state, the two are not connected to each other, but when cleaning and maintenance are required, the two are connected.

[0051] See also Figure 2 and Figure 3 As shown, a denitrification reactor 3 is arranged in the purification tank 1 and the cleaning tank 2. The sewage input into the purification tank 1 is denitrified by the anaerobic ammonia-oxidizing bacteria in the denitrification reactor 3. The denitrification reactor 3 includes an anaerobic culture medium 30 for storing and cultivating anaerobic bacteria and anaerobic diffusion cotton 31 for facilitating the diffusion and implantation of the cultivated anaerobic bacteria. The anaerobic culture medium 30 is arranged in the middle of the anaerobic diffusion cotton 31, and a culture tank for installing the anaerobic culture medium 30 is opened in the middle of the anaerobic diffusion cotton 31.

[0052] The cleaner 4 is used to clean the anaerobic bacteria diffusion cotton 31 after the operation. The cleaner 4 includes a filter screen plate 40 for filtering impurities in the sewage. The filter screen plate 40 is arranged at the bottom of the anaerobic bacteria diffusion cotton 31 .

[0053] The denitrification reactor 3 in the present invention is mainly provided with two groups, and the two groups of denitrification reactors 3 can be slidably arranged in the purification tank 1 and the cleaning tank 2.

[0054] The anaerobic culture medium 30 is mainly used to store anaerobic bacteria and ensure that the anaerobic bacteria can multiply rapidly in a short period of time.

[0055] In the present invention, the anaerobic culture medium 30 is arranged in the middle of the anaerobic diffusion cotton 31, and the cultured anaerobic bacteria will automatically diffuse into the anaerobic diffusion cotton 31, ensuring that the anaerobic bacteria can quickly diffuse in the entire anaerobic diffusion cotton 31, facilitating the contact between the anaerobic bacteria and the subsequent sewage.

[0056] After the sewage enters the purification tank 1, the sewage gradually fills the entire purification tank 1 from bottom to top. At this time, the impurities in the sewage are filtered through the filter screen plate 40, and the filtered sewage will be in full contact with the anaerobic diffusion cotton 31. During this process, the anaerobic bacteria in the anaerobic diffusion cotton 31 will convert the nitrogen compounds in the sewage into nitrogen gas, thereby realizing the denitrification treatment of the sewage.

[0057] Look again Figure 2 and Figure 3 As shown, it is a structural schematic diagram of the installation of anaerobic bacteria diffusion cotton 31 in the present invention and a structural schematic diagram of sewage entering and exiting the purification tank 1 for treatment; the denitrification reactor 3 also includes a sewage feed pipe 32, a sewage discharge pipe 33, a movable electric push rod 34, a fixed frame 35, an isolation plate 36 and a deoxygenation treatment component 37, the sewage feed pipe 32 is arranged on one side of the purification tank 1, and the sewage discharge pipe 33 is arranged on the other side of the purification tank 1, the sewage feed pipe 32 and the sewage discharge pipe 33 are misaligned, and the sewage discharge pipe 33 is higher than the sewage feed pipe 32, the fixed frames 35 are respectively arranged on the outside of the two anaerobic bacteria diffusion cottons 31 to wrap the anaerobic bacteria diffusion cottons 31, the isolation plates 36 are arranged at both ends of the two fixed frames 35, and the isolation plates 36 are arranged in the overlapping area of ​​the purification tank 1 and the cleaning tank 2 to isolate the purification tank 1 from the cleaning tank 2.

[0058] It should be noted that the fixing frame 35 is a detachable structure, and the fixing frame 35 is connected by bolts and nuts, which are shown in the figure, but will not be described in detail here.

[0059] Anaerobic bacteria diffusion cotton 31 is arranged in each of the two fixing frames 35 , and isolation plates 36 are arranged at both ends of the two fixing frames 35 . The two anaerobic bacteria diffusion cottons 31 can be isolated by the isolation plates 36 to prevent one of the anaerobic bacteria diffusion cottons 31 from entering the purification tank 1 to treat the sewage, causing the sewage to leak from the gap between the two fixing frames 35 .

[0060] The movable electric push rod 34 is arranged on the outer wall of the cleaning pool 2 at one side, and the output end of the movable electric push rod 34 is connected to the fixing frame 35 and has a tendency to move toward the purification pool 1 .

[0061] In the initial state, the mobile electric push rod 34 is in a retracted state. At this time, one anaerobic diffusion cotton 31 is in the purification tank 1, and the other anaerobic diffusion cotton 31 is set in the cleaning tank 2; when the mobile electric push rod 34 is started, the anaerobic diffusion cotton 31 already in the purification tank 1 needs maintenance. At this time, with the assistance of the mobile electric push rod 34, it enters the other cleaning tank 2 for cleaning, and the anaerobic diffusion cotton 31 previously located in the purification tank 1 enters the purification tank 1 to continue purifying the sewage.

[0062] See also Figure 3 As shown, the deoxygenation treatment component 37 includes a nitrogen filling component and a one-way air outlet valve. The deoxygenation treatment component 37 is arranged on the top of the purification pool 1 to facilitate the filling of nitrogen into the purification pool 1. The one-way air outlet valve is arranged on the purification pool 1 to facilitate the sealing and discharge of the gas in the purification pool 1.

[0063] It should be noted that the deoxidation treatment component 37 is a known structure, which can mainly transport pre-prepared nitrogen through a pump body.

[0064] When it is necessary to treat sewage in the purification tank 1, the deoxygenation treatment component 37 is first started, and nitrogen is filled into the purification tank 1 and the cleaning tank 2 through an external pump body, so that the purification tank 1 is in an anaerobic state. The purpose is to facilitate the survival of anaerobic bacteria, ensure the activity of anaerobic bacteria, and improve the effect of their reaction with sewage.

[0065] When nitrogen is filled into the purification pool 1, the gas in the purification pool 1 is discharged through the cooperation of the one-way air outlet valve to discharge the mixed air, ensuring that the interior of the purification pool 1 is in an oxygen-free state.

[0066] Reference Figure 4 As shown, it is a structural schematic diagram of the implantation reaction frame 5 in the present invention for increasing the contact area between anaerobic bacteria and sewage to ensure that anaerobic bacteria can diffuse; specifically, the upper end of the anaerobic bacteria diffusion cotton 31 is also equidistantly rotated with a Y-shaped implantation reaction frame 5, and the surface of the implantation reaction frame 5 is provided with an uneven raised area for increasing the contact area with sewage.

[0067] The implantation reaction frame 5 rotates to contact the upper end of the anaerobic bacteria diffusion cotton 31, which can facilitate the reproduction of anaerobic bacteria, so that the anaerobic bacteria diffusion cotton 31 can be spread all over the implantation reaction frame 5, and the contact area between the anaerobic bacteria and the sewage is increased through the uneven raised areas on its surface, thereby improving the efficiency of the sewage denitrification reaction.

[0068] When it rotates, it can not only drive the sewage to be stirred, so that the sewage can swing in the purification tank 1, thereby increasing the contact time between the sewage and the entire anaerobic bacteria diffusion cotton 31; it can also diffuse the anaerobic bacteria in the anaerobic bacteria diffusion cotton 31, ensuring that the anaerobic bacteria are distributed in the entire purification tank 1, ensuring that the sewage at various positions in the purification tank 1 can drive sufficient denitrification treatment.

[0069] Furthermore, in order to increase the contact area and contact efficiency between sewage and anaerobic bacteria, the present invention is further provided with a spiral frame 80, referring to Figure 4 As shown, specifically, a spiral frame 80 is also installed at the bottom of the implantation reaction frame 5, and the implantation reaction frame 5 is rotatably arranged on the spiral frame 80, and the spiral frame 80 is arranged on the inner wall of the purification tank 1. A rotating gear 81 is installed in the middle of the implantation reaction frame 5, and a rotating rack 82 is meshed on one side of the rotating gear 81. The rotating rack 82 is slidably arranged in the purification tank 1, and a reciprocating push rod 83 is provided on one side of the rotating rack 82. The reciprocating push rod 83 is arranged on the outer wall of the purification tank 1. An impact column 84 is installed at the bottom of the implantation reaction frame 5 by a threaded connection, and the impact column 84 slides downward and passes through the spiral frame 80.

[0070] The reciprocating push rod 83 is started, and the reciprocating push rod 83 drives the rotating rack 82 to move back and forth. At the same time, the rotating rack 82 drives the implantation reaction frame 5 to swing back and forth in cooperation with the rotating gear 81. When the implantation reaction frame 5 swings back and forth, the impact column 84 arranged at the bottom thereof reciprocates up and down through the threaded connection structure between it and the implantation reaction frame 5. When the impact column 84 retracts up and down, it strikes the anaerobic diffusion cotton 31, squeezes out the anaerobic bacteria in the anaerobic diffusion cotton 31, ensures that the anaerobic bacteria can be thrown into the upper part of the purification tank 1, and ensures that the anaerobic bacteria and sewage are mixed more fully.

[0071] Secondly, when the implantation reaction frame 5 swings back and forth, it can also drive the sewage to shake, ensuring that the sewage in the purification tank 1 can always be in a flowing state, avoiding the sewage being stagnant and causing the sewage in some positions to be unable to mix with the anaerobic bacteria.

[0072] Reference Figure 5 and Figure 6 As shown, that is, a structural schematic diagram of the present invention for automatic cleaning after sewage filtration; specifically, the cleaner 4 also includes a cleaning scraper 41 for cleaning the sludge filtered by the filter screen plate 40 and a reciprocating component 42 for controlling the cleaning scraper 41 to scrape back and forth along the length direction of the filter screen plate 40.

[0073] The reciprocating component 42 includes two reciprocating threaded rods 420 symmetrically distributed along the length direction of the cleaning pool 2. The reciprocating threaded rods 420 are rotatably arranged on the inner wall of the cleaning pool 2 through bearings. The two reciprocating threaded rods 420 are provided with synchronous wheels 421 at one end away from the purification pool 1. The two synchronous wheels 421 are jointly sleeved with a synchronous belt 422 that drives the synchronous wheels 421 to rotate synchronously. A cleaning motor 423 is arranged on one side of the synchronous wheels 421. A movable slider 424 is installed on the two reciprocating threaded rods 420 by way of a threaded connection, and a cleaning scraper 41 is arranged on the movable slider 424.

[0074] When the sewage is in contact with the anaerobic diffusion cotton 31 for a long time in the purification tank 1, a large amount of sludge impurities mixed in the sewage will accumulate on the filter screen plate 40 at the bottom of the anaerobic diffusion cotton 31, which will cause the sludge to block the filter screen plate 40, thereby preventing the sewage from flowing; therefore, the present invention will clean it regularly.

[0075] First, move the electric push rod 34 to start, and move the blocked anaerobic diffusion cotton 31 and the filter screen plate 40 arranged at the bottom thereof to the cleaning pool 2 on one side. At this time, the filter screen plate 40 at the bottom of the anaerobic diffusion cotton 31 is sprayed with water, and the cleaning scraper 41 scrapes the sludge to clean up the sludge adsorbed on the bottom of the filter screen plate 40. At the same time, the sludge scraped off by the cleaning scraper 41 can be dispersed with the flushing of water source, so that it can enter the water source for unified treatment, or it can be circulated to the sewage for denitrification treatment.

[0076] Reference Figure 7 and Figure 8 As shown, that is, a schematic diagram of the structure of the movement of the cleaning scraper 41 in the present invention; specifically, the movable slider 424 is symmetrically provided with T-shaped columns 43 along the length direction, and the movable slider 424 is provided with an adjustment circular groove 44 for the T-shaped column 43 to slide up and down, a traction spring 45 is provided between the bottom of the T-shaped column 43 and the movable slider 424, and the upper end of the T-shaped column 43 is connected to the cleaning scraper 41.

[0077] Guide posts 46 are also provided on both sides of the cleaning scraper 41 in the length direction. The guide posts 46 are slidably arranged on guide plates 47. The guide plates 47 are arranged on the inner wall of the cleaning pool 2, and guide grooves 48 for the guide posts 46 to slide are provided on the guide plates 47.

[0078] During the specific implementation process, the cleaning motor 423 is started, and the cleaning motor 423 drives the two reciprocating threaded rods 420 to rotate synchronously with the cooperation of the synchronous belt 422 and the synchronous wheel 421. Then the moving slider 424 on the reciprocating threaded rod 420 drives the cleaning scraper 41 to move synchronously along the length direction of the filter screen plate 40. At the same time, the cleaning scraper 41 scrapes and cleans the sludge at the bottom of the filter screen plate 40.

[0079] It should be noted that; in the initial state, the cleaning scraper 41 is away from the filter screen plate 40. When cleaning sludge, the guide column 46 on the side wall of the cleaning scraper 41 will move along the guide groove 48 on the guide plate 47. The guide groove 48 is a trapezoidal structure. Therefore, when the cleaning scraper 41 is located at both ends of the filter screen plate 40, it will be away from the filter screen plate 40. When the cleaning scraper 41 moves, it will be guided by the guide groove 48 to move upward, ensuring that the cleaning scraper 41 can lean against the filter screen plate 40 to remove the sludge.

[0080] See also Fig. 9 As shown, it is a schematic diagram of the mechanism for flushing the sludge in the cleaning tank 2 and adding anaerobic bacteria in the present invention; the cleaning tank 2 is also provided with a replenisher 7 for replenishing anaerobic bacteria, the replenisher 7 includes a replenishing plug 70 and a replenishing pipe 71, the replenishing plug 70 is arranged on the isolation plate 36, the replenishing pipe 71 is arranged on the cleaning tank 2, and the replenishing pipe 71 is in the same straight line as the replenishing plug 70; the cleaning tank 2 is connected with a flushing pipe 9 for flushing and cleaning the anaerobic diffusion cotton 31 downwards.

[0081] When the sludge is scraped, the flushing pipe 9 sprays the filtered sewage downward, and the sludge on the filter screen plate 40 and the anaerobic bacteria diffusion cotton 31 is flushed away by the filtered sewage.

[0082] It should be noted that the supplementary plug 70 on the isolation plate 36 is made of rubber and is in a closed state under normal conditions. When the supplementary pipe 71 is inserted into the supplementary plug 70, anaerobic bacteria can be filled into the anaerobic culture medium 30 to ensure that there are sufficient anaerobic bacteria in the entire anaerobic diffusion cotton 31 and the anaerobic culture medium 30, so that the sewage can be denitrified at all times. Embodiment 2:

[0083] Reference Figure 8 and Fig. 9 As shown, on the basis of Example 1, in order to further ensure the efficiency of sludge cleaning on the filter screen plate 40 and the efficiency of sludge cleaning, the present invention proposes a vibrator 6, which vibrates and knocks the filter screen plate 40 and the anaerobic bacteria diffusion cotton 31 through the vibrator 6, so that the sludge mixed in the gap between the two for filtering can be shaken off, and with the cooperation of the cleaning scraper 41, the sludge cleaning effect can be greatly improved, so that the filter screen plate 40 and the anaerobic bacteria diffusion cotton 31 can be restored to a clean state, so that the filtering effect of the filter screen plate 40 on the sludge is in the best state, so that the anaerobic bacteria in the anaerobic bacteria diffusion cotton 31 can be facilitated to reproduce; the details are as follows.

[0084] Look again Figure 8As shown, a vibrator 6 for improving sludge cleaning efficiency is also provided on the side wall of the cleaning scraper 41 , and the vibrator 6 includes a horizontal plate 60 , a vibrating hammer 61 , a vibrating tension spring 62 , a vibrating shaft 63 , a vibrating cam 64 , a vibrating gear 65 and a vibrating rack 66 .

[0085] The horizontal plate 60 is arranged on the side wall to be cleaned and scraped, and the vibration hammers 61 are slidably arranged through the horizontal plate 60 at equal intervals along the length direction of the horizontal plate 60 , and a vibration tension spring 62 is sleeved between the vibration hammers 61 and the horizontal plate 60 .

[0086] The vibration shaft 63 is rotatably arranged on the movable slider 424, and the vibration cam 64 is symmetrically arranged on the vibration shaft 63 corresponding to the vibration hammers 61 arranged at equal intervals. The vibration gear 65 is installed on one side of the vibration shaft 63, and the vibration rack 66 is arranged on the guide plate 47 close to the vibration gear 65.

[0087] When the movable slider 424 moves back and forth along the cleaning pool 2, the vibration gear 65 on the vibration shaft 63 rotates and engages with the vibration rack 66, so that the vibration shaft 63 can rotate. At this time, the vibration cam 64 on the vibration shaft 63 rotates synchronously with the vibration shaft 63, and the vibration hammer 61 rests on the vibration cam 64. Therefore, when the vibration cam 64 continues to rotate, the vibration cam 64 can rest on the filter screen plate 40 and knock the filter screen plate 40 back and forth. After the filter screen plate 40 is knocked by external force, the sludge on the upper end of the filter screen plate 40 gradually moves downward due to vibration until it is separated from the filter screen plate 40.

[0088] See also Fig.10 The flowchart of the anaerobic ammonia oxidation denitrification reaction process for sewage is shown as follows:

[0089] S1. Anaerobic treatment: nitrogen is filled into the purification pool 1 and the cleaning pool 2, so that the nitrogen fills the purification pool 1 and the cleaning pool 2, so that the anaerobic treatment is performed to provide favorable conditions for the survival and cultivation of anaerobic bacteria.

[0090] S2, sewage filling: connect the sewage to the sewage feed pipe 32, and then gradually add the sewage into the purification tank 1.

[0091] S3. Sewage denitrification: When the sewage enters the purification tank 1, the sewage comes into contact with the anaerobic bacteria in the anaerobic diffusion cotton 31. The anaerobic bacteria react with the nitrogen compounds in the sewage to convert the nitrogen compounds in the sewage into nitrogen gas, which is then discharged.

[0092] S4. Sewage stirring: During the reaction between sewage and anaerobic bacteria, the sewage is stirred by the implantation reaction rack 5 so that the sewage can be mixed with the anaerobic bacteria more fully. At the same time, the anaerobic bacteria in the anaerobic bacteria diffusion cotton 31 are thrown into the sewage, which greatly improves the mixing efficiency between the sewage and the anaerobic bacteria.

[0093] S5, filtration treatment: When the sewage reacts with the anaerobic bacteria in the anaerobic diffusion cotton 31, the sewage is always in a flowing state. At this time, the impurities in the sewage are cleaned by the cleaner 4 to prevent the impurities in the sewage from entering the anaerobic diffusion cotton 31, causing it to be blocked and unable to achieve denitrification treatment of the sewage.

[0094] S6. Sludge cleaning: After the sewage is filtered by the filter screen plate 40 in the cleaner 4, the sludge accumulates on the filter screen plate 40. Therefore, the anaerobic bacteria diffusion cotton 31 to be cleaned is moved to the cleaning tank 2 for sludge scraping, and the new anaerobic bacteria diffusion cotton 31 is moved to the purification tank 1 for sewage filtration. After the old anaerobic bacteria diffusion cotton 31 completes the sludge scraping, it can be re-entered into the purification tank 1 for sewage filtration when the anaerobic bacteria diffusion cotton 31 in the purification tank 1 is maintained. Finally, the two anaerobic bacteria diffusion cottons 31 are used to realize the automated alternating operation of sewage cleaning and equipment maintenance, thereby greatly improving the efficiency of sludge denitrification.

[0095] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended that all changes within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0096] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sewage anaerobic ammonia oxidation denitrification reaction device, characterized in that: include A purification tank (1) for denitrification of sewage; A denitrification reactor (3), wherein the denitrification reactor (3) is arranged in the purification tank (1) and the cleaning tank (2), and the sewage is denitrified by the anaerobic ammonia-oxidizing bacteria in the denitrification reactor (3). The denitrification reactor (3) comprises an anaerobic bacteria culture medium (30) for storing and cultivating anaerobic bacteria, and anaerobic bacteria diffusion cotton (31) for facilitating the diffusion and implantation of the cultivated anaerobic bacteria. The anaerobic bacteria culture medium (30) is arranged in the middle of the anaerobic bacteria diffusion cotton (31), and a culture tank for installing the anaerobic bacteria culture medium (30) is provided in the middle of the anaerobic bacteria diffusion cotton (31); A cleaning tank (2) is used to maintain the denitrification reactor (3); the cleaning tank (2) is symmetrically arranged at both ends of the purification tank (1); A cleaner (4) for cleaning the anaerobic bacteria diffusion cotton (31), the cleaner (4) comprising a filter screen (40) for filtering impurities in sewage, the filter screen (40) being arranged at the bottom of the anaerobic bacteria diffusion cotton (31); The denitrification reactor (3) further comprises a sewage feed pipe (32), a sewage discharge pipe (33), a movable electric push rod (34), a fixed frame (35) and an isolation plate (36); the sewage feed pipe (32) is arranged on one side of the purification tank (1), and the sewage discharge pipe (33) is arranged on the other side of the purification tank (1); the sewage feed pipe (32) and the sewage discharge pipe (33) are offset from each other and the sewage discharge pipe (33) is higher than the sewage feed pipe (32); the fixed frame (35) is respectively arranged on the outside of two anaerobic bacteria diffusion cottons (31) to wrap the anaerobic bacteria diffusion cottons (31); the isolation plate (36) is arranged on both sides of the fixed frame (35), and the isolation plate (36) is arranged in the area where the purification tank (1) and the cleaning tank (2) overlap each other to isolate the purification tank (1) from the cleaning tank (2); The movable electric push rod (34) is arranged on the outer wall of the cleaning pool (2) on one side, and the output end of the movable electric push rod (34) is connected to the fixing frame (35) and has a tendency to move towards the purification pool (1).

2. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 1, characterized in that: The denitrification reactor (3) further comprises a deoxygenation treatment component (37), wherein the deoxygenation treatment component (37) is arranged on the purification tank (1).

3. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 1, characterized in that: The upper end of the anaerobic bacteria diffusion cotton (31) is also provided with a Y-shaped implantation reaction frame (5) which is rotated at equal intervals. The surface of the implantation reaction frame (5) is provided with an uneven raised area which increases the contact area with the sewage.

4. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 1, characterized in that: The cleaner (4) further comprises a cleaning scraper (41) for cleaning the sludge filtered by the filter screen plate (40) and a reciprocating component (42) for controlling the cleaning scraper (41) to perform reciprocating scraping along the length direction of the filter screen plate (40); The reciprocating component (42) comprises two reciprocating threaded rods (420) symmetrically distributed along the length direction of the cleaning pool (2); the reciprocating threaded rods (420) are rotatably arranged on the inner wall of the cleaning pool (2) via bearings; a synchronous wheel (421) is arranged at one end of the two reciprocating threaded rods (420) away from the purification pool (1); a synchronous belt (422) for driving the synchronous wheels (421) to rotate is commonly sleeved on the two synchronous wheels (421); a cleaning motor (423) is arranged on one side of the synchronous wheels (421); a movable slider (424) is installed on the two reciprocating threaded rods (420) by means of a threaded connection; and a cleaning scraper (41) is arranged on the movable slider (424).

5. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 4, characterized in that: The movable slider (424) is symmetrically provided with T-shaped columns (43) along the length direction, and the movable slider (424) is provided with an adjustment circular groove (44) for the T-shaped column (43) to slide up and down, a traction spring (45) is provided between the bottom of the T-shaped column (43) and the movable slider (424), and the upper end of the T-shaped column (43) is connected to the cleaning scraper (41).

6. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 4, characterized in that: Guide columns (46) are also provided on both sides of the cleaning scraper (41) in the length direction. The guide columns (46) are slidably arranged on a guide plate (47). The guide plate (47) is arranged on the inner wall of the cleaning pool (2), and a guide groove (48) for the guide column (46) to slide is provided on the guide plate (47).

7. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 2, characterized in that: The cleaning pool (2) is also provided with a replenisher (7) for replenishing anaerobic bacteria. The replenisher (7) comprises a replenishing plug (70) and a replenishing pipe (71). The replenishing plug (70) is arranged on the isolation plate (36), and the replenishing pipe (71) is arranged on the cleaning pool (2). The replenishing pipe (71) and the replenishing plug (70) are on the same straight line.

8. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 3, characterized in that: A spiral frame (80) is also installed at the bottom of the implantation reaction frame (5), and the implantation reaction frame (5) is rotatably mounted on the spiral frame (80), and the spiral frame (80) is arranged on the inner wall of the purification tank (1). A rotating gear (81) is installed in the middle of the implantation reaction frame (5), and a rotating rack (82) is meshed on one side of the rotating gear (81), and the rotating rack (82) is slidably arranged in the purification tank (1), and a reciprocating push rod (83) is provided on one side of the rotating rack (82), and the reciprocating push rod (83) is arranged on the outer wall of the purification tank (1). An impact column (84) is installed at the bottom of the implantation reaction frame (5) by means of a threaded connection, and the impact column (84) slides downward and penetrates the spiral frame (80).

9. The sewage anaerobic ammonium oxidation denitrification reaction device according to claim 1, characterized in that: The cleaning pool (2) is connected to a flushing pipe (9) for flushing and cleaning the anaerobic bacteria diffusion cotton (31) downwards.

10. A sewage anaerobic ammonium oxidation denitrification reaction process, using a sewage anaerobic ammonium oxidation denitrification reaction device according to any one of claims 1 to 9, characterized in that: The anaerobic ammonium oxidation denitrification reaction process of sewage is as follows: S1, anaerobic treatment: filling the purification pool (1) and the cleaning pool (2) with nitrogen, so that the nitrogen fills the purification pool (1) and the cleaning pool (2), so that the anaerobic treatment is performed to provide favorable conditions for the survival and cultivation of anaerobic bacteria; S2, sewage filling: connect the sewage to the sewage feed pipe (32), and then gradually fill the sewage into the purification tank (1); S3. Sewage denitrification: When the sewage enters the purification tank (1), the sewage comes into contact with the anaerobic bacteria in the anaerobic diffusion cotton (31), and the anaerobic bacteria react with the nitrogen compounds in the sewage to convert the nitrogen compounds in the sewage into nitrogen gas, which is then discharged; S4, sewage stirring: During the reaction between sewage and anaerobic bacteria, the sewage is stirred so that the sewage can be mixed with the anaerobic bacteria more fully, and at the same time, the anaerobic bacteria in the anaerobic bacteria diffusion cotton (31) are thrown into the sewage, greatly improving the efficiency of mixing with the sewage; S5, filtration treatment: when the sewage reacts with the anaerobic bacteria in the anaerobic bacteria diffusion cotton (31), the sewage is always in a flowing state, and at this time, impurities in the sewage are cleaned by the cleaner (4) to prevent the impurities in the sewage from entering the anaerobic bacteria diffusion cotton (31) and causing it to be blocked, thereby failing to achieve denitrification treatment of the sewage; S6, sludge cleaning: After the sewage is filtered by the filter screen (40) in the cleaner (4), the sludge accumulates on the filter screen (40), so the anaerobic bacteria diffusion cotton (31) to be cleaned is moved to the cleaning tank (2) to scrape off the sludge, and at the same time, the new anaerobic bacteria diffusion cotton (31) is moved to the purification tank (1) to filter the sewage. After the old anaerobic bacteria diffusion cotton (31) has completed the sludge scraping, it can wait for the anaerobic bacteria diffusion cotton (31) in the purification tank (1) to be maintained, and then re-enter the purification tank (1) to filter the sewage. Finally, the two anaerobic bacteria diffusion cottons (31) are used to realize the automatic alternating operation of sewage cleaning and equipment maintenance, thereby greatly improving the efficiency of sludge denitrification.

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